SURFACE-ENHANCED RAMAN SCATTERING BASED ON NANOMATERIALS AS SUBSTRATE
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United States of America Patent
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app pub date -
Apr 21, 2008
filing date -
Feb 11, 2008
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Abstract
The present invention relates to an arrangement of nanomaterials which act as a substrate for a surface-enhanced Raman scattering. A method of Raman scattering and a method of manufacturing the substrate are also disclosed. The substrate comprises a plurality of nanostructures, for example nanowires, and metal nanoparticles are arranged on the surface of the nanostructures. The metal nanoparticles are of a material selected from the group comprising Au, Ag, Cu, Fe, Co, Ni, Ru, Rh, Pd, Pt or an alloy. This nano-on-nano arrangement increase the surface area and provides a significant increase in detection sensitivity. A substrate comprising a nanomaterial substrate form of a plurality of nanostructure of a noble metal and noble metal nanoparticles of a different material on the surface of said nanostructure is also disclosed.
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