Superlubricity between silicon tip and graphite enabled by the nanolithography assisted nanoflakes trio-transfer.

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ID: 89094
2020
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Abstract
Superlubricity between cone-shaped (sharp) silicon tip and graphite remains a challenge in the nanotribology field. In this paper, an efficient method of achieving superlubricity between 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 graphite surface. The superlubricity between the graphite nanoflakes-wrapped tip and the 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 tests process.
Reference Key
sha2020superlubricitynanotechnology Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Sha, Tiandong;Pang, Hua;Fang, Liang;Liu, Huixian;Chen, Xinchun;Liu, Dameng;Luo, Jianbin;
Journal Nanotechnology
Year 2020
DOI
10.1088/1361-6528/ab70cd
URL
Keywords
nanolithography superlubricity graphite transferred nanoflakes

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