Publicaciones

Publicaciones 2013
- • Briones X. G., Urzúa M. D., Ríos H. E., Espinoza-Beltrán F. J., Dabirian R., Yazdani-Pedram M. Thin films of amphiphilic polyelectrolytes. Soft materials characterized by Kelvin probe force microscopy. Polymer (2013, 54 (21):5733-5740.
- • Durruthy-Rodríguez M. D., Gervacio-Arciniega J. J., Portelles J., Fuentes J., Pérez A., Yáñez-Limón J. M., Espinoza-Beltrán F. J. , Raymond O., Siqueiros J. M. PFM characterization of (K0. 5Na0. 5) 0.95 La0. 05 (Nb0. 9Ti0. 05) O2. 9 ceramics lead free . Applied Physics (2013, A. DOI 10.1007/s00339-013-7562-1. 113:515–519): 1-5
- • García González L., Torres J. H., Romo M. G. G., Peredo L. Z., Arias A. M. C., Sarabia E. L., E. Beltrán F.J. Ti/TiSiNO Multilayers Fabricated by Co-sputtering, Journal of Materials Engineering and Performance . (2013, 1): 1-5
- • Mayén-Mondragón R., Yánez-Limón J. M. , M. Moya-Canul K., Herrera-Gomez A. , Vázquez-Lepe M., Espinoza-Beltrán F. , López Beltrán A. M. Characterization of lead zirconate titanate (53/47) films fabricated by a simplified sol–gel acetic-acid route, Journal of Materials Science: Materials in Electronics , (June 2013, Volume 24, Issue 6, DOI: 10.1007/s10854-012-1045-6. (ISSN: 09574522) (D8): pp 1981-1988
- • Prokhorov E., Gervacio-Arciniega J. J., Luna-Bárcenas G. , Kovalenko Y., Espinoza-Beltrán F. J. Dielectric properties of Ge2Sb2Te5 phase-change films, Journal of Applied Physics (2013, 113 (11) 113705-113705-8)
- • Rivera-Nieblas J.O., Alvarado-Rivera J, Acosta-Enriquez M. C., Ochoa-Landin R., Espinoza-Beltran F. J., Apolinar-Iribe A., Flores-Acosta M., De Leon A., Castillo S. J . Resistance and Resistivities of PBs Thin Films Using Polyethylenimine by Chemical Bath Deposition. Chalcogenide Letters (2013, 10 (9): 349-358
- • Sanchez Quintero O. M., Aperador Chaparro W., Ipaz L., Sanchez Barco J. E., Espinoza Beltrán F ., Zambrano G . Influence of the microstructure on the electrochemical properties of Al-Cr-N coatings deposited by co-sputtering method from a Cr-Al binary target. Materials Research-Ibero-American Journal of Materials 2013 , 16(1): 204-214.
  
  Artículos publicados en extenso en otras revistas especializadas, con arbitraje
- • Quintero O.M.S., Chaparro W. A., Ipaz L., Barco J.E.S., E. Beltrán F. Zambrano G. Influence of the microstructure on the electrochemical properties of Al-Cr-N coatings deposited by co-sputtering method from a Cr-Al binary target, Materials Research (2013, 16 (1): 204-214
  
  Resúmenes de participación en congresos, nacionales e internacionales
- • Batista Leonardo, Rabe Ute, Hirsekorn Sigrun, Bousquet Marie, Lemee Nathalie, Durand-Drouhin Olivier, Zeinert Andreas, Herrera Jiménez Enrique, Garcia Castro Andrés, Gallegos Melgar Adriana, Espinoza Beltrán Francisco, Muñoz Saldaña Juan . Characterization and investigation of material properties and functionalities of bismuth-based nanostructures.
- • Cardona Dagoberto, Camps Enrique, Rodil Sandra Elizabeth, Francisco Espinoza , Flores Ruiz Francisco Javier, Zapata Martin . Synthesis of BixFeyO3 thin films obtained by PLD.
- • Cardona Dagoberto, Camps Enrique, Espinoza Francisco , Flores Francisco, Zapata Martin, Silva-Bermudez Phaedra, Rodil Sandra Elizabeth. Influence of composition on the electrical properties of BiFeO3 thin films.
- • De la Paz Cruz Ma., Gervacio José J., Vladespino Duilio, Durán Alejandro C., Siqueiros Jesús M., Espinoza Francisco J. , Muñoz Juan, López Rigoberto, Castañada Rosalba . Piezoresponse force microscopy studies of lead free piezoelectric, ferroelectric and multiferroic thin films.
- • De la Paz Cruz Ma., Vladespino Duilio, Gervacio José J., Durán Alejandro C., Herrera Manuel, García Andrés C., Muñoz Juan, Espinoza Francisco J. , Bueno Darío, Curiel Mario, Siqueiros Jesús M. Multiferroic YCrO3 films deposited by magnetron sputtering: growth and characterization
- • Diliegros Godines Carolina Janani, Flores Ruiz Francisco Javier , Castanedo Pérez Rebeca, Torres Delgado Gerardo, Espinoza Beltrán Francisco Javier . Mechanical properties of tin-doped cadmium oxide thin films obtained by sol gel.
- • Espinoza Beltrán Francisco Javier , Flores Ruiz Francisco Javier, León Sarabia Eleazar, Enriquez Flores Chirstian Iván, Muñoz Saldaña Juan , Cardona Dagoberto, Camps Enrique. Nanoscale ferroelectric properties of bismuth ferrate films (BFO) through pfm and chemical composition mapping.
- • Flores Ruiz Francisco Javier, Eleazar León Sarabia, Enríquez Flores Christian Iván, Moreno Palmerin Joel, Espinoza Beltrán Francisco Javier . Mechanical properties of Al-Cu-Mg-Ag alloys by resonance-tracking AFAM and nanoindentation.
- • Flores Ruiz Francisco Javier, Leon Sarabia Eleazar, Enriquez Flores Christian Iván, Cardona Ramírez Dagoberto, Camps Carvajal Enrique, Muñoz Saldaña Juan , Espinoza Beltrán Francisco Javier . Fatigue in an isolated ferroelectric domain.
- • Flores Ruiz Francisco Javier, Enriquez Flores Christian Iván, Camps Carvajal Enrique, Herrera Gómez Alberto, Espinoza Betrán Francisco Javier . Evaluation of elastic properties of DLC films using resonance-tracking AFAM.
- • León Sarabia Eleazar, Flores Ruiz Francisco Javier, Enríquez Flores Christian, Moreno Palmerin Joel, Espinoza Beltrán Francisco Javier . Biotribological measurements on red blood cell using friction force microscopy
- • Tiberto Paola, Barrera Gabriele, Celegato Federica, Coisson Marco, Vinai Franco, Garcia Castro A.C., Salamanca-Riba L., Vispute R.D., Espinoza Beltran F.J., Munoz Saldaña J. Temperature dependence of magnetotransport in multiferroic BiFeO3 thin films by pulsed laser deposition.
- • Gallegos-Melgar A.D., Herrera-Jimenez E.J., Rivera-Gil M.A., Lemeé N., Espinoza-Beltran F.J., Muñoz-Saldaña J. Mn-doping effects on electrical properties of 0.94 (Bi0.5Na0.5) TiO3-0.06BaTiO3 ceramics
- • Herrera-Jimenez E.J., Martínez F., Espinoza-Beltran F.J., Muñoz-Saldaña J. Influence of processing parameters on the structure and microstructure of multiferroic BiFeO3 ceramics.
- • Rivera-Gil M.A., Eiras Jose A., Do Nascimento William, Herrera-Jimenez E.J., Martínez F., Gallegos-Melgar A.D., Espinoza-Beltran F.J., Muñoz-Saldaña J. Processing of (Bi 0.5 K 0.5 )TiO 3 -(Bi 0.5 Na 0.5 )TiO 3 -BaTiO 3 Ceramics by Spark Plasma Sintering
- • Ruiz-Luna H., Lozano-Mandujano D., Cáceres-Díaz L.A., Alvarado-Orozco J.M., Poblano-Salas C.A., Trapaga-Martinez L.G., Espinoza-Beltran F.J., Muñoz-Saldaña J. Effect of selected thermal spray conditions in HVOF processing on the quality of NiCoCrAlY coatings.
  
  2 nd . International Symposium on Nanoscience and Nanomaterials . Ensenda, Baja California, México 4-8 de marzo de 2013.
- • Espinoza-Beltrán F.J . , Enriquez-Flores Christian Ivan, Flores-Rodríguez Francisco Javier, León-Zarabia Eleazar. Quantitative mechanical and piezoelectric properties of materials at nanoscale by SPM.
- • Gervacio-Arciniega J.J., Enriquez-Flores C.I., Espinoza-Beltrán F. J. , Durán A., Siqueiros J. M., Cruz M. P. P iezorespose force microscopy characterization of multiferroic YCRO3 thin films .
- • Gervacio-Arciniega J.J., Curiel M., Enriquez-Flores C.I., Raymond O., Ostos C., Font R., Espinoza-Beltrán F. J., and Siqueiros J.M. Study of ferroelectric properties of highly textured Pb(Fe1/2Nb1/2)O3 thin films by piezoresponse force microscopy .
- • Portelles Fuentes J.J., Durruthy-Rodríguez M.D., Pérez A., Yáñez-Limón J.M., Espinoza-Beltrán F.J. , Raymond O., Heiras J., Cruz M.P., Siqueiros J. M. Influence of the obtaining process in the structural and dielectric properties of the doped KNN system .
- • Rivera-Gil M. A., Herrera-Jimenéz E.J., Gallegos-Melgar A.C., Cruz-Jáuregui M. P., Eiras J.A., Espinoza Beltran F. J., Muñoz-Saldaña J. Synthesis and study of the structure, microstructure and ferroelectric properties of (BI0.5K0.5) TIO3.
  
  SLACA. Simpósio Latinoamericano de Ciências en Alimentos. Campinas Brasil. 3-6 noviembre (2013 )
- • Cruz M.P., Valdespino D., Gervacio J. J., Herrera M., Bueno-Baques D., Durán A., Muñoz-Saldaña J. , García Castro A.C., Espinoza-Beltrán F. J. , Curiel M., Siqueiros J.M. Piezo and ferroelectric properties of YCrO3 ceramics and films.
  12 th . Inter-American Microscopy Congress. Cartagena, Colombia 24-28 Septiembre (2013)
- • Espinoza Beltrán Francisco Javier . Quantitative Mechanical Properties of Nanocomposite Materials at Nanoscale By Resonance Tracking AFAM . (Plática invitada)
  
  Tesis Doctorado
- • Christian Ivan Enriquez Flores .
  
  Titulo de la tesis: “ I nfluencia de la microestructura en la dureza de recubrimientos de
  
  Tesis
- Especialidad: Doctor en Ciencias especialidad en Materiales Cinvestav Unidad Querétaro. Director de Tesis: Dr. Francisco Javier Espinoza Beltrán. Fecha de obtención de grado: Abril 26 2013

Publicaciones 2017
- • PROFESORES VISITANTES
  
  1.- Nombre del investigador: CELIA LIZETH GÓMEZ MUÑOZ
  Institución de procedencia: UNIVERSIDAD NACIONAL AUTÓNOMA DE MEXICO
  Motivo de la visita:
  Periodo de la estancia: 2017-08-01 a 2018-07-31
  Fuente de financiamiento: CONACYT
  Investigador anfitrión: Alberto Herrera Gómez
  
  2.- Nombre del investigador: ANTONIO TIBURCIO
  Institución de procedencia: UNIVERSIDAD NACIONAL JORGE BASADRE GROHMANN
  Motivo de la visita: Recubrimientos duros tipo TiAl TiAlN CrAl CrAlN caracterización de materiales mediante EBSD
  Periodo de la estancia: 2017-04-01 a 2018-03-31
  Investigador anfitrión: José Martín Yáñez Limón
  
  3.- Nombre del investigador: GUSTAVO ZAMBRANO ROMERO
  Institución de procedencia: Universidad del Valle Cali Colombia
  Motivo de la visita: Recubrimientos duros mediante erosión catódica materiales óxidos y sus interfaces
  Periodo de la estancia: 2017-04-02 a 2017-04-09
  Investigador anfitrión: José Martín Yáñez Limón
  
  4.- Nombre del investigador: OSMANY GARCÍA ZALDIVAR
  Institución de procedencia: UNIVERSIDAD DE LA HABANA
  Motivo de la visita: Materiales multiferroicos tipo PZT y libres de pb materiales híbridos PMMA precursor ferroeléctrico magnético materiales magnéticos y magnetocaloricos
  Periodo de la estancia: 2017-08-10 a 2017-11-10
  Investigador anfitrión: José Martín Yáñez Limón
  
  5.- Nombre del investigador: FRANCISCO CALDERÓN PIÑAR
  Institución de procedencia: UNIVERSIDAD DE LA HABANA
  Motivo de la visita: Materiales multiferroicos tipo PZT y libres Pb materiales magnéticos y magnetocaloricos
  Periodo de la estancia: 2017-12-06 a 2017-12-20
  Investigador anfitrión: José Martín Yáñez Limón
  
  ESTANCIAS POSTDOCTORALES
  
  1.- Nombre del posdoctorante: ORLANDO CORTAZAR MARTÍNEZ
  Institución de procedencia: Instituto Nacional de Astrofísica Óptica y Electrónica
  Tema de investigación: NITRURACIÓN DE ALÚMINA POR PLASMA REMOTO
  Periodo de la estancia: 2016-08-01 a 2017-07-31
  Fuente de financiamiento: CONACYT
  Investigador anfitrión: Alberto Herrera Gómez
  
  2.- Nombre del posdoctorante: BEATRIZ LILIANA ESPAÑA SÁNCHEZ
  Institución de procedencia: Centro de Investigación en Química Aplicada
  Tema de investigación: PREPARACIÓN DE NANOCOMPOSITOS CON ACTIVIDAD BIOLÓGICA
  Periodo de la estancia: 2016-08-01 a 2017-08-01
  Fuente de financiamiento: CONACYT
  Investigador anfitrión: J. Gabriel Luna Bárcenas
  
  3.- Nombre del posdoctorante: CELIA LIZETH GÓMEZ MUÑOZ
  Institución de procedencia: UNIVERSIDAD NACIONAL AUTÓNOMA DE MEXICO
  Tema de investigación: EFECTO DE LA NITRURACIÓN DEL DIELÉCTRICO COMO BARRERA DE DIFUSIÓN EN ESTRUCTURAS MOS TIPO INGAAS/ZRO
  Periodo de la estancia: 2016-08-01 a 2017-08-01
  Fuente de financiamiento: CONACYT
  Investigador anfitrión: Alberto Herrera Gómez
  
  4.- Nombre del investigador: IRELA SANTOS SAUCEDA
  Institución de procedencia: UNIVERSIDAD DE SONORA
  Motivo de la visita:
  Periodo de la estancia: 2017-08-01 a 2017-07-31
  Fuente de financiamiento: CONACYT
  Investigador anfitrión: Rafael Ramírez Bon
  
  5.- Nombre del posdoctorante: ALAIN PÉREZ RODRÍGUEZ
  Institución de procedencia: UNIVERSIDAD DE SONORA
  Tema de investigación: ESTUDIO DE PROPIEDADES ÓPTICAS, LUMINISCENTES Y ESTRUCTURALES DE NANOPARTÍCULAS DE COMPUESTOS DE TIE
  Periodo de la estancia: 2017-08-01 a 2018-07-31
  Fuente de financiamiento: CONACYT
  Investigador anfitrión: Rafael Ramírez Bon
  
  PRODUCTOS DE INVESTIGACIÓN Y DESARROLLO
  5.1. PUBLICACIONES DE LOS INVESTIGADORES.
  5.1.1. Artículos originales de investigación.
  5.1.1.a. Publicados en extenso en revistas de prestigio internacional con arbitraje estricto.
  
  5.1.1.a.1. Alejandro J. Giménez, J. Gabriel Luna Bárcenas, J.M. Yánez Limón, Rodrigo Esparza, Sergio Joaquín Jiménez Sandoval and F. J. Medellin Rodriguez. Electronic papel from facile, two-step deposition of CuS. Cellulose 2017(24): 1069-1075
  
  5.1.1.a.2. D.M. Osorio , J. C. Caicedo , W. Aperador , A. M. Benítez Castro, Juan Muñoz Saldaña, José Martín Yáñez Limón, O. Sánchez and Gustavo Zambrano. Characterization of mechanical properties and electrochemical behaviour in a Hank s solution of 316L Cr1 xAlxN system. IOP Conf. Series: Journal of Physics: Conf. Series 2017(786): 1-7
  
  5.1.1.a.3. Dagoberto Cabrera Germán, Gabriela Molar Velazquez, Gustavo Gómez Sosa, Wenceslao De la Cruz Sosa y Alberto Herrera Gómez. Detailed peak fitting analysis of the Zn 2p photoemission spectrum for metallic films and its initial oxidation stages. Surf Interface Anal 2017 49(11): 1078-1087
  
  5.1.1.a.4. David Lozano Mandujano, Carlos Poblano Salas, Haide Ruiz Luna, B Esparza Esparza and Juan Manuel Alvarado Orozco. Thermal Spray Deposition, Phase Stability and Mechanical Properties of La2Zr2O7 LaAlO3 Coatings. Journal of Thermal Spray Technology 2017 26(6): 1-11. 1198-1206
  
  5.1.1.a.12. F.J. Flores Ruíz, J.J. Gervacio Arciniega, E. Murillo Bracamontes, M.P. Cruz and J.M. Yanez Limon. An alternative scheme to measure single-point hysteresis loops using piezoresponse force microscopy. Measurement 2017(108): 143–151
  
  5.1.1.a.14. Fermín Ramírez Crescencio, Rocío Rendón, Alberto Herrera Gómez, Gustavo Gómez Sosa, Mariela Bravo Sánchez y Ana Leticia Fernández Osorio. Facile obtaining of Iridium(0), Platinum(0) and Platinum(0)-Iridium(0) alloy nanoparticles and the catalytic reduction of 4-nitrophenol. Materials Chemistry and Physics, 2017(201): 289-296
  
  5.1.1.a.20. Gilgamesh Luis Raya, Marius Rios Cardona, J. Gabriel Luna Bárcenas, Martín Adelaido Hernández Landaverde, Adair Jiménez Nieto, José Luis García Rivas, Beatriz Liliana España Sánchez and Isaac C. Sánche. From Intermolecular Interactions to Texture in Polycrystalline Surfaces of 1, alkanediols ( 10 13). Molecules 2017 22(956): 1-16
  
  5.1.1.a.21. H.R. Guzmán Carrillo, E.M. Rivera Muñoz, N. Cayetano Castro, R. Herrera Basurto, Z. Barquera Bibiano, F. Mercader Trejo and A. Manzano Ramírez. Facile control of ZnO nanostructures by varying molar concentration of zinc acetate. Materials Research Bulletin 2017(90): 138-144. 0025-5408
  
  5.1.1.a.22. Haidé Ruiz Luna, J. Porcayo Calderón, Juan Manuel Alvarado Orozco, A.G. Mora García, L. Martínez Gómez and Luis Gerardo Trápaga Martínez. Influence of oxidation treatments and surface finish on the electromechanical behavior of HVOF Ni-20Cr coatings. Journal of Materials Engineering and Performance 2017: 1-12. 1059-9495
  
  5.1.1.a.24. J.E. Samaniego Benítez, I.R. Chávez Urbiola, J. Ramírez Aparicio, Juan Francisco Pérez Robles and Rafael Ramírez Bon. Thermal transformation of plumbonacrite Si films into microstructured Pb Si ones. Materials Letters 2017(198): 38-41
  
  5.1.1.a.26. J.M. Juárez García, J.M. Yánez Limón, A. Manzano Ramírez, H. Rojas Chávez, A. Rodríguez López, F. Mercader Trejo and R. Herrera Basurto. Characterization and Quantification of the Phases Concentration of Cu60 Zn40 Alloy as Candidate Reference Material. Metallogr. Microstruct. Anal 2017(6): 164-170
  
  5.1.1.a.31. Joel Molina Reyes, Héctor Uribe Vargas, Reydezel Torres Torres, Pierre Giovani Mani González y Alberto Herrera Gómez. Accurate modeling of gate tunneling currents in Metal Insulator Semiconductor capacitors based on ultra thin atomic-layer deposited Al2O3 and post-metallization annealing. Thin Solid Films 2017 638: 48-56
  
  5.1.1.a.33. Juan Muñoz Saldaña, Uwe Schulz , G.C. Mondragón Rodríguez and Luis Alberto Caceres Díaz. Microstructure and lifetime of Hf or Zr doped sputtered NiAlCr bond coat 7YSZ EB PVD TBC systems. Surface 2017 335: 41-51. 2319-183
  
  5.1.1.a.36. M. Rico, R. Rodríguez, V.H. Zapata, M. H. Medina Barreto, B. Cruz Muñoz, J. A. Tabares, A. M. Benítez Castro and Juan Muñoz Saldaña. Solid state synthesis of Bi0 4Sr0 6FeO3 powder for SOFC applications. Hyperfine Interact 2017 238(57): 1-10
  
  5.1.1.a.37. Mariela Bravo Sánchez, J. A. Huerta Ruelas, Dagoberto Cabrera Germán y Alberto Herrera Gómez. Composition. Assessment of ferric oxide by accurate peak fitting of the Fe 2p photoemission spectrum. Surface and Interface Analysis 2017 49: 253-260
  
  5.1.1.a.38 Martín Adelaido Hernández Landaverde, Marius Rios Cardona, Arturo Mendoza Galván, Carlos Andrés Ortiz Cardona and Sergio Joaquín Jiménez Sandoval. Properties of sputtered ZnS and ZnS:A (A= Er, Yb) films grown at low substrate temperatures. Journal of Vacuum Science and Technology A 2017 35(3): 1-8
  
  5.1.1.a.40. O. García Zaldivar, T. Escamilla Díaz, M. Ramírez Cardona, Martín Adelaido Hernández Landaverde, Rafael Ramírez Bon, J.M. Yánez Limón and F. Calderón Piñar. Ferroelectric Paraelectric Transition In A Membrane With Quenched Induced Phase Of PVDF. Scientific Reports 2017 7(5566): 1-7
  
  5.1.1.a.43. Rodrigo Mayen Mondragón, Carlos Alberto Ávila Herrera, Alberto Herrera Gómez, José Martín Yáñez Limón y Rafael Ramírez Bon. Laser Reflection as a Simple Prospect Tool for Nondestructive Quality Control of Charged Lapping. Journal of Tribology 2017 139(2101): 1-6
  
  5.1.1.a.48. Y. Fernández Alfonso, A. Maury Toledo, O. García Zaldívar, Martín Adelaido Hernández Landaverde, Rafael Ramírez Bon, J.M. Yáñez Limón, S. Díaz Castañón, Y. González Alfaro y F. Calderón Piñar. Propiedades magnéticas y distribución de tamaños de nanopartículas de magnetita recubiertas con ácido oleico. Rev. Cub. Fis 2017(34): 3-8
  
  Publicados en extenso en memorias de congresos internacionales, con arbitraje.
  
  2nd. International Conference on Nanotechnology and Nanomaterials in Energy 2017-07-07 - 2017-07-09 Lyon, France:
  
  XIV Congreso CIASEM 2017 2017-09-25 - 2017-09-29 Varadero, Cuba:
  
  Sustainable Industrial Processing Summit 2017-10-22 - 2017-10-26 Cancún, Q. Roo:
  
  5.1.1.c.4. Vorobiev Yu V, I.R. Chávez Urbiola, Rafael Ramírez Bon, F.J. Willars Rodríguez, P. Horley and Vorobiev P. Nano structured Chalcogenide Materials for Economic and Efficient Solar Energy Converters. p. ..
  
  5.1.1.c.5. Yuri Vorobiev, I.R. Chávez Urbiola, F.J. Willars Rodríguez, Rafael Ramírez Bon, P. Horley and Pavel Vorobiev. Nano structured Chalcogenide Materials for Economic and Efficient Solar Energy Converters. p.
  
  17th International Conference on Non Conventional Materials and Technologies 2017-11-26 - 2017-11-29 Mérida, Yucatán:
  
  5.1.1.c.6. A. Manzano Ramírez, J. Ramón Gasca, H.R. Guzmán Carrillo, J.L. Reyes Araiza and Mauricio Mondragón Figueroa. A short view on the novel uses of geopolymer metakaolin based to control air and water pollution. p. 442.
  
  5.1.1.g. Resúmenes de participación en congresos nacionales e internacionales.
  
  1st International Conference on Aeronautics 2017-10-17 - 2017-10-18 Querétaro, Qro., México:
  
  5.1.1.g.1. A. I. Gutiérrez Pérez, Bárbara Moreno Murguía, D.A. Fernandez Venavides and Juan Muñoz Saldaña. Fabrication of (Bi0.5Na0.5)TiO3 based ceramic powders for thermal-sprayed piezoelectric coatings as potential energy harvesters in aeronautics.(1)
  
  5.1.1.g.2. A. Valencia Ramírez and Juan Muñoz Saldaña. Structural characteristics of B2-NiAl and NiAlCr doped with intermetallic powder synthesized by SHS in mechanical milling. p. 1.
  
  5.1.1.g.3. A.G. Mora García, Haide Ruiz Luna, Juan Muñoz Saldaña and Uwe Glatzel. Effect of superalloy substrates on NiCoCrAlYTa bond coats deposited by HVOF for thermal barrier coating applications. p. 1.
  
  5.1.1.g.4. C. Y. Guijosa García and Juan Muñoz Saldaña. Analysis and properties of volcanic ashes and generated CMAS. An Approach on TBC performance implications. p. 1.
  
  5.1.1.g.5. L. I. Pérez Andrade, Juan Muñoz Saldaña and Juan Manuel Alvarado Orozco. Microstructural and mechanical characterization of cold sprayed Inconel 718 coatings. p. 1.
  
  2do Symposium de Materiales Avanzados 2017-04-03 - 2017-04-03 Monterrey, N.L:
  
  5.1.1.g.7. Alberto Herrera Gómez. La física resuelta y sin resolver detrás de la espectroscopía fotoelectrónica de rayos-X. p. 1.
  
  7th Meeting of Synchrotron Light Users 2017-10-03 - 2017-10-06 León Gto:
  
  5.1.1.g.8. Alberto Herrera Gómez. The physical origin of the Shirley background in photoemission spectra. p. 1.
  
  Department of Mechanical Engineering Sciences 2017-09-19 - 2017-09-18 Surrey, Inglaterra:
  
  5.1.1.g.9. Alberto Herrera Gómez. The Physical Origin of the Shirley Signal in Photoemission Spectra. p. 1.
  
  ITSC 2017 International Thermal Spray Conference and Exposition 2017-06-07 - 2017-06-09 Düsseldorf, Alemania:
  
  5.1.1.g.10. A.G. Mora García, Haide Ruiz Luna, Carlos Poblano Salas, Uwe Glatzel, Luis Gerardo Trápaga Martínez and Juan Muñoz Saldaña. Glatzel U. Effect of HVOF thermal spray prameters on the deposition of NiCoCrAlYTa bond coats.
  
  XXVI International Materials Research Congress 2017-08-20 - 2018-08-25 Cancún, Quintana Roo:
  
  5.1.1.g.17. A.G. Mora García, Haide Ruiz Luna and Juan Muñoz Saldaña. Effect of superalloy substrates on nicocralyta bond coats deposited by HVOF for thermal barrier coating applications.(1):
  
  5.1.1.g.18. A.G. Mora García, Haide Ruiz Luna, Juan Muñoz Saldaña, Uwe Glatzel and Uwe Schulz. Effect of superalloy substrates on NiCoCrAlYTa bond coats deposited by HVOF for thermal barrier coating applications. International. p. 1.
  
  5.1.1.g.19. Alberto Herrera Gómez. Detailed characterization of ALD-nanofilms through ARXPS. p. 1.
  
  5.1.1.g.21. Cynthia Yanel Guijosa García, Luis Gerardo Trápaga Martínez and Juan Muñoz Saldaña. Synthesis and processing of gadolinium zirconate (Gd2Zr2O7) for thermal barrier coatings applications. p. 1.
  
  5.1.1.g.23. E. Cruz Valeriano, J. Moreno Palmerín, HJ Dorantes Rosales, J.J. Gervacio Arciniega, A.M. Gutiérrez Peralta, Yañez Limón J M, F.J. Espinoza Beltrán and CI Enríquez Flores. Study of Mechanical Properties in Al5%Ag4%-03%MG coatings using dynamics techniques of atomic force microscopy. p. ..
  
  5.1.1.g.27. G.V. De León Nope, Diego Germán Espinosa Arbelaez, Juan Muñoz Saldaña, J. Corona , Luis Gerardo Trápaga Martínez and Juan Manuel Alvarado Orozco. Oxidation kinetics and tribooxidation behavior of inconel 718 superalloy manufactured by direct metal laser sintering. p. 1.
  
  5.1.1.g.30. J. A. Rincón, Jennifer Andrea Hermann Muñoz, Rafael Ramírez Bon, Juan Manuel Alvarado Orozco and Juan Muñoz Saldaña. Influence of temperature on the sintering and in vitro behavior of hydroxyapatite bioglass composites an experimental study using DoE. p. 1.
  
  5.1.1.g.32. Jennifer Andrea Hermann Muñoz, Rafael Ramírez Bon, Juan Manuel Alvarado Orozco and July Andrea Rincón López. Influence of temperature on the sintering and in-vitro behavior of hydroxyapatite bioglass composites: an experimental study using DoE. p. 1.
  
  5.1.1.g.35. Lorena Ivonne Pérez Andrade and Juan Muñoz Saldaña. Microstructural and mechanical characterization of cold sprayed innocent 718 coatings. p. 1.
  
  5.1.1.g.36. M. Frausto Avila, Yañez Limón J M and A. Luna Bugallo. Thermal Characterization of MoS2 and WS2 mono few layers using scanning thermal microscopy SThM. p. ..
  
  5.1.1.g.40. P. Iglesias, A. Arias, Yáñez Limón J M, Ramírez Bon R., A. Hurtado Macías, O. Ornache , M.E. Gómez and Gustavo Zambrano. Effect of the Zinc Concentration on the morphology and magnetic behavior of Ni1-xZnxFe2O4 ferrofluid nanoparticles. p. 39.
  
  5.1.1.g.40. Yáñez Limón J M, Rivero Santillán E. and Ramírez Bon R. Graduate Programs At Cinvestav-Queretaro In National Context In Education In Materials Science. p. 347.
  
  X International Conference on Surfaces, Materials and Vacuum 2017-09-25 - 2017-09-29 Ciudad Juárez, Chihuahua:
  
  5.1.1.g.41. C. Montero Tavera, J.M. Yánez Limón, M.D. Durruthy Rodríguez and Rivelino Flores Farias. KNN ferroelectrics lead free obtained by high energy milling. p. 49.
  
  5.1.1.g.42. E. Yescas Fernández, JA Vargas García, V. Saucedo Rivalcoba, O. Gómez Guzmán and Yañez Limón J M. Preparation and characterization of ceramic membranes based in mullite to clarification of sugar cane juice. p. 45.
  
  5.1.1.g.43. J. A. Torres Ochoa, Diego Fernando Mulato Gómez, Dagoberto Germán Cabrera, Mariela Bravo Sánchez and Alberto Herrera Gómez. Detailed analysis of the photoemission spectra of copper films with coexistent Cu1434343, Cu2434343 and Cu3434343 oxidation states. p. 1.
  
  5.1.1.g.44. J. A. Torres Ochoa, Orlando Cortazar Martínez, Yuri Lizbeth Chipatecua Godoy, Celia Lizeth Gómez Muñoz, Joaquin Raboño Borbolla, Andrés De Luna Bugallo and Alberto Herrera Gómez. Chemical depth profile of ultrathin nitrided ALD-hafnia films. p. 1-2.
  
  5.1.1.g.45. M. Hernández Ochoa, H. Arizpe Chávez, Ramírez Bon R., Yañez Limón J M, M. Flores Acosta, M. Cortez Valadez and A. Pérez. Current Voltage I V characterization of ZnO B ZnO Al In diode structures fabricated by the Sol Gel method. p. 286.
  
  5.1.1.g.46. M.D. Durruthy Rodríguez, M. Hernández García, C. Montero Tavera and Yañez Limón J M. Photovoltaic characteristics of ferroelectric films with perovskite structure. p. 37.
  
  5.1.1.g.48. Orlando Cortazar Martínez, J. A. Torres Ochoa, Joaquín Raboño Borbolla and Alberto Herrera Gómez. Oxidation mechanism of metallic chromium. p. 1.
  
  5.1.1.g.49. Rivelino Flores Farías, M.D. Durruthy Rodríguez, J. de J. Serralta Macías and José Martín Yáñez Limón. Ferroelectric Phase Transition Temperature Detected by Thermal Transport and Relative Permittivity in PZTN 53-47 x. p. 36.
  
  5.1.1.g.50. Yuri Lizbeth Chipatecua Godoy, Jhon Jairo Olaya Flores, Gregorz Greczynski y Alberto Herrera Gómez. Depósito de TiN, TiTaN y TiTaAlN mediante pulverización catódica. p. 1.
  
  AACC International Annual Meeting 2017-10-08 - 2017-10-11 San Diego Ca:
  
  TACT 2017 International Thin Films Conference 2017-10-15 - 2017-10-18 Hualien, Taiwan:
  
  5.1.1.g.53. Alberto Herrera Gómez. The Physical Origin of the Shirley Signal in Photoemission Spectra. p. 1.
  
  5.1.1.g.54. Alberto Herrera Gómez. Assessment of the composition of transition metal oxide nanofilms through X-ray photoelectron spectroscopy. p. 1.
  
  64th International Symposium 2017-10-29 - 2017-11-03 Tampa, Florida, USA:
  
  5.1.1.g.55. Alberto Herrera Gómez. Coupling Effects on the Intensity and Background of the Cr 3p Photoemission Spectrum around the Cr 2s Threshold. p. 1.
  
  5.1.1.g.56. Alberto Herrera Gómez, Yuri Lizbeth Chipatecua Godoy y Gregorz Greczynski. Dependence of the Corrosion Behavior of Transition Metal Nitride Films on the Sputtering Power Mode. p. 1.
  
  5.1.1.g.57. Dagoberto Cabrera Germán, Gabriela Molar Velazquez, Gustavo Gómez Sosa y Alberto Herrera Gómez. Quantitative Peak-Fitting Analysis of the Photoemission Spectra of Metallic Zinc and Zinc Oxide Films. p. 1.
  
  5.1.1.g.58. J. A. Torres Ochoa, C. L. Gómez Muñoz, Andrés De Luna Bugallo y Alberto Herrera Gómez. Removal of Charge Centers in Hafnia Films by Remote Plasma Nitruration. p. 1.
  
  5.1.1.g.59. J. A. Torres Ochoa, Dagoberto Cabrera Germán, Mariela Bravo Sánchez and Alberto Herrera Gómez. The Cu 2p Photoemission Spectra from Mixed Oxidation States. p. 1.
  
  Foro de Innovación y empredurismo, INNOVEM 2017-10-31 - 2017-10-31 León, Gto:
  
  31st EFFoST International Conference 2017-11-13 - 2017-11-16 España:
  
  ESTUDIANTES GRADUADOS
  6.1. MAESTRÍA.
  
  1. Víctor Manuel Arellano Arreola.
  Titulo: “Etapas tempranas de la oxidación de itrio” Especialidad: Materiales.
  Director(es) de tesis: Dr. Alberto Herrera Gómez, En co-dirección con el Dr. Andrés de Luna Bugallo. Fecha de obtención de grado: 4 de septiembre de 2017
  
  2. Mónica Charbel Cuevas Corona.
  Titulo: "Funcionalización biomolecular de nanoalambres magnétics."
  Especialidad: Materiales.
  Director(es) de tesis: J. Gabriel Luna Bárcenas y Diana Ginette Zárate Triviño.
  Fecha de obtención de grado: 29 de septiembre de 2017
  
  3. July Andrea Rincón López.
  Titulo: "Estudio de las propiedades mecánicas, térmicas y biológicas de hidroxiapatita /bovidrio mediante el diseño de experimentos."
  Especialidad: Materiales.
  Director(es) de tesis: Juan Muñoz Saldaña y Juan Manuel Alvarado Orozco.
  Fecha de obtención de grado: 30 de octubre de 2017
  
  4. José Martín Camas López.
  Titulo: “Desarrollo de un material compuesto elaborado con biofibras y nanomateriales, con alta resistencia mecánica, baja densidad y propiedades conductivas ."
  Especialidad: Materiales.
  Director(es) de tesis: Alejandro Manzano Ramírez.
  Fecha de obtención de grado: 4 de diciembre de 2017
  
  5. María de la Soledad de Urquijo Ventura.
  Titulo: "Síntesis y caracterización de capas dialécticas híbridas de PVP-SiO2 y PVP+TiO2 para aplicaciones en transistores."
  Especialidad Materiales.
  Director(es) de tesis: Rafael Ramírez Bon.
  Fecha de obtención de grado: 8 de diciembre de 2017
  
  6. María Teresa Ayala
  Titulo: "Síntesis y caracterización de óxidos de bismuto para aplicaciones fotocatalíticas."
  Especialidad: Materiales.
  Director(es) de tesis: Juan Muñoz Saldaña y Andrés de Luna Bugallo.
  Fecha de obtención de grado: 8 de diciembre de 2017
  
  6.2. DOCTORADO.
  
  1. Susana Meraz Dávila.
  Titulo: "Estudio de Películas y nanopartículas de CdS preparadas por baño químico utilizando biopolímeros para aplicaciones.
  Especialidad: Materiales
  Director(es) de tesis: Rafael Ramírez Bon.
  Fecha de obtención de grado: 23 de mayo de 2017
  
  6.3. ESTUDIANTES EXTERNOS.
  
  José Ángel Velázquez García.
  Titulo: "Sintesis y caracterización eléctrica de películas delgadas basadas en el sistema KNN-BTpor método sol gel."
  Especialidad: Ingeniería Química.
  Director(es) de tesis: Dr. José Martín Yáñez Limón y Dra. Ma. Guadalupe Rivera Ruedas.
  Fecha de obtención de grado: 6 de abril de 2017
  Institución: Universidad Juárez Autónoma de Tabasco.
  
  Imelda Gutiérrez Córdova.
  Titulo: "Síntesis y estudio de películas hibridas PMMA con precursor BNT."
  Especialidad: Ingeniería en Nanotecnología.
  Director(es) de tesis: Dr. José Martín Yáñez Limón.
  Fecha de obtención de grado: 9 de junio de 2017
  Institución: Universidad Tecnológica de Querétaro.
  
  Manuel Fabián Reséndiz Segovia.
  "Síntesis y Caracterización de Cerámicos Antiferroeléctricos."
  Especialidad: Ingeniería en nanotecnología en competencias profesionales.
  Director(es) de tesis: Dr. José Martín Yáñez Limón.
  Fecha de obtención de grado: 23 de junio de 2017
  Institución: Universidad Tecnológica de Querétaro.
  
  Jorge Alberto Olán Cano.
  Titulo: “Sintesis y caracterización de películas delgadas de BNT preparadas por sol gel."
  Especialidad: Ingeniería Química.
  Director(es) de tesis: Dr. José Martín Yáñez Limón.
  Fecha de obtención de grado: 23 de noviembre de 2017
  Institución: Universidad Juárez Autónoma de Tabasco.
  
  PREMIOS Y DISTINCIONES.
  
  7.6. RAFAEL RAMÍREZ BON.
  7.6.1. Becario de la Fundación Fullbright
  7.6.2 Reconocimiento de Perfil deseable para profesores de tiempo completo.
  7.7. JOSE MARTIN YAÑEZ LIMON
  7.6.2 Reconocimiento de Perfil deseable para profesores de tiempo completo.
  
  PARTICIPACIÓN EN COMISIONES DE EVALUACIÓN, COMITÉS TÉCNICOS Y COMITÉS EDITORIALES DE REVISTAS.
  
  8.4. ALBERTO HERRERA GÓMEZ.
  8.4.1. Miembro del Banco Iberoamericano de Evaluadores en la Nube, Presente. Debido a su reconocido prestigio y trayectoria como investigador y experto, en el ámbito de su especialidad.
  8.4.2 participar en la evaluación del proyecto MEX 852 74, con titulo DESARROLLO DE UNA PLATAFORMA DE ALTA RESISTENCIA Y BAJO PESO PARA LA INDUSTRIA DE TRANSPORTE MEDIO Y PESADO presentado en respuesta al Estimulo Fiscal a la Investigación y Desarrollo de Tecnología, 19 jul 2017 2.
  8.4.3 Evaluador en línea de los proyectos sometidos en el marco de la Convocatoria de Cátedras CONACYT 2017, Mayo 2017.
  8.4.4 Comité multidisciplinario de evaluación de Becas CONACYT Gobierno del Estado de Querétaro, 2 de Junio del 2017.
  8.4.5 Evaluador de pre propuestas de la Convocatoria de Investigación en Fronteras de la Ciencia 2016 01, CONACYT, 16 04 2017. 5.
  8.4.6 Reconocimiento perfil PRODEP convocatoria 2017 , 19 Julio 2017 6.
  8.4.7 Reconocimiento como integrante del Comité técnico de normalización del IMEDAL 2017.
  8.4.8 Evaluador de proyecto PEI en Convocatoria 2017.
  8.4.9 Evaluador de proyectos postulados para Estímulos fiscales, 04/10/2017
  8.4.10. Comisión de Ciencia Básica del Conacyt.
  8.8. J. GABRIEL LUNA BÁRCENAS.
  8.8.1. Apoyo al fortalecimiento y desarrollo de la infraestructura científica y tecnológica, Laboratorios Nacionales.
  8.8.2. Evaluador de proyectos de la convocatorias: BECAS CONACYT al EXTRANJEROS 2016; Estancias Sabáticas en el Extranjero, Estancias Sabáticas Nacionales
  8.8.3. Revisor de artículos en las revistas: International Journal of Biological Macromolecules, Mat. Chem. and Phys., Materials Science and Engineering C, RSC Advances.
  8.11. RAFAEL RAMÍREZ BON.
  8.11.1. Miembro de la Comisión Revisora del área VII del Sistema Nacional de Investigadores
  8.11.2. Revisor de artículos en: ACS Crystal Growth
  8.12. JOSÉ MARTÍN YÁÑEZ LIMÓN.
  8.12.1. Evaluador de proyectos del fondo Institucional Fronteras de la Ciencia
  8.12.2. Fondo de Estímulos a la Innovación.
  8.12.3. fondo Mixto Conacyt Gobierno de Yucatán.
  8.12.4. Revisor de artículos en las revistas Journal of Materials Science, Materials Science and
  8.12.5 Engineering b, Journal of Non Crystalline solids, International Journal of thermophysics.
  
  PROYECTOS FINANCIADOS POR AGENCIAS NACIONALES O INTERNACIONALES DE APOYO A LA CIENCIA (CONACYT, COSNET, FUNDACIÓN ROCKEFELLER, ETC.)
  
  Proyecto: ESTUDIO DE LAS PROPIEDADES FISICAS Y ESTRUCTURALES DE MATERIALES OXIDOS Y SUS INTERFASES
  Clave: 000000000207088
  Vigencia: 2015-04-24 a 2017-05-24
  Responsable: Dr. José Martín Yáñez Limón
  Participantes: Dr. Rafael Ramírez, Dr. Gustavo Zambrano
  Fuente de financiamiento: Conacyt
  Monto: 84,000
  
  Proyecto: Estudio de materiales ferroelectricos tipo PZT, BNT, KNN y compositos ferroelectrico-PMMA.
  Clave: 240460
  Vigencia: 2015-04-24 a 2018-04-24
  Responsable: Dr. José Martín Yáñez Limón
  Participantes: Dr. Rafael Ramírez, Dra. Ma. Dolores Durruthy Rodriguez, Dra. Carmen Rodriguez Aranda, Dr. Oscar Gómez Guzman, Dra. Guadalupe Barreiro Rodríguez. Dr. Rodrigo Mayen Mondragon, Manuel Quevedo Lopez
  Fuente de financiamiento: Conacyt
  Monto: 1,601,958.00
  
  Proyecto: Estudio de calcogenuros metálicos como canal semiconductor en transistores de efecto de campo .
  Clave: CB-2014-01-242549
  Vigencia: 2016-04-18 a 2018-04-16
  Responsable: Dr. Rafael Ramírez Bon
  Participantes:
  Fuente de financiamiento: CONACYT
  Monto: 1235
  
  Proyecto: Nitridation of high-k dielectric nanofilms as a barrier to indium and gallium diffusion in InGaAs-based MOS devices
  Clave: .
  Vigencia: 2017-07-03 a 2019-08-05
  Responsable: Dr. Alberto Herrera Gómez
  Participantes: Andrés de Luna Bugallo
  Fuente de financiamiento: CONACYT-CONTEX
  Monto: 1,115,625
  
  Proyecto: Proyecto de Infraestructura
  Clave: 271031
  Vigencia: 2017-07-17 a 2018-01-15
  Responsable: Dr. Rafael Ramírez Bon
  Participantes:
  Fuente de financiamiento: CONACYT
  Monto: 500
  
  PROYECTOS Y SERVICIOS SOLICITADOS POR EL SECTOR INDUSTRIAL, EL DE SERVICIOS Y OTROS SECTORES, DESARROLLADOS EN EL MARCO DE UN CONTRATO (RECURSOS PROPIOS)
  
  Proyecto: Curso de Técnicas analíticas EDS, WDS y EBSD en SEM FE
  Vigencia: 2017-08-08 a 2017-08-10
  Responsable: Dr. José Martín Yáñez Limón
  Participantes: Dr. José Manuel Juarez García, Ing. Eleazar Urbina Alvarez, M. en C. Adair Jimenez Nieto.
  Empresa/dependencia solicitante: CIMAV Chihuahua
  Tipo de proyecto: Asesoría
  
  Proyecto: Caracterización y Análisis de Materiales Magnetocaloricos
  Vigencia: 2017-08-08 a 2017-08-10
  Responsable: Dr. José Martín Yáñez Limón
  Participantes: Dr. José Manuel Juárez García, Ing. Eleazar Urbina Álvarez, M. en C. Adair
  Empresa/dependencia solicitante: CIDESI-QRO.
  Tipo de proyecto: Curso-corto.
  
  Proyecto: Análisis de Mediciones de Angulo De Contacto y Perfilometría en Aceros Eléctricos
  Vigencia: 2017-11-02 a 2017-11-02
  Responsable: Dr. José Martín Yáñez Limón
  Participantes: Dra. Susana Meraz Dávila
  Empresa/dependencia solicitante: CIDESI
  Tipo de proyecto: Servicios de Laboratorio

Publicaciones 2018
- 1.- PROFESORES VISITANTES
  
  Nombre del investigador: ANTONIO TIBURCIO
  Institución de procedencia: UNIVERSIDAD NACIONAL JORGE BASADRE GROHMANN
  Motivo de la visita: Recubrimientos duros tipo TiAl TiAlN CrAl CrAlN caracterización de materiales mediante EBSD
  Periodo de la estancia: 2017-04-01 a 2018-03-31
  Fuente de financiamiento: Alianza del pacífico
  Investigador anfitrión: José Martín Yáñez Limón
  
  Nombre del investigador: CELIA LIZETH GÓMEZ MUÑOZ
  Institución de procedencia: UNIVERSIDAD NACIONAL AUTÓNOMA DE MEXICO
  Motivo de la visita:
  Periodo de la estancia: 2017-08-01 a 2018-07-31
  Fuente de financiamiento: CONACYT
  Investigador anfitrión: Alberto Herrera Gómez
  
  Nombre del investigador: OSMANY GARCÍA ZALDIVAR
  Institución de procedencia: UNIVERSIDAD DE LA HABANA
  Motivo de la visita: Académico y Científico
  Periodo de la estancia: 2018-05-13 a 2018-05-19
  Fuente de financiamiento: Cinvestav-Unidad Querétaro. Proyecto CB-240460 del CONACYT
  Investigador anfitrión: José Martín Yáñez Limón
  
  Nombre del investigador: GUSTAVO ZAMBRANO ROMERO
  Institución de procedencia: Universidad del Valle Cali Colombia
  Motivo de la visita: Colaboración Académica y Científica
  Periodo de la estancia: 2018-08-01 a 2018-12-30
  Fuente de financiamiento: Recursos propios
  Investigador anfitrión: José Mauricio López Romero
  
  Nombre del investigador: FRANCISCO CALDERÓN PIÑAR
  Institución de procedencia: UNIVERSIDAD DE LA HABANA
  Motivo de la visita: Académico Científico
  Periodo de la estancia: 2018-11-03 a 2018-12-03
  Fuente de financiamiento: RED NT-02 de Materiales Ferroicos
  Investigador anfitrión: José Martín Yáñez Limón
  
  3. INFORMACIÓN DE ESTANCIAS POSTDOCTORALES
  
  Nombre del posdoctorante: ALAIN PÉREZ RODRÍGUEZ
  Institución de procedencia: UNIVERSIDAD DE SONORA
  Tema de investigación: ESTUDIO DE PROPIEDADES ÓPTICAS, LUMINISCENTES Y ESTRUCTURALES DE NANOPARTÍCULAS DE COMPUESTOS DE TIE
  Periodo de la estancia: 2017-08-01 a 2018-07-31
  Fuente de financiamiento: CONACYT
  Investigador anfitrión: Rafael Ramírez Bon
  
  Nombre del posdoctorante: Irela Santos Sauceda
  Institución de procedencia: UNIVERSIDAD DE SONORA
  Tema de investigación: Preparación de materiales compuestos basados en matriz polimérica y semiconductores mediante electrohilado.
  Periodo de la estancia: 2018-08-01 a 2019-07-31
  Fuente de financiamiento: CONACYT
  Investigador anfitrión: Rafael Ramírez Bon
  Nombre del posdoctorante: FERNANDO DANIEL CORTES VEGAS
  Institución de procedencia: UNIVERSIDAD MSNH
  Tema de investigación: SÍNTESIS Y CARACTERIZACIÓN DE MATERIALES FERROELÉCTRICOS LIBRES DE PLOMO PARA SU APLICACIÓN EN SISTEMAS OPTOELECTRÓNICOS
  Periodo de la estancia: 2018-08-01 a 2019-07-31
  Fuente de financiamiento: CONACYT
  Investigador anfitrión: José Martín Yáñez Limón
  
  5. PRODUCTOS DE INVESTIGACIÓN Y DESARROLLO
  
  5.1.1. Artículos originales de investigación.
  
  5.1.1.a. Publicados en extenso en revistas de prestigio internacional con arbitraje estricto.
  
  5.1.1.a.1. A. Gómez Sanchez, E. Prokhorov, J. Gabriel Luna Bárcenas, A.G. Mora García, Y. Kovalenko, E.M. Rivera Muñoz, M.G. Raucci and G. Buonocore. Chitosan-hydroxyapatite nanocomposites: Effect of interfacial layer on mechanical and dielectric properties. Materials Chemistry and Physics 217: 151-159: 2018. The aim of this work is to investigate properties of interfacial layer in chitosan-hydroxyapatite nanoparticles (CSnHAp) films. Simultaneous mechanical and dielectric percolation phenomena in films are observed for 30–40% of nHAp loadings. Structure, electrical and mechanical properties of composites and their dependencies on the hydroxyapatite concentrations are investigated by SEM, thermogravimetry, FTIR spectroscopy, nanoindentation and dielectric spectroscopy measurements. Hardness, reduced elastic modulus, conductivity and dielectric constant exhibit a strong dependence on nanoparticle concentration such that maximum values of referred properties are obtained at 30–40 wt % of nHAp. A three-phase model is used to include chitosan matrix, nanoparticles of hydroxyapatite and interfacial layer with dielectric constant higher than that of chitosan and hydroxyapatite. This layer between nanoparticles and matrix is due to strong interactions between chitosan393939s side groups with PO4 3− of hydroxyapatite. By performing simulations of spectroscopy measurements in the Hz- GHz frequency range we show that a maximum in all properties is traceable to the existence of overlapping and decreasing of thickness of interfacial layer. Our study proposes a systematic approach to design smart materials for bone tissue engineering.
  
  5.1.1.a.2. A. Gómez Sanchez, E. Prokhorov, J. Gabriel Luna Bárcenas, A.G. Mora García, Y. Kovalenko, Eric M. Rivera Muñoz, M.G. Raucci and G. Buonocore. Effect of chemical oxidation routes on the properties of chitosan-MWCNT nanocomposites. Current Nanoscience 4(1): 1-8: 2018. Background. Chitosan-multiwall carbon nanotubes (CS-MWCNTs) nanocomposites are an attractive material due to their biocompatibility and possibility to produce nanocomposites with high conductivities and high mechanical properties. Both electrical and mechanical properties depend upon the method of MWCNT chemical oxidation; this oxidation affects on the interaction of CS side groups with MWCNT’s surface groups. However, in the literature there are no reports on how different methods of MWCNT oxidation will affected the electrical and mechanical properties of related nanocomposites. Objective. The objective of this work is to probe CS-MWCNT nanocomposite’s electrical and mechanical properties by taking advantage of the presence of interfacial layer and its dependence on the methods of MWCNTs chemical oxidation routes. Method. Nanocomposites are prepared with non-functionalized MWCNT and functionalized MWCNTs obtained by chemical oxidation treatments in HNO3 in H2SO4/NHO3 mixtures and commercially carboxyl-terminated MWCNTs, respectively. Properties of MWCNTs and nanocomposites were evaluated using SEM, FTIR, Raman, TGA, XRD, impedance and mechanical measurements. Results. It was shown that different chemical oxidation routes produce MWCNTs with different number of carboxylic groups and defects which influence the interaction between MWCNTs with CS matrix and thickness of interfacial layer between MWCNTs and CS matrix. Additionally, it was shown that the formation of the interfacial layer dominates on the dispersion of MWCNTs and affected on the electrical and mechanical percolation effects. Conclusion. It was shown that contrary to many studies previously reported, good dispersion of MWCNT does not guarantee obtained nanocomposite’s with the best electrical and mechanical properties.
  
  5.1.1.a.3. A. Moreno Bárcenas, Juan Francisco Pérez Robles, I.E. Pech Pech and A. García García. Facile In-situ Reduction Method for Preparation of GO-Pd Catalysts. International Journal of Electrochemical Science 13: 3171-3184: 2018. In recent years, many researchers have developed techniques for the production of new nanostructured materials. The present work focused on the development of an environmentally friendly synthesis route with excellent catalytic properties that is; an alternative to the synthesis of nanoparticles supported on graphene oxide (GO), and it provides significant reduction in secondary waste. This method was designed for in situ reduction of highly dispersed Pd nanoparticles on the surface of GO for use in catalytic applications. X-ray diffraction measurements determined that the method yielded Pd mainly in the metallic state. Electrochemical characterization by cyclic voltammetry measurements showed that the increased crystallinity of Pd improved the exposure of the active electrochemical sites that carry out the oxygen reduction reaction (ORR). These results allow the design and control of the in-situ growth of nanostructured materials.
  
  5.1.1.a.4. A.G. Mora García, Haide Ruiz Luna, M. Mosbacher, R. Popp, Uwe Schulz , Uwe Glatzel and Juan Muñoz Saldaña. Microstructural analysis of Ta-containing NiCoCrAlY bond coats deposited by HVOF on different Ni-based superalloys. Surface and Coatings Technology 354: 214-225: 2018. The microstructural and chemical evolution after different processing steps of Ta-containing NiCoCrAlY bond coats (BC) sprayed by high velocity oxy-fuel on Ni-base superalloy (SA) substrates, top-coated with 7YSZ and furnace cycled at 1100 °C focusing along the BC/SA interfaces is presented. Three superalloys were selected considering their Ta content relative to that within the BC: a) no Ta in the superalloy composition (IN100) and either b) similar or c) higher Ta content with respect to the BC (M247LC SX and CMSX-4, respectively). The processing conditions were as-sprayed, as-annealed, after EB-PVD deposition of a 7YSZ top coat, and after furnace cyclic tests (1100 °C/120 h). The evolution of chemical composition after the different process steps are presented that include a normalization criteria to a Ni-Al-Cr system, elemental profiles as well as Weibull distribution plots of minor containing elements such as Ti, Ta, Mo, or W at the BC/SA interface. The effect of Ta was activated in some coated substrates by the presence of Ti and C in the superalloy consisting of inward Tadiffusion, trapping of outward diffusing Ti and the subsequent formation of (Ta, Ti)-rich carbides in the BC avoiding possible segregation effects as titanium oxide in the oxide scale.
  
  5.1.1.a.5. Alberto Herrera Gómez, Dagoberto Cabrera Germán, Anthony Dutoi , Milton Vázquez Lepe, Servando Aguirre Tostado, Piero Pianetta , Dennis Nordlund , Orlando Cortazar Martínez, Alejando Torres Ochoa, Oscar Ceballos Sánchez and Lizeth Gómez Muñoz. Intensity modulation of the Shirley background of the Cr 3p spectra with photon energies around the Cr 2p edge. Surface and Interface Analysis 50: 246-252: 2018. ISSN 1096-9918. The background in X‐ray photoelectron spectroscopy data originates, partially, from inelastically scattered photoelectrons. In fact, the current theoretical methods for calculating the background intensity are based on electron energy losses. However, a critical part of the experimental signal, which is known as the Shirley background, cannot be described within the current formalisms. This suggests that the Shirley electrons are not associated with energy losses of photoelectrons and must originate from a different photoexcitation phenomenon with a cross section of its own. We propose a mechanism based on core channeling as the physical origin of the Shirley signal..
  
  5.1.1.a.6. C. E. Pérez García, S. Meraz Dávila, I. R. Chávez Urbiola, F.J. Willars Rodríguez, R. Ramírez Bon and Yurii Vorobiov. Chemical deposition of ITO/CdS/PbS/C for low voltage photosensor. Int. J. Electrochem. Sci., 13: 3452-3459: 2018. In this work we report the assembling and electrical characterization of ITO/CdS/PbS/C heterostructured photosensor. The assembling of the photosensor was done completely by solution processing, employing the chemical bath deposition (CBD) technique to deposit both semiconductor layers in the device, CdS and PbS. ITO-coated glass was used as substrate and graphite ink electrodes as back contacts. The electrical output response of the photodevices was analyzed in dark and under illumination at different intensities. Its sensitivity was examined working as photodiode at zero volts. The results showed the rectifying character of the heterostructure and light sensitivity with linear photoresponse under illumination. The measured photoresponsivity of the photosensor was 1.22 A/W, which is around 50 % of an ideal characteristic of a sensor for a given spectral range..
  
  5.1.1.a.7. Diego Osorio Rivera, Gerardo Torres Delgado, Joaquín Márquez Marin, Rebeca Castanedo Pérez, M.A. Aguilar Frutis and Orlando Zelaya Ángel. Cuprous oxide thin films obtained by spray-pyrolysis technique. Mater Electron 29: 851-857: 2018. Cu–O system thin films of 500 nm thickness were deposited on glass substrates by the spray-pyrolysis technique. The substrate temperatures ( Ts) were in the 270– 380 °C range with steps of 20 °C, including Ts = 340 °C. The precursor solution was obtained starting from copper nitrate (Cu(NO3)2), glucose ( C6H12O6) as reducing agent, and a deionized water-2 propanol mixture as solvent. XRD patterns revealed polycrystalline films with different phases depending on the Ts: (i) Cu2O 434343 Cu for 270 °C ≤ Ts ≤ 310 °C, (ii) Cu2O for 330 °C ≤ Ts ≤ 340 °C and (iii) Cu2O 434343 CuO for 360 °C ≤ Ts≤380 °C. A crystallite size of 21 nm was obtained for cuprite phase ( Cu2O). Cu2O films exhibited p type conductivity, electrical resistivity of 102 Ω-cm, electrical mobility 4.6 cm2 V−1s−1 and major carrier concentration of 7.2 × 1015 cm−3. A maximum optical transmittance of 75% was obtained in the 650–800 nm range, with an abrupt absorption edge around 520 nm corresponding to the optical gap of 2.37 eV, which was calculated assuming the model for forbidden direct transition (n = 2/3). Uniform deposits and spherical aggregates of the order of 80 nm were observed using Field Emission Scanning Electronic Microscope..
  
  5.1.1.a.8. Diego Osorio Rivera, Gerardo Torres Delgado, Joaquín Márquez Marin, Rebeca Castanedo Pérez, Miguel Angel Aguilar Frutis and Orlando Zelaya Ángel. Cd2SnO4 thin films obtained by spray pyrolysis using RTA postdeposition treatments. Journal of Materials Science: Materials in Electronics 29: 20470-20475: 2018. Cd–Sn system thin films were deposited by the spray pyrolysis technique to obtain Cd2SnO4. The solution consisted of tin chloride and cadmium acetate, as sources of Cd and Sn, which were dissolved in a water/isopropanol (4:1) mixture, maintaining an atomic ratio Cd/Sn = 6. The substrate temperature Ts was varied in the 410–500 °C range. XRD patterns showed Cd2SnO4 434343 SnO2 crystals, decreasing the contribution of SnO2 at lower Ts’s. The films (~ 160 nm) were subjected to postdeposition treatments of rapid thermal annealing (RTA) at 600 °C during 25 s, under two different atmospheres argon and vacuum. The effect of RTA treatments on the properties of this type Cd2SnO4 films has not been formerly reported. In this work, an important improvement in the crystalline quality of the films was obtained after this treatment, showing mainly the Cd2SnO4 phase. Best structural, optical and electrical properties were obtained for films treated in argon. These films showed a preferential orientation along the (222) plane of the Cd2SnO4 with a crystallite size of 35 nm, transmittance higher than 75% (400 ≤ λ ≤ 1500 nm), a resistivity of 2.6 × 10−3 Ω cm and a direct band gap of 3.51 eV.
  
  5.1.1.a.9. E. Cruz Valeriano, D.E. Guzmán Caballero, T. Escamilla Díaz, A. Gutierrez Peralta, Susana Meraz Davila , J.A. Torres Ochoa, J.J. Gervacio Arciniega, E.A. Murillo Bracamontes, C.I. Enriquez Flores, Rafael Ramírez Bon, Joel Moreno Palmerin and José Martín Yáñez Limón. Dielectric constant measurement using atomic force microscopy of dielectric films: a system theory approach. Materials Science 124(667): 1-9: 2018. A technique was developed to measure dielectric constant at microscale based on the system theory approach using an atomic force microscopy (AFM), this makes possible the electrical characterization of dielectric materials using an optimized instrumentation. This technique is capable of measuring capacitance on either metallic contact–insulator–metallic contact or metallic contact–insulator with the AFM tip as the upper contact, the dielectric constant can be calculated from these results. The technique compares the frequency response between the input voltage and the output voltage of an equivalent RC-circuit (resistance–capacitance) in the frequency range 1 Hz–60 kHz. This comparison is analyzed using a transfer function model and a least-squares process to get the time constant involved in this kind of circuit, facilitating the implementation of this technique with any atomic force microscopy equipment. Additionally, the measurements can be carried out in a single point or in a mapping. The measurements were carried out on two hybrid films, PMMA–TiO2–SiO2 and PMMA–TiO2–BT, which were prepared by sol–gel technique and deposited on indium tin oxide (ITO)-coated glass substrates. The results obtained with this technique agreed with conventional measurements that use commercial capacitance–voltage analyzer, and indicated that dielectric constant is 11.31 for PMMA–TiO2–SiO2, and 15.41 for PMMA–TiO2–BT.
  
  5.1.1.a.10. E. Flores García, M.A. Hernández Landaverde, P. González García and R. Ramírez Bon. Copper Incorporation into CdS Thin Films by Ionic Exchange in an Aqueous Solution Process at Room Temperature. Journal of Spectroscopy 2018(1095204): 1-8: 2018. Cadmium sulfide (CdS) thin films were deposited, on glass substrates, at 70°C for 120 min using an ammonium-free chemical bath deposition process. After deposition, the films were placed in a CuCl2 solution for 45, 60, 75, and 90 min, respectively, for their ion exchange, generating CdxCu1-xS films. ,e obtained films were analyzed by X-ray diffraction, Raman spectroscopy, X-ray wavelength dispersion spectrometry, and scanning electron microscopy. ,e reference CdS films showed a homogeneous appearance and a yellowish color; elapsing the immersion time, the films changed their color showing a greenish appearance. ,e X-ray analysis indicated that the CdS films developed a hexagonal structure with preferential orientation along the plane (002). During the ion exchange, a decrease in the intensity of the reflection (002) was observed as well as a slight displacement of this reflection towards higher values of 2θ derived from the substitution of Cd atoms by Cu atoms. ,e WDS analysis revealed that approximately 10% of the cadmium atoms were replaced by copper ones after 90 min of immersion.
  
  5.1.1.a.11. E. Flores García and Rafael Ramírez Bon. Statistical Analysis of Sputter Parameters on the Properties of ZnO Thin Films Deposited by RF Sputtering. Journal of Electronic Materials 47(9): 5537-5547: 2018. Zinc oxide (ZnO) thin films were deposited on commercial glass substrates at room temperature by RF magnetron sputtering. The effect of the sputtering variables such as RF power, argon flow and deposition time on the structural, electrical and optical properties was studied and discussed using a full 3k design of experiments. The properties of the deposited films were determined from x-ray diffraction, 3D optical microscopy, four-point probe and UV–Vis spectroscopy measurements. The x-ray diffraction patterns revealed a wurtzite-like crystalline structure of the ZnO films, with preferential orientation along the (002) direction. Depending on deposition parameters, the thickness of the films varied in the range of 23–163 nm and their resistivity was in the range from 100 Ω cm to 105 Ω cm. Additionally, all films show good optical transmittance (higher than 70%) in the visible spectral region and energy band gap values in the range of 2.27–2.31 eV. On the other hand, a multiple linear regression analysis was performed to predict the responses (average thickness, resistivity, and energy band gap) in terms of the significant factors. The results suggest that the time, power-time and flow-time are significant predictors for the thickness model; meanwhile, flow, flow2, power-flow, and power-time are significant for the resistivity model. In the energy band gap model, power, flow, time and flow2 were signific.
  
  5.1.1.a.12. E. Prokhorov, A. Gómez Sanchez, J. Gabriel Luna Bárcenas, A.G. Mora García, Y. Kovalenko, E.M. Rivera Muñoz, M.G. Raucci and G. Buonocore. Chitosan-hydroxyapatite nanocomposites: Effect of interfacial layer on mechanical and dielectric properties. Materials Chemistry and Physics 217: 151-159: 2018. The aim of this work is to investigate properties of interfacial layer in chitosan-hydroxyapatite nanoparticles (CS-nHAp) films. Simultaneous mechanical and dielectric percolation phenomena in films are observed for 30–40% of nHAp loadings. Structure, electrical and mechanical properties of composites and their dependencies on the hydroxyapatite concentrations are investigated by SEM, thermogravimetry, FTIR spectroscopy, nanoindentation and dielectric spectroscopy measurements. Hardness, reduced elastic modulus, conductivity and dielectric constant exhibit a strong dependence on nanoparticle concentration such that maximum values of referred properties are obtained at 30–40 wt % of nHAp. A three-phase model is used to include chitosan matrix, nanoparticles of hydroxyapatite and interfacial layer with dielectric constant higher than that of chitosan and hydroxyapatite. This layer between nanoparticles and matrix is due to strong interactions between chitosan393939s side groups with PO43− of hydroxyapatite. By performing simulations of spectroscopy measurements in the Hz-GHz frequency range we show that a maximum in all properties is traceable to the existence of overlapping and decreasing of thickness of interfacial layer. Our study proposes a systematic approach to design smart materials for bone tissue engineering.
  
  5.1.1.a.13. E.G. Alvarez Coronado, L.A. González , J.C. Rendón Ángeles, M.A. Meléndez Lira and Rafael Ramírez Bon. Study of the structure and optical properties of Cu and Mn in situ doped ZnS films by chemical bath deposition. Materials Science in Semiconductor Processing 81: 68-74: 2018. The in situ doping of ZnS films with Cu and Mn ions was obtained by the chemical bath deposition method. The resulting films, with cubic crystalline structure, were specular, adherent, and optically transparent. The analysis from X-ray photoelectron spectroscopy confirmed the effective insertion of Cu and Mn ions and the formation of defects in the crystalline structure of the ZnS films. Moreover, the morphology analysis showed that the presence of the doping ions in the reaction solution promoted the deposition of films with better uniformity. The effects of the doping agents in the optical properties of the ZnS films were also analyzed. First of all, it was observed a redshift of the optical absorption edge, and therefore, the decrease of the optical band gap. Afterwards, the roomtemperature photoluminescence spectroscopy confirmed the effective activation of the ZnS film with Cu and Mn ions, when the luminescence emission centered at 470 nm was shifted to longer wavelengths (green-orange emissions centered at 530 nm). Based in these results, it is concluded that the process reported here could be used as an original alternative for the preparation of ZnS films with a mixture of other doping agents.
  
  5.1.1.a.14. F.J. Flores Ruíz, M.D. Tucker, K.D. Bakoglidis, X. Yu, A.J. Gellman, Alberto Herrera Gómez, L. Hultman, J. Rosen and E. Broitman. Micro-tribological performance of fullerene-like carbon and carbon-nitride surfaces. Tribology International 128: 104-112: 2018. ISSN 0301 679. We studied the microtribological behavior of amorphous and fullerene-like (FL) carbon and carbon-nitride coatings deposited by filtered-cathodic-arc. All films show similar friction coefficients but different wear mechanisms. The FL films exhibit a surface swelling with the formation of a layer that thickens during the test, limiting wear and maintaining a low friction. X-ray photoelectron spectroscopy on worn FL film surfaces show an increase in the sp2-content, indicating that the lubricious layer generated by the wear process is probably the result of re-hybridization due to plasticity induced by localized shear. In contrast, the wear results of the amorphous films, involving tribomechanical and tribochemical surface phenomena, show that the surface layer formed during sliding is a precursor to the onset of wear..
  
  5.1.1.a.15. F.J. Willars Rodríguez, I.R. Chávez Urbiola, M.A. Hernández Landaverde, P.Vorobiov, R. Ramírez Bon and Yurii Vorobiov. Effects of tin-doping on cadmium sulfide (CdS:Sn) thin-films grown by lightassisted chemical bath deposition process for solar photovoltaic cell. Thin Solid Films 653: 341-349: 2018. Thin transparent films of tin-doped cadmium sulfide (CdS) on different substrates were obtained by an ammoniafree chemical bath deposition technique assisted by ultraviolet illumination with a wavelength of 265 nm. Several sets of films were deposited by varying the amount of SnCl2 in the reaction bath and analyzed by X-ray diffraction, scanning electron microscopy, optical transmission and reflection spectroscopy and current versus voltage measurements. In the doped films, the position of the main X-ray diffraction peak is shifted to larger angles showing a decrease of the crystal lattice constant; this is attributed to the substitution of tin by cadmium in the doping process. The morphological characterization of the doped films shows homogeneously distributed spherical grains with an average grain size of 58.5 nm. The grains are composed of crystallites with an average size of 23 nm; the surface of the doped films does not show conglomerates that are typical for materials grown by the chemical bath deposition technique. The electrical properties reveal a decrement in the resistivity of an order of magnitude with respect to the films without doping. The optical results exhibit variation in the band gap that we consider as the consequence of the films393939 porosity; the theoretical analysis presented confirms this point. The films show a reflectance at a normal incidence less than 30%, which is an indication of their good optical quality. The main effects of the tin doping on the CdS films were observed as changes in the crystal structure and electrical resistivity.
  
  5.1.1.a.16. Héctor Eduardo Silva López, Marcelino Becerril Silva , Angel Guillen Cervantes, Orlando Zelaya Ángel and R. Ramírez Bon. Physical Properties of Sputtered Indium-doped ZnO Films Deposited on Flexible Transparent Substrates. Materials Research 21(6): 1-6: 2018. Indium-doped zinc oxide (IZO) polycrystalline thin films were grown on polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and as reference on 7059 Corning glass substrates at room temperature by radio frequency magnetron sputtering from a target prepared with a mixture of ZnO and In2 O3 powders. The structural, optical, and electrical properties of the films were analyzed and compared. The IZO polycrystalline films showed n-type conductivity. The electrical resistivity drops significantly, and the carrier concentration increases as a consequence of In incorporation within the ZnO crystalline lattice. In both cases the changes are of several orders of magnitude. The resistivity obtained was 3.1 ± 0.5 x 10-3 Ω-cm for an IZO sample grown on PET with a carrier concentration of 3.1 ± 0.7 x 1020 cm-3, the best mobility obtained was 27.7 ± 0.8 cm2 V-1s-1 for an IZO sample grown on PEN. From the results, we conclude that n-type IZO polycrystalline films with high transmittance, high mobility and low resistivity were obtained on flexible transparent substrates..
  
  5.1.1.a.17. I.R. Chávez Urbiola, F.J. Willars Rodríguez, Rafael Ramírez Bon, P. Vorobiev and Yuri Vorobiev. Development and characterization of photodiode n-ZnO/p-Si by Radio Frecuency Sputtering, a sensor with low voltage operation and its response to visible and UV light. Thin Solid Films 669: 364-370: 2018. The heterostructure n-ZnO/p-Si was fabricated by Radio Frequency Sputtering. The photodiode characteristics were obtained from current-voltage curves. The photovoltaic effect and photodiode sensitivity were measured by transient photo-current, both under UV-Light and VIS-Light. The results show a well define rectification character, the relation between current at forward bias and reverse bias was about two orders of magnitude. The photovoltaic effect was observed for UV and Vis light; the photodiode presents a higher sensitivity for Vis light than for UV light. The transient-photocurrent was recorded at a different voltage (−2, −1 and 0 V) under Vis and UV light. The photo-response for UV and Vis light at −1 V were 1.71 mA/W and 9.35 mA/W and for 0 V were 0.62 mA/W and 0.70 mA/W respectively.
  
  5.1.1.a.18. J.E. Samaniego Benitez, A. García García and R. Ramírez Bon. Synthesis of coppers sulfite hexapods by simple hydrothermal route. Materials Letters 221: 224-227: 2018. In this work, the obtaining of Cu7.2S4hexapods by a hydrothermal process of two stages is reported. First,hexapods of Cu2O were obtained using copper chloride, and then in the second stage, sodium sulfite wasused at different weight ratios in relation with Cu2O for the transformation into Cu7.2S4. The XRD, SEM,Raman, and XPS studies show that at 1:1 wt-ratio the conversion is not completely achieved and thepresence of the two phases in the hexapod is detected. By increasing the weight-ratio to 1:2, Cu7.2S4hex-apods with smooth surface were totally transformed into Cu7.2S4ones with modified surface completelycovered by nanosheets.
  
  5.1.1.a.19. J.E. Samaniego Benitez, J. Ramírez Aparicio, I.R. Chávez Urbiola, A. García García, Juan Francisco Pérez Robles and R. Ramírez Bon. Synthesis and photocatalysis study of multiwalled carbon nanotubes grown in a lead-based microspheriocal support. Fullerenes, Nanotubesa and Carbon Nanostructures 26(6): 370-378: 2018. Plumbonacrite films were used as support material for growth of carbon nanotubes and the resulting nanocomposite was tested as photocatalysts for the degradation of methylene blue dye. The plumbonacrite films were deposited on silicon substrates by a simple alkaline chemical bath deposition process. After the CNT growth process, the resulting nanocomposite samples were analyzed by X-ray diffraction, Raman spectroscopy and scanning electron microscopy. The high temperature during the CNT growth process decomposed the plumbonacrite material into lead microspheres, which were covered by the CNT constituting the nanocomposite films. Afterwards, the nanocomposite films were applied for the photodegradation of methylene blue molecules using natural sunlight. The nanocomposite films were reused for up to three cycles obtaining efficiencies in the degradation of the dye superior to 92% and a first order kinetics with rate constants of 8.9 × 10−3 min−1 in a maximum irradiation time of 240 minutes.
  
  5.1.1.a.19. Juan Muñoz Saldaña, Uwe Schulz , G.C. Mondragón Rodríguez, Luis Alberto Caceres Díaz and H. Lau. Microstructure and lifetime of Hf or Zr doped sputtered NiAlCr bond coat/ 7YSZ EB-PVD TBC systems. Surface and Coatings Technology 335: 41-51: 2018. NiAlCr-X overlay coatings deposited by magnetron sputtering on IN100 and CMSX-4 superalloys and thereafter top-coated with 7YSZ thermal barrier coatings by EB-PVD were investigated with emphasis on the effects of superalloy type and Hf or Zr doping. The sputtered films in the “as coated” condition (after EB-PVD deposition) showed strong diffusion effects of different elements from the superalloys. The measured phase content of β and γ′ was in good agreement with calculated data obtained from experimental compositions normalized to a Ni-Al- Cr system following the guidelines of site preference of ternary alloying elements. Microstructure evolution and failure characteristics after furnace cyclic tests at 1100 °C were investigated as well. The lifetime of the coatings is equivalent to standard MCrAlY TBCs systems and is compared to PtAl and NiCoCrAlY coatings from literature. The effects of microstructure and elements diffusing from the substrates into the bond coat (Ti, Co, Mo and Ta) in combination with the effect of Hf- or Zr-doping is presented and discussed.
  
  5.1.1.a.20. L. Vargas Campos, S. Valle Guadarrama, Fernando Martínez Bustos, Y. Salinas Moreno, Consuelo Lobato Calleros and Amira Daniela Calvo-López. Encapsulation and pigmenting potential of betalains of pitaya (Stenocereus pruinosus) fruit. Journal of Food Science and Technology-Mysore 55(7): 2436-2445: 2018. Betalains of pitaya (Stenocereus pruinosus) fruit can be used as natural pigment, but they are susceptible to deterioration by temperature, pH, and presence of sugars. In this work, a refined extract (Er) of betalains was obtained through aqueous two-phase extraction, which reduced significantly sugar and mucilage contents. In order to favor stability, the encapsulation of the refined extract was evaluated, with native potato starch that was modified through phosphorylation or succinylation and reactive extrusion. Starches were evaluated in terms of degree of substitution, Fourier transform infrared spectroscopy, scanning electron microscopy, and viscous behavior. Microcapsules were formed by spray drying and their stability was evaluated at 40 C for 39 days and by using them as pigmenting agent of yogurt at 4 C during 32 days. The behavior of modified starches during encapsulation was superior to that of commercial N-Lok starch. Microcapsules based on modified starches showed better pigmenting potential and higher stability than Er and microcapsules based on N-Lok starch. The separation of betalains from pitaya fruit may be a good alternative for adding value to this plant genetic resource.
  
  5.1.1.a.21. L.E. Trujillo Villanueva, F. Legorreta García, I.R. Chávez Urbiola, F.J. Willars Rodríguez, R. Ramírez Bon, M. Ramírez Cardona, Ramírez Bon R., L.E. Hernández Cruz and E. A. Chávez Urbiola. The Effect of Ultraviolet Radiation on the Chemical Bath Deposition of Bis(thiourea) Cadmium Chloride Crystals and the Subsequent CdS Obtention. Journal of Vizualized Experiments : 1-8: 2018. In this work, the effects on the preparation of bis(thiourea) cadmium chloride crystals when illuminated with ultraviolet (UV) light at a wavelength of 367 nm using the chemical bath deposition technique are studied comparatively. Two experiments are performed to make a comparison: one without UV light and the other with the aid of UV light. Both experiments are performed under equal conditions, at a temperature of 343 K and with a pH of 3.2. The precursors used are cadmium chloride (CdCl2) and thiourea [CS(NH2)2], which are dissolved in 50 mL of deionized water with an acidic pH. In this experiment, the interaction of electromagnetic radiation is sought at the moment the chemical reaction is carried out. The results demonstrate the existence of an interaction between the crystals and the UV light; the UV light assistance causes crystal growths in an acicular shape. Also, the final product obtained is cadmium sulfide and shows no evident difference when synthesized with or without the use of UV light..
  
  5.1.1.a.22. M.A Badillo Ávila, Rebeca Castanedo Pérez, Gerardo Torres Delgado, Joaquín Márquez Marin and Orlando Zelaya Ángel. Cu2O thin films obtained from sol-gel cuo films using a simple argon/dry-air microwave plasma. Materials Science in Semiconductor Processing 74: 203-209: 2018. Cu2O thin films were obtained from CuO films using an argon/dry-air plasma treatment (PT) for times less than 30 s. CuO films were dip-coated on glass at a withdrawal speed of 8 cm/min from a sol-gel precursor solution. The as-prepared CuO samples were air-annealed conventionally at different temperatures, from 300 to 550 °C, to fabricate the CuO film-targets. An argon/dry-air PT was later applied to film-targets for 15, 20, 25 and 30 s in a modified microwave oven made with simple components. Cu2O mixed with a low amount of Cu was identified by X-ray diffraction in films treated for 20 s or less. Films only constituted of Cu2O were produced for most of the samples treated for 25 and 30 s. Depending on plasma processing time and CuO film-target annealing temperature, the crystallite size of Cu2O was largely changed (from 6 to 25 nm). Bigger Cu2O crystallite sizes were observed for targets with annealing of 400 °C. SEM studies showed surface morphology to depend on time of PT: grains grew, formed agglomerates and granules with longer exposure. These last caused a decrease in Cu2O film transparency below 800 nm for 30 s of treatment, but not for larger wavelengths nor for shorter times. Band gap value for CuO was 1.20 eV, and around 2.35 eV for Cu2O films below 25 s of plasma-treatment. However, 2.16 eV was calculated for the biggest crystallite size obtained at 30 s. Thickness and resistivity measurements were also performed. A strategic experiment showed that CuO films are reduced to metastable metallic copper with PT. This metallic copper readily oxidizes to Cu2O in open atmosphere. The biggest advantage of this plasma processing lies in the simplicity, short time of treatment and, low cost of the home-made equipment.
  
  5.1.1.a.23. M.A. Badillo Ávila, Rebeca Castanedo Pérez, M.A. Villarreal-Andrade and Gerardo Torres Delgado. Cu2O thin films obtained at low temperature by mono-ethanolamine decomposition in open atmosphere. Materials Science in Semiconductor Processing 85: 168-176: 2018. Cu2O thin films were obtained from CuO films at drying temperatures lower than 290 °C and times shorter than 10 min in open atmosphere. A rapid transformation of CuO films to Cu2O films at 260 °C evidenced the existence of a useful reduction mechanism that was studied. A metal precursor solution was prepared from the mixing of copper acetate and monoethanolamine in isopropanol. Thin films of 5 layers were deposited by the dip-coating method at a withdrawal speed of 6 cm/min. Each layer was dried in a furnace at 230, 260, 275 or 290 °C for 5, 7 or 10 min. X-ray diffraction, reflectance and transmittance in the UV–Vis region and, specular reflectance in the infrared showed that CuO films are obtained at 230 °C. However, Cu2O with good crystallinity and transparency is produced with drying at 260 °C and above, for 10 min and less. Band gaps for CuO and Cu2O films were 1.28 eV and 2.18 eV, respectively. FTIR, resistivity and SEM studies evidenced a reduction mechanism that transforms CuO to Cu2O. The effect is caused by monoethanolamine decomposition into several other reducing compounds, mainly copper carboxylates. Even though some authors have reported similar precursor solutions with monoethanolamine, none have obtained Cu2O in open atmosphere, nor have they explained the organic reaction pathways involved. With the help of other reducing organic compounds, the phenomena can be exploited to produce Cu2O films from CuO ones at milder processing conditions, thus enabling applications for flexible electronics.
  
  5.1.1.a.24. M.D. Durruthy Rodríguez, J.J. Gervacio Arciniega, M. Hernández García and José Martín Yáñez Limón. Photoluminescence characteristics of soft PZT 53/47 ceramic doped at A and/or B sites. Journal of Advanced Ceramics 7(2): 109-116: 2018. This study presents the photoluminescence characteristics of the PZT 53/47 system doped at A and/or B sites, with Nb (PZTN), La (PLZT), and Nb–La (PLZTN) in the concentration range from 0.2 to 1.0 molar fraction. The intensity of the emission bands of the system PZTN is two orders higher than the intensity of the emission bands of the systems PLZT and PLZTN, and these emission bands are located at 1.73 eV (718 nm), 2.56 eV (485 nm), and 2.93 eV (424 nm). The origin of the luminescence in these systems is associated with lead and oxygen vacancies produced during the sintering process. The results from X-ray diffraction (XRD) show a mixture of rhombohedral and tetragonal phases. The system PZTN shows a higher tetragonal phase concentration, while PLZT and PLZTN systems show a higher rhombohedral phase concentration. The cell volume shows an increase with dopant concentration only in the case of the PLZTN system. The band gap energy shows a small variation in the PZTN and PLZTN cases around 3.0 eV, a close value to the band gap energy of the pure PZT 53/47 sample. The system PLZT shows an increasing behavior until 4.41 eV for the higher dopant concentration.
  
  5.1.1.a.25. M.G. Syamala Rao, A. Sánchez Martinez, Gerardo Gutiérrez Heredia, Manuel A. Quevedo and Rafael Ramírez Bon. Sol-gel derived low temperature HfO2-GPTMS hybrid gate dielectric for aIGZO thin-film transistors (TFTs). Ceramics International 44: 16428-16434: 2018. In this study, we prepared inorganic-organic HfO2-GPTMS hybrid films by a simple sol-gel method at low temperature for high-k dielectric gate applications. The hybrid films were deposited by spin coating process, followed by annealing at 150 °C. The hybrid dielectric material was characterized by Spectroscopic ellipsometry (SE), AFM, FESEM, FTIR, TGA, and XPS techniques. The resulting hybrid films exhibit homogeneous and smooth surface with high optical transparency. Their dielectric properties were analysed by measuring leakage current and capacitance versus voltage of metal-insulator-metal (MIM) capacitor structures. From this analysis, the leakage current density at − 5 V, capacitance and dielectric constant at 1 MHz measured on the hybrid films were 10−7 A/cm2 , 51.3 nF/cm2 and of 11.4 respectively. Finally, to investigate the electrical performance of the hybrid thin films as a dielectric gate in thin film transistors (TFTs), bottom-gate TFTs were fabricated by depositing the HfO2-GPTMS dielectric gate layer on ITO-coated glass substrate and subsequently a sputtered aIGZO thin film as the channel layer. The electrical response of the resulting TFTs demonstrated good saturation mobility of 4.74 cm2 V−1 s −1 , very low threshold voltage of 0.3 V and Ion/Ioff current ratio of 104 , with low operating voltage under 8 V..
  
  5.1.1.a.26. M.G. Syamala Rao, M.A. Pacheco Zuñiga, L.A. García Cerda, G. Gutiérrez Heredia, J.A. Torres Ochoa, M.A. Quevedo López and Rafael Ramírez Bon. Low-temperature sol-gel ZrHfO2-PMMA hybrid dielectric thin-films for metal oxide TFTs. Journal of Non-Crystalline Solids 502: 152-158: 2018. In this work, we developed a novel inorganic-organic hybrid gate dielectric by combining zirconium and hafnium components to form zirconium hafnium oxide strongly linked with polymethyl methacrylate (ZrHfO2- PMMA) and deposited at low temperature (200 °C) by sol-gel method. The obtained 108 nm thick, high-quality hybrid gate dielectric showed an exceptionally low surface roughness (0.9-nm), a low leakage current density (7.7 × 10−6 A/cm2 ) and reasonable dielectric properties such as gate capacitance along with dielectric constant (77 nF/cm2.
  
  5.1.1.a.27. NW Peach May, C. Vales Pinzon, A. Vega Flick, A. Oleaga , A. Salazar , J.M. Yanez Limon and JJ Alvarado Gil. Heat transport in epoxy and polyester carbonyl iron microcomposites: The effect of concentration and temperature. Journal Of Composite Materials 52: 1331-1338: 2018. Temperature dependence of the thermal diffusivity in composites of epoxy and polyester resins, loaded with carbonyl iron particles, has been studied using the photopyroelectric technique. Increments of eight and 2.5 times the thermal conductivity of the polymers are obtained, as the volume concentration of microparticles is increased from 0% to 40% for epoxy and from 0% to 20% for polyester matrices, respectively. Additionally, the thermal diffusivity falls systematically as the temperature is increased from 270 to 400 K; the effect is more pronounced for high concentration of microparticles in epoxy composites. The glass transition of the composites is explored by implementing a numerical differentiation algorithm. In order to explain the consequences of the loading of the composites on the thermal conductivity, a modified Lewis-Nielsen model, which includes the presence of crowded regions in the samples, is used to study heat transfer in a wide range of particle concentrations. Keywords.
  
  5.1.1.a.28. O. García Zaldivar, M.C. Rodríguez Aranda, S. Díaz Castañón, F. carderón Piñar, F.J. Flores Ruíz and José Martín Yáñez Limón. Influence of deposition procedure on the properties of multiferroic BiFeO3-based thin films deposited by radio frequency sputtering. Materials Science 124(793): 1-8: 2018. Two samples of Bi1−xBax(Fe1−xTix)O3 with x=0.1 thin films were deposited by RF sputtering method, on commercial indium tin oxide∕glass substrates, using different deposition procedures. The effects of deposition conditions on the structural, magnetic and electrical properties of the thin films are studied. X-ray diffraction, scanning electron microscopy (SEM), dielectric and magnetic characterization techniques were performed at room temperature. The results show that the two samples exhibit rhombohedral perovskite structure without the presence of undesired phases of mixed iron bismuth oxides. The SEM micrographs reveal a huge difference in grain size between the films obtained by the two distinct deposition procedure. The analysis of the reflection and transmission spectra in the UV–vis range allowed us to determine the thickness and roughness of thin films synthesized. Also, from this analysis, the optical band-gap energy increases compared with that obtained for this doped compound in volume and with pure BiFeO3.
  
  5.1.1.a.29. R. Bavand, L. Chen, R. Franca, Alberto Herrera Gómez and Dagoberto Cabrera Germán. Response to the letter: Comment on Intensity modulation of the Shirley background of the Cr 3p spectra with photon energies around the Cr 2p edge. Surface and Interface Analysis 50(7): 686-687: 2018. We appreciate the interest on our paper1 from the authors of the preceding letter. * The essence of our paper, which is to propose a physical basis for the Shirley background is, however, not accurately discussed in the comment. The letter appears to take the stance that it is our view that the Shirley background cannot be used for quantification. This is not the case; indeed, we strongly argue that it must be employed for chemical quantification. It is precisely this argument which is used as one of the observations leading to the proposed hypothesis concerning the physical origin of the Shirley background. The purpose of our paper is to propose a physical basis for the origin of the Shirley signal after showing that energy losses of photoelectrons (direct photoemission) is inconsistent with the experimental total background signal. In a number of publications, Castle and Salvi2-4 refer to the Shirley signal as an intrinsic background and show that it corresponds to a shake‐off of low energy orbitals—for the first row transition elements this correlates with the number of permutations available for the partly filled 3d electrons. In our paper, we show the mechanism by which this shake‐off energy is transferred to the higher‐level electron orbitals, i.e., how the 3p excitation carries the signature of 3d rearrangements. The preceding letter discusses a series of conditions for the applicability of the Shirley background and conclude that those conditions are necessary for a successful use of this background type. We take the position that some of these conditions are extraneous to the applicability of the Shirley method with respect to our research paper..
  
  5.1.1.a.30. Reina Araceli Mauricio Sánchez, Ricardo Salazar , J. Gabriel Luna Bárcenas and Arturo Mendoza Galván. FTIR spectroscopy studies on the spontaneous neutralization of chitosan acetate films by moisture conditioning. Vibrational Spectroscopy 94: 1-6: 2018. The influence of moisture ambiance on the spontaneous neutralization of amorphous chitosan acetate films during storage at 30 C and water activities (aw) in the range of 0.11 to 0.84 is studied by Fourier transform infrared (FTIR) spectroscopy. Three ranges of relative humidity affecting the chitosan acetate films are identified: i) 0.11 aw 0.32, produces dehydration and partial neutralization; ii) aw = 0.44 and 0.55, spontaneous neutralization and rearrangement of OH bonds; iii) 0.64 aw 0.85, prevalence of films in the acetate form and moisture absorption. Acetate content of films as function of water activity and storage time is assessed from the band accounting for the electrostatic interaction of protonated amine groups (–NH3 434343) in chitosan and carboxylate ions (–COO ) of acetic acid. FTIR spectroscopy results are correlated with the equilibrium properties determined from moisture sorption isotherm. The simple method presented may help to produce chitosan acetate films with tuned protonation degree that are relevant in many applications such as biomedical, food, cosmetics, and pharmaceutical.
  
  5.1.1.g. Resúmenes de participación en congresos nacionales e internacionales.
  
  27th Meeting of the ISO/TC 201. Centro de Convenciones del Iberostar Paraíso. 2018-09-22 - 2018-09-26 Playa Paraíso, Quintana Roo:
  
  5.1.1.g.1. Alberto Herrera Gómez. Recommended revisions of ISO TR 18392 Procedures for determining backgrounds in XPS data.
  
  XI International Conference on Surfaces, Materials and Vacuum. 2018-09-24 - 2018-09-28 Centro de Convenciones del Iberostar Paraíso. Playa Paraíso, Quintana Roo, Mexico:
  
  5.1.1.g.2. Dagoberto Cabrera Germán, Orlando Cortazar Martínez, German Vázquez Pérez, Jorge Alejandro Torres Ochoa and Alberto Herrera Gómez. Chemical state assessment of cobalt oxide thin films via quantitative photoelectron spectroscopy.
  
  5.1.1.g.3. Jesús Fernando Fabián Jacobi, Jorge Alejandro Torres Ochoa, Orlando Cortazar Martínez, Joaquin Raboño Borbolla and Alberto Herrera Gómez. Early stages of the oxidation of silver films.
  
  5.1.1.g.4. Joaquin Raboño Borbolla, Jorge Alejandro Torres Ochoa, Orlando Cortazar Martínez, Diego Mulato Gómez and Alberto Herrera Gómez. User-friendly software for the assessment of the structure of multilayered films from ARXPS data. p. 1.
  
  5.1.1.g.5. Jorge Alejandro Torres Ochoa, Orlando Cortazar Martínez, Joaquin Raboño Borbolla, Andrés De Luna Bugallo, Alberto Herrera Gómez and Marisol Mayorga Garay. Effect of substrate polarization on remote-plasma nitridation of TiN/HfO2/Si structures.
  
  5.1.1.g.6. Orlando Cortazar Martínez, Jorge Alejandro Torres Ochoa, Joaquin Raboño Borbolla and Alberto Herrera Gómez. Quantitative ARXPS study of the oxidation of chromium.
  
  16th meeting of the Surface and Micro/Nano Analysis Working Group (SAWG) of the Consultative Committee of the Quantity of Material (CCQM). 2018-04-17 - 2018-04-17 Bureau International des Poids et Mesures; Parc de Saint-Cloud, at Sèvres:
  
  5.1.1.g.7. Alberto Herrera Gómez. Recommended revisions of ISO TR 18392 Procedures for determining backgrounds in XPS data.
  
  5.1.1.g.8. Julio Mata Salazar, Orlando Cortazar Martínez, Diego Mulato Gómez and Alberto Herrera Gómez. Results from CENAM-CINVESTAV (Mexico) of the Pilot Study CCQM-P190 led by KRISS.
  
  4th International Conference on New Trends in Chemistry, 2018-05-11 - 2018-05-13 St Petersburg/Russia:
  
  5.1.1.g.9. E. Prokhorov, A. Gómez Sanchez, J. Gabriel Luna Bárcenas, Yuri Kovalenko and G. Mora García. Effect of chemical treatment on the properties of chitosan multiwall carbon nanotubes.
  
  XXVII International Materials Research Congress 2018-08-19 - 2018-08-24 Cancún, Quintana Roo:
  
  5.1.1.g.10. O. Contreras Muro, Adair Jiménez Nieto, J. A. Tiburcio Moreno, J. Moreno Palmerín, J.M. Juárez García and José Martín Yáñez Limón. Experimental Analysis Of The Deformation Texture In Metal Samples By Electron Backscatter Difraction. Poster modality, in the Texture and Microstructure.
  
  5.1.1.g.11. R. Ramírez Bon. Development of solution-processed, low-temperature hybrid films for dielectric gates applications.
  
  5.1.1.g.12. Juan José Ortíz Estrada, J.M. Yanez Limon, M. Lucero Gómez Herrera, Daladier A. Granada Ramírez and Julio G. Mendoza Alvarez. Size Dependence of the Optical and Thermal Properties of InP Quantum Dots. The synthesis of semiconductor nanocrystals, also known as quantum dots (QD’s), has generated a great interest in recent years due to the unique physical properties of these nanostructured materials, arising from quantum confinement effects. A series of indium phosphide (InP)-based QDs of different sizes were synthesized using the one-pot method without precursor injection by varying the concentration of tris(trimethylsilyl)phosphine [P(TMS)3] and indium myristate [In(MA)x] as well as the reaction time. The optical absorption and emission features shift to higher energies as the QD size decreases. From the UV-Vis absorption spectra, optical properties such as band gap energy can be calculated, obtaining values between 2.0 and 2.87 eV, and a shift in absorption edge can be seen from 230 to 300 nm as the concentration of [P(TMS)3] increases. Photoluminescence spectra present a wide emission band in the visible spectrum region with the maximum peak located between 2.1 to 2.9 eV for the different samples. On the other hand, the thermal diffusivity of InP QDs was measured by using the thermal-wave resonator cavity (TWRC) technique; obtaining thermal diffusivity values in the range from 8.060 x 10-4 to 9.588 x 10-4 cm2s-1. These results show that the thermal diffusivity decreases as the nanoparticle size is smaller. We discuss the effect of the QD size on these optical and thermal properties..
  
  XI Conference on Surfaces, Materials and Vacuum 2018-09-24 - 2018-09-28 Playa del Carmen, Quintana Roo, México:
  
  5.1.1.g.13. Ana K. Jumar , M. G. Syamala Rao and R. Ramírez Bon. Simple and low-cost synthesis of metal oxidepolyvinylpyrrolidone (PVP) polymer nanocomposite for electronic applications.
  
  5.1.1.g.14. C. Montero Tavera, Rivelino Flores Farias, J.M. Yanez Limon and M.D. Durruthy Rodríguez. KNN lead free ferroelectics obtained by high energy milling and sputtering processes.
  
  5.1.1.g.15. Eduardo Alexander Ordaz Fernández, Mónica Balvanera Ortuño López, Jöns Sánchez , Guadalupe Barreiro Rodríguez, Oscar Gómez Guzmán, Eduardo Hernández Gómez, Rafael Ramírez Bon and José Martín Yáñez Limón. Study of better growth conditions for Chemical Bath Deposition of PbS thin films and their effects on optical, structural and electrical characteristics.
  
  5.1.1.g.16. J. de J. Serralta Macías, F. carderón Piñar, O. García Zaldivar and Daniel Olguín. Ferroelectric, Dielectric and Raman scattering studies of BNT system doped with Lanthanum.
  
  5.1.1.g.17. M. G. Syamala Rao, M.A. Quevedo López, R. Ramírez Bon and J. W. Hsu. Mixed Metal Oxide Hybrid Gate Dielectric for High Performance In2Ox Thin-film Transistors by Fully Solution Process at Low Temperature.
  
  5.1.1.g.18. M. G. Syamala Rao, S. Meraz Dávila, J. A. Torres Ochoa, M.A. Quevedo López and Rafael Ramírez Bon. Fully Solution Processed CdS Thin-film Transistors with SiO2-PVP and TiO2-PVP Hybrid Gate Dielectric Layers.
  
  5.1.1.g.19. M.D. Durruthy Rodríguez, Rivelino Flores Farias, Jose de Jesús Serrato Macías and José Martín Yáñez Limón. Photopyroelectric Response in PZT ferroelectric ceramics doped with Niobium.
  
  5.1.1.g.20. Alberto Herrera Gómez. Exploring quantitative modeling of the Shirley background in photoemission spectra.
  
  5.1.1.g.21. Joaquin Raboño Borbolla, Jorge Alejandro Torres Ochoa, Orlando Cortazar Martínez, Diego Mulato Gómez and Alberto Herrera Gómez. User-friendly software for the assessment of the structure of multilayered films from ARXPS data.
  
  5.1.1.g.22. Wendy Belem Hernández Herrera, Oscar Gómez Guzmán, Calos Velasco Santos, Eduardo Enrique Pérez Ramírez, J.M. Yanez Limon and Rivelino Flores Farias. Synthesis of graphene quantum dots (GQDs) and determination of thermal diffusivity of nanofluids containing GQDs.
  
  AVS 65th International Symposium 2018-10-21 - 2018-10-26 Long Beach Convention Center, Long Beach, CA, USA:
  
  5.1.1.g.23. Alberto Herrera Gómez, Diego Fernando Mulato Gómez and Anthony Dutoi. Modeling the Shirley background.
  
  5.1.1.g.24. Dagoberto Cabrera Germán, Orlando Cortazar Martínez, German Vázquez Pérez and Jorge Alejandro Torres Ochoa. Detailed Peak-Fitting Analysis of the Photoemission Spectra of the Early Oxidation Stages of Cobalt Thin Films.
  
  5.1.1.g.25. Diego Fernando Mulato Gómez, Jorge Alejandro Torres Ochoa, Dagoberto Cabrera Germán and Alberto Herrera Gómez. Calculation of Multiplet Structure in a Mixture of Copper Oxides.
  
  IV Simposio Nacional en Ingeniería de Superficies y Tribología 2018-10-31 - 2018-11-03 Mazatlán, Sinaloa:
  
  5.1.1.g.26. José Martín Yáñez Limón, Rafael Ramírez Bon y Joel Moreno Palmerin. Laboratorio Nacional de Investigación y Desarrollo Tecnológico de Recubrimientos Avanzados, LIDTRA.
  
  39 Congreso Internacional de Metalurgia y Materiales 2018-11-07 - 2018-11-09 Saltillo, Coah, México:
  
  5.1.1.g.27. R. Ramírez Bon. Síntesis y Aplicaciones de Recubrimientos Híbridos Orgánico-Inorgánicos.
  
  Pacific Rim Symposium on Surfaces, Coatings 2018-12-02 - 2018-12-06 Waikoloa Beach Marriott Resort:
  
  5.1.1.g.28. Jorge Alejandro Torres Ochoa, Orlando Cortazar Martínez, Marisol Mayorga Garay, Andrés De Luna Bugallo, Yuri Lizbeth Chipatecua Godoy, Oscar Ceballos Sánchez, Joaquin Raboño Borbolla, Alberto Herrera Gómez, D. Silva Cabrales and F. Corona Dávila. Low temperature nitridation of hafnia with low density of N-O bonds.
  
  5.1.3. Capítulos de investigación original en extenso en libros especializados, publicados por una casa editorial.
  
  5.1.3.1. Cesar Amaya, John Jairo Prıas Barragan, Julio Cesar Caicedo, J.M. Yanez Limon and Gustavo Zambrano. Impact of the Glancing Angle Deposition on the Yttria-Stabilized Zirconia Growth and Their Thermal Barrier Coating Properties. Coatings and Thin-Film Technologies : 1-23: 2018. ISBN 978-1-78984-871-7. intechopen. Yttria-stabilized zirconia (YSZ) is the most common material used as a thermal barrier in several engineering applications. The majority of films produced by physical vapor deposition (PVD) techniques use normal incidence and lead to the columnar growth normal to the substrate. The typical columnar structure of sputter-deposited films is largely influenced, among other parameters, by pressure, temperature, thickness, and the ion-to-atom ratio incident at the substrate or substrate bias voltage. Another important experimental parameter used to modify the film properties is the direction of the incident flux of the depositing species with respect to the substrate surface. In this chapter an oblique angle deposition (OAD) approach was used to grow YSZ with tilted columnar structures, to study the impact of this deposition technique on the microstructure, morphology, and, correspondingly, the thermal conductivity of YSZ films, in order to improve the insulator potential of these thin films. Additionally, in the chapter, we present a detailed description of the oblique angle deposition (OAD) technique and double-layer model used for determination of the effective thermal conductivity of YSZ samples grown over thick substrates..
  
  6. ESTUDIANTES GRADUADOS
  6.1. MAESTRÍA.
  
  6.1.1 MAYORGA GARAY Marisol. "Efecto de la polarización en el proceso de nitruración del óxido de hafnio y su impacto en las propiedades eléctricas en estructuras MOS tipo TiN/HfOxNy/Si." MATERIALES. Director(es) de tesis: HERRERA GÓMEZ Alberto, DE LUNA BUGALLO Andrés. 2018-08-30. .
  
  6.2. DOCTORADO.
  
  6.2.1 GUZMAN CABALLERO David Ezequiel. "Estudio y desarrollo de películas delgadas de SnO tipo p depositadas por Sputtering y su aplicación en TFTs." MATERIALES. Director(es) de tesis: Ramírez Bon Rafael, Quevedo López Manuel Angel. 2018-05-18. .
  
  6.2.2 ESCAMILLA DIAZ Tonatiuh. "Síntesis y estudio de películas ferroeléctricas PVDF y compuestas polímero-cerámico (PMMA-PZT, BZT y BNT)." MATERIALES. Director(es) de tesis: Yáñez Limón José Martín, García Zaldívar Osmany. 2018-05-18. .
  
  6.2..3 CRUZ VALERIANO Edgar. "Caracterización de películas y recubrimientos utilizando métodos dinámicos en AFM." MATERIALES. Director(es) de tesis: Yáñez Limón José Martín, Moreno Palmerín Joel. 2018-11-16. .
  
  6.3. ESTUDIANTES EXTERNOS.
  Maestría
  
  6.3.1. MENDOZA MENDOZA Ingrid Marcela. "Síntesis y caracterización de recubrimientos de TiN y CN depositado sobre sustratos de acero obtenidos mediante Magnetron Sputtering.." MATERIALES.
  Director(es) de tesis: Dr. Oscar Gomez Guzman y Dr. José Martín Yañez Limon..
  2018-05-04. Instituto Tecnológico de Querétaro.
  
  6.3.2. Esaú Moisés Aguillón Rojas. Síntesis Y Caracterización Mecánico Estructural De Recubrimientos Duros De Tial/Tialn Depositados Sobre Acero Obtenidos Mediante Magnetrón Sputtering
  Director(es) de tesis: Dr. Oscar Gomez Guzman y Dr. Rafael Ramírez Bon.
  2018-02-06. Instituto Tecnológico de Querétaro..
  
  7. PREMIOS Y DISTINCIONES.
  
  7.3.1 ALBERTO HERRERA GÓMEZ.
  Reconocimiento como Program Chair PacSurf. Reconocimiento como anfitrión de la 27th Meeting of the ISO/TC 201. Centro de Convenciones del Iberostar Paraíso. Playa Paraíso, Quintana Roo. 22-26 de septiembre, 2018. “ISO/TC 201 expresses its great appreciation to Prof. Alberto Herrera Gómez for hosting and organizing the ISO/TC 201 meeting in Riviera Maya, Mexico”.
  
  7.3.2 J. GABRIEL LUNA BÁRCENAS.
  Participacion en el evento "Casos de exito y Repensando la Evaluacion Cientifica" 20-21 de noviembre de 2018.
  
  7.3.3 RAFAEL RAMÍREZ BON.
  Miembro de la Junta Universitaria de la Universidad de Sonora.
  
  8. PARTICIPACIÓN EN COMISIONES DE EVALUACIÓN, COMITÉS TÉCNICOS Y COMITÉS EDITORIALES DE REVISTAS.
  
  8.12.1 RAFAEL RAMÍREZ BON.
  Revisor de artículos en: ACS Applied Materials
  
  8.12.2 JOSÉ MARTÍN YÁÑEZ LIMÓN.
  Evaluador de proyectos del Fondo Institucional de cooperación bilateral, Ciencia Basica, Infraestructura, programas de posgrado PNPC, de conacyt. Revisor de artículos en las revistas: International Journal of thermophysics, Journal of noncrystalline of solids, ACS Applied Materials
  
  9. PROYECTOS FINANCIADOS POR AGENCIAS NACIONALES O INTERNACIONALES DE APOYO A LA CIENCIA (CONACYT, COSNET, FUNDACIÓN ROCKEFELLER, ETC.)
  
  Proyecto: Estudio de materiales ferroelectricos tipo PZT, BNT, KNN y compositos ferroelectrico-PMMA.
  Clave: 240460
  Vigencia: 2015-04-24 a 2018-04-24
  Responsable: Dr. José Martín Yáñez Limón
  Participantes: Dr. Rafael Ramírez, Dra. Ma. Dolores Durruthy Rodriguez, Dra. Carmen Rodriguez Aranda, Dr. Oscar Gomez Guzman, Dra. Guadalupe Barreiro Rodríguez. Dr. Rodrigo Mayen Mondragon, Manuel Quevedo Lopez
  Fuente de financiamiento: Conacyt
  Monto: 1,601,958.00
  
  Proyecto: CONTRATO (RECURSOS PROPIOS). Estudio de calcogenuros metálicos como canal semiconductor en transistores de efecto de campo .
  Clave: CB-2014-01-242549
  Vigencia: 2016-04-18 a 2018-04-16
  Responsable: Dr. Rafael Ramírez Bon
  Participantes:
  Fuente de financiamiento: CONACYT
  Monto: 1235
  
  Proyecto: Nitridation of high-k dielectric nanofilms as a barrier to indium and gallium diffusion in InGaAs-based MOS devices
  Clave: .
  Vigencia: 2017-07-03 a 2019-08-05
  Responsable: Dr. Alberto Herrera Gómez
  Participantes: Andrés de Luna Bugallo
  Fuente de financiamiento: CONACYT-CONTEX
  Monto: 1,115,625
  
  Proyecto: Laboratorio Nacional de Investigación y Desarrollo tecnológico de Recubrimientos Avanzados, consolidación
  Clave: 295261
  Vigencia: 2018-07-02 a 2020-07-20
  Responsable: Dr. José Martín Yáñez Limón
  Participantes: Dr. Rafael Ramírez, Dr. Alberto Herrera- Gomez, Dr. Gabriel Luna Barcenas. Dr. Yurii Vorovieb, Dr. Joel Moreno Palmerin.
  Fuente de financiamiento: CONACYT
  Monto: $ 2´100,000.00
  
  Proyecto: Desarrollo de celdas solares con materiales ferroeléctricos. Proyecto Prodep-SEP 2018.
  Clave: PRODEP
  Vigencia: 2018-11-13 a 2019-11-19
  Responsable: Dr. Rafael Ramírez Bon
  Participantes:
  Fuente de financiamiento: SEP-CINVESTAV
  Monto: $ 80,000.00
  
  Proyecto: Desarrollo de Nanoalambres Magnéticos para aplicaciones en detección de nanopartículas
  Clave: S/N
  Vigencia: 2018-12-10 a 2020-12-09
  Responsable: Dr. J. Gabriel Luna Bárcenas
  Participantes:
  Fuente de financiamiento: US Army Research Lab, EEUU
  Monto: $ 140,0000.00 USD
  
  10. PROYECTOS Y SERVICIOS SOLICITADOS POR EL SECTOR INDUSTRIAL, EL DE SERVICIOS Y OTROS SECTORES, DESARROLLADOS EN EL MARCO DE UN CONTRATO (RECURSOS PROPIOS)
  
  Proyecto: Caracterizacion y Analisis de Materiales Magnetocaloricos
  Vigencia: 2017-08-08 a 2017-08-10
  Responsable: Dr. José Martín Yáñez Limón
  Participantes: Dr. José Manuel Juarez García, Ing. Eleazar Urbina Alvarez, M. en C. Adair
  Empresa/dependencia solicitante: CIMAV Chihuahua
  Tipo de proyecto: Asesoría

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