Related Experiment Video
Updated: May 8, 2026
06:51
Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations
Published on: August 21, 2018
Reflected wavefront manipulation based on ultrathin planar acoustic metasurfaces
Yong Li1, Bin Liang, Zhong-ming Gu
11] Key Laboratory of Modern Acoustics, MOE, Institute of Acoustics, Department of Physics, Nanjing University, Nanjing 210093, P. R. China [2] State Key Laboratory of Acoustics, Chinese Academy of Sciences, Beijing 100190, P. R. China.
Scientific Reports
|August 30, 2013
Summary
This study demonstrates generalized Snell
Area of Science:
- Acoustics
- Metasurfaces
- Wavefront Engineering
Background:
- Metasurfaces offer novel ways to control optical wavefronts.
- Snell's law governs wave reflection and refraction.
Purpose of the Study:
- To theoretically demonstrate generalized Snell's law for acoustic waves using planar metasurfaces.
- To explore acoustic wavefront manipulation with ultrathin metasurfaces.
Main Methods:
- Designing ultrathin planar acoustic metasurfaces with eight discrete phase shifts (0 to 2π in π/4 steps).
- Utilizing space-coiling structures within metasurface units.
- Implementing transverse phase profiles for wavefront control.
Main Results:
- Achieved generalized Snell's law for reflected acoustic waves.
- Demonstrated anomalous reflection and conversion of propagating to surface waves.
- Showcased aberration-free planar acoustic lens and Bessel beam generation.
Conclusions:
- Ultrathin planar acoustic metasurfaces can effectively engineer acoustic wavefronts.
- This work opens new possibilities for acoustic manipulation and device design.
