Sharkskin-Inspired Magnetoactive Reconfigurable Acoustic Metamaterials.

ABSTRACT: Most of the existing acoustic metamaterials rely on architected structures with fixed configurations, and thus, their properties cannot be modulated once the structures are fabricated. Emerging active acoustic metamaterials highlight a promising opportunity to on-demand switch property states; however, they typically require tethered loads, such as mechanical compression or pneumatic actuation. Using untethered physical stimuli to actively switch property states of acoustic metamaterials remains largely unexplored. Here, inspired by the sharkskin denticles, we present a class of active acoustic metamaterials whose configurations can be on-demand switched via untethered magnetic fields, thus enabling active switching of acoustic transmission, wave guiding, logic operation, and reciprocity.

SUBMITTER: Lee KH 

PROVIDER: S-EPMC7025040 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature