This book comprises recent researches and advances in the field of smart actuators and sensors. The objective of this book is to sum up all the technical researches regarding smart actuators and sensors. Researches accomplished by experts around the globe are included in this book. The book will allow the reader to appreciate diverse points of view, engineering techniques and tools that must be considered together when designing and realizing smart actuation and sensing systems. It discusses important topics regarding smart fluids, smart transducer applications and piezo-based systems.