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Rainbow Trapping with Long Oscillation Lifetimes in Gradient Magnetoinductive Metasurfaces

Xu, Zhixia and Shi, Jun and Davis, Robert J. and Yin, Xiaoxing and Sievenpiper, Daniel F. (2019) Rainbow Trapping with Long Oscillation Lifetimes in Gradient Magnetoinductive Metasurfaces. Physical Review Applied, 12 (2). Art. No. 024043. ISSN 2331-7019.

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We report a gradient metasurface design at microwave bands as an elegant approach to realize the goal of “rainbow trapping” for the storage of waves involving wave localization and absorption phenomena. A longitudinally placed coplanar waveguide is loaded with gradient metasurfaces on both sides, where split-ring resonators (SRRs) are the basic cell. The same SRRs are arranged along the transverse direction to establish magnetoinductive channels. Waves of different frequencies are coupled to corresponding SRRs at different positions in metasurfaces. Resonant trapping with a long oscillation life time enhances the absorption caused by inherent losses of the materials, thereby suppressing reflections. Both simulations and measurements verify the existence of “rainbow trapping.” The proposed strategy enhances the interaction between waves and matter, opening an avenue for further component designs, including absorptive filters, multiplexers, and buffers.

Item Type:Article
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URLURL TypeDescription
Xu, Zhixia0000-0002-9833-0993
Shi, Jun0000-0003-1647-7762
Additional Information:© 2019 American Physical Society. Received 6 June 2019; revised manuscript received 22 July 2019; published 21 August 2019. This work was supported by National Natural Science Foundation of China (Grants No. 61771127 and No. 61427801), Scientific Research Foundation of Graduate School of Southeast University (Grant No. YBJJ1814), and Postgraduate Research & Practice Innovation Program of Jiangsu Province (Grant No. KYCX18_0098) as well as AFOSR Grant No. FA9550-16-1-0093. Zhixia Xu and Jun Shi contributed equally to this work. The authors also acknowledge useful discussions with Shufan Wang and Yun Zhou.
Funding AgencyGrant Number
National Natural Science Foundation of China61771127
National Natural Science Foundation of China61427801
Southeast UniversityYBJJ1814
Jiangsu ProvinceKYCX18_0098
Air Force Office of Scientific Research (AFOSR)FA9550-16-1-0093
Issue or Number:2
Record Number:CaltechAUTHORS:20190821-093944165
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98069
Deposited By: Tony Diaz
Deposited On:21 Aug 2019 18:41
Last Modified:03 Oct 2019 21:37

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