Chemical Sensors 8

This ECS Transactions issue is a compilation of papers presented at the PRiME 2008 Joint International Meeting, held in Hawaii from October 12 - October 17, 2008. The papers presented covered the research and development in the field of chemical (gas, ion, bio and other) sensors, including molecular recognition surface, transduction methods, and integrated and micro sensor systems.

Key features include: Self-assessment questions and exercises Chapters start with essential principles, then go on to address more advanced topics More than 1300 references to direct the reader to key literature and further reading Highly illustrated with 450 figures, including chemical structures and reactions, functioning principles, constructive details and response characteristics Chemical sensors are self-contained analytical devices that provide real-time information on chemical composition. A chemical sensor integrates two distinct functions: recognition and transduction. Such devices are widely used for a variety of applications, including clinical analysis, environment monitoring and monitoring of industrial processes. This text provides an up-to-date survey of chemical sensor science and technology, with a good balance between classical aspects and contemporary trends. Topics covered include: Structure and properties of recognition materials and reagents, including synthetic, biological and biomimetic materials, microorganisms and whole-cells Physicochemical basis of various transduction methods (electrical, thermal, electrochemical, optical, mechanical and acoustic wave-based) Auxiliary materials used e.g. synthetic and natural polymers, inorganic materials, semiconductors, carbon and metallic materials properties and applications of advanced materials (particularly nanomaterials) in the production of chemical sensors and biosensors Advanced manufacturing methods Sensors obtained by combining particular transduction and recognition methods Mathematical modeling of chemical sensor processes Suitable as a textbook for graduate and final year undergraduate students, and also for researchers in chemistry, biology, physics, physiology, pharmacology and electronic engineering, this bookis valuable to anyone interested in the field of chemical sensors and biosensors.

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.

The chemical sensor plays an essential role in the fields of environmental conservation and monitoring, disaster and disease prevention, and industrial analysis. A typical chemical sensor is a device that transforms chemical information in a selective and reversible way, ranging from the concentration of a specific sample component to total composition analysis, into an analytically useful signal. Much research work has been performed to achieve a chemical sensor with such excellent qualities as quick response, low cost, small size, superior sensitivity, good reversibility and selectivity, and excellent detection limit. This book introduces the latest advances on chemical sensors. It consists of 15 chapters composed by the researchers active in the field of chemical sensors, and is divided into 5 sections according to the classification following the principles of signal transducer. This collection of up-to-date information and the latest research progress on chemical sensor will provide valuable references and learning materials for all those working in the field of chemical sensors.

Chemical sensors are integral to the automation of myriad industrial processes, as well as everyday monitoring of such activities as public safety, engine performance, medical therapeutics, and many more. This massive reference work will cover all major categories of chemical sensor materials and devices, and their general functional usage...from monitoring and analyzing gases, to analyzing liquids and compounds of all kinds. This is THE reference work on sensors used for chemical detection and analysis. In this final volume of the Chemical Sensors will be found the latest in new chemical sensor applications including remote chemical sensing for such applications as atmosphere monitoring , new uses for electronic "noses" and "tongues," wireless chemical sensors, and new future directions for chemical sensors in industry, agriculture, and transportation.

At the beginning of this book, and in the absence of guidance from IUPAC, it is appropriate to clarify the term 'chemical sensor'. A chemical sensor may be defined as a simple-to-use, robust device that is capable of reliable quantitative or qualitative recognition of atomic, molecular or ionic species. It is hard to imagine a field of applied chemistry in which a significant impact could not be made by such a device. Undoubtedly, it is this potential that has fuelled the contemporary preoccupation with chemical sensors. An unfortunate side-effect of this otherwise welcome interest is the use of the term 'chemical sensor' to add the chemical equivalent of a 'High-Tech gloss' to a rather ordinary device, publication, conference or research group. This loose usage of terminology is responsible in part for the ambiguity that surrounds many chemists' concepts of the form and function of chemical sensors. Further ambiguity arises from the extravagant claims that have been made for some sensors, and the impression that has been given of much 'verging-on-a-breakthrough' research. The research chemist engaged in sensor development should be mindful of the fact that the ultimate target for these devices is the real world, and that a successful laboratory device operating under well-defined conditions and careful calibration does not constitute a chemical sensor. Research into chemical sensors is not a recent phenomenon; it has been under way for over 80 years.

Chemical sensors are integral to the automation of myriad industrial processes, as well as everyday monitoring of such activities as public safety, engine performance, medical therapeutics, and many more. This massive reference work will cover all major categories of chemical sensor materials and devices, and their general functional usage...from monitoring and analyzing gases, to analyzing liquids and compounds of all kinds. This is THE reference work on sensors used for chemical detection and analysis. In this third volume will be found new applications for chemical sensing, using materials developments in polymers, calixarenes, biological and biomimetic systems, novel semiconductors, and ionic conductors.