Groove-structured meta-surface for patterned sub-diffraction sound focusing

• Main Authors: Chen, Jian, Sun, Zeqing, Fan, Zheng
• Other Authors: School of Mechanical and Aerospace Engineering
• Format: Article
• Language: English
• Published: 2019
• Subjects: Acoustic Metamaterial; Acoustic Waves; Engineering::Mechanical engineering
• Online Access: https://hdl.handle.net/10356/106321; http://hdl.handle.net/10220/49607
• Institution: Nanyang Technological University

Confining acoustic fields in subwavelength volumes is of fundamental interest in wave-energy harvesting and high-resolution imaging. Phononic crystals have been shown to be capable of superfocusing but are highly limited by their very large dimensions. Acoustic metasurfaces can yield similar functio...