This book has been thoroughly revised and upgraded to cover the basic and fundamental aspects of nanoscience, nanomaterials and development of nanotechnology. The book has been prepared to meet the needs of undergraduate and postgraduate students of different disciplines like chemistry, physics, materials science, nanoscience, etc. Highlights of the book ? Dimension of nanoregime ? Nanotechnology in the ancient days and nature ? Moore's law and nanoelectronics ? Different types of nanomaterials?0D, 1D, 2D and 3D ? Bulk nanomaterials?nanocrystalline materials, nanocomposites, nanoporous materials, metal?organic frameworks (MOFs), porous organic polymers (POPs), inorganic?organic hybrid nanocomposites ? Quantum mechanics of low dimensional systems ? Quantum confinement (QC) effect