Sensors are the eyes, ears, and more, of the modern engineered product or system--including the living human organism. This authoritative reference work, part of Momentum Press's new Sensor Technology series, edited by Joe Watson, will offer a complete review of all sensors and their associated instrumentation systems now commonly used in modern medicine. The field of solid state chemical sensor design is a research field with an increasing interest due to the demands of reliable, inexpensive and portable systems for environmental monitoring, indoor air quality, food quality control, military and many other applications. Many solid state chemical sensors are now commercially available and researchers are making efforts to develop next-generation solid state sensors, having all the necessary requirements, such as small size, low production costs and low power consumption. The goal of this book is to provide a critical assessment of the new trends in the field of solid state chemical sensor, by describing their working principle and various applications. Volume 1 includes descriptions of solid state sensors such as conductometric or resistive gas sensors, Schottky- , FET-, capacitance-, and pyroelectric- type chemical sensors. Pellistors, mass sensitive and acoustic-wave sensors are the objects for analysis as well. Approaches used for chemical sensors micro-fabrication and integration are discussed in present volume as well. So, the volume gives a survey of the latest state of technology and contributes to preparing the ground for future achievements in both solid state sensor research and development of solid state sensor technologies. The reader will find a strong emphasis not only on what and how but also on why.