Figure 2 | Scientific Reports

Figure 2

From: Graphene damage effects on radiation-resistance and configuration of copper–graphene nanocomposite under irradiation: A molecular dynamics study

Figure 2

(a) The time evolution of the number of interstitials and vacancies produced in the bulk region of Cu–Gr/R0 and Cu/R0 during the first cascade. The defects distribution of Cu–Gr/R0 at damage peak was shown in the inset. The green, red, and gray spheres represent interstitials, vacancies, and carbon atom in the Cu–Gr/R0, respectively. Note that the number of vacancies and interstitials are equal in the Cu/R0, and only the time evolution of vacancies of Cu/R0 is shown. (b)–(i) The defect distributions obtained after the first cascade, and fifth, tenth, and fifteenth overlapped cascades in the bulk region of Cu–Gr/R0 (panels (a), (b), (c), and (d)) and Cu/R0 (panels (e), (f), (g), and (h)). The green and red spheres represent interstitials and vacancies in the bulk region or pure copper, respectively. The dashed yellow line is to divide the defects at the top and the bottom of the interface.

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