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Applied Physics Letters / Volume 98 / Issue 24 / INTERDISCIPLINARY AND GENERAL PHYSICS

Appl. Phys. Lett. 98, 244102 (2011); http://dx.doi.org/10.1063/1.3599849 (3 pages)

Experimental realization of broadband tunable resonators based on anisotropic metafluids

Ignacio Spiousas, Daniel Torrent, and José Sánchez-Dehesa

Grupo de Fenómenos Ondulatorios, Universidad Politécnica de Valencia, C/Camino de Vera, s/n (Edificio 7F), ES-46022 Valencia, Spain

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(Received 20 April 2011; accepted 23 May 2011; published online 15 June 2011)

This letter demonstrates the mechanical tuning of modes confined in two-dimensional acoustic cavities based on anisotropic metafluids. The employed metafluids have been designed with effective parameters such that the radial component of the sound speed tensor keeps constant and the acoustic impedance remains finite along the tuning. It is shown that mode frequencies can be mechanically down shifted to extremely low values. Experiments confirm the model predictions and let us to conclude that this type of resonators can be employed for the miniaturization of standard resonators based on isotropic fluids such as air.

© 2011 American Institute of Physics

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KEYWORDS and PACS

Keywords

acoustic materials, acoustic resonators, anisotropic media, metamaterials, nonlinear acoustics

PACS

  • 43.25.-x

    Nonlinear acoustics

  • 43.58.Kr

    Spectrum and frequency analyzers and filters; acoustical and electrical oscillographs; photoacoustic spectrometers; acoustical delay lines and resonators

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3599849

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    Z. Yang, J. Mei, M. Yang, N. H. Chan, and P. Sheng, Phys. Rev. Lett. 101, 204301 (2008).

    S. H. Lee, C. M. Park, Y. M. Seo, Z. G. Wang, and C. K. Kim, Phys. Rev. Lett. 104, 054301 (2010).

    D. Torrent and J. Sánchez-Dehesa, Phys. Rev. Lett. 103, 064301 (2009).

    B. I. Popa and S. A. Cummer, Phys. Rev. B 80, 174303 (2009).

    D. Torrent and J. Sánchez-Dehesa, Phys. Rev. Lett. 105, 174301 (2010).

    L. Zigoneanu, B. I. Popa, A. F. Starr, and S. A. Cummer, J. Appl. Phys. 109, 054906 (2011)JAPIAU000109000005054906000001.


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