Modification of matter at an atomic, molecular and supramolecular level is known as nanotechnology. It is a vast field and integrates principles from a number of fields like semiconductor physics, molecular engineering, microfabrication, etc. The progress of nanotechnology has advanced with the growth of areas such as nanomechanics, nanophotonics and nanoelectronics. This book outlines the processes and applications of nanotechnology in detail. It includes some of the vital pieces of work being conducted across the world, on various topics related to nanotechnology. It will help the readers in keeping pace with the rapid changes in this field.