Results 41 to 50 of about 182,765 (350)
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
3D modelling of enhanced surface emission using surface roughening [PDF]
, 2006 A 3D FDTD modelling is used to study the effect of surface roughening on the vertical emission of a point source emitting at lambda0=0.94 mum embedded in GaAs with a mirror behind the dipole.
I.J. Buss +24 more
core +1 more source
Brazilian Oral Research, 2005 With the development of composite resin polymerization techniques, LEDs were introduced to the market place. Based on the studied literature, the aim of this study was to evaluate, through microtensile testing, the bond strength to enamel of a composite ...
Ana Paula Morales Cobra Carvalho +1 more
doaj +1 more source
Applied Sciences, 2020 We investigated a light emitting diode (LED) lighting system applied to a water bamboo field during winter season at night, and the results indicated that this lighting system can prevent the stunting of water bamboo leaves and further assist its growth.
Vincent K. S. Hsiao +11 more
doaj +1 more source
Scientific Reports, 2017 Coherence properties of different light sources and how they affect the image quality of holographic display are investigated. Temporal coherence is related to the intrinsic spectrum bandwidth of the light source, while spatial coherence can be affected ...
Yuanbo Deng, Daping Chu
doaj +1 more source
Micromachines, 2023 This study investigated a reflective transparent structure to improve the optical efficiency of 850 nm infrared light-emitting diodes (IR-LEDs), by effectively enhancing the number of extracted photons emitted from the active region.
Hyung-Joo Lee +3 more
doaj +1 more source
A new LED-LED portable CO2 gas sensor based on an interchangeable membrane system for industrial applications [PDF]
, 2011 CO2 monitoring is important for many areas of high economic relevance, like environmental monitoring, control of biotechnological processes in bio-pharmaceutical industries, and the food industry, particularly controlled atmosphere storage rooms and ...
Vargas-Sansalvador, Isabel María Pérez de +15 more
core +1 more source
Glare by Light Emitting Diode (LED) vehicle traffic signals
, 2015 BackgroundIn this paper we analyze devices for traffic signals (traffic lights) with light-emitting diode (LED) technology.MethodsThe traditional measurements of luminous intensity were complemented with the luminance analysis of the devices, evaluated ...
P. Ixtaina +3 more
semanticscholar +1 more source
Light-emitting diode effects on combined decellularization of tracheae. A novel approach to obtain biological scaffolds [PDF]
Acta Cirúrgica Brasileira, 2014 PURPOSE: To obtain a decellularized tracheal scaffold associating traditional approaches with the novel light-emitting diode (LED) proposal.METHODS:This study was performed with New Zealand adult rabbits weighing 3.0 - 4.0 kg.
Thaiane Cristine Evaristo +8 more
doaj +1 more source