Chapter 3: Acoustic metamaterials
Bo Songa; Aiguo Zhaob; Yusheng Shia a School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of Chinab College of Civil Engineering, Nanjing Tech University, Nanjing, People's Republic of China
Abstract
Acoustic metamaterials refer to artificial structures or composites, composed of identical or gradually changing elaborately designed cell arrays, which can manipulate sound waves within subwavelength scales. Through carefully designing the microstructure and dimension parameters of acoustic metamaterial cells, the two key physical parameters that are essential for the propagation of the sound wave in materials—effective density ρ and bulk ...
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