Guiding spoof surface acoustic waves on a monolayer array of rigid cylinders in water. (23rd February 2016)

• Record Type: Journal Article
• Authors: Li, Chunhui; Ke, Manzhu; Zhang, Shenwei; Peng, Shasha; Qiu, Chunyin; Liu, Zhengyou
• Is Part Of: Journal of physics. Volume 49:Number 12(2016)
• Publication Date: 2016-02-23
• Subjects: nonleaky surface acoustic wave -- dipolar modes -- quadruple modes -- beat patterns; Physics -- Periodicals; 530
• DOI: 10.1088/0022-3727/49/12/125304
• Languages: English
• ISSNs: 0022-3727

Abstract

Abstract: In this paper, we systematically investigate a kind of highly localized nonleaky surface acoustic waves (SAWs) in a simple system consisting of a monolayer array of disjunct steel cylinders immersed in water. It shows that the nonleaky SAWs can be attributed to the couplings of the dipolar modes in adjoining steel cylinders, and the couplings of the quadruple modes in adjoining steel cylinders when they are closer. When the SAWs are excited within a finite system, beat patterns are formed, and the cause is analyzed. All the experiments show excellent agreement with the theoretical predictions. This kind of nonleaky SAWs may find potential applications in lab-on-chip devices and acoustic sensors.