Interwall Friction and Sliding Behavior of Centimeters Long Double-Walled Carbon Nanotubes.

Zhang, Rufan; Ning, Zhiyuan; Xu, Ziwei; Zhang, Yingying; Xie, Huanhuan; Ding, Feng; Chen, Qing; Zhang, Qiang et al. · Nano Lett · 2016

basic_science · Level V

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Abstract

Here, we studied the interwall friction and sliding behaviors of double-walled carbon nanotubes (DWCNTs). The interwall friction shows a linear dependence on the pullout velocity of the inner wall. The axial curvature in DWCNTs causes the significant increase of the interwall friction. The axial curvature also affects the sliding behavior of the inner wall. Compared with the axial curvature, the opening ends of DWCNTs play tiny roles in their interwall friction.