A dynamic and tribological simulation of a monolayer graphene sheet for a carbon atom‐graphene contact.
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| Title: | A dynamic and tribological simulation of a monolayer graphene sheet for a carbon atom‐graphene contact. |
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| Authors: | Palaiologos, Alexandros1 (AUTHOR), Grigoriadis, Kyriakos1 (AUTHOR), Zavos, Anastasios1 (AUTHOR), Nikolakopoulos, Pantelis G.1 (AUTHOR) pnikolak@mech.upatras.gr |
| Source: | Lubrication Science. Aug2019, Vol. 31 Issue 5, p194-209. 16p. |
| Subjects: | Dynamic simulation, Atomic theory, Covalent bonds, Carbon |
| Abstract: | This study focuses on the dynamic and tribological characterisation of a single‐layer graphene sheet (SLGS). A 10 × 10 nm graphene model is developed, which is modally analysed for both zigzag and armchair lattices, thus enabling the examination of chirality effect on the SLGS' eigenfrequencies. The tribological analysis consists of the same SLGS model and a carbon atom simulating the graphene tip. The carbon atom is set to move on multiple paths to examine the importance of the path's position over the sheet. The friction forces applied on the tip during its movement can be calculated. The carbon atom tip is interlinked with the graphene atoms via the Lennard‐Jones model, characterising the real contact area. Spring elements mimic the interatomic forces, while beam and mass elements simulate the graphene's C─C covalent bonds and atoms, respectively, on a finite element simulation verified by the Prandtl‐Tomlinson model. It is perceived a strong stick‐slip effect on the friction force's areal pattern, which can be verified by the Prandtl‐Tomlinson theory of the atomic scale friction. It also became clear the effect of chirality, on graphene's tribological behaviour, after the differences in the calculated friction forces. Finally, an increase in the coefficient of friction analogous to the increase of the vertical load, due to graphene's deformation, is determined, while in the zigzag lattice, the coefficient of friction appears to be significantly lower that the armchair one. [ABSTRACT FROM AUTHOR] |
| Copyright of Lubrication Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 137286899 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: A dynamic and tribological simulation of a monolayer graphene sheet for a carbon atom‐graphene contact. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Palaiologos%2C+Alexandros%22">Palaiologos, Alexandros</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Grigoriadis%2C+Kyriakos%22">Grigoriadis, Kyriakos</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zavos%2C+Anastasios%22">Zavos, Anastasios</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nikolakopoulos%2C+Pantelis+G%2E%22">Nikolakopoulos, Pantelis G.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> pnikolak@mech.upatras.gr</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Lubrication+Science%22">Lubrication Science</searchLink>. Aug2019, Vol. 31 Issue 5, p194-209. 16p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Dynamic+simulation%22">Dynamic simulation</searchLink><br /><searchLink fieldCode="DE" term="%22Atomic+theory%22">Atomic theory</searchLink><br /><searchLink fieldCode="DE" term="%22Covalent+bonds%22">Covalent bonds</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon%22">Carbon</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This study focuses on the dynamic and tribological characterisation of a single‐layer graphene sheet (SLGS). A 10 × 10 nm graphene model is developed, which is modally analysed for both zigzag and armchair lattices, thus enabling the examination of chirality effect on the SLGS' eigenfrequencies. The tribological analysis consists of the same SLGS model and a carbon atom simulating the graphene tip. The carbon atom is set to move on multiple paths to examine the importance of the path's position over the sheet. The friction forces applied on the tip during its movement can be calculated. The carbon atom tip is interlinked with the graphene atoms via the Lennard‐Jones model, characterising the real contact area. Spring elements mimic the interatomic forces, while beam and mass elements simulate the graphene's C─C covalent bonds and atoms, respectively, on a finite element simulation verified by the Prandtl‐Tomlinson model. It is perceived a strong stick‐slip effect on the friction force's areal pattern, which can be verified by the Prandtl‐Tomlinson theory of the atomic scale friction. It also became clear the effect of chirality, on graphene's tribological behaviour, after the differences in the calculated friction forces. Finally, an increase in the coefficient of friction analogous to the increase of the vertical load, due to graphene's deformation, is determined, while in the zigzag lattice, the coefficient of friction appears to be significantly lower that the armchair one. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Lubrication Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=137286899 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1002/ls.1447 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 16 StartPage: 194 Subjects: – SubjectFull: Dynamic simulation Type: general – SubjectFull: Atomic theory Type: general – SubjectFull: Covalent bonds Type: general – SubjectFull: Carbon Type: general Titles: – TitleFull: A dynamic and tribological simulation of a monolayer graphene sheet for a carbon atom‐graphene contact. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Palaiologos, Alexandros – PersonEntity: Name: NameFull: Grigoriadis, Kyriakos – PersonEntity: Name: NameFull: Zavos, Anastasios – PersonEntity: Name: NameFull: Nikolakopoulos, Pantelis G. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 08 Text: Aug2019 Type: published Y: 2019 Identifiers: – Type: issn-print Value: 09540075 Numbering: – Type: volume Value: 31 – Type: issue Value: 5 Titles: – TitleFull: Lubrication Science Type: main |
| ResultId | 1 |
