Acoustic and elastic ribbon assembly in phononic crystals: methods and devices formed thereby

摘要

A phononic meta material device comprising: a matrix of an elastomer and a dispersed phase of a plurality of periodically repeating regions of a thermoplastic resin forming a two-dimensional or three-dimensional lattice, wherein a ratio of a longitudinal acoustic velocity (CL) in the thermoplastic resin to a longitudinal one The speed of sound in the elastomer is equal to or greater than 2.0, and wherein a ratio of a transverse sound velocity (CT) in the thermoplastic resin to a transverse velocity of sound in the elastomer is equal to or greater than 40.0.