Results 11 to 20 of about 200,461 (334)

Savings in Cooling Energy with a Thermal Management System for LED Lighting in Office Buildings

open access: yesEnergies, 2015
Light-emitting diode (LED) lighting should be considered for lighting efficiency enhancement, however, waste heat from light-emitting diode (LED) lighting increases the internal cooling load during the summer season.
Byung-Lip Ahn   +5 more
doaj   +1 more source

A Cooper pair light emitting diode [PDF]

open access: yes, 2009
We demonstrate Cooper-pair's drastic enhancement effect on band-to-band radiative recombination in a semiconductor. Electron Cooper pairs injected from a superconducting electrode into an active layer by the proximity effect recombine with holes injected
Akazaki, T.   +11 more
core   +2 more sources

Surface plasmon enhanced light-emitting diode [PDF]

open access: yes, 2000
A method for enhancing the emission properties of light-emitting diodes, by coupling to surface plasmons, is analyzed both theoretically and experimentally.
Lončar, Marko   +2 more
core   +1 more source

Absolute Calibration of a Large-diameter Light Source [PDF]

open access: yes, 2013
A method of absolute calibration for large aperture optical systems is presented, using the example of the Pierre Auger Observatory fluorescence detectors.
Brack, J. T.   +6 more
core   +2 more sources

Elucidating the role of hyperfine interactions on organic magnetoresistance using deuterated aluminium tris(8-hydroxyquinoline) [PDF]

open access: yes, 2009
Measurements of the effect of a magnetic field on the light output and current through an organic light emitting diode made with deuterated aluminium tris(8-hydroxyquinoline) have shown that hyperfine coupling with protons is not the cause of the ...
A. J. Drew   +6 more
core   +2 more sources

An experimental investigation of a 100-W high-power light-emitting diode array using vapor chamber–based plate

open access: yesAdvances in Mechanical Engineering, 2015
In this study, a compact 100-W input power light-emitting diode array vapor chamber–based plate has been fabricated to investigate the thermal performance.
Ping Zhang   +5 more
doaj   +1 more source

Comparisons among the diagnostic methods used for the detection of extra-pulmonary tuberculosis in Bangladesh

open access: yesInternational Journal of Mycobacteriology, 2012
The present study was an attempt to establish a suitable method for the effective diagnosis of extra-pulmonary tuberculosis in Bangladesh. In this regard, detection of Mycobacterium tuberculosis from 390 different extra-pulmonary specimens was performed ...
Saurab Kishore Munshi   +3 more
doaj   +1 more source

Progress of display performances: AR, VR, QLED, and OLED

open access: yesJournal of Information Display, 2020
In 2019, the device performances of the display technologies were largely advanced by the development of new materials and of the device architecture and driving scheme.
Ho Jin Jang   +4 more
doaj   +1 more source

Microphotonic parabolic light directors fabricated by two-photon lithography [PDF]

open access: yes, 2011
We have fabricated microphotonic parabolic light directors using two-photon lithography, thin-film processing, and aperture formation by focused ion beam lithography. Optical transmission measurements through upright parabolic directors 22 μm high and 10 
Atwater, H. A.   +8 more
core   +1 more source

Standardization of phototherapy for neonatal hyperbilirubinemia using multiple-wavelength irradiance integration

open access: yesPediatrics and Neonatology, 2020
Background: Phototherapy with radiation of 460–490 nm wavelengths provides the most potent therapeutic effect for neonatal jaundice. However, the efficacy of phototherapy has been estimated using single-wavelength detectors with sensitivity at ...
Shin Kato   +8 more
doaj   +1 more source

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