Simultaneous topological Bragg and locally resonant edge modes of shear horizontal guided wave in one-dimensional structure
Simultaneous topological Bragg and locally resonant edge modes of shear horizontal guided wave in one-dimensional structure
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DOI：
10.1088/1361-6463/aa7619
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Shaoyong Huo
中科院分区：
文献类型：
--
作者：
Hongbo Huang;Jiujiu Chen;Shaoyong Huo
In this paper, we realize the topological edge modes of a shear horizontal (SH) guided wave.in the one-dimensional (1D) composite structure that exist at the phononic band gaps opened.at the center of the Brillouin zone (BZ), or at the zone boundary, or both. Furthermore, we.investigate the topological edge modes in periodic acoustic systems result from both Bragg.scattering and local resonances. In particular, we find and demonstrate that, in our system.where topological and trivial defect states coexist, these results provide a new paradigm for.manipulating the existence of the interface states in a set of prescribed band gaps that can have.potential applications in the design of novel acoustic devices.
