Results 21 to 30 of about 5,570,802 (292)
Thin-film photonic crystal LEDs with enhanced directionality [PDF]
, 2009 The use of photonic crystals for light extraction from light-emitting diodes (LEDs) gives the possibility to shape the farfield emission pattern. This is of particular interest for étendue-limited LED applications that require a more directional ...
Bergenek, Krister +8 more
core +1 more source
Light emitting diodes (LEDs) applied to microalgal production [PDF]
Trends in Biotechnology, 2014 Light-emitting diodes (LEDs) will become one of the world's most important light sources and their integration in microalgal production systems (photobioreactors) needs to be considered. LEDs can improve the quality and quantity of microalgal biomass when applied during specific growth phases.
Schulze, Peter S.C. +4 more
openaire +2 more sources
Applied Sciences, 2017 This paper presents a single-stage alternating current (AC)/direct current (DC) light-emitting diode (LED) tube lamp driver for energy-saving indoor lighting applications; this driver features power-factor corrections and soft switching, and also ...
Chun-An Cheng +3 more
doaj +1 more source
Light emitting diode (LED) use in artificial lighting for broiler chicken production [PDF]
Engenharia Agrícola, 2014 Light emitting diode (LED) has been used in commercial poultry industry by presenting superior energy savings and providing feasibility on production process.
Mayara R. de Santana +5 more
doaj +2 more sources
Intra-cavity frequency doubling of an electrically pumped edge-emitting 980 nm laser diode with PPLN [PDF]
, 2009 The growing trend for laser-based projection displays makes intra-cavity frequency doubling (ICFD) of electrically and optically surface emitting diode lasers in the near IR region become more interesting [1-3].
Gawith, C.B.E. +9 more
core +2 more sources
Energy Reports, 2021 Light-fidelity (Li-Fi) communication systems have gained increased concerns as new and alternative paradigm for wireless communications. Through the increased applications of light emitting diode (LED) lamps for lighting in indoor and outdoor ...
Anwaar M. Damerdash +4 more
doaj +1 more source
Wavelength-Multiplexed Polymer LEDs: Towards 55 Mb/s Organic Visible Light Communications [PDF]
, 2015 We present recent progress on visible light communication systems using polymer light-emitting diodes as the transmitters and a commercial silicon photodetector as the receiver.
Papakonstantinou, I +15 more
core +1 more source
EPJ Web of Conferences, 2017 Light emitting diode (LED) employed a numerous applications such as displaying information, communication, sensing, illumination and lighting. In this paper, InGaN/AlGaN based on one quantum well (1QW) light emitting diode (LED) is modeled and studied ...
Abdul Halim N. Syafira +4 more
doaj +1 more source
LEDs: Sources and Intrinsically Bandwidth-Limited Detectors
Sensors, 2017 The increasing demand for light emitting diodes (LEDs) is driven by a number of application categories, including display backlighting, communications, signage, and general illumination.
Roberto Filippo +2 more
doaj +1 more source
4.343-Gbit/s Green Semipolar (20-21) μ-LED for High Speed Visible Light Communication
IEEE Photonics Journal, 2021 A record 4.343 Gbit/s green color micro-light-emitting-diode (μ-LED) based visible-light-communication (VLC) is demonstrated. We designed and fabricated the InGaN/GaN μ-LED array with modulation bandwidth >1.1 GHz.
Yun-Han Chang +8 more
doaj +1 more source