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Title: Time-domain imaging of gigahertz surface waves on an acoustic metamaterial

Abstract

We extend time-domain imaging in acoustic metamaterials to gigahertz frequencies. Using a sample consisting of a regular array of ~1 μm diameter silica microspheres forming a two-dimensional triangular lattice on a substrate, we implement an ultrafast technique to probe surface acoustic wave propagation inside the metamaterial area and incident on the metamaterial from a region containing no microspheres, which reveals the acoustic metamaterial dispersion, the presence of band gaps and the acoustic transmission properties of the interface. Here, a theoretical model of this locally resonant metamaterial based on normal and shear-rotational resonances of the spheres fits the data well. Using this model, we show analytically how the sphere elastic coupling parameters influence the gap widths.

Authors:
 [1];  [1];  [1];  [1];  [2];  [2];  [2];  [3];  [4];  [1]
  1. Hokkaido Univ., Sapporo (Japan)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  3. Univ. of California, San Diego, La Jolla, CA (United States)
  4. Le Mans Univ., Le Mans (France)
Publication Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1500099
Grant/Contract Number:  
FG02-00ER15087
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
New Journal of Physics
Additional Journal Information:
Journal Volume: 20; Journal Issue: 1; Journal ID: ISSN 1367-2630
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; acoustic; gigahertz; metamaterial; imaging; surface acoustic waves; time domain; ultrasonics

Citation Formats

Otsuka, Paul H., Mezil, Sylvain, Matsuda, Osamu, Tomoda, Motonobu, Maznev, Alexei A., Gan, Tian, Fang, Nicholas, Boechler, Nicholas, Gusev, Vitalyi E., and Wright, Oliver B. Time-domain imaging of gigahertz surface waves on an acoustic metamaterial. United States: N. p., 2018. Web. doi:10.1088/1367-2630/aa9298.
Otsuka, Paul H., Mezil, Sylvain, Matsuda, Osamu, Tomoda, Motonobu, Maznev, Alexei A., Gan, Tian, Fang, Nicholas, Boechler, Nicholas, Gusev, Vitalyi E., & Wright, Oliver B. Time-domain imaging of gigahertz surface waves on an acoustic metamaterial. United States. doi:10.1088/1367-2630/aa9298.
Otsuka, Paul H., Mezil, Sylvain, Matsuda, Osamu, Tomoda, Motonobu, Maznev, Alexei A., Gan, Tian, Fang, Nicholas, Boechler, Nicholas, Gusev, Vitalyi E., and Wright, Oliver B. Mon . "Time-domain imaging of gigahertz surface waves on an acoustic metamaterial". United States. doi:10.1088/1367-2630/aa9298. https://www.osti.gov/servlets/purl/1500099.
@article{osti_1500099,
title = {Time-domain imaging of gigahertz surface waves on an acoustic metamaterial},
author = {Otsuka, Paul H. and Mezil, Sylvain and Matsuda, Osamu and Tomoda, Motonobu and Maznev, Alexei A. and Gan, Tian and Fang, Nicholas and Boechler, Nicholas and Gusev, Vitalyi E. and Wright, Oliver B.},
abstractNote = {We extend time-domain imaging in acoustic metamaterials to gigahertz frequencies. Using a sample consisting of a regular array of ~1 μm diameter silica microspheres forming a two-dimensional triangular lattice on a substrate, we implement an ultrafast technique to probe surface acoustic wave propagation inside the metamaterial area and incident on the metamaterial from a region containing no microspheres, which reveals the acoustic metamaterial dispersion, the presence of band gaps and the acoustic transmission properties of the interface. Here, a theoretical model of this locally resonant metamaterial based on normal and shear-rotational resonances of the spheres fits the data well. Using this model, we show analytically how the sphere elastic coupling parameters influence the gap widths.},
doi = {10.1088/1367-2630/aa9298},
journal = {New Journal of Physics},
issn = {1367-2630},
number = 1,
volume = 20,
place = {United States},
year = {2018},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
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