Picture of athlete cycling

Open Access research with a real impact on health...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the Physical Activity for Health Group based within the School of Psychological Sciences & Health. Research here seeks to better understand how and why physical activity improves health, gain a better understanding of the amount, intensity, and type of physical activity needed for health benefits, and evaluate the effect of interventions to promote physical activity.

Explore open research content by Physical Activity for Health...

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.