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Figure 1
Model of AFM, FFM adn AFM tip
Figure 2
Drawing of a ‘duo-servo’ Girling brake
Figure 3
The scheme of the mechanism represented in Fig. 2
Figure 4
Network model, in x and y directions, of FFM on NaF and SFM on HOPG. a) and d) Main circuits, b) and e) auxiliary circuits to obtain xt andyt, and c) auxiliary circuit to obtain the time.
Figure 5
Network model, in x direction, of AFM on graphite. a) Main circuit, b) auxiliary circuit to obtain the force from Lennard-Jones potential, c) auxiliary circuit to obtain xt, d) auxiliary circuit to obtain the time, and e) auxiliary circuit to obtain the square of the distance between the AFM tip and the carbon atom.
Figure 6
Network model. a) and g) Main circuits, b) and h) auxiliary circuits to get x and y, c) auxiliary circuit which control switches, d) auxiliary circuit which controls the transition between stick and slip phases, and e) and f) auxiliary circuits to obtain E2
Figure 10
Decision algorithm used to control the switches.
Figure 7
a) Position of the atoms in the NaF crystal net; b) Elastic force in the tip: Fx in the left hand side and Fy in the right hand side.
Figure 8
a) Position of the atoms in the HOPG crystal net; b) Elastic force in the tip: Fx in the left hand side and Fy in the right hand side.
Figure 9
a) Position of the atoms in the HOPG crystal net; b) Elastic force in the tip, Fx.