(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 conference will showcase the works of authors, illustrators, and scholars which embody Latino culture and art as a means to promote literacy and reading in Latino children.
Durango Building, first floor, Downtown Campus
Registration is open now for this family-friendly and dog-friendly run that supports the UTSA Alumni Association scholarship fund.
Convocation Center, Main Campus
Join the Department of Interdisciplinary Learning and Teaching for the 14th Annual UTSA Storytelling Festival featuring Nancy Simpson, storyteller and keynote speaker. The event is free and open to the public.
Main Building, Ground Floor Lobby, Main Campus
Students are invited to a semi-formal, dinner banquet with an awards presentation and dancing. Keynote speaker will be San Antonio City Councilman William Cruz Shaw. Tickets must be purchased by Feb 19 at Roadrunner Express. UTSA students are $15 and guests are $20.
H-E-B Student Union Ballroom (HSU 1.104/1.106), Main Campus
Dr. Don Jenkins from UT Health SA will lead this event UTSA with up to 30 certified STB trainers, and train up to 300 UTSA students and personnel in stop the bleed methods.
H-E-B Student Union Ballroom (HSU 1.106), Main Campus
Get to know more about the Bexar County Criminal District Court candidates' stance on the issues before voting in the primary election on March 6.
Buena Vista Street Building, Aula Canaria (BVB 1.328), Downtown Campus
As part of RecycleMania,UTSA will provide sensitive document shredding services for the UTSA community. Bring documents to the parking lot between Student Union & Ximenes Avenue Garage. Document pick up also available for the Downtown and Hemisfair Campuses.
H-E-B Student Union parking lot, Main Campus
Lt. Gen. (Ret.) Koichiro Bansho will speak the importance of the Japan-U.S. relations from the historical and security perspectives. He will go over the history and future of the alliance between the two countries.
H-E-B Student Union, Travis Room (HSU 2.202), Main 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.
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