(Feb. 13, 2012) -- Researchers Gangadharan Ajith Kumar, Madhab Pokhrel and Dhiraj K. Sardar in the UTSA Laser and Biophotonics Laboratories have develop the world's most intense infrared-activated, light-emitting phosphor. The discovery will advance the underlying technology of LEDs, lasers and other electronic displays.
Photons or light emitting particles are the focus of the scientific discipline photonics. Phosphors are photons that emit colored light when excited with another color. The efficiency of phosphor light output depends on many material properties. While most phosphors excited by ultraviolet light are inefficient and lose a lot of thermal energy, excitation by infrared light makes phosphors more energy efficient and environmentally safe.
The trio created a unique phosphor that produces more intense light than any other infrared-activated phosphor on record. Kumar now is testing the discovery's application with an LED manufacturing company. Pokhrel, a UTSA Ph.D. student, is researching the material's potential to enhance silicon solar cell efficiency.
Recently, the researchers were honored by the Society of Photographic Instrumentation Engineers (SPIE) with one of four Green Photonics awards. They accepted the award at the SPIE Photonics West conference in San Antonio last month.
"When I heard UTSA's name along with Harvard, Caltech and other German researchers who received SPIE's Green Photonics Award, I was really excited," said Kumar. "It was exciting to see that our research was on that level and we were all on the same stage. We hope this attracts more students to UTSA who are interested in researching photonics."
SPIE, the international society for optics and photonics, was founded in 1955 to advance light-based technologies. The society serves more than 180,000 constituents from 168 countries advances emerging technologies through interdisciplinary information exchange, continuing education, publications, patent precedent, and career and professional growth.
The UTSA Department of Physics and Astronomy offers coursework in semiconductor technology, solid-state physics, theoretical physics, astrophysics, computer visualization, lasers and biophotonics, cosmology and relativity. Additionally, UTSA and the Space Science Division at Southwest Research Institute jointly offer a graduate degree in space physics, giving students firsthand experience in instrument and satellite development.
The winners of the competition held in December perform instrumental concertos and selections from operas accompanied by the orchestra. Tickets are $5. Each UTSA student with ID get one free ticket.
Arts Building, Recital Hall (ARTS 2.03.02), Main Campus
The College of Engineering invites you to the Tech Symposium showcasing innovative student projects & research performed across multiple disciplines. The symposium will not only include work in engineering, but also advances achieved in business and science.
Convocation Center, Main Campus
The Historical Trumpets and Flutes are premier chamber ensembles within the US Army Old Guard Fife and Drum Corps. actively serving their community and official military ceremonies will perform at UTSA. The concert is free and open to the public.
Arts Building, Band Rehearsal Hall (ARTS 2.03.20), Main Campus
Please join us for a free research symposium of nationally renowned scholars who will share their insights on 21st century educational policies and the climate they foster for today's schools, teachers and students.
Durango Building, Southwest Room (DB 1.124), Downtown Campus
The unofficial Fiesta event is an alcohol-free party that's a favorite among the UTSA community and San Antonio families. There will be free food, live music and other activities. Students will also be able to test out texting and driving and drunk driving simulators.
Paseo, Main Campus
United to Serve is a System-wide volunteer initiative involving UT System students, administrators, faculty and staff. Join fellow Roadrunner volunteers for this kickoff event prior to volunteering.
University Center Lawn, Main Campus
UTSA Music Biz Day is an annual music symposium for the San Antonio community and students to network with music professionals and learn about how to get involved in the industry independent of experience. The event is free and open to all.
Arts Building, Recital Hall (ARTS 2.03.02), Main Campus
The Policy Studies Center is hosting its first statewide Latino Policy Symposium to address public policies that contribute to the well-being of Latino families. The theme is Path to Power and Prosperity. This working summit provides an opportunity for public agencies, non-profits to review the impact of local and state policies targeting education, labor/employment/housing, and health and human services.
Buena Vista Street Building, Meeting Assembly Room (BVB 1.338), Downtown Campus
The University of Texas at San Antonio is dedicated to the advancement of knowledge through research and discovery, teaching and learning, community engagement and public service. As an institution of access and excellence, UTSA embraces multicultural traditions and serves as a center for intellectual and creative resources as well as a catalyst for socioeconomic development and the commercialization of intellectual property - for Texas, the nation and the world.
To be a premier public research university, providing access to educational excellence and preparing citizen leaders for the global environment.
We encourage an environment of dialogue and discovery, where integrity, excellence, inclusiveness, respect, collaboration and innovation are fostered.