Acoustic metamaterial with negative modulus

Sam Hyeon Lee, Choon Mahn Park, Yong Mun Seo, Zhi Guo Wang, Chul Koo Kim

Research output: Contribution to journalArticlepeer-review

257 Citations (Scopus)


We present experimental and theoretical results on an acoustic metamaterial that exhibits a negative effective modulus in a frequency range from 0 to 450Hz. A one-dimensional acoustic metamaterial with an array of side holes on a tube was fabricated. We observed that acoustic waves above 450Hz propagated well in this structure, but no sound below 450Hz passed through. The frequency characteristics of the metamaterial has the same form as that of the permittivity in metals due to the plasma oscillation. We also provide a theory to explain the experimental results.

Original languageEnglish
Article number175704
JournalJournal of Physics Condensed Matter
Issue number17
Publication statusPublished - 2009

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics


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