Ultra-Sensitive Colorimetric Plasmonic Sensing and Microfluidics for Biofluid Diagnostics Using Nanohole Array

Figure 7

SEM image of the plasmonic device fabricated using replica molding method. (a) SEM (top view) image of polymer nanohole structure before deposition of metal. (b) SEM (top view) image of nanohole structure after 90 nm deposition of Ag. Top (c) and cross-sectional (d) view SEM images of plasmonic device showing the nanoparticles inside the nanohole structure [46].

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