Determination of electrostatic force and its characteristics based on phase difference by amplitude modulation atomic force microscopy

Table 1 Comparison of electrostatic forces obtained by the two methods under 5 V

Tip-sample distance (nm)	Electrostatic force obtained by energy dissipation method [5] (nN)	Electrostatic force obtained in this paper (nN)	Error
10	0.833	0.57976	−30.40%
15	0.667	0.54998	−17.54%
20	0.583	0.52351	−10.20%
25	0.522	0.49970	−4.27%