Figure 3
From: A Langevin equation that governs the irregular stick-slip nano-scale friction
(a,b) The variation of drift D1 and diffusion D2 coefficients with respect to nano-friction fluctuations f in two conditions: with (triangles) or without corrected term (dots). For both conditions, drift and diffusion terms show linear and quadratic trends, respectively. In (b) the fourth order coefficient D4 (asterisks) is also shown which is negligible compared with D2. (c,d) Step size Δx dependence of D1 and D2 for f = −0.2 nN and f = −0.5 nN.
