Liquid-Phase Friction of Two-Dimensional Molybdenum Disulfide at the Atomic Scale

Deliang Zhang; Mingzheng Huang; Lasse Hyldgaard Klausen; Qiang Li; Suzhi Li; Mingdong Dong

doi:10.1021/acsami.3c00221

Liquid-Phase Friction of Two-Dimensional Molybdenum Disulfide at the Atomic Scale

Deliang Zhang, Mingzheng Huang, Lasse Hyldgaard Klausen, Qiang Li^*, Suzhi Li^*, Mingdong Dong^*

^*Corresponding author for this work

Interdisciplinary Nanoscience Center - INANO-Fysik, iNANO-huset

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

10 Citations (Scopus)

Abstract

Tribological properties depend strongly on environmental conditions such as temperature, humidity, and operation liquid. However, the origin of the liquid effect on friction remains largely unexplored. Herein, taking molybdenum disulfide (MoS₂) as a model system, we explored the nanoscale friction of MoS₂ in polar (water) and nonpolar (dodecane) liquids through friction force microscopy. The friction force exhibits a similar layer-dependent behavior in liquids as in air; i.e., thinner samples have a larger friction force. Interestingly, friction is significantly influenced by the polarity of the liquid, and it is larger in polar water than in nonpolar dodecane. Atomically resolved friction images together with atomistic simulations reveal that the polarity of the liquid has a substantial effect on friction behavior, where liquid molecule arrangement and hydrogen-bond formation lead to a higher resistance in polar water in comparison to that in nonpolar dodecane. This work provides insights into the friction on two-dimensional layered materials in liquids and holds great promise for future low-friction technologies.

Original language	English
Journal	ACS Applied Materials & Interfaces
Volume	15
Issue	17
Pages (from-to)	21595-21601
Number of pages	7
ISSN	1944-8244
DOIs	https://doi.org/10.1021/acsami.3c00221
Publication status	Published - May 2023

Keywords

atomistic simulation
friction force microscopy
molybdenum disulfide
nanoscale friction
polar and nonpolar liquids
stick−slip motion

Access to Document

10.1021/acsami.3c00221

Cite this

@article{8e34565269934ccaa18ce116ac2688aa,

title = "Liquid-Phase Friction of Two-Dimensional Molybdenum Disulfide at the Atomic Scale",

abstract = "Tribological properties depend strongly on environmental conditions such as temperature, humidity, and operation liquid. However, the origin of the liquid effect on friction remains largely unexplored. Herein, taking molybdenum disulfide (MoS2) as a model system, we explored the nanoscale friction of MoS2 in polar (water) and nonpolar (dodecane) liquids through friction force microscopy. The friction force exhibits a similar layer-dependent behavior in liquids as in air; i.e., thinner samples have a larger friction force. Interestingly, friction is significantly influenced by the polarity of the liquid, and it is larger in polar water than in nonpolar dodecane. Atomically resolved friction images together with atomistic simulations reveal that the polarity of the liquid has a substantial effect on friction behavior, where liquid molecule arrangement and hydrogen-bond formation lead to a higher resistance in polar water in comparison to that in nonpolar dodecane. This work provides insights into the friction on two-dimensional layered materials in liquids and holds great promise for future low-friction technologies.",

keywords = "atomistic simulation, friction force microscopy, molybdenum disulfide, nanoscale friction, polar and nonpolar liquids, stick−slip motion",

author = "Deliang Zhang and Mingzheng Huang and Klausen, {Lasse Hyldgaard} and Qiang Li and Suzhi Li and Mingdong Dong",

year = "2023",

month = may,

doi = "10.1021/acsami.3c00221",

language = "English",

volume = "15",

pages = "21595--21601",

journal = "ACS Applied Materials & Interfaces",

issn = "1944-8244",

publisher = "American Chemical Society",

number = "17",

}

Liquid-Phase Friction of Two-Dimensional Molybdenum Disulfide at the Atomic Scale. / Zhang, Deliang; Huang, Mingzheng; Klausen, Lasse Hyldgaard et al.
In: ACS Applied Materials & Interfaces, Vol. 15, No. 17, 05.2023, p. 21595-21601.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

TY - JOUR

T1 - Liquid-Phase Friction of Two-Dimensional Molybdenum Disulfide at the Atomic Scale

AU - Zhang, Deliang

AU - Huang, Mingzheng

AU - Klausen, Lasse Hyldgaard

AU - Li, Qiang

AU - Li, Suzhi

AU - Dong, Mingdong

PY - 2023/5

Y1 - 2023/5

N2 - Tribological properties depend strongly on environmental conditions such as temperature, humidity, and operation liquid. However, the origin of the liquid effect on friction remains largely unexplored. Herein, taking molybdenum disulfide (MoS2) as a model system, we explored the nanoscale friction of MoS2 in polar (water) and nonpolar (dodecane) liquids through friction force microscopy. The friction force exhibits a similar layer-dependent behavior in liquids as in air; i.e., thinner samples have a larger friction force. Interestingly, friction is significantly influenced by the polarity of the liquid, and it is larger in polar water than in nonpolar dodecane. Atomically resolved friction images together with atomistic simulations reveal that the polarity of the liquid has a substantial effect on friction behavior, where liquid molecule arrangement and hydrogen-bond formation lead to a higher resistance in polar water in comparison to that in nonpolar dodecane. This work provides insights into the friction on two-dimensional layered materials in liquids and holds great promise for future low-friction technologies.

AB - Tribological properties depend strongly on environmental conditions such as temperature, humidity, and operation liquid. However, the origin of the liquid effect on friction remains largely unexplored. Herein, taking molybdenum disulfide (MoS2) as a model system, we explored the nanoscale friction of MoS2 in polar (water) and nonpolar (dodecane) liquids through friction force microscopy. The friction force exhibits a similar layer-dependent behavior in liquids as in air; i.e., thinner samples have a larger friction force. Interestingly, friction is significantly influenced by the polarity of the liquid, and it is larger in polar water than in nonpolar dodecane. Atomically resolved friction images together with atomistic simulations reveal that the polarity of the liquid has a substantial effect on friction behavior, where liquid molecule arrangement and hydrogen-bond formation lead to a higher resistance in polar water in comparison to that in nonpolar dodecane. This work provides insights into the friction on two-dimensional layered materials in liquids and holds great promise for future low-friction technologies.

KW - atomistic simulation

KW - friction force microscopy

KW - molybdenum disulfide

KW - nanoscale friction

KW - polar and nonpolar liquids

KW - stick−slip motion

UR - http://www.scopus.com/inward/record.url?scp=85154061952&partnerID=8YFLogxK

U2 - 10.1021/acsami.3c00221

DO - 10.1021/acsami.3c00221

M3 - Journal article

C2 - 37070722

AN - SCOPUS:85154061952

SN - 1944-8244

VL - 15

SP - 21595

EP - 21601

JO - ACS Applied Materials & Interfaces

JF - ACS Applied Materials & Interfaces

IS - 17

ER -

Liquid-Phase Friction of Two-Dimensional Molybdenum Disulfide at the Atomic Scale

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this