V2O5 nanowires coated yarn based temperature sensor for smart textiles

Smart textiles can sense different stimuli such as pressure, temperature etc., to allow users to react and adapt. Such features are accomplished through integration of various fiber-based sensors and electronic components in textile structures. Yarn is 1-dimensional structure which can be modified to behave as a sensor and can further be integrated with other sensors or electronics to form smart textile by techniques like weaving, knitting, and braiding. In this work, a flexible temperature sensor is reported by modifying a stainless-steel yarn with V2O5 nanowires. The current profile and temperature sensing performance is measured from 5 to 50 °C. The device exhibits sensitivity of 3.7 %/°C and response time of ~9s. The present work demonstrates the potential of using yarn as a flexible temperature sensor that can be used to realize smart textile for wearable and healthcare applications.