The fabrication of wearable sensors based on laser-induced graphene

Since laser-induced graphene (LIG) was proposed in 2014, this simple, fast, designable graphene synthesis method has attracted great attention and demonstrated its potential in the field of wearable sensors due to its excellent electrical conductivity, flexibility, and high porosity. This review provides an overview of the influence of various laser parameters on LIG morphology and physical properties during the LIG engraving process, as well as the effects of different carbon precursors on the properties of fabricated LIG. The doping and modification of LIG are highlighted in terms of both pretreatment doping and post-processing doping methods. Then various applications and mechanisms of LIG-based wearable sensors are presented and discussed. Current limits, challenges, and prospects of LIG-based wearable sensors are given at the end of this work.