Real-time simulations and experiments on ultrahigh frequency surface waves in micro-structured phononic crystals

I.A. Veres, Dieter M. Profunser, Oliver B. Wright, Osamu Matsuda, Udo Lang

Research output: Contribution to conferencePaper

Abstract

We investigate experimentally and by numerical simulation the interaction between ultrahigh frequency surface acoustic waves (SAW) and periodic microstructures. We use both one-dimensional (1D) phononic crystals consisting of copper lines embedded in silicon oxide and 2D phononic crystals consisting of air-filled holes etched as a square lattice in a silicon substrate. Experimental results obtained by ultrashort pulsed optical excitation and interferometric detection are compared to time-domain finite element (FEM) simulations of the propagating ultrahigh frequency SAW with frequency components up to ~1 GHz in these phononic crystals, allowing the investigation of SAW scattering and phononic band structure. Good agreement was obtained between simulation and experiment.
Original languageEnglish
Pages1032-1035
Number of pages4
DOIs
Publication statusPublished - Sep 2009
Event2009 IEEE Ultrasonics Symposium - Rome, Italy
Duration: 20 Sep 200923 Sep 2009

Conference

Conference2009 IEEE Ultrasonics Symposium
CountryItaly
CityRome
Period20/09/0923/09/09

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Keywords

  • ultrahigh frequency surface waves
  • phononic crystals
  • periodic microstructures

Cite this

Veres, I. A., Profunser, D. M., Wright, O. B., Matsuda, O., & Lang, U. (2009). Real-time simulations and experiments on ultrahigh frequency surface waves in micro-structured phononic crystals. 1032-1035 . Paper presented at 2009 IEEE Ultrasonics Symposium, Rome, Italy. https://doi.org/10.1109/ULTSYM.2009.5441862