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UItra-low friction and edge-pinning effect in large-lattice-mismatch van der Waals heterostructures

UItra-low friction and edge-pinning effect in large-lattice-mismatch van der Waals heterostructures
UItra-low friction and edge-pinning effect in large-lattice-mismatch van der Waals heterostructures

Two-dimensional heterostructures are excellent platforms to realize twist-angle-independent ultra-low friction due to their weak interlayer van der Waals interactions and natural lattice mismatch. However, for finite-size interfaces, the effect of domain edges on the friction process remains unclear. Here we report the superlubricity phenomenon and the edge-pinning effect at MoS2/graphite and MoS2/hexagonal boron nitride van der Waals heterostructure interfaces. We found that the friction coefficients of these heterostructures are below 10−6. Molecular dynamics simulations corroborate the experiments, which highlights the contribution of edges and interface steps to friction forces. Our experiments and simulations provide more information on the sliding mechanism of finite low-dimensional structures, which is vital to understand the friction process of laminar solid lubricants.

1476-1122
47-53
Liao, Mengzhou
e92e71bb-ebba-46b0-bcb8-819cb4f310cb
Nicolini, Paolo
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Du, Luojun
a96bc0b0-76a4-4322-8964-f50bdad482b3
Yuan, Jiahao
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Wang, Shuopei
4138422d-0282-4703-bcbd-3549d7fa5016
Yu, Hua
39ba379e-83e9-47b7-bffa-d170cf1de9dc
Tang, Jian
f994b7e7-96fa-47cf-9314-b2bc0a286d0d
Cheng, Peng
1e49aef0-36ef-4cda-af2a-9753881419c9
Watanabe, Kenji
92ef0b5d-d7eb-4428-a726-01533381944c
Taniguchi, Takashi
275a7cfe-1394-406c-b21e-efac4e142194
Gu, Lin
02cff352-c360-4c5a-9b68-a935fae377af
Claerbout, Victor E.P.
a4f7382e-cb6f-483d-9378-073307b7fe23
Silva, Andrea
7919ec1d-34c8-4f54-bfb2-389733f5175d
Kramer, Denis
1faae37a-fab7-4edd-99ee-ae4c30d3cde4
Polcar, Tomas
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Yang, Rong
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Shi, Dongxia
b4bb42fa-c9d4-4611-adf6-6868a05ee028
Zhang, Guangyu
c3e5ae50-e0cb-4de5-b331-4d54e7f17181
Liao, Mengzhou
e92e71bb-ebba-46b0-bcb8-819cb4f310cb
Nicolini, Paolo
80726840-4adf-44ea-a1dd-a77f9cb1e72d
Du, Luojun
a96bc0b0-76a4-4322-8964-f50bdad482b3
Yuan, Jiahao
e6d7b6ae-5545-4c9b-83c9-5c4b9c21278e
Wang, Shuopei
4138422d-0282-4703-bcbd-3549d7fa5016
Yu, Hua
39ba379e-83e9-47b7-bffa-d170cf1de9dc
Tang, Jian
f994b7e7-96fa-47cf-9314-b2bc0a286d0d
Cheng, Peng
1e49aef0-36ef-4cda-af2a-9753881419c9
Watanabe, Kenji
92ef0b5d-d7eb-4428-a726-01533381944c
Taniguchi, Takashi
275a7cfe-1394-406c-b21e-efac4e142194
Gu, Lin
02cff352-c360-4c5a-9b68-a935fae377af
Claerbout, Victor E.P.
a4f7382e-cb6f-483d-9378-073307b7fe23
Silva, Andrea
7919ec1d-34c8-4f54-bfb2-389733f5175d
Kramer, Denis
1faae37a-fab7-4edd-99ee-ae4c30d3cde4
Polcar, Tomas
c669b663-3ba9-4e7b-9f97-8ef5655ac6d2
Yang, Rong
5228f305-49fd-4366-9c6b-0ed9a0b8aef7
Shi, Dongxia
b4bb42fa-c9d4-4611-adf6-6868a05ee028
Zhang, Guangyu
c3e5ae50-e0cb-4de5-b331-4d54e7f17181

Liao, Mengzhou, Nicolini, Paolo, Du, Luojun, Yuan, Jiahao, Wang, Shuopei, Yu, Hua, Tang, Jian, Cheng, Peng, Watanabe, Kenji, Taniguchi, Takashi, Gu, Lin, Claerbout, Victor E.P., Silva, Andrea, Kramer, Denis, Polcar, Tomas, Yang, Rong, Shi, Dongxia and Zhang, Guangyu (2021) UItra-low friction and edge-pinning effect in large-lattice-mismatch van der Waals heterostructures. Nature Materials, 21 (1), 47-53. (doi:10.1038/s41563-021-01058-4).

Record type: Article

Abstract

Two-dimensional heterostructures are excellent platforms to realize twist-angle-independent ultra-low friction due to their weak interlayer van der Waals interactions and natural lattice mismatch. However, for finite-size interfaces, the effect of domain edges on the friction process remains unclear. Here we report the superlubricity phenomenon and the edge-pinning effect at MoS2/graphite and MoS2/hexagonal boron nitride van der Waals heterostructure interfaces. We found that the friction coefficients of these heterostructures are below 10−6. Molecular dynamics simulations corroborate the experiments, which highlights the contribution of edges and interface steps to friction forces. Our experiments and simulations provide more information on the sliding mechanism of finite low-dimensional structures, which is vital to understand the friction process of laminar solid lubricants.

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More information

Accepted/In Press date: 21 June 2021
Published date: 5 August 2021

Identifiers

Local EPrints ID: 454133
URI: http://eprints.soton.ac.uk/id/eprint/454133
ISSN: 1476-1122
PURE UUID: b1a3aed5-5d55-4a76-b7f4-dbd0108c4ca4
ORCID for Andrea Silva: ORCID iD orcid.org/0000-0001-6699-8115
ORCID for Tomas Polcar: ORCID iD orcid.org/0000-0002-0863-6287

Catalogue record

Date deposited: 01 Feb 2022 17:38
Last modified: 06 Jun 2024 01:49

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Contributors

Author: Mengzhou Liao
Author: Paolo Nicolini
Author: Luojun Du
Author: Jiahao Yuan
Author: Shuopei Wang
Author: Hua Yu
Author: Jian Tang
Author: Peng Cheng
Author: Kenji Watanabe
Author: Takashi Taniguchi
Author: Lin Gu
Author: Victor E.P. Claerbout
Author: Andrea Silva ORCID iD
Author: Denis Kramer
Author: Tomas Polcar ORCID iD
Author: Rong Yang
Author: Dongxia Shi
Author: Guangyu Zhang

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