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Adv Mater. 2017 Feb;29(6). doi: 10.1002/adma.201603507. Epub 2016 Dec 6.

Coding Acoustic Metasurfaces.

Author information

1
The MOE Key Laboratory of Weak Light Nonlinear Photonics, School of Physics, TEDA Institute of Applied Physics, and the 2011 Project Collaborative Innovation Center for Biological Therapy, Nankai University, Tianjin, 300071, China.
2
School of Physics and Technology and Institute for Advanced Studies, Wuhan University, Wuhan, 430072, China.

Abstract

Coding acoustic metasurfaces can combine simple logical bits to acquire sophisticated functions in wave control. The acoustic logical bits can achieve a phase difference of exactly π and a perfect match of the amplitudes for the transmitted waves. By programming the coding sequences, acoustic metasurfaces with various functions, including creating peculiar antenna patterns and waves focusing, have been demonstrated.

KEYWORDS:

acoustic; coding; metasurfaces; phase

PMID:
27921327
DOI:
10.1002/adma.201603507

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