Programmable Moving Defect for Spatiotemporal Wave Localization in Piezoelectric Metamaterials

Autor(es)

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

• Tipo de documento: Artigo Científico
• Fonte: PHYSICAL REVIEW APPLIED; v. 19, n. 6, p. 8-pg., 2023-06-09.

Resumo

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)

• Processo FAPESP: 18/18774-6 - Manipulando Ondas Mecânicas Utilizando Estruturas Periódicas Programáveis
• Beneficiário: Danilo Beli
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 18/15894-0 - Projeto e otimização de estruturas periódicas para aprimoramento de desempenho vibroacústico
• Beneficiário: Carlos de Marqui Junior
• Modalidade de apoio: Auxílio à Pesquisa - Temático