Phononic crystals and acoustic metamaterials are usually defined as arrangement of basic building blocks that repeat in space. These arrangements are usually periodic with pre-defined properties. Having the ability to tune their properties in real-time is a very desired trait for various potential applications. Such applications can range from wave guiding to acoustic cloaking. In this work, we study phononic metamaterials and their capacity to manipulate waves in a re-programmable manner. The proposed metamaterials can produce different attenuation frequency regions (i.e., bandgaps) that can be altered by means of active control. We utilize a combinatorial design approach to analyze the proposed metamaterials both numerically and experimentally. We consider the interplay between both symmetry and periodicity in the proposed platform. Our design approach can open a new avenue towards phononic metamaterials with unusual properties for the next generation of advanced acoustic devices.
Presenting Author: Melanie Keogh University of Connecticut
Presenting Author Biography: Melanie Keogh is a current graduate student at the University of Connecticut studying methods to tune wave transmission via metamaterial structures.
Authors:
Melanie Keogh University of Connecticut
Osama R. Bilal University of Connecticut
