Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/79940
PIRA download icon_1.1View/Download Full Text
Title: Unidirectional wave vector manipulation in two-dimensional space with an all passive acoustic parity-time-symmetric metamaterials crystal
Authors: Liu, T 
Zhu, XF
Chen, F 
Liang, SJ 
Zhu, J 
Issue Date: 23-Mar-2018
Source: Physical review letters, 23 Mar. 2018, v. 120, no. 12, 124502, 124502-1-124502-7
Abstract: Exploring the concept of non-Hermitian Hamiltonians respecting parity-time symmetry with classical wave systems is of great interest as it enables the experimental investigation of parity-time-symmetric systems through the quantum-classical analogue. Here, we demonstrate unidirectional wave vector manipulation in two-dimensional space, with an all passive acoustic parity-time-symmetric metamaterials crystal. The metamaterials crystal is constructed through interleaving groove-and holey-structured acoustic metamaterials to provide an intrinsic parity-time-symmetric potential that is two-dimensionally extended and curved, which allows the flexible manipulation of unpaired wave vectors. At the transition point from the unbroken to broken parity-time symmetry phase, the unidirectional sound focusing effect (along with reflectionless acoustic transparency in the opposite direction) is experimentally realized over the spectrum. This demonstration confirms the capability of passive acoustic systems to carry the experimental studies on general parity-time symmetry physics and further reveals the unique functionalities enabled by the judiciously tailored unidirectional wave vectors in space.
Publisher: American Physical Society
Journal: Physical review letters 
ISSN: 0031-9007
EISSN: 1079-7114
DOI: 10.1103/PhysRevLett.120.124502
Rights: © 2018 American Physical Society
The following publication Liu, T., Zhu, X., Chen, F., Liang, S., & Zhu, J. (2018). Unidirectional wave vector manipulation in two-dimensional space with an all passive acoustic parity-time-symmetric metamaterials crystal. Physical Review Letters, 120(12), 124502, 124502-1-124502-7 is available at https://doi.org/10.1103/PhysRevLett.120.124502.
Appears in Collections:Journal/Magazine Article

Files in This Item:
File Description SizeFormat 
2022_PhysRevLett.120.124502.pdf2.5 MBAdobe PDFView/Open
Open Access Information
Status open access
File Version Version of Record
Access
View full-text via PolyU eLinks SFX Query
Show full item record

Page views

64
Citations as of May 15, 2022

Downloads

46
Citations as of May 15, 2022

SCOPUSTM   
Citations

86
Last Week
1
Last month
Citations as of May 12, 2022

WEB OF SCIENCETM
Citations

80
Last Week
0
Last month
Citations as of May 12, 2022

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.