Wilfredo Otaño, Ph.D.

Título/Appointment: Conjunct Professor
Departamento/Department: Physics Department
Institución/Institution: UPR-Cayey
E-mail: wilfredo.otaño@upr.edu
Teléfono/Phone: (787) 420-7827

Reseña/Biosketch:
Wilfredo Otaño obtained his PhD in Materials Sciences and Engineering at Penn State University. He currently is an Adjunct Professor at the University of Puerto Rico on the campus of Cayey and Mayagüez. His current research interest is in thin film coatings deposited by magnetron sputtering, ultra-sensitive sensor devices for the detection of noxious gases, and the synthesis of metal nanoparticles for applications in electronics, energy, catalysis, sensors, and optics.

Preparación Académica/Education:

Ph.D. in Materials Sciences and Engineering from Penn State University.

M.S. and B.S. in Physics from UPR Río Piedras.

Áreas de Investigación/Research Interests:

  • Thin film coatings deposited by magnetron sputtering.
  • Ultra-sensitive sensor devices for the detection of noxious gases.
  • Synthesis of metal nanoparticles for applications in electronics, energy, catalysis, sensors, and optics.

Publicaciones/Publications:

  1. Cristina M. Vargas Ortiz, University of Puerto Rico at Mayaguez, PR. MS, Materials Science and Engineering, May 2023. Dissertation: “Environmental Nanotechnology: Building of Sensor Devices for the Detection of Hazardous Gases at Low Concentrations.” Advisor: Professor Wilfredo Otaño.
  2. Otaño and A. A. Camacho-Berríos, provisional patent, Ultra-sensitive tin oxide sensor for room temperature detection of oxidizing and reducing gases”, January 2023.
  3. Adrián Camacho- Berríos, University of Puerto Rico, Rio Piedras, PR. PhD, Chemical Physics, May 2020 Dissertation: “Zinc oxide grown by reactive magnetron sputtering: magnetic properties and hydrogen gas sensing response.” Advisor: Professor Wilfredo Otaño.
  4. Adrián A. Camacho-Berrios, Víctor M. Pantojas and Wilfredo Otaño, Reactive sputtered ZnO thin films: Influence of the O2/Ar flow ratio on the oxygen vacancies and paramagnetic active sites, Thin Solid Films 692, 137641 (2019).
  5. Camacho-Berrios, A. A., V. Pantojas, and W. Otaño. “Influence of growth conditions on the physical properties of Mn doped ZnO thin films grown by reactive magnetron sputtering.” MRS Online Proceedings Library Archive 1805 (2015).
  6. Gary W. Hunter, Jennifer C. Xu, Laura J. Evans, Luis F. Fonseca, Ram Katiyar, María M. Martínez-Iñesta, Wilfredo Otaño, Neeraj Panwar, and Randy L. Vander Wal, Advanced Sensor Nanomaterials for Aerospace Applications, in Advanced Nanomaterials for Aerospace Applications, Carlos R. Cabrera and Felix A. Miranda (Eds.), Pan Stanford Publishing, Chapter 1, pages 1-38, (2014).
  7. Dachi Yang, Luis Valentín, Jennifer Carpena, Wilfredo Otaño, Oscar Resto,and Luis F. Fonseca, Temperature-Activated Reverse Sensing Behavior of Pd Nanowire Hydrogen Sensors, Small, 9 (2), 188 (2012).
  8. Lisandra Arroyo-Ramírez, Diego Rodríguez, Wilfredo Otaño, and Carlos R. Cabrera, Palladium Nanoshell Catalysts Synthesis on Highly Ordered Pyrolytic Graphite for Oxygen Reduction Reaction, ACS Appl. Mater. Interfaces, 4 (4), 2018 (2012).
  9. Melvin Arias, Víctor M. Pantojas, Oscar Perales, Wilfredo Otaño; Synthesis and characterization of magnetic diphase ZnFe2O4 /γ-Fe2O3 electrospun fibers, Journal of Magnetism and Magnetic Materials, 323, 2109 (2011).
  10. Víctor M. Pantojas, Diego Rodríguez-Vindas, Gerardo Morell, Adamari Rivera, Carlos Ortiz, Jorge J. Santiago-Aviles, and Wilfredo Otaño, Synthesis of palladium with different nanoscale structures by sputtering deposition onto fiber templates, J. Nanophoton. Vol. 2, 021920 (2008).
  11. Wilfredo Otaño, Ariel Otero, José M. Otaño, Carlo S. Otaño, Jorge J. Santiago and Víctor M. Pantojas, Formation of palladium structures combining electrospinning and dc sputtering, in Structure, Processing and Properties of Polymer Nanofibers for Emerging Technologies, edited by K. Kiick and T. Long (Mater. Res. Soc. Symp. Proc. Volume 948E, Warrendale, PA, 2007) paper # 0948-B05-
  12. Víctor M. Pantojas, Otaño-Rivera and José N. Caraballo, Statistical análisis of the effect of deposition parameters on the preferred orientation of sputtered AlN thin films, Thin Solid Films 492, 118 (2005).
  13. Otaño-Rivera, L. J. Pilione, R. F. Messier, J. Santiago and G. Lamaze, Effect of Al additions and AlN interlayers in the stabilization and adhesion of cBN thin films, Diamond and Related Materials 13 (9), 1690 (2004).
  14. Russel F. Messier, Thomas Gehrke, Craig Frankel, V.C. Venugopal, Wilfredo Otaño and Aklesh Lakhtakia, Engineered sculptured nematic thin films, Vac. Sci. Technol. A 15(4), 2148 (1997).