This book explores various unique characteristics of graphene quantum dots and their potential applications in a variety of fields. It provides an in-depth investigation of the present state of the art in graphene quantum dots, composites, hybrid structures, and other related topics. Various topics covered in this book are synthesis and characterization of graphene quantum dots, modelling and simulation, nanoscale applications nanosensors, bio-nanosensors, energy applications, industrial applications, healthcare applications, textile applications, and many more. Given the contents, this book is highly useful for material scientists and also the researchers and professionals in the areas of chemistry and physics.