There are so many chemical sensor books on the market that adding one more would seem to be a rather unnecessary exercise. My aim has been to provide material that college or graduate level instructors could use when teaching this subject. The focus is on operating principles, rather than on description of specific sensor or even types of sensors. People who regularly referee sensor manuscripts and research proposals may also find it useful as a reference, for testing one or another dubious proposed sensing scheme. Unfortunately, some strange ideas often get through the review process and become a permanent part of the knowledge database. A "food-for-thought" section has been added at the end of each chapter, which is intended to provoke probing questions about such "schemes". Since this is a never-ending process a "food-for-thought" website has been established as a permanent "blog" that supplements this book. It can be accessed at: http://www.chemistry.gatech.edu/faculty/Janata/

Zusammenfassung
Do not learn the tricks of the trade, learn the trade I started teachinggraduate coursesin chemical sensors in early 1980s, ?rst as a o- quarter (30 h) class then as a semester course and also as several intensive, 4-5-day courses. Later I organized my lecture notes into the ?rst edition of this book, which was published by Plenum in 1989 under the title Principles of Chemical Sensors. I started working on the second edition in 2006. The new edition of Principles of Chemical Sensors is a teaching book, not a textbook. Let me explain the difference. Textbooks usually cover some more or less narrow subject in maximum depth. Such an approach is not possible here. The subject of chemical sensors is much too broad, spanning many aspects of physical and analytical chemistry, biochemistry, materials science, solid-state physics, optics, device fabrication, electrical engine- ing, statistical analysis, and so on. The challengefor me has been to present uniform logical coverage of such a large area. In spite of its relatively shallow depth, it is intended as a graduate course. At its present state the amount of material is more thancan be coveredin a one-semestercourse (45h). Two one-quartercourseswould be more appropriate. Because of the breadth of the material, the sensor course has a somewhat unexpected but, it is hoped, bene?cial effect.

Inhalt

Introduction.General response curve.Origins of selectivity.- Introduction.Equilibrium-based selectivity.Kinetic selectivity.Mass transport selectivity.Design of selective layers.- Introduction.General.Push-pull operation.Thermometers.Equivalent circuits.Examples of thermal chemical sensors.- Introduction.Mass sensors based on piezoelectric materials.Non-piezoelectric mass sensors.- Introduction.General rules of electrochemistry.Nature of interfaces.Nature of the current-Voltage curve.Determination of cell parameters: experimental methods.- Ion sensors.Potentiometric sensors for neutral species.- General considerations.Microelectrodes.Oxygen electrodes.Clark electrode.Amperometric selectivity.Amperometric fuel cells.High temperature limiting current sensors.- Introduction.Chemiresistors.AC conductometric sensors.