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Paper detail

Topological transition in spiral elastic valley metamaterials

Elastic valley metamaterials offer an excellent platform to manipulate elastic waves and have potential applications in energy harvesting and elastography. Here we introduce a series of strategies to realize topological transition in spiral elastic valley metamaterials by parameter modulations. We show the evolution of Berry curvature and valley Chern number as a function of inherent parameters of spiral, which further results in a general scheme to achieve topological valley edge states. Our strategy leverages multiple degrees of freedom in spiral elastic valley metamaterials to provide enhanced opportunities for desired topological states.

preprint2020arXivOpen access
Shuaifeng LiJinkyu Yang
physics.app-phcond-mat.mtrl-sci
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Shuaifeng LiJinkyu Yang

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