Topological transmission of elastic waves on a macroscopic pentamode metamaterial plate

In this paper, we devise a pentamode metamaterial plate exhibiting topological characteristics. By organizing pentamode metamaterial structural elements, topological boundary states are attained, effectively safeguarding propagation of elastic waves. Moreover, based on the numerical simulation model, we employ a polymer to fabricate a macro-scale specimen via additive manufacturing. Through assessing the vibrational response of the sample, we corroborate its topological attributes in governing elastic wave transmission. This discovery paves the way for a novel approach to manipulating acoustic/elastic waves employing pentamode metamaterials.

Automated summary

In this study, a pentamode metamaterial plate with topological characteristics is designed. The organization of pentamode metamaterial structural elements leads to the achievement of topological boundary states, which effectively protect the propagation of elastic waves. Additionally, a macro-scale specimen is fabricated using additive manufacturing and a polymer based on the numerical simulation model. The vibrational response of the sample confirms its topological attributes in controlling elastic wave transmission. This discovery paves the way for a novel approach to manipulating acoustic/elastic waves using pentamode metamaterials.