Friction of magnetene, a non-van der Waals 2D material

被引：38

作者：

Serles, Peter ^{[1
]}

Arif, Taib ^{[1
]}

Puthirath, Anand B. ^{[2
]}

Yadav, Shwetank ^{[3
]}

Wang, Guorui ^{[1
]}

Cui, Teng ^{[1
]}

Balan, Aravind Puthirath ^{[2
,4
,5
]}

Yadav, Thakur Prasad ^{[2
,6
]}

Thibeorchews, Prasankumar ^{[2
]}

Chakingal, Nithya ^{[2
]}

Costin, Gelu ^{[7
]}

Singh, Chandra Veer ^{[3
]}

Ajayan, Pulickel M. ^{[2
]}

Filleter, Tobin ^{[1
]}

机构：

[1] Univ Toronto, Dept Mech & Ind Engn, 5 Kings Coll Rd, Toronto, ON M5S 3G8, Canada

[2] Rice Univ, Dept Mat Sci & NanoEngn, Houston, TX 77005 USA

[3] Univ Toronto, Dept Mat Sci & Engn, 184 Coll St, Toronto, ON M5S 3E4, Canada

[4] Univ Manchester, Natl Graphene Inst NGI, Manchester M13 9PL, Lancs, England

[5] Univ Manchester, Sch Chem Engn, Manchester M13 9PL, Lancs, England

[6] Banaras Hindu Univ, Inst Sci, Dept Phys, Varanasi 221005, Uttar Pradesh, India

[7] Rice Univ, Dept Earth Environm & Planetary Sci, Houston, TX 77005 USA

来源：

SCIENCE ADVANCES | 2021年 / 7卷 / 47期

基金：

加拿大自然科学与工程研究理事会; 加拿大创新基金会;

关键词：

MECHANICAL-PROPERTIES; HEMATITE; CONSTANTS; OXIDATION; SURFACES; SPECTRA; FE3O4; IRON;

D O I：

10.1126/sciadv.abk2041

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Two-dimensional (2D) materials are known to have low-friction interfaces by reducing the energy dissipated by sliding contacts. While this is often attributed to van der Waals (vdW) bonding of 2D materials, nanoscale and quantum confinement effects can also act to modify the atomic interactions of a 2D material, producing unique interfacial properties. Here, we demonstrate the low-friction behavior of magnetene, a non-vdW 2D material obtained via the exfoliation of magnetite, showing statistically similar friction to benchmark vdW 2D materials. We find that this low friction is due to 2D confinement effects of minimized potential energy surface corrugation, lowered valence states reducing surface adsorbates, and forbidden low-damping phonon modes, all of which contribute to producing a low-friction 2D material.

引用

页数：9

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