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

Table 2 Comparison of electrostatic forces obtained by the two methods under 10 V

Tip-sample distance (nm)	Electrostatic force obtained by energy dissipation method [5] (nN)	Electrostatic force obtained in this paper (nN)	Error
10	3.332	2.27661	−31.67%
15	2.668	2.18106	−18.25%
20	2.332	2.09247	−10.27%
25	2.088	2.00994	−3.74%