The traditional concept of biological sensors, based on enzymatic receptors and potentiometric or amperometric transducers has undergone several genera tions of development. Such types of biosensors have been extensively reviewed, described in many textbooks and commercialized. This book is focused on alternative types of chemical and biological sensors or sensor-like structures and approaches, exploring electrical or electrochemical signal detection. Spe cial attention is paid to applications of linear and nonlinear impedance. Some basic ideas in this field are very old - first described, for example, in the classi cal work by Warburg at the end of the 19th century. Later impedance spectrosco py became a popular approach for studying adsorption of organic molecules on polarizable metal electrodes. However, analytical applications of this approach have only been developed over the last decade, after the establishment of the technology of self-assembled monolayers. In that time, when many scientists were disappointed with attempts to use the Langmuir-Blodgett technique for manufacturing electrochemical devices, the self-assembled monolayers became a viable technology for immobilization of organic molecules on electrodes and for the formation of covalently stabilized receptor layers and even more sophis ticated organic nano- and microstructures. This resulted in the development of numerous analytical applications of impedometric methods which are the main topic of the present book. The book consists of four parts."

Chemical sensors are in high demand for applications as varied as water pollution detection, medical diagnostics, and battlefield air analysis. Designing the next generation of sensors requires an interdisciplinary approach. The book provides a critical analysis of new opportunities in sensor materials research that have been opened up with the use of combinatorial and high-throughput technologies, with emphasis on experimental techniques. For a view of component selection with a more computational perspective, readers may refer to the complementary volume of Integrated Analytical Systems edited by M. Ryan et al., entitled "Computational Methods for Sensor Material Selection".

The traditional concept of biological sensors, based on enzymatic receptors and potentiometric or amperometric transducers has undergone several genera tions of development. Such types of biosensors have been extensively reviewed, described in many textbooks and commercialized. This book is focused on alternative types of chemical and biological sensors or sensor-like structures and approaches, exploring electrical or electrochemical signal detection. Spe cial attention is paid to applications of linear and nonlinear impedance. Some basic ideas in this field are very old - first described, for example, in the classi cal work by Warburg at the end of the 19th century. Later impedance spectrosco py became a popular approach for studying adsorption of organic molecules on polarizable metal electrodes. However, analytical applications of this approach have only been developed over the last decade, after the establishment of the technology of self-assembled monolayers. In that time, when many scientists were disappointed with attempts to use the Langmuir-Blodgett technique for manufacturing electrochemical devices, the self-assembled monolayers became a viable technology for immobilization of organic molecules on electrodes and for the formation of covalently stabilized receptor layers and even more sophis ticated organic nano- and microstructures. This resulted in the development of numerous analytical applications of impedometric methods which are the main topic of the present book. The book consists of four parts."