Emerging wearable technologies promise transformative capabilities in personal health, environmental monitoring, and smart textiles. However, current wearable systems often rely on rigid components, adhesives, or external batteries that limit comfort, adaptability, and long-term usability. These limitations create significant barriers to continuous, real-world use, hindering progress toward truly seamless integration of electronics with the human body. To address these challenges, this project introduces a new class of flexible nanofibrous devices that are lightweight, breathable, self-powered, and capable of converting body motion into usable energy while simultaneously performing on-body sensing. By leveraging advanced materials science and innovative fabrication techniques, these nanofibrous devices eliminate the dependence on bulky, rigid components, significantly enhancing user comfort and enabling long-term use. The resulting technologies have broad potential applications spanning fitness, rehabilitation, environmental sensing, and consumer wearables, where comfort, durability, and reliability are critical. Beyond technological innovation, this project also contributes substantially to STEM education by providing multidisciplinary research opportunities for students, integrating new course modules into the NJIT engineering curriculum, and engaging with K–12 outreach programs designed to inspire and broaden participation in STEM fields. This project focuses on design