This book, Field-Effect Transistors - Fundamentals, Technologies, and Future Innovations, provides readers with a clear yet comprehensive introduction to field-effect transistors (FETs). Written in an accessible, engaging style, the authors guide readers through FET technologies, combining foundational principles with the latest research on next-generation devices. Focusing on innovative techniques for fabrication, miniaturization, and performance, and addressing future challenges with suggested solutions, this book is valuable for material scientists, electrical and electronic engineers, physicists, and others. The book helps readers understand the principles, physics, and operation of FET transistors while providing insight into future developments in the field.