Characterization of doped polymer based layered thin films for metamterial applications

Thin film of silver nanoparticle (Ag)-PMMA composite was synthesized and characterized. The angle of minimum reflectivity (SPR angle) for the composite film was figured out using the Kretschmann two prism set up. The shift in the SPR angle of the composite film from that of the pure silver film was analyzed. Using Bruggemann effective medium theory, the effective permittivity of the composite film was determined.