The book provides experienced as well as young researchers with a topical view of this vibrant field of soft nanotechnology. In addition to elucidating the underlying concepts and principles, major parts of each chapter are devoted to a detailed discussion of the potential and already realized applications of micro- and nanogel-based materials such as biocompatible coatings for implants, multilayer films for controlled drug release, self-healing soft materials or responsive hydrogels that react to varying pH conditions, temperature or light.