Flexible electronics is a technology that is used to produce electronic devices that are constructed from stretchable or conformable substrates, from materials such as plastic, flex glass, metal foil and paper. Stretchable electronics are devices that are made up of electronic circuits or materials that are assembled onto stretchable substrates. Flexible and stretchable electronics is emerging as a new technology and attaining a wide range of applications, because its components can be twisted, and compressed to intricate non-planar surfaces. These electronic devices have the potential to be used in a variety of fields, including biomedical engineering, soft robotics, human machine interfaces, epidermal electronic devices, electronic skins and healthcare monitoring. This book explores all the important aspects of flexible and stretchable electronics in the present day scenario. It presents researches that have transformed the research in this field and have aided its advancement. The readers would gain knowledge that would broaden their perspective about this area of electronics through this book.