期刊
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
卷 10, 期 12, 页码 900-904出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssr.201600289
关键词
metamaterials; topological transition; spatial dispersion; coated wires
资金
- Russian Science Foundation [15-12-20028]
- Russian Foundation for Basic Research [15-02-08957 A, 14-02-01008]
- China Scholarship Council [201508090124]
- Dynasty foundation
Employing nonlocal homogenization approach, we investigate the properties of a metamaterial consisting of parallel metallic wires with dielectric coating. We demonstrate that manipulation of dielectric contrast between wire dielectric shell and host material at fixed frequency results in dynamic switching of metamaterial dispersion regime from elliptic to the hyperbolic one, i.e. the topological transition takes place. It is proved that such transition can be induced by the variation of the metamaterial temperature. Our findings thus pave a way to the implementation of a tunable 'elliptic-hyperbolic' metamaterial. (C) 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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