Extreme acoustic metamaterial by coiling up space

Z. Liang, Jensen Tsan Hang Li

Research output: Contribution to journalArticlepeer-review

478 Citations (Scopus)

Abstract

We show that by coiling up space using curled perforations, a two-dimensional acoustic metamaterial can be constructed to give a frequency dispersive spectrum of extreme constitutive parameters, including double negativity, a density near zero, and a large refractive index. Such an approach has band foldings at the effective medium regime without using local resonating subwavelength structures, while the principle can be easily generalized to three dimensions. Negative refraction with a double negative prism and tunneling with a density-near-zero metamaterial are numerically demonstrated.
Original languageEnglish
Article number114301
Pages (from-to)n/a
JournalPhysical Review Letters
Volume108
Issue number11
DOIs
Publication statusPublished - 16 Mar 2012

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