Laser Writing of Metallic Nanostructures in a Polymer Matrix with Applications to Metamaterials

摘要

We present a novel laser-based method for fabricating metallic nanostructures in a polymer matrix with sub-wavelength resolution. The method involves two-photon lithography (TPL) in which a femtosecond-pulsed laser induces two-photon initiated in situ reduction of a metal salt and simultaneous polymerization of a negative photoresist. We discuss details of the laser writing process and demonstrate various fabricated functional structures along with simulations of their electromagnetic behavior.