Nanomaterials discussed in this book are important building blocks for nanoelectronic and nanophotonic device fabrications. Methods to synthesize and functionalize them are crucial to enable their applications in these areas. This book provides readers with detailed description and discussions on synthesis and functionalization of recent optically active nanomaterials. This book is an important tool for researchers in the nanomaterial field. It will be also a great reference for college students to master overall knowledge in the field.