This book provides an insights of the thin film development focusing on the Thin Films Technology: Materials, Characterisation and Applications. The detail topics are divided into five topics ranging from the materials, the techniques and fundamental core of characterisation and the applications towards the future technology. The conventional alloy and bulk samples are well used in different industries, which shows its capabilities to improve properties of a material. However, the ability of the thin films with the same material of the bulk surpasses these properties with and extraordinary and enhanced outcomes especially in mechanical properties. By referencing this book, readers are able to understand the intricacies of thin films development as well as exploring the possibilities of these thin films have for the future of technology. The concepts of elemental selected, deposition techniques and in-depth microstructure understanding are thoroughly written in this book. The last three chapters of this book critically focused on the subgroups of thin films that is of interest in the research and industrial areas. The use of these all chapters enable one to modify and optimize the thin film development in the suitable area of interests. We hope this book will be a guideline as you explore and implore the fascinating world of thin films as the future technology. These thin films has their own distinctive benefits and interests. The possibilities of these thin films could produce offer a limitless boundaries of opportunities in experimental and theoretical applications. The decision between these two ultimately comes down to the preferences, objectives and desired aesthetic outcomes.