Acoustic metasurface with hybrid resonances

Guancong Ma, Min Yang, Songwen Xiao, Zhiyu Yang, Ping Sheng*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

897 Citations (Scopus)

Abstract

An impedance-matched surface has the property that an incident wave generates no reflection. Here we demonstrate that by using a simple construction, an acoustically reflecting surface can acquire hybrid resonances and becomes impedance-matched to airborne sound at tunable frequencies, such that no reflection is generated. Each resonant cell of the metasurface is deep-subwavelength in all its spatial dimensions, with its thickness less than the peak absorption wavelength by two orders of magnitude. As there can be no transmission, the impedance-matched acoustic wave is hence either completely absorbed at one or multiple frequencies, or converted into other form(s) of energy, such as an electrical current. A high acoustic-electrical energy conversion efficiency of 23% is achieved.

Original languageEnglish
Pages (from-to)873-878
Number of pages6
JournalNature Materials
Volume13
Issue number9
DOIs
Publication statusPublished - Sept 2014

Scopus Subject Areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint

Dive into the research topics of 'Acoustic metasurface with hybrid resonances'. Together they form a unique fingerprint.

Cite this