Results 71 to 80 of about 201,281 (284)

Deep-ultraviolet Smith–Purcell radiation

Optica, 2019
Smith–Purcell radiation (SPR) is electromagnetic radiation generated by free electrons passing over a periodic grating. Here, having the electron beam pass through 30 nm wide slots in an Al grating greatly shortens the SPR wavelength, and a directional, ultra-broadband, tunable light source spanning λ0≈230–1100 nm is demonstrated.
Yu Ye, Fang Liu, Mengxuan Wang, Lixuan Tai, Kaiyu Cui, Xue Feng, Wei Zhang, Yidong Huang   +7 more
openaire   +1 more source

Interactions between Molten High‐Silicon Electrical Steels and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
This study examines how several molten high‐silicon electrical steels interact with both conventional and recycled MgO–C refractories. For this, various immersion experiments are conducted. In addition to infiltration, a number of mechanisms are identified and explained that control the corrosion of the refractory material.
Lukas Neubert, Matheus Roberto Bellé, Anton Yehorov, Anhelina Mospan, Till M. J. Stadtmüller, Seetharaman Sridhar, Christos G. Aneziris, Olena Volkova   +7 more
wiley   +1 more source

Solar-Blind Mobile Deep Ultraviolet Optical Communication Utilizing Photomultiplier Tubes

Photonics
Ozone in the atmosphere strongly absorbs deep ultraviolet light with wavelengths between 200 and 280 nm. Therefore, this characteristic is advantageous and promising for unperturbed, non-disturbed information transmission in fields such as secure ...
Lei Zhang, Tianle Li, Yongjin Wang
doaj   +1 more source

High-Performance Deep Ultraviolet Photodetector Based on NiO/β-Ga2O3 Heterojunction

Nanoscale Research Letters, 2020
Ultraviolet (UV) photodetector has attracted extensive interests due to its wide-ranging applications from defense technology to optical communications.
Menghan Jia, Fang Wang, Libin Tang, Jinzhong Xiang, Kar Seng Teng, Shu Ping Lau   +5 more
doaj   +1 more source

Effect of Ultraviolet Irradiation on 4H-SiC PiN Diodes Characteristics

Nanoscale Research Letters, 2021
In this paper, the effect of ultraviolet (UV) irradiation on the static characteristics of high voltage 4H-SiC PiN is investigated. No significant change is observed in the forward on state characteristic of 4H-SiC PiN diodes before and after ultraviolet
Xingliang Xu, Lin Zhang, Peng Dong, Zhiqiang Li, Lianghui Li, Juntao Li, Jian Zhang   +6 more
doaj   +1 more source

Deep-ultraviolet Raman scattering spectroscopy of monolayer WS2 [PDF]

Scientific Reports, 2018
AbstractRaman scattering measurements of monolayer WS2 are reported as a function of the laser excitation energies from the near-infrared (1.58 eV) to the deep-ultraviolet (4.82 eV). In particular, we observed several strong Raman peaks in the range of 700∼850 cm−1 with the deep-ultraviolet laser lights (4.66 eV and 4.82 eV). Using the first-principles
Hsiang-Lin Liu, Teng Yang, Yuki Tatsumi, Ye Zhang, Baojuan Dong, Huaihong Guo, Zhidong Zhang, Yasuaki Kumamoto, Ming-Yang Li, Lain-Jong Li, Riichiro Saito, Satoshi Kawata   +11 more
openaire   +3 more sources

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé, Lukas Neubert, Anton Yehorov, Till M. J. Stadtmüller, Christos G. Aneziris, Olena Volkova   +5 more
wiley   +1 more source

Surface Brightness of Starbursts at Low and High Redshifts

, 1998
Observations in the rest frame ultraviolet from various space missions are used to define the nearby starburst regions having the highest surface brightness on scales of several hundred pc.
Daniel W. Weedman, Donald P. Schneider, Jeffrey B. Wolovitz, Madau P., Matthew A. Bershady, Rowan-Robinson M.   +5 more
core   +2 more sources

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

Integrated Deep Ultraviolet Doublet Metalens for Projection Imaging

Applied Sciences
Metalenses, with their unique modulation of light, are in great demand for many potential applications. As a proof-of-principle demonstration, we focus on designing SiO2 metalenses that operate in the deep ultraviolet region, specifically around 193 nm ...
Xiaoyan Shi, Fuming Yang, Enzhu Hou, Zhongzhu Liang   +3 more
doaj   +1 more source