Compressibility-near-zero acoustic metamaterial

Norbert Cselyuszka, Milan Sečujski, Vesna Crnojević-Bengin

Research output: Contribution to journalArticlepeer-review


This letter theoretically analyzes and experimentally demonstrates a novel class of compressibility-near-zero (CNZ) acoustic metamaterials, achieved by using resonant-type metamaterials, namely the Helmholtz resonator. We first present a closed analytical formula for the effective compressibility of the proposed unit cell and then show that two frequencies exist which may support CNZ propagation. We demonstrate how the choice of the actual operating CNZ frequency depends on the properties of the host and finally experimentally verify CNZ propagation of acoustic waves.
Original languageEnglish
Pages (from-to)1153
Number of pages1156
JournalPhysics Letters A
Issue number16-17
Publication statusPublished - 14 Mar 2014
Externally publishedYes


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