A textile-based strain sensor derived from Kevlar via direct laser patterning

Flexible and wearable strain sensors herald a new era of technological innovations. The utilization of laser irradiation techniques creates conductive pathways to form graphene on a stretchable platform has gained widespread traction. Herein, this paper reports the development of a LIG/Kevlar textile-based strain sensor through direct laser patterning. Applying the optimal laser scribing parameters produces high-quality graphene with a sheet resistance as low as 2.36 Ω/sq. The fabricated strain sensor demonstrates excellent sensitivity (GF
max
= 3215) within a narrow strain range (strain below 10%), an ultrashort response time of 20 ms, and a recovery time of 30 ms. These remarkable attributes enable the integration of graphene onto a wearable glove, unlocking its potential for human finger monitoring.