Remote Spectroscopy Below the Diffraction Limit

Abstract

The ability to confine and direct light propagation at the surface of metals via surface plasmon polaritons has been at the centre of the growth in interest in nanoscale engineering of noble metals over the past decades. This chapter reviews the recent development in our laboratories of novel techniques for remote Raman and fluorescence sensing using sub-diffraction limit diameter metallic nanowires as plasmonic waveguides. Applications of remote sensing for chemical and live cell spectroscopy are discussed as well as insights into super-resolution imaging of metallic nanostructures.