Figure 7From: The synthesis of controlled shape nanoplasmonic silver-silica structures by combining sol-gel technique and direct silver reduction Raman and SERS measurements of crystal violet solution adsorbed. (a) Nanosized silver ring-decorated silica film; (b) spherical silver nanoparticle-decorated silica film; (c) self-assembled silver nanoparticle-decorated silica film.Back to article page