Nanostructured copper/porous silicon hybrid systems as efficient sound-emitting devices

Nanoscale Res Lett. 2014 Sep 11;9(1):487. doi: 10.1186/1556-276X-9-487. eCollection 2014.

Abstract

In the present work, the photo-acoustic emission from nanostructured copper/porous silicon hybrid systems was studied. Copper nanoparticles were grown by photo-assisted electroless deposition on crystalline silicon and nanostructured porous silicon (nanoPS). Both the optical and photo-acoustic responses from these systems were determined. The experimental results show a remarkable increase in the photo-acoustic intensity when copper nanoparticles are incorporated to the porous structure. The results thus suggest that the Cu/nanoPS hybrid systems are suitable candidates for several applications in the field of thermoplasmonics, including the development of sound-emitting devices of great efficiency.

Keywords: Copper; Hybrid system; Nanostructure; Porous silicon; Thermoplasmonics.