globalchange  > 气候变化与战略
DOI: 10.1016/j.scib.2021.01.028
论文题名:
Demonstration of topological wireless power transfer
作者: Zhang L.; Yang Y.; Jiang Z.; Chen Q.; Yan Q.; Wu Z.; Zhang B.; Huangfu J.; Chen H.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2021
卷: 66, 期:10
起始页码: 974
结束页码: 980
语种: 英语
中文关键词: Exceptional point ; Su-Schrieffer-Heeger model ; Topological metamaterials ; Wireless power transfer
英文关键词: Electronics industry ; Energy transfer ; Magnetic resonance ; Resonators ; Topological insulators ; Topology ; Boundary potentials ; Chiral symmetry ; Coil configurations ; Exceptional points ; Fabrication imperfections ; High-energy transfers ; Near-field coupling ; Wireless power transfer (WPT) ; Inductive power transmission
英文摘要: Recent advances in non-radiative wireless power transfer (WPT) technique essentially relying on magnetic resonance and near-field coupling have successfully enabled a wide range of applications. However, WPT systems based on double resonators are severely limited to short- or mid-range distance, due to the deteriorating efficiency and power with long transfer distance. WPT systems based on multi-relay resonators can overcome this problem, which, however, suffer from sensitivity to perturbations and fabrication imperfections. Here, we experimentally demonstrate a concept of topological wireless power transfer (TWPT), where energy is transferred efficiently via the near-field coupling between two topological edge states localized at the ends of a one-dimensional radiowave topological insulator. Such a TWPT system can be modelled as a parity-time-symmetric Su-Schrieffer-Heeger (SSH) chain with complex boundary potentials. Besides, the coil configurations are judiciously designed, which significantly suppress the unwanted cross-couplings between nonadjacent coils that could break the chiral symmetry of the SSH chain. By tuning the inter- and intra-cell coupling strengths, we theoretically and experimentally demonstrate high energy transfer efficiency near the exceptional point of the topological edge states, even in the presence of disorder. The combination of topological metamaterials, non-Hermitian physics, and WPT techniques could promise a variety of robust, efficient WPT applications over long distances in electronics, transportation, and industry. © 2021 Science China Press
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170502
Appears in Collections:气候变化与战略

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作者单位: Interdisciplinary Center for Quantum Information, State Key Laboratory of Modern Optical Instrumentation, College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, 310027, China; ZJU-Hangzhou Global Science and Technology Innovation Center, Key Laboratory of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang, Zhejiang University, Hangzhou, 310027, China; International Joint Innovation Center, ZJU-UIUC Institute, Zhejiang University, Haining, 314400, China; Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore; Centre for Disruptive Photonic Technologies, The Photonics Institute, Nanyang Technological University, Singapore, 639798, Singapore; Laboratory of Applied Research on Electromagnetics (ARE), Zhejiang University, Hangzhou, 310027, China

Recommended Citation:
Zhang L.,Yang Y.,Jiang Z.,et al. Demonstration of topological wireless power transfer[J]. Science Bulletin,2021-01-01,66(10)
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