This book focuses on cell and molecular based sensors using micro/nano devices as transducers. It introduces the basic information of micro/nano cell and molecular sensors. Meanwhile the basic structures and properties of micro/nano material and the applications are also provided. The topics covered provide a comprehensive summary of the current state of micro/nano cell and molecular sensors as well as their future development trends, which would be of great interest to the interdisciplinary community active in this area. It is written for researchers, engineers and biologists and who engage in interdisciplinary research and applications.