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UTSA physicists honored by peers for advances in energy-efficient lighting

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(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.

 

 

Events
Feb. 13, 10 a.m. - 5 p.m.

29th annual Asian Festival - Year of the Monkey

The UTSA Institute of Texan Cultures invites Texas and Texans to the Asian Festival. What began as a traditional family reunion for the Chinese New Year has expanded to include other Asian communities and participants, showcasing their unique culture and traditions.
The UTSA Institute of Texan Cultures

Feb. 13, 1 p.m.

2016 Interdisciplinary Studies Colloquium

Join the UTSA Department of Interdisciplinary Learning and Teaching in celebrating interdisciplinary inquiry at the 2016  Interdisciplinary Studies Colloquium.  The colloquium will include a panel of faculty and recent doctoral graduate and a showcase of the best IDS undergraduate inquiry projects of the year 2015. The event is free and open to the public.
Business Building (BB 2.06.04), UTSA Main Campus

Feb. 15, 6 - 8 p.m.

Veterans' Networking Mixer

The intent of this event is to connect student veterans with employers who are seeking to provide advice and potentially recruit driven, skilled and equipped candidates for their organizations. This is an exciting opportunity to network and meet with seasoned professionals who will assist and guide you in transitioning into your next career move.
Wyndam Garden Riverwalk Hotel

Feb. 16, 8:30 - 11:30 a.m.

S.T.E.M. Career Fair

Are you looking for career opportunities in Science, Technology, Engineering or Math? Come to the SPRING 2015 STEM Career Fair. Recruiters from across the STEM fields will be present with full-time, part-time and/or internship opportunities. Professional dress is required. Bring plenty of resumes! Download the UTSA Career Fair Plus App on iOS and Android.
Convocation Center, Main Campus

Feb. 16, 1:30 - 4:30 p.m.

Spring 2016 All Majors Career & Internship Fair

Come to the Spring 2016 All Majors and Internship Career Fair. Recruiters from across all industries will be present with full-time or internship opportunities. Professional Dress is Required. Bring plenty of resumes! Download the UTSA Career Fair Plus App on iOS and Android.
Convocation Center, Main Campus

Feb. 17, 5:30 p.m.

CACP Speaker Series continues with Cesar Pelli

The UTSA College of Architecture, Construction and Planning (CACP) welcomes renowned architect Cesar Pelli as part of the CACP’s 2015-16 Speaker Series. Pelli is founder and Senior Principal of the New Haven, Conn. firm Pelli Clarke Pelli Architects. In his talk, “Becoming an Architect,” Pelli will present and discuss projects that were critical steps in his career.
Buena Vista Theater (BV 1.326), Downtown Campus

Feb. 23, 5:30 p.m.

African-American Social Welfare Pioneers Responding to Community Needs

The UTSA College of Public Policy presents the Dean's Distinguished Lecture Series featuring Dr. Iris Carlton-LaNey, Professor of the School of Social Work at the University of North Carolina-Chapel Hill. Dr. Carlton-LaNey will speak to the UTSA community about the role and impact of African-Americans in the social work profession.
Buena Vista Theater (BV 1.326), Downtown Campus

Feb. 23, 7 p.m.

Presentation and Book Signing with Luis Carlos Montalvan

Please join us for a presentation and book signing by Luis Carlos Montalván (Fmr. Capt., USA), author of the New York Times Bestseller Until Tuesday and the international award-winning childrens book Tuesday Tucks Me In. His books will be available for purchase at the UTSA Bookstore. This event is free and open to the public.
Southwest Room (DB 1.124), Downtown Campus

Feb. 25, 6 p.m.

12th Annual Black Heritage Gala

The 12th Annual Black Heritage Gala is a formal event which includes a student performance, keynote remarks by Michael Brown, an award presentation, dinner and dancing. Tickets are $10 for UTSA students and $15 for all other guests. Tickets are on sale now at Roadrunner Express. Contact (210) 458-4770 for more information.
H-E-B University Center Ballroom, Main Campus

Feb. 27, 9 a.m.

Cultural Contrasts in Latin America

The UTSA Institute of Texan Cultures will host a free workshop focusing on teaching Latin American culture and geography for students seeking their teacher certification. The workshop includes free resources for teaching Latin American subject matter as well as presentations on language, identity, music, geography, and political and developmental history, and a special educators’ tour of the museum’s Los Tejanos exhibit. Free with registration.
The UTSA Institute of Texan Cultures (ITC 3.01.02)


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