Dr. Jose Edgar Alfonso Orjuela
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Dr. Jose Edgar Alfonso Orjuela

Associate Professor
Universidad Nacional de Colombia, Colombia

Highest Degree
Ph.D. in Physics from Universidad Autonoma de Madrid, Spain

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Area of Interest:

Physics
100%
Optical Characterization
62%
Chemical Composition
90%
Sputtering Technique
75%
Laser-Materials
55%

Research Publications in Numbers

Books
0
Chapters
0
Articles
47
Abstracts
0

Selected Publications

  1. Orozco-Hernandez, G., L.M. Lopez-Cordoba, H.A. Esquivel-Puentes, J.J. Olayal, J.E. Alfonso and C.A. Pineda-Vargas, 2017. Characterization of bismuth oxide thin films deposited via unbalanced magnetron sputtering. Rev. Latin Am. Metal. Mat., 37: 186-194.
  2. Orozco-Hernandez, G., J.J. Olaya, J.E. Alfonso, C.A. Pineda-Vargas and C. Mtshali, 2017. Optical response of bismuth based thin films synthesized via unbalanced magnetron DC sputtering technique. Thin Solid Films, 628: 170-175.
    CrossRef  |  Direct Link  |  
  3. Jimenez, H., J.J. Olaya, J.E. Alfonso, C.B. Mtshali and C.A. Pineda-Vargas, 2017. Corrosion resistance of Ni-based WC/Co coatings deposited by spray and fuse process varying the oxygen flow. J. Thermal Spray Technol., 26: 1708-1719.
    CrossRef  |  
  4. Jimenez, H., J.J. Olaya, J.E. Alfonso and C.A. Pineda-Vargas, 2017. Corrosion resistance of Ni-based coatings deposited by spray and fuse technique varying oxygen flow. Surface Coatings Technol., 321: 341-349.
    CrossRef  |  Direct Link  |  
  5. Cubillos, G.I., M.E. Mendoza, J.E. Alfonso, G. Blanco and M. Bethencourt, 2017. Chemical composition and microstructure of zirconium oxynitride thin layers from the surface to the substrate-coating interface. Mater. Characteriz., 131: 450-458.
    CrossRef  |  Direct Link  |  
  6. Cubillos, G.I., E. Romero and J.E. Alfonso, 2016. Influence of corrosion on the morphology and structure of ZrOxNy-ZrN coatings deposited on stainless steel. Mater. Chem. Phys., 176: 167-178.
    CrossRef  |  Direct Link  |  
  7. Parra, J., O. Piamba, J. Olaya and J.E. Alfonso, 2015. Tribological properties of BixTiyOz films grown via RF sputtering on 316L steel substrates. Dyna, 82: 227-230.
    CrossRef  |  Direct Link  |  
  8. Orjuela-Guerrero, F.A., J.E. Alfonso-Orjuela and J.J. Olaya-Florez, 2015. Effect of V addition on the hardness, adherence and friction coefficient of VC coatings produced by thermo-reactive diffusion deposition. Dyna, 82: 178-184.
    CrossRef  |  Direct Link  |  
  9. Castillejo-Nieto, F.E., J.J. Olaya-Florez and J.E. Alfonso, 2015. Wear resistance of vanadium-niobium carbide layers grown via TRD. Dyna, 82: 104-109.
    CrossRef  |  Direct Link  |  
  10. Bedoya-Hincapie, C.M., J. de la Roche, E. Restrepo-Parra, J.E. Alfonso and J.J. Olaya-Florez, 2015. Structural and morphological behavior of bismuth thin films grown through DC-magnetron sputtering. Ingeniare Rev. Chilena Ingenieria, 23: 92-97.
    Direct Link  |  
  11. Bedoya-Hincapie, C.M., H.H. Ortiz-Alvarez, E. Restrepo-Parra, J.J. Olaya-Florez and J.E. Alfonso, 2015. Hysteresis loop behaviors of ferroelectric thin films: A Monte Carlo simulation study. Chin. Phys. B, Vol. 24. .
    Direct Link  |  
  12. Cubillos, G.I., M. Bethencourt, J.J. Olaya, J.E. Alfonso and J.F. Marco, 2014. The influence of deposition temperature on microstructure and corrosion resistance of ZrOxNy/ZrO2 coatings deposited using RF sputtering. Applied Surf. Sci., 309: 181-187.
    CrossRef  |  Direct Link  |  
  13. Castillejo, F.E., D.M. Marulanda, J.J. Olaya and J.E. Alfonso, 2014. Wear and corrosion resistance of niobium-chromium carbide coatings on AISI D2 produced through TRD. Surf. Coatings Technol., 254: 104-111.
    CrossRef  |  Direct Link  |  
  14. Alfonso, J.E., J.J. Olaya, C.M. Bedoya-Hincapie, J. Toudert and R. Serna, 2014. Annealing effect on the structural and optical properties of sputter-grown bismuth titanium oxide thin films. Materials, 7: 3427-3434.
    CrossRef  |  Direct Link  |  
  15. Pinzon, M.J., J.E. Alfonso and J.J. Olaya, 2013. Influence of the parameters of fabrication on the optical properties of Bi1.7Ti2O6.624 thin films. Thin Solid Films, 549: 8-11.
    CrossRef  |  Direct Link  |  
  16. Ortiz, M.F., J.J. Olaya and J.E. Alfonso, 2013. Bismuth coatings deposited by the pulsed dc sputtering technique. Revista Mexicana De Fisica, 59: 374-379.
    Direct Link  |  
  17. Cubillos, G.I., J.J. Olaya, D. Clavijo, J.E. Alfonso and C. Cardozo, 2013. Synthesis and biological characterization of zirconium oxynitride thin film growth by radio-frequency sputtering. Thin Solid Films, 529: 342-346.
    CrossRef  |  Direct Link  |  
  18. Alfonso, J.E., M. Cardenas and J.F. Marco, 2013. Influence of fabrication parameters on crystallization, microstructure, surface composition and optical behavior of MgO thin films deposited by RF magnetron sputtering. J. Superconductivity Novel Magne., 26: 2463-2466.
    CrossRef  |  Direct Link  |  
  19. Alfonso, J.E., J.J. Olaya, M.J. Pinzon and J.F. Marco, 2013. Potentiodynamic polarization studies and surface chemical composition of bismuth titanate (BixTiyOz) films produced through radiofrequency magnetron sputtering. Materials, 6: 4441-4449.
    CrossRef  |  Direct Link  |  
  20. Cubillos, G.I., J.J. Olaya, D. Clavijo, J.E. Alfonso and M. Bethencourt, 2012. Corrosion resistance and biocompatibility of zirconium oxynitride thin film growth by rf sputtering. Revista Mexicana Fisica, 58: 328-334.
    Direct Link  |  
  21. Bedoya-Hincapie, C.M., E. Restrepo-Parra, J.R. Rojas, J.J. Olaya-Flores and J.E. Alfonso, 2012. Monte Carlo simulation of ferroelectric properties in bismuth titanate (Bi4Ti3O12) thin films. Comput. Mater. Sci., 62: 131-135.
    CrossRef  |  Direct Link  |  
  22. Alfonso, J.E., R. Garzon and L.C. Moreno, 2012. Behavior of the thermal expansion coefficient of α-MoO3 as a function of the concentration of the Nd3+ ion. Phys. B: Condensed Matter, 407: 4001-4004.
    CrossRef  |  
  23. Alfonso, J.E., J. Torres, L.C. Moreno, J. Munevar, E. Baggio-Saitovich and J. Roa-Rojas, 2012. Preparation and magnetic behavior of molybdenum oxide and neodymium thin films grown by spray pyrolysis technique. Revista Mexicana Fisica, 58: 253-257.
  24. Alfonso-Orjuela, J.E., D.F. Andrade-Zambrano and J.M. Arroyo-Osorio, 2011. Refractive index of multiline nanosecond laser-induced periodic surface structures and porous silicon. Revista Mexicana Fisica, 57: 475-480.
    Direct Link  |  
  25. Alfonso, J.E., J. Buitrago, J. Torres, J.F. Marco and B. Santos, 2010. Influence of fabrication parameters on crystallization, microstructure, and surface composition of NbN thin films deposited by rf magnetron sputtering. J. Mater. Sci., 45: 5528-5533.
    Direct Link  |  
  26. Zuluaga, M., A. Pardo, J. Torres and J.E. Alfonso, 2008. Influence of the laser power on the optical properties of MoO3 thin films prepared by CO2 laser evaporation. Microelectronics J., 39: 1264-1265.
    CrossRef  |  Direct Link  |  
  27. Torres, J., H.M. Martinez and J.E. Alfonso, 2008. Optoelectronic study in porous silicon thin films. Microelectronics J., 39: 482-484.
    CrossRef  |  Direct Link  |  
  28. Martinez, H.M., N.E. Rincon, J. Torres and J.E. Alfonso, 2008. Porous silicon thin film as CO sensor. Microelectronics J., 39: 1354-1355.
    CrossRef  |  Direct Link  |  
  29. Garzon, C.M., J.E. Alfonso, E.C. Corredor, A.A. Recco and A.P. Tschiptschin, 2008. Hardness and structure characterization of Ti6Al4V films produced by reactive magnetron sputtering on a conventional austenitic stainless steel. Microelectronics J., 39: 1329-1330.
    CrossRef  |  Direct Link  |  
  30. Alfonso, J.E., J. Buitrago, J. Torres, B. Santos and J.F. Marco, 2008. Crystallographic structure and surface composition of NbNx thin films grown by RF magnetron sputtering. Microelectronics J., 39: 1327-1328.
    CrossRef  |  Direct Link  |  
  31. Lopez‐Carreno, L.D., A. Pardo, M. Zuluaga, O.L. Cortes‐Bracho, J. Torres and J.E. Alfonso, 2007. Electrical transport properties of MoO3 thin films prepared by laser assisted evaporation. Phys. Status Solidi, 4: 4064-4069.
    CrossRef  |  
  32. Diaz, D., A.P. Pardo, J. Torres, J.E. Alfonso and L.C. Moreno, 2007. Incorporation of Li in MoO3 thin films grown by evaporation with a CO2 laser. Phys. Status Solidi, 4: 4165-4169.
    CrossRef  |  Direct Link  |  
  33. Torres, J., F. Castillejo and J.E. Alfonso, 2006. Influence of the current density and resistivity on the optical properties of p-type porous silicon thin films fabricated by the electrochemical anodizing method. Braz. J. Phys., 36: 1021-1024.
    Direct Link  |  
  34. Mayorga, P.A., D.A. Tellez, Q. Madueno, J.E. Alfonso and J. Roa-Rojas, 2006. Conductivity fluctuation of YBa2Cu3O7-δ/Sr2YSbO6/SrTiO3 thin films. Braz. J. Phys., 36: 1084-1087.
    Direct Link  |  
  35. Alfonso, J.E., J. Torres and J.F. Marco, 2006. Influence of the substrate bias voltage on the crystallographic structure and surface composition of Ti6A14V thin films deposited by rf magnetron sputtering. Braz. J. Phys., 36: 994-996.
    CrossRef  |  Direct Link  |  
  36. Torres, J., J.E. Alfonso and L.D. Lopez‐Carreno, 2005. XPS and X‐ray diffraction characterization of MoO3 thin films prepared by laser evaporation. Phys. Status Solidi, 2: 3726-3729.
    CrossRef  |  Direct Link  |  
  37. Cardenas, R., J. Torres and J.E. Alfonso, 2005. Optical characterization of MoOM3 thin films produced by continuous wave CO2 laser-assisted evaporation. Thin Solid Films, 478: 146-151.
    CrossRef  |  Direct Link  |  
  38. Alfonso, J.E., F. Pacheco, P. Castro and J. Torres, 2005. Influence of the substrate bias voltage on the crystallographic structure and mechanical properties of Ti6Al4V coatings deposited by rf magnetron. Phys. Status Solidi, 2: 3786-3789.
    CrossRef  |  Direct Link  |  
  39. Alfonso, J.E., F. Pacheco, P. Castro and J. Torres, 2005. Influence of power on the structure and mechanical properties of TiN coatings deposited by rf magnetron. Phys. Status Solidi, 2: 3782-3785.
    CrossRef  |  Direct Link  |  
  40. Alfonso, J.E., F. Pacheco, P. Castro and G. Arenas, 2005. Micro hardness study of the TiN thin films grown by rf magnetron on 420 steel, nitrurated by plasma. Phys. Status Solidi, 2: 3790-3793.
    CrossRef  |  Direct Link  |  
  41. Munera, H.A., E. Alfonso and G. Arenas, 2003. Preliminary observations with a stationary Michelson-Morley interferometer close to the equator. J. New Energy, 7: 101-105.
  42. Munera, H.A., E. Alfonso and G. Arenas, 2002. Empirical verification of the existence of large fringe-shifts in the original Michelson-Morley and Miller experiments and a novel interpretation of its origin. J. New Energy, 7: 185-209.
  43. Alfonso, J.E., M.J. Martin, V. Volkov, C. Zaldo, M. Aguilo, M.F. da Silva and J.C. Soares, 1999. Photoconductive Bi12MO20-type films prepared by pulsed laser deposition. J. Mater. Res., 14: 4409-4417.
    CrossRef  |  
  44. Martin, M.J., J.E. Alfonso, J. Mendiola, C. Zaldo, D.S. Gill, R.W. Eason and P.J. Chandler, 1997. Pulsed laser deposition of KNbO3 thin films. J. Mater. Res., 12: 2699-2706.
    CrossRef  |  
  45. Alfonso, J.E., M.J. Martın and C. Zaldo, 1997. Photoluminescence of Nd-doped LiNbO3 films prepared by pulsed laser deposition. Applied Phys. Lett., 71: 2904-2906.
    CrossRef  |  
  46. Alfonso, J.E., M.J. Martin, J. Mendiola, K. Polgar and C. Zaldo, 1996. Pulsed laser deposition of sillenite films intended for photorefractive damage free waveguides. Applied Surf. Sci., 96: 791-794.
    CrossRef  |  
  47. Alfonso, J.E., M.J. Martin, J. Mendiola, A. Ruiz, C. Zaldo, M.F. da Silva and J.C. Soares, 1996. Bi12 (GaxBi1-x1) O119.51 optical waveguides grown by pulsed laser deposition. J. Applied Phys., 79: 8210-8215.
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