Structural superlubricity in graphite flakes assembled under ambient conditions

Nanoscale
He DengQuanshui Zheng

Abstract

To date, structural superlubricity in microscale contacts is mostly observed in intrinsic graphite flakes that are cleaved by shearing from HOPG mesas in situ or friction pairs assembled in vacuum due to the high requirement of ultra clean interface for superlubricity, which severely limits their practical applications. Herein, we report observations on microscale structural superlubricity in graphite flake pairs assembled under ambient conditions, where contaminants are inevitably present at the interfaces. For such friction pairs, we find a novel running-in phenomenon, where the friction decreases with reciprocating motions, but no morphological or chemical changes can be observed. The underlying mechanism for the new running-in process is revealed to be the removal of third bodies confined between the surfaces. Our results improve the understanding of microscale superlubricity and may help extend the practical applications of superlubricity.

References

Jun 15, 1990·Physical Review. B, Condensed Matter·M Hirano, K Shinjo
Oct 1, 1993·Physical Review. B, Condensed Matter·J M MartinT Epicier
Jun 5, 1999·Science·G HeM O Robbins
Apr 20, 2004·Physical Review Letters·Martin DienwiebelHenny W Zandbergen
Mar 10, 2007·Physical Chemistry Chemical Physics : PCCP·M A PimentaR Saito
Feb 21, 2008·Nano Letters·Alexander A BalandinChun Ning Lau
Mar 21, 2008·Physical Review Letters·Quanshui ZhengLianmao Peng
May 18, 2011·Nanotechnology·Ze LiuQuan-shui Zheng
Sep 26, 2012·Physical Review Letters·Ze LiuQuanshui Zheng
Apr 5, 2013·Nature Nanotechnology·Andrea C Ferrari, Denis M Basko
Jul 9, 2013·Physical Review Letters·Jiarui YangQuanshui Zheng
Jan 31, 2014·Physical Review Letters·Dirk DietzelAndré Schirmeisen
Sep 1, 2014·The Journal of Chemical Physics·Carlo A AmadeiMatteo Chiesa
May 16, 2015·Science·Diana BermanAnirudha V Sumant
Sep 1, 2015·Nature Communications·Wen WangQuanshui Zheng
Feb 27, 2016·Science·Shigeki KawaiErnst Meyer
Jun 29, 2016·Nature Communications·Ebru CihanMehmet Z Baykara
May 13, 2017·Advanced Materials·He LiXianlong Wei
Jun 2, 2017·Nano Letters·Paul E Sheehan, Charles M Lieber
Jul 18, 2017·ACS Nano·Dirk DietzelAndré Schirmeisen
Mar 22, 2018·Nanoscale·Wengen OuyangMichael Urbakh

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Citations

Nov 2, 2019·Small·Yiming SongQuanshui Zheng
Apr 17, 2021·Nature Communications·Xuanyu HuangQuanshui Zheng
Aug 19, 2021·ACS Applied Materials & Interfaces·Xiaopeng RuanFeng Zhou
Dec 29, 2020·ACS Nano·Yu ZhaoKonstantinos G Dassios
Aug 26, 2020·ACS Applied Materials & Interfaces·Yanmin LiuJianbin Luo

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Methods Mentioned

BETA
atomic force microscopy
AFM

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