螺旋声子晶体中的时变和空变波传输
斑图形成与孤子
2014-08-27 v1
摘要
我们提出了一种在一维螺旋声子晶体中动态可调的波传输机制,其形状类似于DNA结构。这些螺旋结构允许圆柱构件之间倾斜的非线性接触,相对扭转运动可以动态调节相邻圆柱之间的接触刚度。这导致了面内扭转波和面外纵波之间的串扰。我们在波数和频率域中数值证明了它们多样的波混合和可控色散行为。基于这一原理,进一步提出了一个与晶体管相似的声学构型建议,其中纵波可以通过扭转波进行开关控制。
引用
@article{arxiv.1408.6121,
title = {Time- and space-variant wave transmission in helicoidal phononic crystals},
author = {F. Li and C. Chong and J. Yang and P. G. Kevrekidis and C. Daraio},
journal= {arXiv preprint arXiv:1408.6121},
year = {2014}
}
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