This book presents an innovative methodology to fabricate nanostructured piezoelectric composite fibers with wearable technologies application as an energy generator and/or sensors. It reports on methods of piezoelectric fiber formation and development of novel textile structures (weave, knit, braid, coil) with embedded electrodes. The flexibility and small diameter of the final fiber make it possible to use them in garment without affecting structure of comfort. The performance of the fiber generators was evaluated through different applications such as air and water sensor, health and movement monitoring, and energy generator. The book targets a wide readership including materials scientists, electrical engineering, soft robotics, Internet of things, electronic textiles, and wearable technology.

Dr. Fatemeh Mokhtari graduated from the Intelligent Polymer Research Institute (IPRI) at the University of Wollongong, Australia. She holds a B.Sc. degree in textile engineering from Yazd University, Iran, and M.Sc. degrees from Amirkabir University of Technology, Tehran, Iran. Her research interests include the fabrication and characterization of micro/nanofibers of functional materials for piezoelectric sensors, transducers, and energy storage/harvesting applications.

Introduction.- Liquid Crystal Material for Microwave Applications.- Microwave Material Characterization.- 2D Electronic Beam Steering Phased Array.- Polarization Agile Antennas in LC Technology.- Conclusion and Outlook.