Results 21 to 30 of about 2,177,698 (204)

Quantitative evaluation of SARS-CoV-2 inactivation using a deep ultraviolet light-emitting diode

Scientific Reports, 2021
Inactivation technology for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is certainly a critical measure to mitigate the spread of coronavirus disease 2019 (COVID-19). A deep ultraviolet light-emitting diode (DUV-LED) would be a promising
Takeo Minamikawa, Takaaki Koma, Akihiro Suzuki, Takahiko Mizuno, Kentaro Nagamatsu, Hideki Arimochi, Koichiro Tsuchiya, Kaoru Matsuoka, Takeshi Yasui, Koji Yasutomo, Masako Nomaguchi   +10 more
doaj   +1 more source

Research Progress of AlGaN-Based Deep Ultraviolet Light-Emitting Diodes

Micromachines, 2023
AlGaN-based deep ultraviolet light-emitting diodes (DUV LEDs) have great application prospects in sterilization, UV phototherapy, biological monitoring and other aspects.
Ruiqiang Xu, Qiushi Kang, Youwei Zhang, Xiaoli Zhang, Zihui Zhang   +4 more
doaj   +1 more source

Improvement of Light Extraction in Deep Ultraviolet GaN Light Emitting Diodes with Mesh P-Contacts

Applied Sciences, 2020
One of the main reasons that the emission efficiency of GaN-based light-emitting diodes (LEDs) decreases significantly as the emission wavelength shorter than 300 nm is the low light extraction efficiency (LEE). Especially in deep ultra-violet (DUV) LEDs,
Shiou-Yi Kuo, Chia-Jui Chang, Zhen-Ting Huang, Tien-Chang Lu   +3 more
doaj   +1 more source

Rapid inactivation of human respiratory RNA viruses by deep ultraviolet irradiation from light-emitting diodes on a high-temperature-annealed AlN/Sapphire template

Opto-Electronic Advances, 2023
Efficient and eco-friendly disinfection of air-borne human respiratory RNA viruses is pursued in both public environment and portable usage. The AlGaN-based deep ultraviolet (DUV) light-emission diode (LED) has high practical potentials because of its ...
Ke Jiang, Simeng Liang, Xiaojuan Sun, Jianwei Ben, Liang Qu, Shanli Zhang, Yang Chen, Yucheng Zheng, Ke Lan, Dabing Li, Ke Xu   +10 more
doaj   +1 more source

Untersuchung der Duv-Präferenz in Abhängigkeit von korrelierter Farbtemperatur (CCT), Farbgamut und betrachteten Objekten [PDF]

, 2023
Der Weißpunkt einer im Innenraum verwendeten LED-Lichtquelle hat einen entscheidenden Einfluss darauf, ob Menschen die Beleuchtung akzeptieren oder nicht.
Klabes, Julian, Kemmler, Elisabeth, Khanh, Tran Quoc, Myland, Paul   +3 more
core   +1 more source

DataSheet1_A compact portable photoacoustic sensor for sub-ppm level SO2 detection with a DUV-LED and a non-resonant photoacoustic cell.docx

, 2023
A photoacoustic module based on a novel 273 nm deep-ultraviolet light-emitting diode (DUV-LED) was developed for sulfur dioxide (SO2) detection. The DUV-LED with an emission angle of 60° emitted a power of 10 mW.
Lei Dong (165252), Hongpeng Wu (6631811), Yujing Jing (17686029), Chaofan Feng (17686032), Ruyue Cui (9356433), Jiyu Xue (17686035)   +5 more
core   +1 more source

Temperature-dependent study on AlGaN-based deep ultraviolet light-emitting diode for the origin of high ideality factor

AIP Advances, 2021
Deep ultraviolet light-emitting diodes (DUV LEDs) are promising light sources for disinfection, especially during the pandemic of novel coronavirus (COVID-19). Despite much effort in the development of DUV LEDs, the device temperature and ideality factor
Yanjun Liao, Ding Li, Qi Guo, Yufeng Liu, Haiming Wang, Weiguo Hu, Zhong Lin Wang   +6 more
doaj   +1 more source

Nearly Efficiency-Droop-Free AlGaN-Based Ultraviolet Light-Emitting Diodes with a Specifically Designed Superlattice p-Type Electron Blocking Layer for High Mg Doping Efficiency

Nanoscale Research Letters, 2018
This work reports a nearly efficiency-droop-free AlGaN-based deep ultraviolet light-emitting diode (DUV LED) emitting in the peak wavelength of 270 nm. The DUV LED utilizes a specifically designed superlattice p-type electron blocking layer (p-EBL).
Zi-Hui Zhang, Sung-Wen Huang Chen, Chunshuang Chu, Kangkai Tian, Mengqian Fang, Yonghui Zhang, Wengang Bi, Hao-Chung Kuo   +7 more
doaj   +1 more source

Band-Engineered Structural Design of High-Performance Deep-Ultraviolet Light-Emitting Diodes

Crystals, 2021
In this study, systematic structural design was investigated numerically to probe into the cross-relating influences of n-AlGaN layer, quantum barrier (QB), and electron-blocking layer (EBL) on the output performance of AlGaN deep-ultraviolet (DUV) light-
Jih-Yuan Chang, Man-Fang Huang, Chih-Yung Huang, Shih-Chin Lin, Ching-Chiun Wang, Yen-Kuang Kuo   +5 more
doaj   +1 more source

Where's the midwifery in midwife-led care? [PDF]

, 2002
THE PURPOSE OF THIS ARTICLE is to share some of our insights and thoughts about midwife-led care (MLC) which have arisen whilst engaged in an action research project recently.
Deery, Ruth, Hughes, Deborah
core   +4 more sources