Phononic crystal with adaptive connectivity.

Bergamini, Andrea; Delpero, Tommaso; De Simoni, Luca; Di Lillo, Luigi; Ruzzene, Massimo; Ermanni, Paolo · Adv Mater · 2014

basic_science · Level V

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Abstract

The band structure of a phononic crystal can be controlled by tuning the mechanical stiffness of the links connecting its constituting elements. The first implementation of a phononic crystal with adaptive connectivity is obtained by using piezoelectric resonators as variable stiffness elements, and its wave-propagation properties are experimentally characterized.