With applications ranging from drug discovery and medical diagnostics to gas sensing and chemical / biological / environmental risk monitoring, molecular sensors or chemosensors offer a valuable tool for engineers and scientists, enabling new MEMS/NEMS devices and providing a variety of nanoscale sensing techniques. This book provides comprehensive coverage of the current and emerging technologies of molecular sensing, explaining the principles of molecular sensor design and assessing the sensor types currently available. Having explained the basic sensor structures and sensing principles, the authors proceed to explain the role of molecular sensors in nano/micro fabrication techniques including MEMS, BioMEMS, MicroTAS, etc. The miniaturization of versatile molecular sensors opens up a new range of nanoscale sensing technology, which is illustrated through case studies of ground-breaking applications in the life sciences and elsewhere. As well as the techniques and devices themselves, the authors also cover data analysis techniques and the critical issues of implantability, biocompatibility and the regulatory framework. The book is aimed at a broad audience of engineering professionals, life scientists and students working in the multidisciplinary area of biomedical device engineering. In addition, it will be valuable for medical professionals and researchers. An online tutorial developed by the authors provides learning reinforcement for students and professionals alike Demystifies the vertical integration of nanomaterials science into device design Reviews of state of the art molecular sensors and nanotechnologies Includes Case Studies of important commercial products Covers the critical issues of implantability, biocompatibility and the regulatory framework