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. 2019 Jun 13;10:2606. doi: 10.1038/s41467-019-10740-w

Fig. 3.

Fig. 3

Two-dimensional (2D)-AFM xz force map and force–distance curve of mica–water interface. a 2D-AFM map. Scale bars represent 0.5 nm (horizontally) and 0.2 nm (vertically). b Force–distance curve extracted from a). The mica is immersed in a 200 mM aqueous solution of KCl