Acoustic transmissive cloaking using zero-index materials and metasurfaces. (11th April 2019)

• Record Type: Journal Article
• Authors: Zhao, Wei; Chu, Hongchen; Tao, Zhi; Hang, Zhi Hong
• Is Part Of: Applied physics express. Volume 12:Number 5(2019)
• Publication Date: 2019-04-11
• Subjects: cloaking -- metasurface -- zero-index materials -- acoustics; Physics -- Periodicals; Technology -- Periodicals; 621.05
• DOI: 10.7567/1882-0786/ab14ad
• Languages: English
• ISSNs: 1882-0778

Abstract

Abstract: A design of acoustic transmissive cloaking is proposed using a hybrid cloaking shell. The shell consists of one layer of metasurface to manipulate both the incident and exit acoustic wavefronts and one layer of zero-index metamaterial to achieve acoustic energy tunneling. Incident acoustic wave will remain its wavefront after propagating through our hybrid cloaking shell constructed by experimentally realizable acoustic metamaterials. As there is no intrinsic limit to the object to be cloaked, the strategy of our transmissive cloaking geometry has wide potential applications in both airborne sound and underwater ultrasound.