Design and fabrication of 2-D and 3-D SERS platforms

PHYS 409

Valérie Guieu, guieu@enscpb.fr1, Nicolas Marquestaut1, Sarvesh Varma2, Betty Galarreta2, Laurent Servant, l.servant@ism.u-bordeaux1.fr1, David Talaga1, Neso Sojic, sojic@enscpb.fr1, and François Lagugné-Labarthet, flagugne@uwo.ca2. (1) Institut des Sciences Moléculaires, Université Bordeaux, UMR 5255 CNRS, 351 Cours de la Libération, Talence cedex, 33405, France, (2) Department of Chemistry, University of Western Ontario, 1151 Richmond Street, London, ON N6A5B7, Canada
Due to the inherently weak Raman scattering cross section, the signal of diluted solutions or monolayer films is often difficult to measure or need long acquisition times. However when combined with metallic nanostructured surfaces with gold or silver patterns, the Raman signal can be enhanced by several order of magnitude leading to short acquisition times even for monolayers adsorbed on these structures. We present here results conducted on nanostructured surfaces made of gold and prepared by electron-beam lithography techniques or conventional chemical preparation. 2D and 3D nanostructured were fabricated and associated Raman enhancement quantified. The Raman mapping of these nanopatterns is performed under a confocal Microscope and simultaneous topography is obtained with an atomic force microscope.
 

PHYS Poster Session - Nanostructured Materials and Nanophotonics
7:30 PM-10:00 PM, Wednesday, April 9, 2008 Morial Convention Center -- Hall A, Poster

Division of Physical Chemistry

The 235th ACS National Meeting, New Orleans, LA, April 6-10, 2008