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Phononic Quasicrystals

Published online by Cambridge University Press:  01 February 2011

Daniel Sutter ,
Günter Krauss  and
Walter Steurer
Daniel Sutter
Affiliation:
Laboratory of Crystallography, Swiss Federal Institute of Technology, 8092-Zürich, Switzerland
Günter Krauss
Affiliation:
Laboratory of Crystallography, Swiss Federal Institute of Technology, 8092-Zürich, Switzerland
Walter Steurer
Affiliation:
Laboratory of Crystallography, Swiss Federal Institute of Technology, 8092-Zürich, Switzerland
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Abstract

Phononic crystals are to sound what photonic crystals are to light and crystals are to electrons. If the wavelength is of the same order of magnitude as the typical distances between the objects in their ordered arrangement, then the interaction is dominated by diffraction besides refraction. Depending on the spectral properties of the material, band gaps appear for certain frequencies. In special cases, these gaps are omni-directional. A huge amount of application-driven research has been performed on photonic crystals, much less on phononic crystals, and almost nothing on phononic quasicrystals. We present here the first experimental studies on two-dimensional, quasiperiodic, phononic crystals. Our experiments have been performed with ultrasound on phononic crystals and quasicrystals consisting of steel cylinders in water. The pros and cons of phononic quasicrystals are discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 805: Symposium LL – Quasicrystals , 2003 , LL3.2
Copyright
Copyright © Materials Research Society 2004

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References

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