气候变化领域集成服务门户(CCPortal): Demonstration of topological wireless power transfer

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DOI	10.1016/j.scib.2021.01.028
	Demonstration of topological wireless power transfer
	Zhang L.; Yang Y.; Jiang Z.; Chen Q.; Yan Q.; Wu Z.; Zhang B.; Huangfu J.; Chen H.
发表日期	2021
ISSN	20959273
起始页码	974
结束页码	980
卷号	66 期号:10
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
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
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207668
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
推荐引用方式 GB/T 7714	Zhang L.,Yang Y.,Jiang Z.,et al. Demonstration of topological wireless power transfer[J],2021,66(10).
APA	Zhang L..,Yang Y..,Jiang Z..,Chen Q..,Yan Q..,...&Chen H..(2021).Demonstration of topological wireless power transfer.Science Bulletin,66(10).
MLA	Zhang L.,et al."Demonstration of topological wireless power transfer".Science Bulletin 66.10(2021).