Programmable Moving Defect for Spatiotemporal Wave Localization in Piezoelectric Metamaterials

Renan L. Thomes, Danilo Beli, Christopher Sugino, Alper Erturk, Carlos De Marqui Junior

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

In this work, we experimentally demonstrate the concept of space-time wave localization using programmable defects. The dynamic properties of the local resonators of an electromechanical metamaterial, comprising piezoelectric elements connected to synthetic impedance circuits, are digitally controlled to modulate a trivial point defect in space and time. The experimental results show that the vibration energy is gradually transferred and localized over subsequent unit cells according to the defect position. The practical realization of space-time wave localization using programmable defects in elastic metamaterials may enable innovative solutions for information transmission, multiplexing and demultiplexing, sensing, and coding.

Original languageEnglish
Article number064031
JournalPhysical Review Applied
Volume19
Issue number6
DOIs
StatePublished - Jun 2023

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