Results 21 to 30 of about 19,360,112 (295)

Spectral Optimization of Three-Primary LEDs by Considering the Circadian Action Factor

IEEE Photonics Journal, 2016
For humans, nonvisual biological effects, which can be parameterized by the circadian action factor (CAF), are important for their health and work performance.
Li-Li Zheng, Ting-Zhu Wu, Yi-Jun Lu, Yu-Lin Gao, Ya-Jun Wang, Li-Hong Zhu, Zi-Quan Guo, Zhong Chen   +7 more
doaj   +1 more source

Investigation on Circadian Action and Color Quality in Laser-Based Illuminant for General Lighting and Display

IEEE Photonics Journal, 2020
In this work, the genetic algorithm is employed to optimize both circadian action factor (CAF) and color quality of laser-based illuminants (LBIs) with three, four, and five spectral bands to disclose its possible use in two common white lighting ...
Shuo-Di Lei, Bi-Jing Liu, Yang Gao, Xiao-Ya Dong, Yu-Jia Gong, Jian Xu, Yun-Xin Xu, Dong Wang, Zi-Quan Guo, Ting-Zhu Wu, Chen-Liang Zhou, Zong-Jian Cai, Yi-Jun Lu, Zhong Chen   +13 more
doaj   +1 more source

GaN-Based LEDs Grown on Graphene-Covered SiO₂/Si (100) Substrate

Crystals, 2020
The growth of nitride on large-size and low-cost amorphous substrates has attracted considerable attention for applications in large-scale optoelectronic devices.
Wurui Song, Fang Ren, Yunyu Wang, Yue Yin, Shuo Zhang, Bo Shi, Tao Feng, Jianwei Wang, Meng Liang, Yiyun Zhang, Tongbo Wei, Jianchang Yan, Junxi Wang, Jinmin Li, Xiaoyan Yi, Zhiqiang Liu   +15 more
doaj   +1 more source

Emerging hyperfluorescent emitters for solid-state lighting [PDF]

, 2023
Organic light-emitting diodes (OLEDs) are of high interest for display, biomedical, and solid-state lighting applications. But costs and color purity are still issues with OLED technology.
SANTOSH KUMAR, BEHERA, Rubén , Costa
core   +1 more source

Investigation on Three-Hump Phosphor-Coated White Light-Emitting Diodes for Healthy Lighting by Genetic Algorithm

IEEE Photonics Journal, 2019
In this paper, we carry out the theoretical spectral optimization and perform experiments by varying temperature and electrical current primarily on one-phosphor-coated three-hump white light-emitting diode (LED) for healthy indoor or outdoor lighting by
Ziquan Guo, Kai Liu, Lili Zheng, Tien-mo Shih, Yijun Lu, Tingzhu Wu, Yi Lin, Yuxue Zhang, Jianghui Zheng, Jie Chen, Lianxin Chen, Zhong Chen   +11 more
doaj   +1 more source

Solid-state light-phase detector [PDF]

Nature Photonics, 2014
A solid-state device is demonstrated that can detect the absolute offset between the carrier wave and envelope of an ultrashort pulse, the carrier–envelope phase. It holds promise for routine measurement and monitoring of the carrier–envelope phase in attosecond experimental set-ups.
T. Paasch-Colberg, A. Schiffrin, N. Karpowicz, S. Kruchinin, Ö. Sağlam, S. Keiber, O. Razskazovskaya, S, Mühlbrandt, A. Alnaser, M. Kübel, V. Apalkov, D. Gerster, J. Reichert, T. Wittmann, J.V. Barth, M.I. Stockman, R. Ernstorfer, V.S. Yakovlev, R. Kienberger, F. Krausz   +20 more
openaire   +5 more sources

Potential Health Issues of Solid State Lighting

, 2014
International audienceThis report addresses the issues of the potential effects of solid-state lighting (SSL) products on human health. This work mainly focuses on glare issues, photobiological effects caused by the optical radiation on the eye and the ...
Zissis, Georges, Martinsons, Christophe
core   +4 more sources

Improved Crystalline Quality of AlN by Epitaxial Lateral Overgrowth Using Two-Phase Growth Method for Deep-Ultraviolet Stimulated Emission

IEEE Photonics Journal, 2016
We report on the maskless epitaxial lateral overgrowth (ELOG) of the AlN layer on trench-patterned AlN/sapphire templates by metal-organic chemical vapor deposition (MOCVD).
Xiang Chen, Jianchang Yan, Yun Zhang, Yingdong Tian, Yanan Guo, Shuo Zhang, Tongbo Wei, Junxi Wang, Jinmin Li   +8 more
doaj   +1 more source

Cooling and Mechanical Performance Analysis of a Trapezoidal Thermoelectric Cooler with Variable Cross-Section

Energies, 2020
In this study, a full-scale three-dimensional trapezoidal thermoelectric cooler model is constructed to study its cooling performance and mechanical reliability using finite element simulation.
Tianbo Lu, Yuqiang Li, Jianxin Zhang, Pingfan Ning, Pingjuan Niu   +4 more
doaj   +1 more source

Minimizing Ecological Impacts of Marine Energy Lighting

Journal of Marine Science and Engineering, 2022
Marine energy is poised to become an important renewable energy contributor for the U.S., but widespread deployment of the technology hinges on its benefits outweighing the potential ecological impacts.
Caroline E. Reilly, Julia Larson, Alicia M. Amerson, Garrett J. Staines, Joseph H. Haxel, Paul Morgan Pattison   +5 more
doaj   +1 more source