A postbuckling-based metamaterial for switching the propagation of surface acoustic waves
F. Aloschi, F. Zeighami, A. Palermo, C. Daraio · AIP Publishing · 2025
A postbuckling-based elastic-beam metamaterial can switch surface acoustic wave propagation by toggling between a bandgap (OFF) and bandgap elimination via buckling (ON), using only mechanical effects.
Plain English summary
Why this matters
Key findings
- OFF configuration: undeformed elastic beams resonate to create a bandgap that stops surface acoustic wave propagation.
- ON configuration: buckling redistributes vibration energy across multiple modes and eliminates the bandgap, enabling propagation.
- The switching mechanism is based on mechanical postbuckling in a tunable elastic-beam platform.
- Analytical and numerical findings demonstrate potential for controlling wave propagation in nonlinear periodic materials.
- The approach is described as not requiring external fields.
Limitations
The abstract provides analytical and numerical findings but does not mention experimental validation, device fabrication details, operating conditions, durability, or performance metrics such as switching speed or bandwidth.
Publication
- Publisher
- AIP Publishing
- Publication date
- October 6, 2025
- Research type
- Paper
- License
- https://creativecommons.org/licenses/by/4.0/
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