Influence of external load on friction coefficient of Fe–polytetrafluoroethylene
Hao Xiu-Hong1, 2, Pan Deng1, 2, †, Zhang Ze-Yang1, Wang Shu-Qiang1, 2, Gao Yu-Jin3, Gu Da-Peng1, 2
       

Distributions of (a) the x and (b) z components of the radius of gyration.