Eur. Phys. J. D 43, 155-158 (2007)
https://doi.org/10.1140/epjd/e2007-00064-2

Fabrication and characterization of a granular film consisting of size-selected silver nanoparticles: application to a SERS substrate

¹ Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
² CREST, Japan Science and Technology Agency (JST), c/o Department of Chemistry, Keio University, Yokohama, 223-8522, Japan

Corresponding author: ^a nakajima@chem.keio.ac.jp

Received: 23 July 2006
Revised: 2 November 2006
Published online: 24 May 2007

Abstract

Uniform-sized silver nanoparticles with average diameter of 13.7 nm have been prepared in the gas-phase by combining a pulsed laser ablation method with a low pressure-differential mobility analyzer (LP-DMA). By depositing the silver nanoparticles onto a silicon substrate, a granular film consisting of size-selected silver nanoparticles has been fabricated and its morphology and electronic properties have been examined using transmission electron microscopy (TEM) and UV-visible absorption spectroscopy. This granular silver film serves as a highly active substrate for surface-enhanced Raman scattering (SERS).