PT-Symmetric Acoustics

PT-Symmetric Acoustics

We introduce here the concept of acoustic parity-time (PT) symmetry and demonstrate the extraordinary scattering characteristics of the acoustic PT medium. On the basis of exact calculations, we show how an acoustic PT-symmetric medium can become unidirectionally transparent at given frequencies. Co...

Full description

Bibliographic Details
Main Authors: Xuefeng Zhu, Hamidreza Ramezani, Chengzhi Shi, Jie Zhu, Xiang Zhang
Format: Article
Language:English
Published: American Physical Society 2014-09-01
Series:Physical Review X
Online Access:http://doi.org/10.1103/PhysRevX.4.031042
id doaj-967b3e2e2e5540d7b5f74f865e737820
record_format Article
spelling doaj-967b3e2e2e5540d7b5f74f865e7378202020-11-25T00:44:12ZengAmerican Physical SocietyPhysical Review X2160-33082014-09-014303104210.1103/PhysRevX.4.031042PT-Symmetric AcousticsXuefeng ZhuHamidreza RamezaniChengzhi ShiJie ZhuXiang ZhangWe introduce here the concept of acoustic parity-time (PT) symmetry and demonstrate the extraordinary scattering characteristics of the acoustic PT medium. On the basis of exact calculations, we show how an acoustic PT-symmetric medium can become unidirectionally transparent at given frequencies. Combining such a PT-symmetric medium with transformation acoustics, we design two-dimensional symmetric acoustic cloaks that are unidirectionally invisible in a prescribed direction. Our results open new possibilities for designing functional acoustic devices with directional responses.http://doi.org/10.1103/PhysRevX.4.031042
collection DOAJ
language English
format Article
sources DOAJ
author Xuefeng Zhu
Hamidreza Ramezani
Chengzhi Shi
Jie Zhu
Xiang Zhang
spellingShingle Xuefeng Zhu
Hamidreza Ramezani
Chengzhi Shi
Jie Zhu
Xiang Zhang
PT-Symmetric Acoustics
Physical Review X
author_facet Xuefeng Zhu
Hamidreza Ramezani
Chengzhi Shi
Jie Zhu
Xiang Zhang
author_sort Xuefeng Zhu
title PT-Symmetric Acoustics
title_short PT-Symmetric Acoustics
title_full PT-Symmetric Acoustics
title_fullStr PT-Symmetric Acoustics
title_full_unstemmed PT-Symmetric Acoustics
title_sort pt-symmetric acoustics
publisher American Physical Society
series Physical Review X
issn 2160-3308
publishDate 2014-09-01
description We introduce here the concept of acoustic parity-time (PT) symmetry and demonstrate the extraordinary scattering characteristics of the acoustic PT medium. On the basis of exact calculations, we show how an acoustic PT-symmetric medium can become unidirectionally transparent at given frequencies. Combining such a PT-symmetric medium with transformation acoustics, we design two-dimensional symmetric acoustic cloaks that are unidirectionally invisible in a prescribed direction. Our results open new possibilities for designing functional acoustic devices with directional responses.
url http://doi.org/10.1103/PhysRevX.4.031042
work_keys_str_mv AT xuefengzhu ptsymmetricacoustics
AT hamidrezaramezani ptsymmetricacoustics
AT chengzhishi ptsymmetricacoustics
AT jiezhu ptsymmetricacoustics
AT xiangzhang ptsymmetricacoustics
_version_ 1716121051140718592

Similar Items