Method for retrieving effective properties of locally resonant acoustic metamaterials

Vladimir Fokin, Muralidhar Ambati, Cheng Sun, and Xiang Zhang
Phys. Rev. B 76, 144302 – Published 4 October 2007

Abstract

Acoustic metamaterials can be described by effective material properties such as mass density and modulus. We have developed a method to extract these effective properties from reflection and transmission coefficients, which can be measured experimentally. The dependency of effective properties on the positions of the boundaries of the acoustic metamaterial is discussed, and a proper procedure to determine the boundaries is presented. This retrieval method is used to analyze various acoustic metamaterials, and metamaterials with negative effective properties are reported.

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  • Received 27 April 2007

DOI:https://doi.org/10.1103/PhysRevB.76.144302

©2007 American Physical Society

Authors & Affiliations

Vladimir Fokin, Muralidhar Ambati, Cheng Sun, and Xiang Zhang*

  • Nano-scale Science and Engineering Center, University of California, 5130 Etcheverry Hall, Berkeley, California 94720, USA

  • *Corresponding author; xiang@berkeley.edu

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Issue

Vol. 76, Iss. 14 — 1 October 2007

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