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Start Over Author "Zhang, Weili" Publication Type Academic Journals
1,179 results on '"Zhang, Weili"'

12. Temporally deuterogenic plasmonic vortices

Author

Yuan Xinyao, Xu Quan, Lang Yuanhao, Yao Zhibo, Jiang Xiaohan, Li Yanfeng, Zhang Xueqian, Han Jiaguang, and Zhang Weili

Subjects
deuterogenic plasmonic vortices, spatiotemporal dynamics, orbital angular momentum, Physics, QC1-999
Abstract

Over the past decade, orbital angular momentum has garnered considerable interest in the field of plasmonics owing to the emergence of surface-confined vortices, known as plasmonic vortices. Significant progress has been made in the generation and manipulation of plasmonic vortices, which broadly unveil the natures of plasmonic spin–orbit coupling and provide accessible means for light–matter interactions. However, traditional characterizations in the frequency domain miss some detailed information on the plasmonic vortex evolution process. Herein, an exotic spin–orbit coupling phenomenon is demonstrated. More specifically, we theoretically investigated and experimentally verified a temporally deuterogenic vortex mode, which can be observed only in the time domain and interferes destructively in the intensity field. The spatiotemporal evolution of this concomitant vortex can be tailored with different designs and incident beams. This work extends the fundamental understanding of plasmonic spin–orbit coupling and provides a unique optical force manipulation strategy, which may fuel plasmonic research and applications in the near future.

Published
2024
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33. Research on submarine underwater acoustic effectiveness against airborne sonar

Author

KANG Le, SUN Baosan, ZHANG Weili

Subjects
underwater acoustic countermeasure, sonobuoy, dipping sonar, combat effectiveness, Military Science
Abstract

To get the best strategy of submarine underwater acoustic countermeasure against active/passive airborne sonar in normal conditions, this paper constructs the underwater acoustic environment model, sonar detection model and submarine underwater acoustic countermeasure model, proposes an airborne sonar information processing model considering acoustic contact, tracking, positioning and recognition processing, and simulates and analyzes the effectiveness of different submarine underwater acoustic countermeasure in the conditions of sonar contacting submarines. The results show that it is more effective to reduce the radiated noise than to increase the speed against the passive sonar. Submarines should adopt greater depth, minimum noise speed and shortest distance separation. If the submarine recognizes the position of the passive sonar buoy based on electronic reconnaissance or listening to the sound of sonobuoy impacting water, it can insert the bubble shell to worsen the common view condition of the passive buoy array, which avoids tracking and positioning and improves the effectiveness of countermeasures. It is the best strategy for the submarine to counter the active sonar, change the course, and release the wideband jammers and decoys at a high speed.The bubble shell can be released to worsen the sonar tracking, positioning and recognition environment while submarine fleeing, which providing conditions for the submarine to extend the distance from the sonar. The research in this paper can provide a simulation environment and decision-making reference for submarine underwater acoustic countermeasure active/passive airborne sonar.

Published
2023
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34. Association of ARHGEF7 genetic variants with intracranial aneurysm

Author

WU Yiyi, ZHANG Mei, YANG Yunyun, LI Yaqiang, LI Jing, HE Jiale, ZHANG Weili

Subjects
rho guanine nucleotide exchange factor 7 (arhgef7), genetic variants, intracranial aneurysm, disease risk, Medicine
Abstract

Objective To identify the relationship between Rho guanine nucleotide exchange factor 7 (ARHGEF7) genetic variants and the formation and rupture risk of intracranial aneurysms. Methods Ten variants of the ARHGEF7 were detected in a case-control study which included 121 patients with intracranial aneurysms (including 41 unruptured and 80 ruptured patients) and 155 healthy controls. The relationship between variants and occurrence and rupture risk of intracranial aneurysms was examined by multivariate logistic regression model. Results After adjustment for age, sex, and traditional cardiovascular risk factors, the rs4145274GA genotype was associated with a decreased rupture risk of intracranial aneurysms as compared with rs4145274GG genotype, and odds ratio was 0.24[95% confidence interval (CI):0.09~0.69, P＜0.05]. The rs1555751CT genotype was also associated with a decreased rupture risk of intracranial aneurysms as compared with rs1555751CC genotype, and odds ratio was 0.17(95% CI: 0.05~0.63, P＜0.05). The combined effect rs4145274 and rs1555751 suggested that the patients with an increased genetic risk score had a lower rupture risk of intracranial aneurysms, and the odds ratio was 0.14(95% CI: 0.04~0.55, P＜0.05). Conclusions The study indicates that ARHGEF7 genetic variants potentially serve as potential genetic markers for the risk evaluation of ruptured intracranial aneurysms.

Published
2023
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38. Pegmolesatide for the treatment of anemia in patients undergoing dialysis: a randomized clinical trial

Author

Zhang, Ping, Jiang, Yan, Xu, Chunping, Zhou, Linghui, Zheng, Hongguang, Xie, Deqiong, Guo, Minghao, Huang, Xiangyang, Lu, Guoyuan, Jiang, Hongli, Qiu, Hongyu, Liu, Bicheng, Li, Shaomei, Chen, Qinkai, Xia, Yu'ou, Sun, Bengui, Yang, Xiao, Zhang, Shiying, Du, Shutong, Sun, Mindan, Chen, Menghua, Zhong, Aimin, Wang, Xiaoling, Zhao, Zhanzheng, Zhou, Hua, Li, Guisen, Ren, Yueqin, Luo, Qun, Yang, Aicheng, Luo, Ping, Tang, Shuifu, Xu, Chengyun, Wang, Qin, Wang, Xiaoxia, Yan, Tiekun, He, Wei, Qin, Shuguang, Zhang, Weili, Lv, Lu, Wang, Cheng, Liu, Hong, Li, Jing, Wu, Qiong, Pan, Chao, Li, Chuan, He, Liangliang, and Chen, Jianghua

Published
2023
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45. Multichannel terahertz quasi-perfect vortex beams generation enabled by multifunctional metasurfaces

Author

Liu Wanying, Yang Quanlong, Xu Quan, Jiang Xiaohan, Wu Tong, Gu Jianqiang, Han Jiaguang, and Zhang Weili

Subjects
dielectric metasurfaces, multifunction devices, quasi perfect vortex beam, terahertz, Physics, QC1-999
Abstract

Vortex beams carrying orbital angular momentum (OAM) open a new perspective in various terahertz research. Multichannel and divergence controllable terahertz vortex beam generation holds the key to promoting the development of OAM related terahertz research. Here, we introduced and experimentally demonstrated quasi-perfect vortex beam (Q-PVB) with a controllable divergence angle independent of the topological charge and multichannel Q-PVBs generation with all-dielectric multifunctional metasurfaces. By superimposing specific phase functions together into the metasurfaces, multiple vortex beams and four-channel Q-PVBs with different topological charges are generated as well as focused at separated positions. High resolution characterization of terahertz electric field shows the good quality and broadband properties of Q-PVBs. Interestingly, compared with conventional perfect vortex beam; Q-PVB displays a smaller divergence angle and thinner ring width. The metasurfaces proposed here provide a promising avenue to realize multichannel vortex beams generation in compact terahertz systems; benefiting OAM related researches such as mode division multiplexing, vortex beam related plasmonic enhancement and spinning objective detection.

Published
2022
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48. Pepper variome reveals the history and key loci associated with fruit domestication and diversification

Author

Cao, Yacong, Zhang, Kang, Yu, Hailong, Chen, Shumin, Xu, Donghui, Zhao, Hong, Zhang, Zhenghai, Yang, Yinqing, Gu, Xiaozhen, Liu, Xinyan, Wang, Haiping, Jing, Yaxin, Mei, Yajie, Wang, Xiang, Lefebvre, Véronique, Zhang, Weili, Jin, Yuan, An, Dongliang, Wang, Risheng, Bosland, Paul, Li, Xixiang, Paran, Ilan, Zhang, Baoxi, Giuliano, Giovanni, Wang, Lihao, and Cheng, Feng

Published
2022
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