Le, D. H., Kronowetter, F., Chiang, Y. K., Maeder, M., Marburg, S., & Powell, D. A. (Year). Reconfigurable Acoustic Metalens with Tailored Structural Equilibria. [Journal Name].
This research aims to overcome the limitations of traditional acoustic lenses, particularly their fixed focal points, by developing a reconfigurable acoustic metalens capable of dynamically adjusting its focal point.
The researchers designed and fabricated a metalens comprising eight bistable origami units using multi-material 3D printing. Each unit can switch between two stable states, modulating the reflected sound waves and enabling tunable focusing based on the Generalized Snell's Law. Numerical simulations and experimental measurements in a parallel plate waveguide validated the metalens's focusing capabilities.
This study presents a novel approach for programmable sound focusing using a reconfigurable acoustic metalens. The use of bistable origami units and multi-material 3D printing offers a simple yet effective mechanism for achieving dynamic and precise sound manipulation, paving the way for advanced applications in various fields.
This research significantly contributes to the field of acoustics by introducing a highly reconfigurable and tunable metalens design. The proposed approach has the potential to revolutionize applications like medical imaging, non-invasive therapy, and acoustic communication, where precise sound control is crucial.
The current design focuses on a single operating frequency (2000 Hz). Future research could explore broadband functionality and investigate the integration of active control mechanisms for real-time adjustments of the focal point.
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