Results 71 to 80 of about 6,640,031 (344)

Evaluation of the Effect of Protective Sleeve on Output Intensity of Light Emitting Diode Light Cure Units [PDF]

Journal of Dental Materials and Techniques, 2016
Aim: The purpose of this study was to compare the difference in the output intensity of Light Emitting Diode (LED) light cure (LC) devices with and without a protective sleeve and its clinical significance.  Materials and Methods: The output intensity of
Amit Jena, Satyajit Mohapatra, Govind Shashirekha   +2 more
doaj   +1 more source

Deciphering the Photopolymerization‐Induced Nanostructures and Interface Formation for Submicrometer Additive Manufacturing

Advanced Functional Materials, EarlyView.
This work reveals the UV‐curing‐induced monomer‐rich domain, oligomer‐rich domain, and entangled oligomer domain. The cured submicron films in stressed state induce interlayer nano‐wrinkle structures during the deposition of the second layer. Stress‐free cured films in relaxed state form non‐diffusive, diffusive and semi‐diffusive interlayer ...
Shouzheng Chen, Yufeng Zhai, Jungui Zhou, Lixing Li, Simon Schraad, Guangjiu Pan, Xuehe Jiang, Sarathlal Koyiloth Vayalil, Rolf A. T. M. van Benthem, Julien R. G. Navarro, Johan F. G. A. Jansen, Mats K. G. Johansson, Peter Müller‐Buschbaum, Stephan V. Roth   +13 more
wiley   +1 more source

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., Li, Kang, Aiyun Yao, Yao, Aiyun, Knight, Ian G., C.B.E. Gawith, Copner, N.J., Kang Li, N.J. Copner, Ian G. Knight   +9 more
core   +2 more sources

Comparative analysis of LED priming effects on two medicinal lemon balm genotypes one and three weeks post-drought stress

BMC Plant Biology
Background Light is essential for producing high-quality plants. The advancement of light-emitting diode technology has unlocked new opportunities for growing plants in controlled settings.
Tayebeh Ahmadi, Leila Shabani, Mohammad Reza Sabzalian, Sahar Hassannejad   +3 more
doaj   +1 more source

The requirements, specifications, and component selection of the light emitting diode (LED) spectrophotometer.

, 2020
The requirements, specifications, and component selection of the light emitting diode (LED) spectrophotometer.
Michael W. Prairie (8374188), Seth H. Frisbie (7821866), Shreyas Parbat (8374197), Erika J. Mitchell (7821869), Anyamanee H. Saksri (8374194), K. Kesava Rao (8374191)   +5 more
core   +1 more source

Sub‐1 ms Optoelectronic Synapse Based on {ZnCdO/ZnO} Multilayer Structure for High‐Speed Neuromorphic Vision Systems

Advanced Functional Materials, EarlyView.
Eu‐doped {ZnCdO/ZnO} structures grown on Si are developed, showcasing dual‐functionality controlled by europium doping. While high europium concentration transforms the device into an ultrafast, self‐powered photodetector, low‐doped structures can be used as an optoelectronic synapse.
Igor Perlikowski, Eunika Zielony, Adrian Kaim, Ewa Przeździecka   +3 more
wiley   +1 more source

Circularly Polarized Electroluminescence and Spin‐Polarized Carrier Transport in Chiral‐Doped Polymer Films

Advanced Functional Materials, EarlyView.
Chiral dopants induce supramolecular chirality in an achiral polymer (PFO), generating spin‐polarized carriers via the chiral‐induced spin selectivity (CISS) and suggesting a possible contribution of Spin‐polarized carrier transport to circularly polarized electroluminescence (CPEL).
Kazuyuki Asahi, Masashi Hasegawa, Yuuya Nagata, Tamaki Nakano, Hiroyuki Nishikawa   +4 more
wiley   +1 more source

Principles and mechanisms of ultraviolet light emitting diode technology for food industry applications

Innovative Food Science & Emerging Technologies, 2019
The application of ultraviolet (UV) light to water, food contact surfaces and medical equipment for microbial inactivation is widely employed. To date, UV disinfection sources employed are primarily low-pressure and medium-pressure mercury lamps ...
L. Hinds, C. O'Donnell, M. Akhter, B. Tiwari   +3 more
semanticscholar   +1 more source

Managing Charge Transport and Exciton Generation for Highly Efficient, Bright, and Stable Near‐Infrared Organic Radical Light‐Emitting Diodes

Advanced Functional Materials, EarlyView.
High‐performing near‐infrared (NIR) organic light‐emitting diodes are demonstrated using an efficient and stable 800 nm‐emissive organic radical and a thermally activated delayed fluorescence (TADF) host. TADF‐assisted exciton generation combined with improved charge transport enables high external quantum efficiency (>8%), high radiance (>70,000 mW sr−
Hwan‐Hee Cho, Min‐Hsuan Chang, Yi‐Syun Chen, Tetsuro Kusamoto, Emrys W. Evans, Yuh‐Renn Wu, Richard H. Friend   +6 more
wiley   +1 more source

Passive filter design for reducing harmonics in light emitting diode bulb

MATEC Web of Conferences, 2018
Harmonics reduce power quality and increase inefficiency. Although light emitting diode (LED) bulb has been considered more efficient than previous bulb technologies; its internal circuits potentially generate additional problems. This paper has surveyed
Ali Hanafiah Rambe, Safril Muhammad, Suherman Suherman   +2 more
doaj   +1 more source