Understanding the importance and application of biosensors is complicated by the diverse range of methods and applications. Furthermore, existing texts are somewhat technical in nature, making it difficult for the novice. This book disseminates information on biosensors in a readable way, suitable to a wide audience with varying levels of experience. Topics include optical imaging, surface plasmon resonance, microcantilevers, electrochemistry, aptamers, fluorescence, electrochemistry, nanobiosensors, and nanowires.