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N.C. Lindquist, T.W. Johnson, J. Jose, L.M. Otto and S.-H. Oh Ultrasmooth metallic films with buried nanostructures for backside reflection-mode plasmonic biosensing Annalen der Physik 524

Version of Record online: 24 SEP 2012 | DOI: 10.1002/andp.201200144

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A new plasmonic device architecture based on ultrasmooth metallic surfaces with buried plasmonic nanostructures is presented. Using template-stripping techniques, ultrathin gold films with less than 5 Å surface roughness are optically coupled to an arbitrary arrangement of buried metallic gratings, rings, and nanodots. As a prototypical example, linear plasmonic gratings buried under an ultrasmooth 20 nm thick gold surface for biosensing are presented.

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