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Portable astronomical observation system based on large-aperture concentric-ring metalens
《Light(Science & Applications)》2025年第1期75-85,共11页Jianli Wang Yongting Deng Chengmiao Wang Yu Lin Yeming Han Junchi Liu Xiufeng Liu Hongwen Li Jan G.Korvink Yongbo Deng 
support of the National Natural Science Foundation of China(Nos.51875545,12133009,12122304);National Key Research and Development Program of China(2023YFF0722900);the Innovation Grant of Changchun Institute of Optics,Fine Mechanics and Physics(CIOMP);CAS Project for Young Scientists in Basic Research(No.YSBR-066);Science and Technology Development Program of Jilin Province(SKL202302020);an EU2020 FET grant(TiSuMR,737043);the DFG under grant KO 1883/20-1 Metacoils,and funding within their framework of the German Excellence Initiative under grant EXC 2082“3D Matter Made to Order”;from the VirtMat initiative“Virtual Materials Design”.
The core advantage of metalenses over traditional bulky lenses lies in their thin volume and lightweight.Nevertheless,as the application scenarios of metalenses extend to the macro-scale optical imaging field,a contra...
关键词：SYSTEM CONTRADICTION SIMPLICITY 
Formation mechanism of bright and dark concentric-ring pattern in dielectric barrier discharge
《Plasma Science and Technology》2024年第8期50-57,共8页李彩霞 冯建宇 王舒畅 李骋 冉俊霞 潘宇扬 董丽芳 
supported by National Natural Science Foundation of China(No.12075075);the Natural Science Foundation of Hebei Province,China(Nos.2020201016,A2018201154,A2023201012);Scientific Research and Innovation Team of Hebei University(No.IT2023B03)。
In this work,a bright and dark concentric-ring pattern is reported in a dielectric barrier discharge for the first time.The spatiotemporal dynamics of the bright and dark concentric-ring pattern are investigated with ...
关键词：dielectric barrier discharge(DBD) concentric-ring pattern spatio-temporal dynamics optical emission spectroscopy wall charges 
Modelling of Wideband Concentric Ring Frequency Selective Surface for 5G Devices
《Computers, Materials & Continua》2023年第1期341-361,共21页Ankush Kapoor Pradeep Kumar Ranjan Mishra 
Frequency selective surfaces(FSSs)play an important role in wireless systems as these can be used as filters,in isolating the unwanted radiation,in microstrip patch antennas for improving the performance of these ante...
关键词：Spatial filters double concentric ring frequency selective surface(DCRFSS) angle of incidence finite element method(FEM) polarization angles 
Various concentric-ring patterns formed in a water-anode glow discharge operated at atmospheric pressure被引量：1
《Plasma Science and Technology》2022年第5期169-175,共7页Kaiyue WU Na ZHAO Qiming NIU Jiacun WU Shuai ZHOU Pengying JIA Xuechen LI 
financially supported by National Natural Science Foundation of China(Nos.11875121 and 51977057);Natural Science Interdisciplinary Research Program of Hebei University(Nos.DXK201908 and DXK202011);Natural Science Foundation of Hebei Province,China(Nos.A2020201025 and A2019201100);the financial support from Post-Graduate’s Innovation Fund Project of Hebei Province(Nos.CXZZBS2019023 and CXZZBS2019029);Post-Graduate’s Innovation Fund Project of Hebei University(Nos.HBU2021ss063 and HBU2021bs011)。
Pattern formation is a very interesting phenomenon formed above a water anode in atmospheric pressure glow discharge.Up to now,concentric-ring patterns only less than four rings have been observed in experiments.In th...
关键词：atmospheric pressure glow discharge pattern formation water anode concentric-ring pattern autocatalytic reaction model 
Frequencies of circular plate with concentric ring and elastic edge support
《Frontiers of Mechanical Engineering》2014年第2期168-176,共9页Lokavarapu Bhaskara RAO Chellapilla Kameswara RAO 
Exact solutions for the flexural vibrations of circular plates having elastic edge conditions along with rigid concentric ring support have been presented in this paper. Values of frequency parameter for the considere...
关键词：circular plate frequency elastic edge rigid ring mode switching 
Concentric-Ring Patterns in a Helium Dielectric Barrier Discharge at Atmospheric Pressure被引量：1
《Chinese Physics Letters》2007年第7期1992-1994,共3页尚万里 王德真 
Supported by the National Natural Science Foundation of China under Grant Nos 50537020 and 50528707.
We perform the theoretical simulation of the concentric-ring patterns between two parallel electrodes covered with thin dielectric layers within the scope of a two-dimensional diffusion-drift model at atmospheric pres...
关键词：GLOW-DISCHARGES SYSTEM SPOTS GAS 
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