Acoustic metamaterial exhibiting four different sign combinations of density and modulus

Yong Mun Seo, Jong Jin Park, Seung Hwan Lee, Choon Mahn Park, Chul Koo Kim, Sam-Hyeon Lee

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

We fabricated a double negative acoustic metamaterial which consisted of Helmholtz resonators and membranes. Experimental data on the transmission and dispersion relation are presented. The system exhibited three frequencies where the acoustic state makes sharp transitions from density negative (ρ-NG) to double negative (DNG), modulus negative (B-NG), and double positive (DPS) in sequence with the frequency. We observed a wide range of negative refractive indexes from -0.06 to -3.7 relative to air, which will allow for new acoustic transformation techniques.

Original languageEnglish
Article number023504
JournalJournal of Applied Physics
Volume111
Issue number2
DOIs
Publication statusPublished - 2012 Jan 15

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acoustics
Helmholtz resonators
refractivity
membranes
air

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Seo, Yong Mun ; Park, Jong Jin ; Lee, Seung Hwan ; Park, Choon Mahn ; Kim, Chul Koo ; Lee, Sam-Hyeon. / Acoustic metamaterial exhibiting four different sign combinations of density and modulus. In: Journal of Applied Physics. 2012 ; Vol. 111, No. 2.
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Acoustic metamaterial exhibiting four different sign combinations of density and modulus. / Seo, Yong Mun; Park, Jong Jin; Lee, Seung Hwan; Park, Choon Mahn; Kim, Chul Koo; Lee, Sam-Hyeon.

In: Journal of Applied Physics, Vol. 111, No. 2, 023504, 15.01.2012.

Research output: Contribution to journalArticle

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