Synthesizing topological acoustic rainbow trapping at deep-subwavelength corners

Affiliations

• ¹ Department of Physics, MOE Key Laboratory of Modern Acoustics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China.
• ² Department of Physics, MOE Key Laboratory of Modern Acoustics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China. Electronic address: zhangzhiwang@nju.edu.cn.
• ³ Department of Physics, MOE Key Laboratory of Modern Acoustics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China; State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China. Electronic address: chengying@nju.edu.cn.
• ⁴ Department of Physics, MOE Key Laboratory of Modern Acoustics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China; State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China; College of Aerospace Engineering, Chongqing University, Chongqing 400044, China. Electronic address: liuxiaojun@nju.edu.cn.
• ⁵ IMDEA Materials Institute, Madrid 28906, Spain. Electronic address: johan.christensen@imdea.org.