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Tunable meta-atom using liquid metal embedded in stretchable polymer

TitleTunable meta-atom using liquid metal embedded in stretchable polymer
Publication TypeJournal Article
Year of Publication2015
AuthorsLiu, P, Yang, SM, Jain, A, Wang, QG, Jiang, HW, Song, JM, Koschny, T, Soukoulis, CM, Dong, L
JournalJournal of Applied Physics
Date Published07
Type of ArticleArticle
ISBN Number0021-8979
Accession NumberWOS:000357873100027
Keywordsantennas, cloaking, composite, devices, electronics, matrix, metamaterials, silicon integrated-circuits, split-ring resonators, terahertz, transistors

Reconfigurable metamaterials have great potential to alleviate complications involved in using passive metamaterials to realize emerging electromagnetic functions, such as dynamical filtering, sensing, and cloaking. This paper presents a new type of tunable meta-atoms in the X-band frequency range (8-12 GHz) toward reconfigurable metamaterials. The meta-atom is made of all flexible materials compliant to the surface of an interaction object. It uses a liquid metal-based split-ring resonator as its core constituent embedded in a highly flexible elastomer. We demonstrate that simple mechanical stretching of the meta-atom can lead to the great flexibility in reconfiguring its resonance frequency continuously over more than 70% of the X-band frequency range. The presented meta-atom technique provides a simple approach to dynamically tune response characteristics of metamaterials over a broad frequency range. (C) 2015 AIP Publishing LLC.

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