Picture of neon light reading 'Open'

Discover open research at Strathprints as part of International Open Access Week!

23-29 October 2017 is International Open Access Week. The Strathprints institutional repository is a digital archive of Open Access research outputs, all produced by University of Strathclyde researchers.

Explore recent world leading Open Access research content this Open Access Week from across Strathclyde's many research active faculties: Engineering, Science, Humanities, Arts & Social Sciences and Strathclyde Business School.

Explore all Strathclyde Open Access research outputs...

Dynamic visualization of surface phonons in phononic crystals

Wright, O. B. and Veres, I. A. and Profunser, D. M. and Matsuda, O. and Culshaw, B. and Lang, U. (2011) Dynamic visualization of surface phonons in phononic crystals. Chinese Journal of Physics, 49 (1). pp. 16-22. ISSN 0577-9073

Full text not available in this repository. Request a copy from the Strathclyde author

Abstract

Using ultrashort pulsed optical excitation and interferometric detection, we dynamically image ultrahigh-frequency surface acoustic phonon wavepackets on two-dimensional (2D) phononic crystals. The samples consist of a square lattice of air-filled holes etched in a silicon substrate. Good agreement is found when compared with time-domain finite element numerical simulations. By Fourier transformation, the dispersion relation is derived and stop bands are revealed. The spatial distributions of the acoustic eigenmodes at specific frequencies are also presented.