This book provides an up-to-date introduction to the field of functional materials and thin films, encompassing newly developed technologies and fundamental new concepts. The focus is on the critical areas of novel thin films such as sol-gel synthesis of membrane, ferroelectric thin films and devices, functional nanostructured thin films, micromechanical analysis of fiber-reinforced composites, and novel applications. An important aspect of the book lies in its wide coverage of practical applications. It introduces not only the cutting-edge technologies in modern industry, but also unique applications in many rapidly advancing fields. This book is written for a wide readership including university students and researchers from diverse backgrounds such as physics, materials science, engineering and chemistry. Both undergraduate and graduate students will find it a valuable reference book on key topics related to solid state and materials science.