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Article: Experimental study and modeling of atomic-scale friction in zigzag and armchair lattice orientations of MoS2

TitleExperimental study and modeling of atomic-scale friction in zigzag and armchair lattice orientations of MoS2
Authors
Issue Date2016
PublisherTaylor & Francis Open. The Journal's web site is located at http://www.tandfonline.com/loi/tsta20
Citation
Science and Technology of Advanced Materials, 2016, v. 17 n. 1, p. 189-199 How to Cite?
AbstractPhysical properties of two-dimensional materials, such as graphene, black phosphorus, molybdenum disulfide (MoS2) and tungsten disulfide, exhibit significant dependence on their lattice orientations, especially for zigzag and armchair lattice orientations. Understanding of the atomic probe motion on surfaces with different orientations helps in the study of anisotropic materials. Unfortunately, there is no comprehensive model that can describe the probe motion mechanism. In this paper, we report a tribological study of MoS2 in zigzag and armchair orientations. We observed a characteristic power spectrum and friction force values. To explain our results, we developed a modified, two-dimensional, stick-slip Tomlinson model that allows simulation of the probe motion on MoS2 surfaces by combining the motion in the Mo layer and S layer. Our model fits well with the experimental data and provides a theoretical basis for tribological studies of two-dimensional materials.
Persistent Identifierhttp://hdl.handle.net/10722/234603
ISSN
2015 Impact Factor: 3.433
2015 SCImago Journal Rankings: 1.003

 

DC FieldValueLanguage
dc.contributor.authorLI, M-
dc.contributor.authorSHI, J-
dc.contributor.authorLIU, L-
dc.contributor.authorYU, P-
dc.contributor.authorXi, N-
dc.contributor.authorWANG, Y-
dc.date.accessioned2016-10-14T13:47:58Z-
dc.date.available2016-10-14T13:47:58Z-
dc.date.issued2016-
dc.identifier.citationScience and Technology of Advanced Materials, 2016, v. 17 n. 1, p. 189-199-
dc.identifier.issn1468-6996-
dc.identifier.urihttp://hdl.handle.net/10722/234603-
dc.description.abstractPhysical properties of two-dimensional materials, such as graphene, black phosphorus, molybdenum disulfide (MoS2) and tungsten disulfide, exhibit significant dependence on their lattice orientations, especially for zigzag and armchair lattice orientations. Understanding of the atomic probe motion on surfaces with different orientations helps in the study of anisotropic materials. Unfortunately, there is no comprehensive model that can describe the probe motion mechanism. In this paper, we report a tribological study of MoS2 in zigzag and armchair orientations. We observed a characteristic power spectrum and friction force values. To explain our results, we developed a modified, two-dimensional, stick-slip Tomlinson model that allows simulation of the probe motion on MoS2 surfaces by combining the motion in the Mo layer and S layer. Our model fits well with the experimental data and provides a theoretical basis for tribological studies of two-dimensional materials.-
dc.languageeng-
dc.publisherTaylor & Francis Open. The Journal's web site is located at http://www.tandfonline.com/loi/tsta20-
dc.relation.ispartofScience and Technology of Advanced Materials-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleExperimental study and modeling of atomic-scale friction in zigzag and armchair lattice orientations of MoS2-
dc.typeArticle-
dc.identifier.emailXi, N: xining@hku.hk-
dc.identifier.authorityXi, N=rp02044-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1080/14686996.2016.1165584-
dc.identifier.hkuros269233-
dc.identifier.volume17-
dc.identifier.issue1-
dc.identifier.spage189-
dc.identifier.epage199-
dc.publisher.placeUnited Kingdom-

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