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Resolution: standard / high Figure 2.
AFM images of MoS2 nanotubes laid flat on the HOPG and friction results. (a) The nanotube, 230 nm in diameter, with marked place of the friction test; (b) the corresponding friction results using loads from 15 to 90 nN, COF 0.091 ± 0.005;
(c) the nanotube, 240 nm in diameter, where three scan areas were tested; and (d) the corresponding friction results using loads from 3 to 15 nN, average COF 0.080
± 0.006.
Jelenc and Remskar Nanoscale Research Letters 2012 7:208 doi:10.1186/1556-276X-7-208 |