The field of nanoscienceand nanotechnology has been rapidly expanding in the last decade, with theexciting new discoveries involving nanomaterials of various sizes and shapes.In the first part of my talk, I will present my research on nanomaterials(carbon nanotubes, graphene and inorganic nanowires). Application ofnanomaterials in nanocomposites (polymer-inorganic nanowire composites) andrenewable energy (first demonstration of graphene based electrochemicalsupercapacitors) will also be discussed. In the second part of the talk, I willpresent my recent work on ‘liquid plasmonics’ and on the use of 3D-pyramidalgrating structures for bio-molecular sensing. Liquid plasmonics involves themanipulation of surface plasmon polaritons (SPPs) in a liquid plasmonic metalby changing its physical phase. This was achieved by the fabrication of 1D Gagratings using a simple molding process. The solid and liquid phases were foundto exhibit different plasmonic properties, where light coupled to SPPs moreefficiently in the liquid phase. Demonstration of real-time sensing ofbio-molecules using 3D-pyramidal grating structures will be also be touchedupon.