Figure 9.

UME and maximum contact force at constant impact speed (50 m/s) with various impact masses. UME and maximum contact force at constant impact speed (50 m/s) with various impact mass (from 8.7 × 10−19 to 7.1 × 10−17 g), and constant impact mass (2.8 × 10−18 g) with various impact speeds (from 10 to 90 m/s), for five-buckyball systems.

Xu et al. Nanoscale Research Letters 2013 8:54   doi:10.1186/1556-276X-8-54
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