Mechanical Properties of Nanomaterials and Biomaterials: Dye Sensitized and Hybrid Solar Cells and Nanomorphology Electron Transfer Property of Nanojunctions and Spectroscopy Mechanical Behaviour of Nanostructured Materials: Role of Structure, Defects and Microstructure Nanomaterials for Hydrogen and Gas Storage Tribological Studies of Nanostructure Evolution and Transport in Nanolubricants