The anomalous reflection of acoustic waves based on metasurface

Changlin Ding, Yawei Zhou, Xiaopeng Zhao, Huaijun Chen, Shilong Zhai

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Metasurfaces with sub-wavelength thickness and planar profile have exhibited novel waves manipulating properties that could not be realized by traditional materials. Here we present an acoustic metasurface (AMS) model composed of double-split hollow sphere (DSHS) resonator arrays with the functionality of modulating reflected wavefronts at will. By tailoring the split-hole diameter of DSHS, the AMS can be designed to cover 2π phase shifts with the step of π/4. The acoustic wave perpendicularly and obliquely incident on the AMS can be reflected at any angle. These anomalous manipulations of the reflected wave's direction are simulated to fulfill the generalized Snell's Law by projecting suitable phase gradient. Such AMS provide another path to acoustic application such as acoustic imaging, cloaking, beams steering devices.

Original languageEnglish
Title of host publicationIMECS 2015 - International MultiConference of Engineers and Computer Scientists 2015
EditorsDavid Dagan Feng, S. I. Ao, Craig Douglas, S. I. Ao, Craig Douglas, Jeong-A Lee, S. I. Ao, Oscar Castillo
PublisherNewswood Limited
Pages755-758
Number of pages4
ISBN (Electronic)9789881925398
StatePublished - 2015
EventInternational MultiConference of Engineers and Computer Scientists 2015, IMECS 2015 - Tsimshatsui, Kowloon, Hong Kong
Duration: 18 Mar 201520 Mar 2015

Publication series

NameLecture Notes in Engineering and Computer Science
Volume2
ISSN (Print)2078-0958

Conference

ConferenceInternational MultiConference of Engineers and Computer Scientists 2015, IMECS 2015
Country/TerritoryHong Kong
CityTsimshatsui, Kowloon
Period18/03/1520/03/15

Keywords

  • Acoustic metasurface
  • Anomalous reflection
  • Double-split hollow sphere (DSHS)
  • Phase gradient

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