Nanotechnology is a branch of science and technology that deals with studying and manipulating materials at the nanoscale. It involves the use of nanoscale materials, devices, and systems to create new and innovative technologies for various fields such as medicine, electronics, energy, and materials science. The foundation of nanotechnology lies in the ability to control and manipulate the properties of materials at the atomic and molecular level.The unique properties exhibited by nanoparticles are attributed to their high surface area to volume ratio, which leads to a significant increase in reactivity, chemical activity, and physical properties. Hence, the study and development of nanomaterials have the potential to revolutionize the way we live, work, and interact with the world around us. Nanotechnology has a wide range of applications, from the development of more effective and efficient drug delivery systems to the creation of more advanced computational devices, and the possibilities are endless. However, there are also concerns about the potential risks associated with nanomaterials, and extensive research is necessary to ensure their safe use and handling.In this book we discuss topics such as: Introduction to Nanotechnology: Definition and History of Nanotechnology, Importance and Applications of Nanotechnology, Key Components of Nanotechnology Atomic Structure and Bonding: Introduction to Atomic Structure and Bonding, Quantum Mechanics, Chemical Bonding and its Different Types Nanoparticles: Introduction to Nanoparticles, Types of Nanoparticles and their Formation, Properties of Nanoparticles Nanomaterials: Introduction to Nanomaterials, Types of Nanomaterials and their Applications, Properties of Nanomaterials Nanofabrication: Introduction to Nanofabrication, Top-Down and Bottom-Up Approaches, Techniques for Nanofabrication Characterization Techniques: Introduction to Characterization Techniques, Imaging Techniques, Spectroscopy Techniques Nanoelectronics: Introduction to Nanoelectronics, Nanoscale Devices and their Applications, Challenges and Future Directions in Nanoelectronics Nanomedicine: Introduction to Nanomedicine, Nanoparticles in Drug Delivery, Diagnostic and Imaging Applications of Nanomedicine Environmental Impacts and Safety: Introduction to Environmental Impacts and Safety of Nanotechnology, Toxicity of Nanoparticles and Nanomaterials, Precautions and Regulations for Safe Handling of Nanomaterials Future Directions of Nanotechnology: Introduction to Future Directions of Nanotechnology, Emerging Applications of Nanotechnology and Challenges and Opportunities for Nanotechnology in the Future. Quizzes are provided at the end of each section.