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

Veres, I.A. and Profunser, Dieter M. and Wright, Oliver B. and Matsuda, Osamu and Lang, Udo (2009) Real-time simulations and experiments on ultrahigh frequency surface waves in micro-structured phononic crystals. In: 2009 IEEE Ultrasonics Symposium, 2009-09-20 - 2009-09-23. (https://doi.org/10.1109/ULTSYM.2009.5441862)

Full text not available in this repository.Request a copy

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.

Sorry the service is unavailable at the moment. Please try again later.