Fig. 2: Force-distance curves on atomically thin MoS2 and variation of contact area under different Vg.
From: Electronic friction and tuning on atomically thin MoS2
a Adhesion and electrostatic force as a function of Vg. b Typical force-distance curves measured under the positive Vg. c Typical force-distance curves measured under the negative Vg. d Plots of the friction force versus the applied load on atomically thin MoS2 at Vg = 0 V. e The nanofriction caused by electrostatic force (fele) and additional effect (fextra). f Variation of the true contact area during AFM tip sliding on atomically thin MoS2 under different Vg. Error bars represent standard deviations.
