Refraction/reflection reversal in two-dimensional acoustic metagratings

• Main Authors: Zou, Hong-Yu, Qian, Jiao, Xia, Jianping, Gu, Shuai, Lu, Yu-Jing, Ge, Yong, Yuan, Shou-Qi, Chen, Hongsheng, Sun, Hong-Xiang, Yang, Yihao, Zhang, Baile
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2024
• Subjects: Physics; Grating diffraction; Phase gradient
• Online Access: https://hdl.handle.net/10356/181425
• Institution: Nanyang Technological University

Unlike acoustic metasurfaces that rely solely on phase gradients, acoustic metagratings (AMs) operate based on both phase gradients and grating diffraction, thus further extending the generalized Snell's law (GSL). In particular, AMs can achieve reversal of refraction and reflection based on th...