Waveguiding in two-dimensional piezoelectric phononic crystal plates

J. O. Vasseur, A. C. Hladky-Hennion, B. Djafari-Rouhani, F. Duval, B. Dubus, Y. Pennec, Pierre A Deymier

Research output: Contribution to journalArticle

131 Citations (Scopus)

Abstract

We investigate the possibility of designing phononic crystal-based devices for telecommunication applications using materials commonly employed in microfabrication. We focus our attention on a phononic crystal made of a square array of cylindrical holes drilled in an active piezoelectric PZT5A matrix. Two different structures are considered, namely, a freestanding phononic crystal plate and a plate deposited on a silicon substrate. The geometrical characteristics of the phononic crystal plates (lattice parameter and thickness) were chosen to ensure the existence of an absolute band gap around 1.5 GHz; a common frequency in radio frequency telecommunications. Computations of the dispersion curves of these active structures were conducted with the help of the finite element method. We demonstrate the existence of absolute band gaps in the band structure of the phononic crystal plates and, then, the possibility of guided modes inside a linear defect created by removing one row of air holes in the phononic crystal. In the case of the supported phononic crystal plates, we show the existence of an absolute forbidden band in the plate modes when the thickness of the substrate significantly exceeds the plate thickness. We discuss the conditions to realize waveguiding through a linear defect inside the supported plate. The present work provides evidences that phononic crystal properties can be integrated with existing silicon based microdevice technology.

Original languageEnglish (US)
Article number114904
JournalJournal of Applied Physics
Volume101
Issue number11
DOIs
StatePublished - 2007

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piezoelectric crystals
crystals
telecommunication
forbidden bands
defects
silicon
lattice parameters
radio frequencies
finite element method
air
curves
matrices

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

Cite this

Vasseur, J. O., Hladky-Hennion, A. C., Djafari-Rouhani, B., Duval, F., Dubus, B., Pennec, Y., & Deymier, P. A. (2007). Waveguiding in two-dimensional piezoelectric phononic crystal plates. Journal of Applied Physics, 101(11), [114904]. https://doi.org/10.1063/1.2740352

Waveguiding in two-dimensional piezoelectric phononic crystal plates. / Vasseur, J. O.; Hladky-Hennion, A. C.; Djafari-Rouhani, B.; Duval, F.; Dubus, B.; Pennec, Y.; Deymier, Pierre A.

In: Journal of Applied Physics, Vol. 101, No. 11, 114904, 2007.

Research output: Contribution to journalArticle

Vasseur, JO, Hladky-Hennion, AC, Djafari-Rouhani, B, Duval, F, Dubus, B, Pennec, Y & Deymier, PA 2007, 'Waveguiding in two-dimensional piezoelectric phononic crystal plates', Journal of Applied Physics, vol. 101, no. 11, 114904. https://doi.org/10.1063/1.2740352
Vasseur JO, Hladky-Hennion AC, Djafari-Rouhani B, Duval F, Dubus B, Pennec Y et al. Waveguiding in two-dimensional piezoelectric phononic crystal plates. Journal of Applied Physics. 2007;101(11). 114904. https://doi.org/10.1063/1.2740352
Vasseur, J. O. ; Hladky-Hennion, A. C. ; Djafari-Rouhani, B. ; Duval, F. ; Dubus, B. ; Pennec, Y. ; Deymier, Pierre A. / Waveguiding in two-dimensional piezoelectric phononic crystal plates. In: Journal of Applied Physics. 2007 ; Vol. 101, No. 11.
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