Results 11 to 20 of about 7,261,541 (287)

The Topological Origin of Boundary Charges at Edges of One-Dimensional Crystals without Inversion Symmetry

Photonics, 2023
We report the edge states and non-zero boundary charges in one-dimensional photonic crystals (1D PhCs) without inversion symmetry. In contrast to common 1D systems, we show that edge states corresponding to non-zero boundary charges do exist in these ...
Pengdong Shi, Xingchao Qi, Yufu Liu, Xianjun Wang, Langlang Xiong, Xunya Jiang   +5 more
doaj   +1 more source

Design and simulation of an S-band compact multi-beam klystron

AIP Advances, 2023
The miniaturization and high power of klystron are the main concerns of accelerators. Multi-beam klystron (MBK) can accommodate higher power and a lower operating voltage than single-beam klystrons, significantly reducing volume and weight.
Xiaobo Lin, Rui Zhang, Li Zuo, Quangui Chao, Bingchuan Xie, Zhicheng Wang, Zhihui Geng, Yunfeng Liao, Xiudong Yang   +8 more
doaj   +1 more source

Design and analysis of the output windows of a doorknob structure for high-power P-band klystron

AIP Advances, 2022
This article presents the design, analysis, and simulation for the klystron coaxial radio frequency (RF) output windows. Three new RF windows (Type-2, 3, and 4) are proposed based on the coaxial RF window with a doorknob structure (Type-1) to improve its
Quangui Chao, Rui Zhang, Yong Wang, Bingchuan Xie, Xiaobo Lin   +4 more
doaj   +1 more source

Discharge Performance of the Non-rechargeable Lithium-air Batteries with a Waterproof and Breathable Film in an Open Environment

Electrochemistry, 2022
Due to its high energy density, lithium-air battery has been one of the research hotspots. However, there are still many issues that need to be addressed, especially when working in an open environment.
Xiaohua XIE, Zhongfa YANG, Jian ZHANG, Baojia XIA   +3 more
doaj   +1 more source

Simulation of a multistage depressed collector with secondary electron emission for a MW-class gyrotron at 170 GHz

AIP Advances, 2021
This paper presents the simulation results of a multistage depressed collector for a MW-class gyrotron. The energy distribution of spent electrons is obtained by a beam–wave interaction code.
Kai Wang, Qianzhong Xue, Shan Zhang, Ding Zhao, Lianzheng Zhang   +4 more
doaj   +1 more source

High circadian stimulus lighting therapy for depression: Meta-analysis of clinical trials

Frontiers in Neuroscience, 2022
Although bright light therapy (BLT) has been widely used in the clinical treatment of depression, the antidepressant effect of BLT is not well understood.
Li Zhou, Li Zhou, Li Zhou, Dandan Hou, Yang Wang, Sicong Zhou, Yandan Lin, Yandan Lin, Yandan Lin, Yandan Lin   +9 more
doaj   +1 more source

Gbps Long-Distance Real-Time Visible Light Communications Using a High-Bandwidth GaN-Based Micro-LED

IEEE Photonics Journal, 2017
In this investigation, we experimentally demonstrated a high-speed Gbps long-distance real-time visible light communication system based on non-return-to-zero on-off keying modulation by using a high-bandwidth Gallium nitride-based micro-LED with a ...
Xiaoyan Liu, Pengfei Tian, Zixian Wei, Suyu Yi, Yuxin Huang, Xiaolin Zhou, Zhi-Jun Qiu, Laigui Hu, Zhilai Fang, Chunxiao Cong, Lirong Zheng, Ran Liu   +11 more
doaj   +1 more source

Theoretical analysis of a 0.22 THz multistage confocal waveguide gyro-TWT with circle-sector-shaped electron beam

AIP Advances, 2021
In order to improve the beam–wave interaction efficiency, a special circle-sector-shaped electron beam is designed and simulated in the confocal waveguide gyrotron traveling-wave tube (gyro-TWT).
Jie Yang, Shouxi Xu, Yong Wang, Xiaoyan Wang   +3 more
doaj   +1 more source

Study the Effect of eHMI Projection Distance and Contrast on People Acceptance in Blind-Spot Detection Scenario

Applied Sciences, 2022
External human-machine interaction (eHMI) road projections are a new feature for automotive lighting to improve vehicle communication with other road users. These modalities are used to draw users’ attention and awareness to specific situations. However,
Ali Hassan Shah, Xiaodong Sun, Yandan Lin   +2 more
doaj   +1 more source

Airports at Risk: The Impact of Information Sources on Security Decisions [PDF]

, 2012
Security decisions in high risk organizations such as airports involve obtaining ongoing and frequent information about potential threats. Utilizing questionnaire survey data from a sample of airport employees in European Airports across the continent ...
A Angenendt, A Kirschenbaum, A Kirschenbaum, AD Blay, Alan Avi Kirschenbaum, C Butts, C Rapaport, Carmit Rapaport, Coen Van Gulijk, D Huang, D Krackhardt, DM Varda, J Leach, LS Morris, M Willemyns, Michele Mariani, RB Haynes, RE Kraut, S Corbacioglu, Sharon Lubasz, SM Crampton, T Herath, WJ Keegan   +22 more
core   +1 more source