Skip to main page content
Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2020 Jan 28;31(20):205703.
doi: 10.1088/1361-6528/ab70cd. Online ahead of print.

Superlubricity Between a Silicon Tip and Graphite Enabled by the Nanolithography-Assisted Nanoflakes Tribo-Transfer

Affiliations

Superlubricity Between a Silicon Tip and Graphite Enabled by the Nanolithography-Assisted Nanoflakes Tribo-Transfer

Tian-Dong Sha et al. Nanotechnology. .

Abstract

Superlubricity between a cone-shaped (sharp) silicon tip and graphite remains a challenge in the nanotribology field. In this paper, an efficient method of achieving superlubricity between a cone-shaped silicon tip and graphite was proposed. Graphite nanoflakes were transferred onto the silicon tip by repeatedly rubbing against the scratches produced by nanolithography on a graphite surface. The superlubricity between the graphite nanoflakes-wrapped tip and highly oriented pyrolytic graphite (HOPG) was attained, and the friction coefficient was reduced to 0.0007. At low normal loads, the frictional force was small and showed a strong correlation with the sliding angle, but as the normal load increased, this dependence gradually decreased. It was firstly found that the transferred graphite nanoflakes on the contact zone of the silicon tip could be transformed into amorphous carbon layers induced by the shear force and high pressure during the superlubricity test process.

Similar articles

See all similar articles

LinkOut - more resources

Feedback