Reviews in Plasmonics 2010

Abstract

In this review, we present our recent progress on “ plasmonic silver nanosheet ” composed of two dimensional (2D) crystalline domains with uniformly sized silver nanoparticles (AgNPs, d = 4.8 ± 0.1 nm). In this 2D crystalline sheet, the localized surface plasmon resonance (LSPR) band was tuned accurately by the interparticle distance of AgNPs via the length of capping organic molecules (myristate, alkanethiolates). A homogeneous coupling of LSPR in 2D crystalline sheet results in not only a significant red-shift, but also a sharpened LSPR band even compared with that in solution dispersion. This flexible, transferable nanosheet, which can trap and transport bulk light at nano-interface, promises new application in the field of bio- and organic devices. This topic is quite new and all the investigations have not been completed yet; nevertheless, we present the principle of this technique together with some potential applications.