Introduction to flexible electronics The field of flexible electronics has grown rapidly in the last two decades with diverse applications including wearable gadgets and medical equipment. This textbook comprehensively covers fundamental aspects of flexible electronics along with materials and processing techniques. It discusses topics including flexural rigidity flexible PCBs organic semiconductors nanostructured materials material reliability electronic reliability crystalline and polymer materials semiconductor processing and flexible silicon in depth. The text covers advantages disadvantages and applications of processes such as sol gel processing and ink jet printing. Pedagogical features including solved problems and unsolved exercises are interspersed throughout the text for better understanding. The textbook is primarily written for senior undergraduate and graduate students in the field of electrical engineering electronics and communication engineering for a course on flexible electronics. The textbook will be accompanied by teaching resource including solution manual for the instructors