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1,805 results on '"Chen, Zhi-Gang"'

1. A free-space coupled, large-active-area superconducting microstrip single-photon detector for photon-counting time-of-flight imaging

Author

Wang, Yu-Ze, Zhang, Wei-Jun, Zhang, Xing-Yu, Xu, Guang-Zhao, Xiong, Jia-Min, Chen, Zhi-Gang, Hong, Yi-Yu, Liu, Xiao-Yu, Yuan, Pu-Sheng, Wu, Ling, Wang, Zhen, and You, Li-Xing

Subjects
Physics - Applied Physics
Abstract

Numerous applications at the photon-starved regime require a free-space coupling singlephoton detector with a large active area, low dark count rate (DCR), and superior time resolutions. Here,we developed a superconducting microstrip single-photon detector (SMSPD), with a large active area of 260 um in diameter, a DCR of ~5 kcps, and a low time jitter of ~171 ps, operated at near-infrared of 1550 nm. As a demonstration, we applied the detector to a single-pixel galvanometer scanning system and successfully reconstructed object information in depth and intensity using a time-correlated photon counting technology., Comment: 12 pages, 6 figures

Published
2024

2. Frontiers in high entropy alloys and high entropy functional materials

Author

Zhang, Wen-Tao, Wang, Xue-Qian, Zhang, Feng-Qi, Cui, Xiao-Ya, Fan, Bing-Bing, Guo, Jia-Ming, Guo, Zhi-Min, Huang, Rui, Huang, Wen, Li, Xu-Bo, Li, Meng-Ru, Ma, Yan, Shen, Zhi-Hua, Sun, Yong-Gang, Wang, De-Zhuang, Wang, Fei-Yang, Wang, Li-Qiang, Wang, Nan, Wang, Tian-Li, Wang, Wei, Wang, Xiao-Yang, Wang, Yi-Han, Yu, Fu-Jie, Yin, Yu-Zhen, Zhang, Ling-Kun, Zhang, Yi, Zhang, Jian-Yang, Zhao, Qi, Zhao, Yu-Ping, Zhu, Xin-Dong, Sohail, Yasir, Chen, Ya-Nan, Feng, Tao, Gao, Qi-Long, He, Hai-Yan, Huang, Yong-Jiang, Jiao, Zeng-Bao, Ji, Hua, Jiang, Yao, Li, Qiang, Li, Xiao-Ming, Liao, Wei-Bing, Lin, Huai-Jun, Liu, Hui, Liu, Qi, Liu, Qing-Feng, Liu, Wei-Di, Liu, Xiong-Jun, Lu, Yang, Lu, Yi-Ping, Ma, Wen, Miao, Xue-Fei, Pan, Jie, Wang, Qing, Wu, Hong-Hui, Wu, Yuan, Yang, Tao, Yang, Wei-Ming, Yu, Qian, Zhang, Jin-Yu, Chen, Zhi-Gang, Mao, Liang, Ren, Yang, Shen, Bao-Long, Wang, Xun-Li, Jia, Zhe, Zhu, He, Wu, Zhen-Duo, and Lan, Si

Published
2024
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5. Roadmap on energy harvesting materials

Author

Pecunia, Vincenzo, Silva, S Ravi P, Phillips, Jamie D, Artegiani, Elisa, Romeo, Alessandro, Shim, Hongjae, Park, Jongsung, Kim, Jin Hyeok, Yun, Jae Sung, Welch, Gregory C, Larson, Bryon W, Creran, Myles, Laventure, Audrey, Sasitharan, Kezia, Flores-Diaz, Natalie, Freitag, Marina, Xu, Jie, Brown, Thomas M, Li, Benxuan, Wang, Yiwen, Li, Zhe, Hou, Bo, Hamadani, Behrang H, Defay, Emmanuel, Kovacova, Veronika, Glinsek, Sebastjan, Kar-Narayan, Sohini, Bai, Yang, Bin Kim, Da, Cho, Yong Soo, Žukauskaitė, Agnė, Barth, Stephan, Fan, Feng Ru, Wu, Wenzhuo, Costa, Pedro, del Campo, Javier, Lanceros-Mendez, Senentxu, Khanbareh, Hamideh, Wang, Zhong Lin, Pu, Xiong, Pan, Caofeng, Zhang, Renyun, Xu, Jing, Zhao, Xun, Zhou, Yihao, Chen, Guorui, Tat, Trinny, Ock, Il Woo, Chen, Jun, Graham, Sontyana Adonijah, Yu, Jae Su, Huang, Ling-Zhi, Li, Dan-Dan, Ma, Ming-Guo, Luo, Jikui, Jiang, Feng, Lee, Pooi See, Dudem, Bhaskar, Vivekananthan, Venkateswaran, Kanatzidis, Mercouri G, Xie, Hongyao, Shi, Xiao-Lei, Chen, Zhi-Gang, Riss, Alexander, Parzer, Michael, Garmroudi, Fabian, Bauer, Ernst, Zavanelli, Duncan, Brod, Madison K, Al Malki, Muath, Snyder, G Jeffrey, Kovnir, Kirill, Kauzlarich, Susan M, Uher, Ctirad, Lan, Jinle, Lin, Yuan-Hua, Fonseca, Luis, Morata, Alex, Martin-Gonzalez, Marisol, Pennelli, Giovanni, Berthebaud, David, Mori, Takao, Quinn, Robert J, Bos, Jan-Willem G, Candolfi, Christophe, Gougeon, Patrick, Gall, Philippe, Lenoir, Bertrand, Venkateshvaran, Deepak, Kaestner, Bernd, Zhao, Yunshan, Zhang, Gang, Nonoguchi, Yoshiyuki, Schroeder, Bob C, Bilotti, Emiliano, Menon, Akanksha K, Urban, Jeffrey J, Fenwick, Oliver, Asker, Ceyla, and Talin, A Alec

Subjects
Engineering, Materials Engineering, Affordable and Clean Energy, energy harvesting materials, photovoltaics, thermoelectric energy harvesting, piezoelectric energy harvesting, triboelectric energy harvesting, radiofrequency energy harvesting, sustainability, Macromolecular and materials chemistry, Physical chemistry, Materials engineering
Abstract

Ambient energy harvesting has great potential to contribute to sustainable development and address growing environmental challenges. Converting waste energy from energy-intensive processes and systems (e.g. combustion engines and furnaces) is crucial to reducing their environmental impact and achieving net-zero emissions. Compact energy harvesters will also be key to powering the exponentially growing smart devices ecosystem that is part of the Internet of Things, thus enabling futuristic applications that can improve our quality of life (e.g. smart homes, smart cities, smart manufacturing, and smart healthcare). To achieve these goals, innovative materials are needed to efficiently convert ambient energy into electricity through various physical mechanisms, such as the photovoltaic effect, thermoelectricity, piezoelectricity, triboelectricity, and radiofrequency wireless power transfer. By bringing together the perspectives of experts in various types of energy harvesting materials, this Roadmap provides extensive insights into recent advances and present challenges in the field. Additionally, the Roadmap analyses the key performance metrics of these technologies in relation to their ultimate energy conversion limits. Building on these insights, the Roadmap outlines promising directions for future research to fully harness the potential of energy harvesting materials for green energy anytime, anywhere.

Published
2023

6. Characterization of a Superconducting Microstrip Single-Photon Detector Shunted with an External Resistor

Author

Wang, Yu-Ze, Zhang, Wei-Jun, Xu, Guang-Zhao, Xiong, Jia-Min, Fan, Dong-Hui, Chen, Zhi-Gang, Zhang, Xing-Yu, Wang, Zhen, and You, Li-Xing

Subjects
Physics - Instrumentation and Detectors, Physics - Applied Physics
Abstract

A superconducting microstrip single-photon detector (SMSPD) generally requires a shunt resistor to avoid latching, caused by its high current-carrying capacity and low kinetic inductance. Here, the effect of the shunt resistor on the behaviors of microbridge SMSPDs was investigated. We analyzed the change in equivalent switching current at different shunt resistances in two ways and determined the operating current range using intrinsic dark count rate (iDCR) curves. We observed that the reduction in shunt resistance can increase the operating current range, which helps to improve the internal detection efficiency (IDE) and reduce the iDCR. However, the reduction in the shunt resistance can reduce the pulse amplitude and increase the pulse decay time, which can degrade the timing jitter and count rate performance of the SMSPD. The trends of the experimental results can be qualitatively reproduced using a circuit model for an SMSPD with a shunt resistor, which provides useful information for the selection of shunt resistors. Furthermore, we report the improved detection performance of a helium-ion-irradiated SMSPD shunted with a small resistance of 5.2 {\Omega}. We observed a weak IDE saturation with a bias current at a wavelength up to 2000 nm and a nonlinear relation between detection current and photon energy., Comment: 13 pages, 8 figures, 1 table

Published
2023
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7. High-efficiency broadband fiber-to-chip coupler using a 3D nanoprinting microfiber

Author

Fan, Dong-Hui, Zhang, Xing-Yu, Zhang, Wei-Jun, Ma, Ruo-Yan, Xiong, Jia-Min, Wang, Yu-Ze, Chen, Zhi-Gang, Wang, Zhen, and You, Li-Xing

Subjects
Physics - Optics, Physics - Applied Physics
Abstract

We propose a method for coupling a tapered optical fiber to an inverted tapered SiN waveguide by fabricating a microfiber using 3D nanoprinting lithography. The microfiber consists of three parts: a tapered cladding cap, an S-bend, and a straight part, all composed of high-refractive-index material. Light is adiabatically coupled from the tapered fiber to the printed microfiber through the cladding cap. The light is then transmitted through the S-bend and the straight part with low loss and is finally coupled to the waveguide through the evanescent field. In the simulation, our design can achieve a high coupling efficiency (TE mode) of ~97% at a wavelength of 1542 nm with a wide bandwidth of ~768 nm at the 1-dB cut-off criterion., Comment: 14 pages, 8 figures

Published
2023
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42. Preface

Author

Cao, Peng, primary, Chen, Zhi-Gang, additional, and Xia, Zhiguo, additional

Published
2023
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44. List of contributors

Author

Bhardwaj, Preetam, primary, Cao, Peng, additional, Chen, Zhi-Gang, additional, Cheng, Fangyi, additional, Fiedler, Holger, additional, Grace, Andrews Nirmala, additional, Hong, Min, additional, Hu, Tao, additional, Huang, Saifang, additional, Kennedy, John, additional, Leveneur, Jérôme, additional, Li, Meng, additional, Liu, Wei-Di, additional, Malathi, A. Christina Josephine, additional, Pu, Yuguang, additional, Qiao, Jianwei, additional, Raghavan, Vimala, additional, Marimuthu, Sathish, additional, Shi, Xiao-Lei, additional, Song, Xin, additional, Venkateshalu, Sandhya, additional, Xia, Zhiguo, additional, Xu, Shengduo, additional, Yang, Zhiyu, additional, Zhang, Li, additional, Zhang, Yudong, additional, and Zhou, Xinquan, additional

Published
2023
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