Laser-engraved graphene for flexible and wearable electronics

Laser-engraved graphene (LEG) has been applied increasingly in flexible electronics over the past decade owing to its unique physical and chemical properties, shown great promise energy controls, sensing, telemedicine. In situ laser engraving empowered with additional versatilities such as miniaturized patterning, tunable composition, controllable morphology, environmental friendliness. In this review, technological advances of LEG from synthesis applications wearable electronic devices are summarized. Specifically, use designing next-generation nanogenerators, batteries, supercapacitors, sensors, gas biosensors, wearable/telemedicine systems is discussed. An outlook related LEG-based key bottlenecks identified.