| Issue |
EPL
Volume 145, Number 6, March 2024
|
|
|---|---|---|
| Article Number | 63001 | |
| Number of page(s) | 5 | |
| Section | Fluid and nonlinear dynamics | |
| DOI | https://doi.org/10.1209/0295-5075/ad2870 | |
| Published online | 19 March 2024 | |
Asymmetric acoustic splitting with the dual-layers of binary metagratings
1 School of Physics and Electronics, Hunan Normal University - Changsha 410081, China
2 Department of Automation, Shanghai Jiao Tong University - Shanghai 200240, China
Received: 8 November 2023
Accepted: 12 February 2024
Here, we exhibit the asymmetric acoustic splitting with the dual-layers of binary metagratings (BMs), i.e., BM1 and BM2. For the positive incidence (PI) normally from the BM1 side, acoustic waves are freely transmitted through the BM1 and split into two beams with the transmitted angles at 
and 
, then the two beams are freely transmitted through the BM2 with the transmitted angles at and . For the negative incidence (NI) normally from the BM2 side, acoustic waves are wholly reflected. Hence, the asymmetric acoustic splitting is observed. Here, the dual-layers of BMs are exemplified by the coating cells with different period lengths. Excellent agreement can be observed between the numerical simulations and the theoretical analysis. Our proposal may be applied in noise control and acoustic communication.
© 2024 EPLA
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.