This postgraduate-level book combines the work of a number of leading academic authors, and provides a snapshot of the progress being made in the development of a variety of sensors used in different application fields. The authors of each chapter describe the principles of operation, characteristics and applications of the sensor-type under consideration, as well as recent advances and prospects for future development. These are areas where advances are ongoing so that there is considerable scope for future development activity. Such sensors are applied in many and varied fields of science, measurement and technology. The book will be of primary interest to electrical and electronics engineers (especially those in instrumentation and analytical science), and will be useful to scientists in diverse application fields such as chemistry, biology etc., and those working in applied chemistry and physics.Author Biography: Dr. Mortaza Vaezi-Nejad grdauated in 1979 from University College London and gained his PhD from Imperial College, London, going on to hold a number of academic appointments. Since 1990 hea has been Reader in the Medway School of Engineering, University of Greenwich, London. He has extensive experience teaching in electronics and measurement, with his main research interest being telematics. He has investigated the electrical properties and application of high resistivity materials and devices for image communications. Recently he has become involved in research and development of transducers for the communications industry and optical image sensors for the process engineering industry. He is a member of the IEE and a Fellow of the Institute of Measurement and Control.