LI Xuemei, YIN Jun, ZHOU Jianxin and GUO Wanlin. Large area hexagonal boron nitride monolayer as efficient atomically thick insulating coating against friction and oxidation. Nanotechnology 2014, 25, 105701.

Nanotechnology Volume 25 Number 10
Xuemei Li et al 2014 Nanotechnology 25 105701 doi:10.1088/0957-4484/25/10/105701

Large area hexagonal boron nitride monolayer as efficient atomically thick insulating coating against friction and oxidation
Xuemei Li1, Jun Yin1, Jianxin Zhou and Wanlin Guo

wlguo@nuaa.edu.cn
State Key Laboratory of Mechanics and Control of Mechanical Structures, Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of Education and Institute of Nanoscience, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, People's Republic of China
1 These authors contributed equally to this work.

Dates
Issue 10 (14 March 2014)
Received 16 August 2013, revised 20 November 2013, accepted for publication 25 November 2013
Published 14 February 2014

Abstract

Coating is the most widely applied technology to improve surface properties of substrates, and nanotechnology has been playing an important role in enhancing the coating performance. However, the tunability of surface properties by a single atomic layer remains poorly understood. Here we demonstrate that a chemical vapor deposited hexagonal boron nitride (h-BN) monolayer of large area and high quality can serve as a perfect coating to significantly improve friction, oxidation and electric resistance of the substrates. The exceptional low friction and insulation of h-BN monolayer coating facilitate the characterization of the h-BN film vividly by atomic force microscopy, showing the h-BN monolayer consists of domains with size within a few micrometers. This excellent coating performance together with the exceptional high thermal and chemical stability make the h-BN monolayer a promising coating material.

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