Nanotechnology is the study of the controlling of matter on an atomic and molecular scale and is very diverse, ranging from extensions of conventional device physics to completely new approaches based upon molecular self-assembly, from developing new materials with dimensions on the nanoscale to investigating whether we can directly control matter on the atomic scale. This book gathers and presents data on nanotechnology including the growth of zinc oxide (ZnO) nanostructured films by means of excimer laser ablation; modelling defective carbon nanotubes by molecular mechanics; advances in surface functionalisation of carbon nanotubes; the catalytic, optical, and thermodynamic properties of amorphous TiO2 nanoparticles and others.