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Laser-nanostructured Ag films as substrates for surface-enhanced Raman spectroscopy

Henley, SJ, Carey, JD and Silva, SRP (2006) Laser-nanostructured Ag films as substrates for surface-enhanced Raman spectroscopy APPLIED PHYSICS LETTERS, 88 (8). ? - ?. ISSN 0003-6951

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Abstract

Pulsed-laser (248 nm) irradiation of Ag thin films was employed to produce nanostructured Ag/SiO2 substrates. By tailoring the laser fluence, it was possible to controllably adjust the mean diameter of the resultant near-spherical Ag droplets. Thin films of tetrahedral amorphous carbon (ta-C) were subsequently deposited onto the nanostructured substrates. Visible Raman measurements were performed on the ta-C films, where it was observed that the intensity of the Raman signal was increased by nearly two orders of magnitude, when compared with ta-C films grown on nonstructured substrates. The use of laser annealing as a method of preparing substrates, at low macroscopic temperatures, for surface-enhanced Raman spectroscopy on subnanometer-thick films is discussed.

Item Type: Article
Uncontrolled Keywords: Science & Technology, Physical Sciences, Physics, Applied, Physics, THIN-FILMS, SILVER, DEPOSITION, CARBON, GOLD
Related URLs:
Divisions: Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Nano-Electronics Centre
Depositing User: Mr Adam Field
Date Deposited: 27 May 2010 14:08
Last Modified: 28 Nov 2013 14:01
URI: http://epubs.surrey.ac.uk/id/eprint/366

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