A Transparent, Self-Healing Triboelectric Sensor for UV and Cardiovascular Monitoring During Outdoor Activities

Since their discovery, skin-interfaced triboelectric sensors have gained attention due to their self-powered behavior, low cost, and pool of materials used in their fabrication. Recent advancements have focused on enhancing the sensing functionality and wearability of these sensors, enabling them to simultaneously detect multiple environmental factors while ensuring better integration with human skin. Herein, a transparent triboelectric sensor capable of monitoring cardiovascular activity, and UV exposure was designed. Hinged on nanoscale semiconductor-based heterojunction, the designed polymer nanocomposite showcases skin-like breathability and self-healability. Together, the enhanced wearability and functionality of this sensor represent a step forward in the exploration of multifunctional skin-interfaced sensors.