Figure 5
From: Controllable Tunneling Triboelectrification of Two-Dimensional Chemical Vapor Deposited MoS2
Accumulation of triboelectric charges with rubbing cycles increased. (a) Surface potential images after rubbing with 0, 4, 8 and 12 cycles. (b) Cross-section profiles between the lines in a. (c) Charge density and surface potential difference as a function of frictional cycles number.
