(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.
This comprehensive music experience for middle and high school students focuses on developing the musician and the campers playing techniques. Campers will perform with one of UTSA’s concert bands and attend classes that include rehearsals, sectional and master classes and performing soundtrack music.
Arts Building, Main Campus
Experience a fun, interactive week at UTSA as new students and their families take the first steps to becoming a Roadrunner.
Various locations, Main Campus and Downtown Campuses
Kids from kindergarten through high school will immerse in the fields of science, technology, engineering and math through hands-on activities.
Applied Engineering and Technology (AET 0.102), Main Campus and Buena Vista Street Building (BVB 3.328), Downtown Campus
Novice and experienced boys and girls in grades 1-8 will be divided up by age and ability to gain the most skills and knowledge for their level of play.
Park West Athletics Complex
Emerging and fluent writers can practice and refine their writing skills, share with others and grow as artisans and thinkers. Each day, students will investigate the art of writing, apply the craft to their own writing, and celebrate what they have done with fellow campers.
Buena Vista Street Building (BVB 3.324), Downtown Campus
UTSA Men's Basketball coaching staff and players host shoot, skills, day, elite and parent/child camps and clinics.
Convocation Center, Main Campus
Camps is full for this summer. This exciting and interactive camp is designed for high school students. The camp will have interactive workshops, hands-on challenges, tours, panels and friendly competitions.
Biotechnology, Science and Engineering Building, Main Campus
This unique camp gives rising junior and senior high school students the opportunity to understand how the ever-changing American criminal justice system works. Students will learn a basic understanding of crime and justice and the roles of the police, courts and corrections.
Durango Building, Downtown Campus
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