Professor of Physics

B.S., M.S., Ph.D., University of the Philippines, 1985, 1999, 2007

Research Interests:

Semiconductors, Semiconductor Devices, High temperature materials processing, UHV processes, Optics

Research Projects:

•  Project Staff L3:  Research Project entitled “Synthesis of Carbon Nanotubes (CNT) – Silicon Heterojunction for the Fabrication and Assembly of a Solar Panel,” funded by PCIEERD-GIA.  Collaborators: Dr. Chelo S. Pascua ( Department of Materials Science and Engineering, Mariano Marcos State University, Batac, Ilocos Norte). Approved December 2012. Project Duration: January 2013 – December 2014.
• Co-Proponent and Project Staff L3: Research Project entitled “Optically Transparent Spinel/Mullite – Based Ceramics from Natural Kaolinite Nanoparticles,” funded by DOST-GIA. Collaborators: Dr. Chelo S. Pascua (Project Leader, Department of Materials Science and Engineering, Mariano Marcos State University, Batac, Ilocos Norte), Dr. Armando Somintac (Co-proponent, National Institute of Physics, University of the Philippines, Diliman, Quezon City), and Engr. Rodrigo Dejeto (Co-proponent, Department of Materials Science and Engineering, Mariano Marcos State University, Batac, Ilocos Norte). Approved May 2012. Project Duration: June 2012 – May 2013.

ISI Publications:

•  E. Estacio, C. Alonzo, A. Garcia, A. Somintac and A. Salvador, Time-response characteristics of an Oxide-confined GaAs Resonant-Cavity-enhanced Photodetector, Appl. Phys. Lett. 85 3011, 2004.
• C.M.N. Mateo, A. Garcia, F.R. Ramos, and A. Salvador, Strain-induced Splitting of the Valence Band in Epitaxially Lifted-off GaAs Films, J.Appl. Phys. 101, 073519, 2007.
• A. Garcia, C. M. Mateo, M. Defensor, H.H. Kim, C. Boothroyd, E. Philpott and A. Salvador, Influence of As4 Flux on Growth Kinetics, Structure and Optical Properties of InAs/GaAs Quantum Dots, J.Appl. Phys 102, 073526, 2007.
• M.F. Casco, J. Misa, A. Garcia, and A. Salvador , Surface Structure- Dependent Growth of InAs/InAlAs Quantum Wires on InP(100), Semiconductor Photonics: Nano-Structured Materials and Devices, Chua S.J., Teng J.H., Wada O., De La Rue R., and Tang X.H. (eds), Trans Tech Publications LTD., UK 2008.
• Elmer Estacio, Nobuhiko Sarukura, Carlito Ponseca, Jr., Armando Somintac, Michelle Bailon-Somintac, Alipio Garcia, and Arnel Salvador, Transverse Magnetic Field Polarity Effects on the Terahertz Radiation in GaAs/AlGaAs Modulation-Doped Heterostructures with Varying AlGaAs Spacer Layer Thickness, J.Appl. Phys 104 (1) 2008.
• Elmer Estacio, Minh Hong Pham, Satoru Takatori, Marilou Cadatal-Raduban, Tomoharu Nakazato, Toshihiko Shimizu, Nobuhiko Sarukura, Armando Somintac, Michael Defensor, Fritz Christian B. Awitan, Rafael B. Jaculbia, Arnel Salvador, and Alipio Garcia, Strong Enhancement of Terahertz Emission from GaAs in InAs/GaAs Quantum Dot Structures, Appl. Phys. Lett. 94, 232104 2009.
• S.Takatori, Pham Hong Minh, E. Estacio, M. Cadatal-Raduban, T. Nakazato, T. Shimizu, M. Bailon-Somintac, A. Somintac, M. Defensor, J. Gabayno, F. C. B. Awitan, R. B. Jaculbia, A. Garcia, C. Ponseca Jr., Arnel Salvador and Nobuhiko Sarukura. Investigation of the terahertz emission characteristics of MBE-grown GaAs-based nanostructures. Optical Materials, Volume 32, Issue 7, 2010, 776-779.
• J. Afalla, M.H. Balgos, A. Garcia, J.J. Ibanes, A. Salvador, A. Somintac (2013) Observation of picosecond carrier lifetimes in GaAs/AlGaAs single quantum wells grown at 630 C. Journal of Luminescence, 143, 538-541.

International Publications in Proceedings:

• A. Garcia, F.R. Ramos, H.H. Kim, C. Boothroyd, E. Philpott and A. Salvador, Tailoring the Emission Characteristics of InAs Quantum Dots by Varying the Arsenic Pressure, 1st IWOFM-3rd IWONN Conference Halong City, Vietnam (2006)
• M.F. Casco, J. Misa, A. Garcia, and A. Salvador, Surface Structure-Dependent Growth of InAs/InAlAs Quantum Wires on InP(100), International Conference on Materials for Advanced Technologies (ICMAT 2007), Singapore, July 2007.
• A. Garcia, J. Misa, M.F. Casco, and A. Salvador, Control of the Surface Morphology of MBE_Grown InAlAs and InGaAs Layers on InP via Manipulation of In Content, International Conference on Materials for Advanced Technologies (ICMAT 2007), Singapore, July 2007.

Local Publications in Proceedings:

• E. Estacio, C. Alonzo, A. Garcia, A. Somintac and A. Salvador, Time-responsecharacteristics of GaAs/AlGaAs modulation-doped schottky photodetector, Proceedings of the 22nd Samahang Pisika ng Pilipinas Congress Bohol, Philippines , October2004.
• M.J. Llena, A. Garcia, A. Somintac and A. Salvador, Oxidation Barrier to Vertical Cavity Surface Emitting Laser (VCSEL) Structures, Proceedings of the 23rd Samahang Pisika ng Pilipinas Congress Iloilo City, Philippines, October 2005.
• J. A. Constantino, M. Defensor, A. Garcia, R. Sotto, and A. Salvador, Reactive Ion Etching of Plasma Grown Thin Films, Proceedings of the 25th SPP Congress, University of the Philippines Los Banos, Laguna, Philippines, October 2007.
• C. Mateo, A. Garcia, F.R. Ramos, M. Defensor, R. Jaculbia, E. A. Prieto, J. Porquez, and A. Salvador, Strain Mechanism in the Epitaxially Lifted Off GaAs film bonded to MgO, Proceedings of the 25th SPP Congress, University of the Philippines Los Banos, Laguna, Philippines, October 2007.
• A Garcia, A Salvador, and MFB Somintac, Rapid Cooling of Uncapped Indium Arsenide Quantum Dot Surfaces Grown in Stranski-Krastanow mode by MBE, Proceedings of the 25th SPP Congress, University of the Philippines Los Banos, Laguna, Philippines , October 2007.
• E Estacio, M.H. Pham, M. Cadatal, N. Sarukura, A. Somintac, M. Defensor, A. Garcia, A. Salvador, Enhanced GaAs Terahertz Emission from MBE-grown InAs/GaAs Quantum Dot Structures, Proceedings of the 25th SPP Congress, University of the Philippines Baguio, Baguio City, Philippines , October 2008.

Research Disseminations:

•  A.B. Ontoria, R.B. Gapusan, W.H. Galarion, G.F. Mabeza, A.T. Garcia, C.S. Pascua, I.J.A. Agulo, “Future is Brighter through Carbon Nanotube (CNT) Solar Panel System.” 2^nd M.O.V.E. Symposium: From Raw Materials to Tangible Applications. October 18-19, 2013 at Mariano Marcos State University, Batac City, Ilocos Norte. (Poster)
• R.B. Gapusan, A.B. Ontoria, W.H. Galarion, G.F. Mabeza, A.T. Garcia, C.S. Pascua, Y. Matsushita, K. Miyazawa, I.J.A. Agulo, “Synthesis of Carbon Nanotubes via Floating Microcatalyst Atmospheric Chemical Vapor Deposition.” 2^nd M.O.V.E. Symposium: From Raw Materials to Tangible Applications. October 18-19, 2013 at Mariano Marcos State University, Batac City, Ilocos Norte. (Poster)