Programmable Moving Defect for Spatiotemporal Wave Localization in Piezoelectric Metamaterials

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Author(s):	Thomes, Renan L. ; Beli, Danilo ; Sugino, Christopher ; Erturk, Alper ; De Marqui Junior, Carlos Total Authors: 5
Document type:	Journal article
Source:	PHYSICAL REVIEW APPLIED; v. 19, n. 6, p. 8-pg., 2023-06-09.
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 metamate-rial, 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 metama-terials may enable innovative solutions for information transmission, multiplexing and demultiplexing, sensing, and coding. (AU)

FAPESP's process:	18/18774-6 - Manipulating Mechanical Waves Using Programmable Periodic Structures
Grantee:	Danilo Beli
Support Opportunities:	Scholarships in Brazil - Post-Doctoral


FAPESP's process:	18/15894-0 - Periodic structure design and optimization for enhanced vibroacoustic performance: ENVIBRO
Grantee:	Carlos de Marqui Junior
Support Opportunities:	Research Projects - Thematic Grants