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(Color online) Drawing of the third resonance mode and a graph of the interaction forces. The short-range chemical bonding interaction force was represented with the Morse potential. The vdW forces of the long-range force were calculated with the tip radii of 2, 5, 10, and . is the length, is the length between the longitudinal end and its closed node, is the static deflection, and is the amplitude.
Vertical resolution limit as a function of oscillating amplitude of a cantilever numerically calculated with Eqs. (1) and (2). The short-range force was determined with the Morse potential. The amplitude with the highest vertical resolution was .
Constant frequency shift images of the reconstructed surface obtained with the exposed dangling bond at the tip apex (a) and the terminated dangling bond (b). (c) Line profiles between the corner holes. The resonance frequency and the mechanical quality factor were and 5419, respectively. The amplitude was set to be . The constant resonance frequency shifts were in (a) and in (b).
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