Low cost lithographic fabrication of tunable plasmonic nanostructures

In this work different fabrication methods based on low cost lithographic techniques have been developed in order to create planar distributions of plasmonic nanostructures with tailored optical functionalities. In order to achieve sharp Localized Surface Plasmon Resonance (LSPR) resonances in the visible and IR range, the geometry of the fabricated nanostructures have been optimized through numerical modelling. The optical properties and the sensing capabilities of different metal nanostructures have been investigated, exploring several key parameters for sensitivity enhancement of traditional LSPR biosensors.