This book unravels the recent studies in the fields of sensors and actuators. A sensor is a device that generates a response for a physical input whereas actuators in general are motors that are used to control or move a system operated by a current, fluid or pressure. These objects are widely used in the manufacturing of machinery, airplanes, medicine, cars, and robotics. This book collaborates researches conducted by experts across the globe. The topics covered in this book will provide a detailed understanding of the design, modelling and applications of sensors and actuators. It will help the readers in keeping pace with the rapid changes in this field.