Chemical and biological sensing using metallic particles in amplifying and absorbing media
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United States of America Patent
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Apr 8, 2008
Grant Date -
Aug 2, 2007
app pub date -
Jun 13, 2006
filing date -
Jun 13, 2005
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Abstract
A film for surface enhanced raman scattering may be utilized for chemical and biological sensing. The film includes a polymeric layer, and a metallic nanoparticle having a cross-section, the metallic nanoparticle being embedded in the polymeric layer. The polymeric layer has a thickness less than a largest straight line through the cross-section of said metallic nanoparticle. The polymeric layer is selected from a group of absorbing media and amplifying media, and the metallic nanoparticle may be gold. The metallic nanoparticle may also be a shape selected from a group of spheroids and rods.
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