Figure 1.

Schematic representation of the template-induced assembly process of gold colloids. Namely, a concentrated drop of colloidal dispersion (a) is sandwiched between a prepatterned PDMS mold and the substrate (b). Upon evaporation of solvent (c), the colloids are assembled in the 2D pattern defined by the stamp. Finally, a superstrate medium is used to index match the glass substrate and produce sharp optical features (d). Inset images show photographs of the process and representative spectra. Scale bar = 1 cm.