Fig. 4: The effect of atomic vibration on the curling of GNSs at normal and cryogenic temperatures. | Nature Communications

Fig. 4: The effect of atomic vibration on the curling of GNSs at normal and cryogenic temperatures.

From: Acquisition of molecular rolling lubrication by self-curling of graphite nanosheet at cryogenic temperature

Fig. 4

a In-situ Raman intensity variation upon varying temperature. b Interfacial microstructure of graphite at different temperatures friction process. c Schematic diagrams of the stress transmission at normal and cryogenic temperatures. d, e Comparison of the atomic stress distributions at different temperatures during MD simulations. Quantitative statistics of atomic stress distribution are obtained by counting all atoms in the nanosheets with 70 K and 300 K, respectively, and the two systems possess the same driving stress. Qualitative atomic stress distribution is shown by selecting partial atoms in one of nanosheet (at 12.00 ns and 70–300 K system as well as 2.96 ns and 300–570 K system).

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