Results 21 to 30 of about 46,598 (256)

Aqueous pyruvate partly dissociates under deep ultraviolet irradiation but is resilient to near ultraviolet excitation [PDF]

Nature Communications
The deep ultraviolet photochemistry of aqueous pyruvate is believed to have been essential to the origin of life, and near ultraviolet excitation of pyruvate in aqueous aerosols is assumed to contribute significantly to the photochemistry of the Earth’s ...
Jan Thøgersen, Fani Madzharova, Tobias Weidner, Frank Jensen   +3 more
doaj   +2 more sources

Dual polarization for efficient III-nitride-based deep ultraviolet micro-LEDs [PDF]

Scientific Reports
The deep ultraviolet (DUV) micro-light emitting diode (μLED) has serious electron leakage and low hole injection efficiency. Meanwhile, with the decrease in the size of the LED chip, the plasma-assisted dry etching process will cause damage to the side ...
Zhongqiu Xing, Yongjie Zhou, Aoxiang Zhang, Yipu Qu, Fang Wang, Juin J. Liou, Yuhuai Liu   +6 more
doaj   +2 more sources

Temperature-Dependent Self-Powered Solar-Blind Photodetector Based on Ag₂O/β-Ga₂O₃ Heterojunction

Nanomaterials, 2022
In this study, a high-photoresponsivity self-powered deep ultraviolet (DUV) photodetector based on an Ag2O/β-Ga2O3 heterojunction was fabricated by depositing a p-type Ag2O thin film onto an n-type β-Ga2O3 layer.
Taejun Park, Sangbin Park, Joon Hui Park, Ji Young Min, Yusup Jung, Sinsu Kyoung, Tai Young Kang, Kyunghwan Kim, You Seung Rim, Jeongsoo Hong   +9 more
doaj   +1 more source

Fabrication of Transparent and Conductive SWCNT/SiO₂ Composite Thin-Film by Photo-Irradiation of Molecular Precursor Films

Nanomaterials, 2021
A single-walled carbon nanotube (SWCNT)-silica composite thin film on a quartz glass was formed by ultraviolet irradiation (20–40 °C) onto a spin-coated precursor film.
Naoki Ogawa, Hiroki Nagai, Yukihiro Kudoh, Takeyoshi Onuma, Taichi Murayama, Akinobu Nojima, Mitsunobu Sato   +6 more
doaj   +1 more source

Investigation of Light-Extraction Efficiency of Flip-Chip AlGaN-Based Deep-Ultraviolet Light-Emitting Diodes Adopting AlGaN Metasurface

IEEE Photonics Journal, 2021
Herein, we investigate the influence of an AlGaN metasurface on AlGaN-based deep-ultraviolet light-emitting diodes' light-extraction efficiency by utilizing the 3D finite-difference time-domain method.
Joosun Yun, Hideki Hirayama
doaj   +1 more source

Deep Ultraviolet Light-Emitting Diode Light Therapy for Fusobacterium nucleatum

Microorganisms, 2021
Background: Fusobacterium nucleatum, which is associated with periodontitis and gingivitis, has been detected in colorectal cancer (CRC). Methods: We evaluated the bactericidal effect of deep ultraviolet (DUV) light-emitting diode (LED) light therapy on ...
Soichiro Fukuda, Shunsuke Ito, Jun Nishikawa, Tatsuya Takagi, Naoto Kubota, Ken-ichiro Otsuyama, Hidehiro Tsuneoka, Junzo Nojima, Koji Harada, Katsuaki Mishima, Yutaka Suehiro, Takahiro Yamasaki, Isao Sakaida   +12 more
doaj   +1 more source

Deep-Ultraviolet Transparent Conductive MWCNT/SiO₂ Composite Thin Film Fabricated by UV Irradiation at Ambient Temperature onto Spin-Coated Molecular Precursor Film

Nanomaterials, 2021
Deep-ultraviolet (DUV) light-transparent conductive composite thin films, consisting of dispersed multiwalled carbon nanotubes (MWCNTs) and SiO2 matrix composites, were fabricated on a quartz glass substrate.
Hiroki Nagai, Naoki Ogawa, Mitsunobu Sato   +2 more
doaj   +1 more source

Anomalous Photocurrent Reversal Due to Hole Traps in AlGaN-Based Deep-Ultraviolet Light-Emitting Diodes

Micromachines, 2022
The trap states and defects near the active region in deep-ultraviolet (DUV) light-emitting diodes (LED) were investigated through wavelength-dependent photocurrent spectroscopy.
Seungyoung Lim, Tae-Soo Kim, Jaesang Kang, Jaesun Kim, Minhyup Song, Hyun Deok Kim, Jung-Hoon Song   +6 more
doaj   +1 more source

A superlens for the deep ultraviolet [PDF]

Applied Physics Letters, 2009
A superlens based on a single aluminum layer operating at deep ultraviolet (UV) wavelengths is investigated both, theoretically and experimentally. Using a wavelength of 157 nm double slits with a center-to-center separation of only 70 nm were experimentally resolved and simulations indicate a possible resolution down to 29 nm with experimentally ...
Schilling, Alina, Schilling, Joerg, Reinhardt, Carsten, Chichkov, Boris   +3 more
openaire   +2 more sources

Deep-ultraviolet cavity ringdown spectroscopy [PDF]

Optics Letters, 2004
The sensitive optical detection technique of cavity ringdown spectroscopy is extended to the wavelength range 197-204 nm. A novel design narrowband Fourier-transform-limited laser is used, and the technique is applied to gas-phase extinction measurements in CO2, SF6, and O2.
Sneep, M.C., Hannemann, S., van Duijn, E.J., Ubachs, W.M.G.   +3 more
openaire   +3 more sources