Antichiral edge states in an acoustic resonator lattice with staggered air flow
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...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Online Access: | https://hdl.handle.net/10356/153589 |
| _version_ | 1824455547763556352 |
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| author | Yu, Letian Xue, Haoran Zhang, Baile |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Yu, Letian Xue, Haoran Zhang, Baile |
| author_sort | Yu, Letian |
| collection | NTU |
| description | 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. |
| first_indexed | 2025-02-19T03:39:57Z |
| format | Journal Article |
| id | ntu-10356/153589 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:39:57Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1535892023-02-28T20:04:35Z Antichiral edge states in an acoustic resonator lattice with staggered air flow Yu, Letian Xue, Haoran Zhang, Baile School of Physical and Mathematical Sciences Division of Physics and Applied Physics Centre for Disruptive Photonic Technologies (CDPT) Science::Physics Acoustic Fields Honeycomb Structures 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. Ministry of Education (MOE) Published version This work was supported by the Singapore MOE Academic Research Fund (Tier 3 Grant No. MOE2016-T3-1-006 and Tier 2 Grant No. MOE2019-T2-2-085). 2021-12-09T02:55:06Z 2021-12-09T02:55:06Z 2021 Journal Article 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-. https://dx.doi.org/10.1063/5.0050645 0021-8979 https://hdl.handle.net/10356/153589 10.1063/5.0050645 2-s2.0-85107912754 23 129 235103 en MOE2016-T3-1-006 MOE2019-T2-2-085 Journal of Applied Physics 10.21979/N9/9RBOX8 © 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). application/pdf |
| spellingShingle | Science::Physics Acoustic Fields Honeycomb Structures Yu, Letian Xue, Haoran Zhang, Baile Antichiral edge states in an acoustic resonator lattice with staggered air flow |
| title | Antichiral edge states in an acoustic resonator lattice with staggered air flow |
| title_full | Antichiral edge states in an acoustic resonator lattice with staggered air flow |
| title_fullStr | Antichiral edge states in an acoustic resonator lattice with staggered air flow |
| title_full_unstemmed | Antichiral edge states in an acoustic resonator lattice with staggered air flow |
| title_short | Antichiral edge states in an acoustic resonator lattice with staggered air flow |
| title_sort | antichiral edge states in an acoustic resonator lattice with staggered air flow |
| topic | Science::Physics Acoustic Fields Honeycomb Structures |
| url | https://hdl.handle.net/10356/153589 |
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