This book is mainly intended for undergraduate students of materials engineering and electrical engineering. However, the book is also beneficial for graduate students from various multidisciplinary areas including chemistry, physics, materials engineering, electrical engineering, chemical engineering, mechanical engineering, biology and, and bioengineering. Researchers and scientists in the area of nanoscience and nanotechnology can also use the book for constructing the background essential to comprehend the fundamentals of nanomaterials. The world is rapidly moving towards technological evolution since the start of 21st century. Nanotechnology is revolutionizing the world due to its unique and extraordinary applications in almost every area of human activity. The advent of nanotechnology has resulted in the shrinkage of chips and electrical circuits from giant structures to the size of our finger nails. We can store data up to 1 tera-byte in a storage device. The smart watches are performing the tasks as a mini-computer. On the other hand, the development of smart-phone technology has completely revolutionized the world. The applications of nanotechnology in medicine and medical devices have resulted in efficient disease detection and higher cure rates. The use of nanomaterials in electronic sensors and solar cells is also getting great attention now-a-days. There are numerous other applications of nanomaterials in various sectors of materials development which are paving a way towards a nano-age. This introductory book on nanomaterials particularly addresses the necessities of engineers and scientists who require the basic knowledge about nanoscience and nanotechnology, without indulging into the minor scientific details.