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. 2017 Jan 31;7:41891. doi: 10.1038/srep41891

Figure 9. The adhesion force and friction force of the long plasma-treated graphene nanosheets before and after thermal reduction.

Figure 9

The plasma treatment time are: (a) 3 s, (b) 6 s, (c) 9 s, and (d) 12 s respectively. Where PLA and TR represent plasma treatment and thermal reduction respectively, B and A are the abbreviation of before and after respectively.