▎ 摘　　要

We showed graphene patterning could be triggered with a thermal needle and controlled through pre-infiltrating certain materials into graphene oxide (GO) substrates. With an appropriate O/C molar ratio of GO (>= 0.4) and physical density (>= 3 mg cm(-3)), a cascade reduction reaction of GO films/aerogels was triggered by a needle with a temperature as low as 195 degrees C and propagated at a high rate of up to similar to 320 mm s(-1). The thermal reduction mechanism could also provide a clue for laser writing on GO substrates without the occurrence of cascade reduction for high precision. More importantly, this study offers a promising approach for graphene patterning by triggering with a hot needle and controlling with pre-infiltration of hydrophilic materials.