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Three dimensional acoustic carpet cloak based on an ultrathin metasurface

  • Xi'an Jiaotong University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

The manipulation of acoustic wave has great significance in engineering related to acoustic device design. Recent study reveals that acoustic metasurface can easily change the wave front by a periodic phase array composed of microunits, which provide us a branch approach in physical application. Here, we proposed a design of a 3D ultrathin acoustic carpet cloak based on acoustic metasurface in deep sub-wavelength range. The microunit of the metasurface is constructed by two helmholtz resonators nested together and we can change the reflection phase by adjusting the relative angle of the two helmholtz resonators. The carpet can completely conceal the object because the designed metasurface can compensate the phase distortion caused by the object. The operating frequency is about 1200Hz, numerical simulations show the carpet functions well in normal and small-angle oblique incidences.

Original languageEnglish
Title of host publicationProceedings of the 26th International Congress on Sound and Vibration, ICSV 2019
PublisherCanadian Acoustical Association
ISBN (Electronic)9781999181000
StatePublished - 2019
Event26th International Congress on Sound and Vibration, ICSV 2019 - Montreal, Canada
Duration: 7 Jul 2019 → 11 Jul 2019

Publication series

NameProceedings of the 26th International Congress on Sound and Vibration, ICSV 2019

Conference

Conference26th International Congress on Sound and Vibration, ICSV 2019
Country/TerritoryCanada
CityMontreal
Period7/07/19 → 11/07/19

Keywords

  • Carpet cloak
  • Metasurface
  • Three-dimensional
  • Ultrathin

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