Thermoacoustic phenomena in metal nanoparticle systems generated by an ultrashort laser pulse

Abstract

The theory of sound generation by nanoparticles under ultrashort laser pulse irradiation has been developed. Metal nanoparticles in an oxide matrix were considered. This case is of practical importance for composite coatings under transient thermal loads. The time dependence of matrix displacement generated by impact of electron pressure under a laser pulse was derived for a 2-D array of nanoparticles. © 2010 IOP Publishing Ltd.