Results 51 to 60 of about 1,939 (181)

Rapid inactivation of SARS-CoV-2 with deep-UV LED irradiation

Emerging Microbes and Infections, 2020
The spread of novel coronavirus disease 2019 (COVID-19) infections worldwide has raised concerns about the prevention and control of SARS-CoV-2. Devices that rapidly inactivate viruses can reduce the chance of infection through aerosols and contact ...
Hiroko Inagaki, Akatsuki Saito, Hironobu Sugiyama, Tamaki Okabayashi, Shouichi Fujimoto   +4 more
doaj   +1 more source

Bio‐inspired nanophotonics: Structural color, chirality, and resonance metasurfaces

InfoMat, EarlyView.
A butterfly‐wing‐inspired anisotropic plasmonic flatband resonant metasurface. Insets, photo of the butterfly, Sasakia charonda, and the SEM image of its wing scale (above); the SEM image of the metasurface (below). Abstract The dazzling colors of butterfly wings and hummingbird feathers are not painted with pigments, but crafted by nature's invisible ...
Weihan Liu, Yao Liang, Din Ping Tsai
wiley   +1 more source

Enhanced Performance of AlGaN-Based Deep Ultraviolet Light-Emitting Diodes with Chirped Superlattice Electron Deceleration Layer

Nanoscale Research Letters, 2019
AlGaN-based deep ultraviolet (DUV) light-emitting diodes (LEDs) suffer from electron overflow and insufficient hole injection. In this paper, novel DUV LED structures with superlattice electron deceleration layer (SEDL) is proposed to decelerate the ...
Jiahui Hu, Jun Zhang, Yi Zhang, Huixue Zhang, Hanling Long, Qian Chen, Maocheng Shan, Shida Du, Jiangnan Dai, Changqing Chen   +9 more
doaj   +1 more source

High numerical aperture reflective deep ultraviolet Fourier ptychographic microscopy for nanofeature imaging

APL Photonics, 2022
Pushing the resolution limit to the nanoscale is a critical challenge for applying the reflective Fourier ptychographic microscopy (FPM) to metrologies for characterization of nanoscale features.
Kwan Seob Park, Yoon Sung Bae, Sang-Soo Choi, Martin Y. Sohn   +3 more
doaj   +1 more source

A Nonlinear Quantitative Model for Measuring Concentration Ratios From Raman Intensities

Journal of Raman Spectroscopy, EarlyView.
Estimating concentration from Raman intensity ratios is complicated by cross‐contributions from overlapping peaks, causing measured ratios to deviate from the linear behavior assumed in conventional quantitative models. This nonlinear method fully accounts for cross‐contributions, allowing estimation of concentration over several orders of magnitude ...
Joseph Razzell Hollis
wiley   +1 more source

Deep Ultraviolet Light-Emitting Diode Light Therapy for Fusobacterium nucleatum

, 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 ...
Junzo Nojima, Takahiro Yamasaki, Shunsuke Ito, Hidehiro Tsuneoka, Soichiro Fukuda, Katsuaki Mishima, Jun Nishikawa, Naoto Kubota, Yutaka Suehiro, Koji Harada, Ken-ichiro Otsuyama, Isao Sakaida, Tatsuya Takagi   +12 more
core   +1 more source

Broadband Mode Converter With Customizable Modal Ratio Leveraging Subwavelength Engineering for Advanced Multimode Silicon Photonics

Laser &Photonics Reviews, EarlyView.
This work introduces a customizable mode converter for multimode silicon photonics, enabling precise control over the conversion ratio between optical modes. The device operates across a broad wavelength range (1350–1700 nm) with 15 distinct conversion levels.
Raquel Fernández de Cabo, Alejandro Sánchez‐Sánchez, Paula Nuño Ruano, Roy Ronald Prosopio Galarza, Daniele Melati, Carlos Alonso‐Ramos, Aitor V. Velasco, David González‐Andrade   +7 more
wiley   +1 more source

Ultrafast Photovoltaic-Type Deep Ultraviolet Photodetectors Using Hybrid Zero-/Two-Dimensional Heterojunctions [PDF]

, 2019
Deep ultraviolet (DUV) photodetectors have wide-range applications in satellite communications, air purification, and missile-plume detection. However, the critical barriers for the currently available wide-band gap semiconductor film-based DUV ...
Li, Min, Dong, Mei, Luo, Jingting, Mei Dong (157261), Lin, Richeng, Wei Zheng (25452), Kan, Hao, Xu, Cunhua, Richeng Lin (4746228), YongQing Fu (6330425), Fu, Chen, Min Li (12799), Jingting Luo (6330422), Sun, Huibin, Huang, Feng, Zheng, Wei, Cunhua Xu (6038339), Fu, Yong Qing, Hao Kan (5745239), Feng Huang (62988), Chen Fu (165356), Huibin Sun (2160667)   +21 more
core   +1 more source

Dry Development of Dry Coated Sn‐Based Inorganic Resist for Defect‐Suppressed and High‐Resolution Patterning Process

Small Methods, EarlyView.
This work compares conventional wet development and asynchronously pulsed plasma development for Sn‐based inorganic resists under delay and AMC exposure. While wet development induces CD variation, scumming, and bridging, pulsed plasma enables selective removal of non‐exposed regions, mitigating contamination effects and achieving defect‐suppressed ...
Hee Ju Kim, Min Cheol Kim, Geun Young Yeom   +2 more
wiley   +1 more source

Advances in enhancing the light extraction efficiency of AlGaN-based deep ultraviolet light-emitting diodes via optical polarization

Frontiers in Physics
AlGaN-based deep ultraviolet light-emitting diodes (DUV-LEDs), as a novel solid-state ultraviolet light source, compared with the traditional ones, have competitive advantages over traditional UV sources such as mercury (Hg) pollution free, low energy ...
Dong-Xu Zhu, Dong-Xu Zhu, Gong Wang, Gong Wang, Yun-Fei Li, Yun-Fei Li   +5 more
doaj   +1 more source