SERS amplification by ultra-dense plasmonic arrays on self-organized PDMS templates
Abstract(#br)High density gold nanostructures are grown by thermal deposition on flat and nanostructured polymeric templates by exploiting the extraordinarily low wettability of Au on polydimethylsiloxane (PDMS). Undulated PDMS templates are fabricated by replica molding process (REM) on “masters” prepared by defocused Ion Beam Sputtering (IBS). Closely packed and laterally disconnected Au nanostructures are grown at grazing incidence on the PDMS replica templates exploiting the shadowing instability.