The acoustic router, capable of guiding sound waves along specific paths, holds a significant value in both science and engineering. Compared to traditional methods of implementing acoustic routing, the recently developed concept of topological acoustics, with its nontrivial topological phases, offers the potential to achieve a robust acoustic routing device. However, current investigations primarily focus on individual topological phases within a single bandgap, thereby limiting the exploration of diverse topological phases in multiple bandgaps and their hybridizations. In this study, we utilize topological acoustics to construct a robust dual-band acoustic router, which is challenging to achieve with traditional acoustics. By calculating Chern and valley topological phases in different bands, we reveal the competitive relations between different topological phases in a specific bandgap. Furthermore, by modifying the boundary meta-atoms, we have increased the operational frequency bands and proposed a triple-band acoustic router.
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8 April 2024
Research Article|
April 08 2024
Robust multi-band acoustic router by hybridizing distinct topological phases
Special Collection:
Topological and Chiral Matter – Physics and Applications
Yang Hu;
Yang Hu
(Data curation, Methodology, Visualization, Writing – original draft)
1
Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University
, Nanjing 210093, China
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Zhiwang Zhang
;
Zhiwang Zhang
a)
(Conceptualization, Funding acquisition, Supervision, Validation, Writing – review & editing)
1
Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University
, Nanjing 210093, China
a)Authors to whom correspondence should be addressed: [email protected]; [email protected]; and [email protected]
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Ying Cheng
;
Ying Cheng
a)
(Funding acquisition, Supervision, Validation, Writing – review & editing)
1
Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University
, Nanjing 210093, China
2
State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences
, Beijing 100190, China
a)Authors to whom correspondence should be addressed: [email protected]; [email protected]; and [email protected]
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Xiaojun Liu
Xiaojun Liu
a)
(Funding acquisition, Supervision, Validation, Writing – review & editing)
1
Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University
, Nanjing 210093, China
2
State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences
, Beijing 100190, China
a)Authors to whom correspondence should be addressed: [email protected]; [email protected]; and [email protected]
Search for other works by this author on:
a)Authors to whom correspondence should be addressed: [email protected]; [email protected]; and [email protected]
Appl. Phys. Lett. 124, 151701 (2024)
Article history
Received:
January 31 2024
Accepted:
March 26 2024
Citation
Yang Hu, Zhiwang Zhang, Ying Cheng, Xiaojun Liu; Robust multi-band acoustic router by hybridizing distinct topological phases. Appl. Phys. Lett. 8 April 2024; 124 (15): 151701. https://doi.org/10.1063/5.0201804
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