Ultra-directional source of longitudinal acoustic waves based on a two-dimensional solid/solid phononic crystal

B. Morvan, A. Tinel, J. O. Vasseur, R. Sainidou, P. Rembert, A. C. Hladky-Hennion, N. Swinteck, Pierre A Deymier

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Phononic crystals (PC) can be used to control the dispersion properties of acoustic waves, which are essential to direct their propagation. We use a PC-based two-dimensional solid/solid composite to demonstrate experimentally and theoretically the spatial filtering of a monochromatic non-directional wave source and its emission in a surrounding water medium as an ultra-directional beam with narrow angular distribution. The phenomenon relies on square-shaped equifrequency contours (EFC) enabling self-collimation of acoustic waves within the phononic crystal. Additionally, the angular width of collimated beams is controlled via the EFC size-shrinking when increasing frequency.

Original languageEnglish (US)
Article number214901
JournalJournal of Applied Physics
Volume116
Issue number21
DOIs
StatePublished - Dec 7 2014

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acoustics
crystals
spatial filtering
collimation
angular distribution
composite materials
propagation
water

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Ultra-directional source of longitudinal acoustic waves based on a two-dimensional solid/solid phononic crystal. / Morvan, B.; Tinel, A.; Vasseur, J. O.; Sainidou, R.; Rembert, P.; Hladky-Hennion, A. C.; Swinteck, N.; Deymier, Pierre A.

In: Journal of Applied Physics, Vol. 116, No. 21, 214901, 07.12.2014.

Research output: Contribution to journalArticle

Morvan, B, Tinel, A, Vasseur, JO, Sainidou, R, Rembert, P, Hladky-Hennion, AC, Swinteck, N & Deymier, PA 2014, 'Ultra-directional source of longitudinal acoustic waves based on a two-dimensional solid/solid phononic crystal', Journal of Applied Physics, vol. 116, no. 21, 214901. https://doi.org/10.1063/1.4903076
Morvan, B. ; Tinel, A. ; Vasseur, J. O. ; Sainidou, R. ; Rembert, P. ; Hladky-Hennion, A. C. ; Swinteck, N. ; Deymier, Pierre A. / Ultra-directional source of longitudinal acoustic waves based on a two-dimensional solid/solid phononic crystal. In: Journal of Applied Physics. 2014 ; Vol. 116, No. 21.
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