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Title: SH wave propagation in joined half-spaces composed of elastic metamaterials
Authors: Shi, X
Shu, H 
Zhou, H
Zhao, L
Liu, R
An, S
Zhu, J 
Issue Date: 2017
Publisher: American Institute of Physics
Source: Journal of applied physics, 2017, v. 122, no. 21, 215104 How to cite?
Journal: Journal of applied physics 
Abstract: Based on the effective-medium theory, the propagation of a shear horizontal (SH) wave in joined half-spaces composed of elastic metamaterials (EMMs) is investigated. From the dispersion relations, the effects of negative effective-medium parameters on the properties of a SH wave traveling near the interface are analyzed in detail. It is found that a SH wave can always appear and travel along the interface under specific effective-parameter combinations no matter whether the effective transverse wave velocity is imaginary or real. This is significantly different from the classical case (joined half-spaces composed of natural media), and the existence of these SH interfacial wave modes may have important impacts on EMM-based SH wave manipulation, especially wave isolation and object protection.
ISSN: 0021-8979
EISSN: 1089-7550
DOI: 10.1063/1.4994611
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