Resonant excitation of coupled Rayleigh waves in a short and narrow fluid channel clad between two identical metal plates
Abstract
Transmission of ultrasonic waves through a slit between two water immersed brass plates is studied for sub-wavelength plate thicknesses and slit apertures. Extraordinary high absorption is observed at discrete frequencies corresponding to resonant excitation of Rayleigh waves on the both sides of the channel. The coupling of the Rayleigh waves occurs through the fluid and the corresponding contribution to the dispersion has been theoretically derived and also experimentally confirmed. Symmetric and anti-symmetric modes are predicted but only the symmetric mode resonances have been observed. It follows from the dispersion equation that the coupled Rayleigh waves cannot be excited in a channel with apertures less than the critical one. The calculated critical aperture is in a good agreement with the measured acoustic spectra. These findings could be applied to design a broadband absorptive metamaterial.
- Authors:
-
- Universitat Politecnica de Valencia (Spain)
- CNRS and Univ. Joseph Fourier, Grenoble (France)
- Universitat Politecnica de Valencia (Spain); Univ. of North Texas, Denton, TX (United States)
- Publication Date:
- Research Org.:
- Universitat Politècnica de València, Valencia (Spain)
- Sponsoring Org.:
- USDOE Office of Science (SC); US Department of the Navy, Office of Naval Research (ONR)
- OSTI Identifier:
- 1076440
- Grant/Contract Number:
- FG02-06ER46312
- Resource Type:
- Accepted Manuscript
- Journal Name:
- AIP Advances
- Additional Journal Information:
- Journal Volume: 1; Journal Issue: 4; Journal ID: ISSN 2158-3226
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Citation Formats
García-Chocano, Victor M., López-Rios, Tomás, Krokhin, Arkadii, and Sanchez-Dehesa, Jose. Resonant excitation of coupled Rayleigh waves in a short and narrow fluid channel clad between two identical metal plates. United States: N. p., 2011.
Web. doi:10.1063/1.3675800.
García-Chocano, Victor M., López-Rios, Tomás, Krokhin, Arkadii, & Sanchez-Dehesa, Jose. Resonant excitation of coupled Rayleigh waves in a short and narrow fluid channel clad between two identical metal plates. United States. https://doi.org/10.1063/1.3675800
García-Chocano, Victor M., López-Rios, Tomás, Krokhin, Arkadii, and Sanchez-Dehesa, Jose. Fri .
"Resonant excitation of coupled Rayleigh waves in a short and narrow fluid channel clad between two identical metal plates". United States. https://doi.org/10.1063/1.3675800. https://www.osti.gov/servlets/purl/1076440.
@article{osti_1076440,
title = {Resonant excitation of coupled Rayleigh waves in a short and narrow fluid channel clad between two identical metal plates},
author = {García-Chocano, Victor M. and López-Rios, Tomás and Krokhin, Arkadii and Sanchez-Dehesa, Jose},
abstractNote = {Transmission of ultrasonic waves through a slit between two water immersed brass plates is studied for sub-wavelength plate thicknesses and slit apertures. Extraordinary high absorption is observed at discrete frequencies corresponding to resonant excitation of Rayleigh waves on the both sides of the channel. The coupling of the Rayleigh waves occurs through the fluid and the corresponding contribution to the dispersion has been theoretically derived and also experimentally confirmed. Symmetric and anti-symmetric modes are predicted but only the symmetric mode resonances have been observed. It follows from the dispersion equation that the coupled Rayleigh waves cannot be excited in a channel with apertures less than the critical one. The calculated critical aperture is in a good agreement with the measured acoustic spectra. These findings could be applied to design a broadband absorptive metamaterial.},
doi = {10.1063/1.3675800},
journal = {AIP Advances},
number = 4,
volume = 1,
place = {United States},
year = {Fri Dec 23 00:00:00 EST 2011},
month = {Fri Dec 23 00:00:00 EST 2011}
}
Web of Science