PHYS 42 |
| Optical detection through an optical fiber is of interest in many applications where in-situ or in-vivo measurements in complex environments are needed. Remote spectroscopic methods that can provide rapid identification of molecules through the spectral analysis of their chemical fingerprints are of tremendous interest for in-vivo measurements and in micro-analytical systems. Raman spectroscopy combines these advantages since can be coupled to microscopy measurements and may be interfaced with an optical fiber for both excitation and collection of the signal. We have investigated the fabrication and the Raman enhancement ability of an array of sharp structures that were formed at the surface of an optical fiber bundle coated with a thin layer of gold. Our approach introduces an easy, versatile and reproducible experimental method to design and fabricate three dimensional SERS active micrometer-sized platforms where the areas exhibiting large enhancement are organized in a regular pattern.
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Spectroscopy, Chemistry, and Imaging through Nanophotonics
8:00 AM-12:05 PM, Sunday, April 6, 2008 Morial Convention Center -- Rm. 340/341, Oral
Division of Physical Chemistry |
