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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), ARTN 0.


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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
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Nano-Electronics Centre
Authors :
Henley, SJ
Silva, SRP
Date : 20 February 2006
DOI : 10.1063/1.2178387
Uncontrolled Keywords : Science & Technology, Physical Sciences, Physics, Applied, Physics, THIN-FILMS, SILVER, DEPOSITION, CARBON, GOLD
Related URLs :
Depositing User : Mr Adam Field
Date Deposited : 27 May 2010 14:08
Last Modified : 06 Jul 2019 05:06

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