Observation of maxon-like ultrasound in elastic metabeam
Source abstract
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.
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Research context
OpenAlex topics: Acoustic Wave Phenomena Research · Fluid Dynamics Simulations and Interactions · Metamaterials and Metasurfaces Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Civil and Environmental Engineering, University of Utah 1 , Salt Lake City, Utah 84112, USA
Department of Mechanical Engineering, University of Utah 2 , Salt Lake City, Utah 84112, USA
Institute of Applied Physics, Karlsruhe Institute of Technology (KIT) 3 , 76128 Karlsruhe, Germany
Funding
Idaho Operations Office, U.S. Department of Energy
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