New plasmonic materials and fabrication tools for near- and mid-infrared sensing and spectroscopy

cited By 0; Conference of 16th Meeting of the Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing Conference ; Conference Date: 21 April 2015 Through 23 April 2015; Conference Code:112761International audienceWith progress in nanofabrication, new strategies have become available that allow precise control of nanoscale optical fields using metallic nanostructures. Here we review recent progress in the control of optical resonances in metal nanostructures for applications in sensing and spectroscopy. We discuss the use of new techniques, such as helium-ion beam milling, which allow precise sculpting of nanometer-scale gaps; new materials such as metal oxides, which have a response somewhere inbetween that of conventional dielectrics and noble metals; and new designs such as L-shaped gap antennas which allow controlling the polarization state of light through near-field interactions between closely spaced antennas