Arrays of periodically disposed silver and gold nanowires grown in porous alumina can be post-fabricated to produce plasmonic devices that show intense SERS activity and useful properties such as plasmonic transport that allows one to excite one end of a nanowire bundle to detect molecules by SERS that reside at the opposite end, many microns away. Likewise, one can use a properly engineered DNA apatmer to link nanoparticles together and detect the SERS signal of multiple reporter molecules adsorbed on the nanoparticles resulting from the interaction of the aptamer with one or two target molecules thereby amplifying the SERS effect and allowing a single analyte event to be routinely detected. The talk will illustrate such applications of gold and silver nanostructures.

Engineering silver and gold nanowires and nanoparticles for sensing applications

245th National Meeting (2013)

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