Observation of maxon-like ultrasound in elastic metabeam-Reference-Cited by-同舟云学术

Observation of maxon-like ultrasound in elastic metabeam

Published:2024-03-01 Issue:3 Volume:12 Page:
ISSN:2166-532X
Container-title:APL Materials
language:en
Short-container-title:

Author:

Zhang Peng¹^ORCID,Liu Yunya²^ORCID,Zhang Keping¹^ORCID,Wu Yuning¹^ORCID,Chen Fei²^ORCID,Chen Yi³^ORCID,Wang Pai²^ORCID,Zhu Xuan¹^ORCID

Affiliation:

1. Department of Civil and Environmental Engineering, University of Utah 1 , Salt Lake City, Utah 84112, USA

2. Department of Mechanical Engineering, University of Utah 2 , Salt Lake City, Utah 84112, USA

3. Institute of Applied Physics, Karlsruhe Institute of Technology (KIT) 3 , 76128 Karlsruhe, Germany

Abstract

We observe maxon-like dispersion of ultrasonic guided waves in elastic metamaterials consisting of a rectangular beam and an array of cylindrical resonators. The pillars act as asymmetric resonators that induce a strong modal hybridization. We experimentally observe the strongly localized maxon mode with zero group velocity. Our study also demonstrates a unique feature of the maxon with a down-shifting peak frequency in space. To reveal the fundamental mechanism, we conduct comprehensive numerical studies on all frieze group symmetries and key geometric parameters.

Funder

Idaho Operations Office, U.S. Department of Energy

Publisher

AIP Publishing

Link

https://pubs.aip.org/aip/apm/article-pdf/doi/10.1063/5.0180074/19717229/031110_1_5.0180074.pdf

Reference74 articles.

1. Band structure of elastic waves in two dimensional systems;Solid State Commun.,1993

2. Acoustic band structure of periodic elastic composites;Phys. Rev. Lett.,1993

3. Locally resonant sonic materials;Science,2000

4. Harnessing buckling to design tunable locally resonant acoustic metamaterials;Phys. Rev. Lett.,2014

5. Buckling-induced reconfigurability in underwater acoustic scatterers;Appl. Phys. Lett.,2020