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Title: Antichiral edge states in an acoustic resonator lattice with staggered air flow
Authors: Yu, Letian
Xue, Haoran
Zhang, Baile
Keywords: Science::Physics
Issue Date: 2021
Source: Yu, L., Xue, H. & Zhang, B. (2021). Antichiral edge states in an acoustic resonator lattice with staggered air flow. Journal of Applied Physics, 129(23), 235103-.
Project: MOE2016-T3-1-006
Journal: Journal of Applied Physics
Abstract: We present a design to achieve antichiral edge states in acoustic systems where edge states on the two parallel edges of a lattice with a strip geometry propagate in the same direction. This peculiar phenomenon is realized by using a honeycomb lattice consisting of acoustic resonators with staggered air flow; i.e., the air flow takes opposite directions in resonators belonging to different sublattices. The existence of antichiral edge states is revealed through full-wave simulations of the band structure and acoustic fields excited by a point source. Furthermore, we compare these antichiral edge states with conventional chiral edge states. It is found that the antichiral edge states are less robust than the chiral ones. Our work offers new possibilities for dispersion engineering and wave manipulations in acoustics.
ISSN: 0021-8979
DOI: 10.1063/5.0050645
DOI (Related Dataset): 10.21979/N9/9RBOX8
Schools: School of Physical and Mathematical Sciences 
Departments: Division of Physics and Applied Physics
Research Centres: Centre for Disruptive Photonic Technologies (CDPT) 
Rights: © 2021 Author(s). All rights reserved. This paper was published by AIP Publishing in Journal of Applied Physics and is made available with permission of Author(s).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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