Imaging of topologically protected elastic mode in silica 1D phononic crystal via photoelastic effect

Ingi Kim, S. Iwamoto, Y. Arakawa
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Abstract

We measure the spatial distribution of a topologically protected elastic modes in a silica 1D phononic crystal (PnC) by using the photoelasticity imaging technique. The strong localization of the topological elastic mode at the interface of two-joined PnCs with topologically distinct bandgaps is experimentally demonstrated.
二氧化硅一维声子晶体中拓扑保护弹性模的光弹性成像
利用光弹性成像技术测量了拓扑保护弹性模在硅一维声子晶体(PnC)中的空间分布。实验证明了具有不同带隙的双连接pnc界面上拓扑弹性模的强局域化。
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