Effect of electric fields in low-dimensional materials: Nanofrictional response as a case study
Effect of electric fields in low-dimensional materials: Nanofrictional response as a case study
A proper control of nanoscale friction is mandatory for the fabrication and operation of optimal nanoengineered devices. In this respect, the use of electric fields looks to be promising, since they are able to alter the frictional response without imprinting permanent deformations into the structure. To this aim, we perform ab initio simulations to study the microscopic mechanisms governing friction in low-dimensional materials in the presence of electrostatic fields. We consider MX2 transition metal dichalcogenides as a case study. By applying an electric field along an axis orthogonal to the atom layers, we induce a transfer of charge along the same axis; this transfer modifies the interatomic forces, leading, in general, to easier relative layer motion. The reported outcomes constitute a starting point to study the effect of the field direction on the intrinsic friction in future investigations. Finally, the present results can be used to predict the preferential electronic redistribution in nanostructured devices where metal-to-insulator transitions may occur in working conditions.
Belviso, Florian
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Cammarata, Antonio
d9f02172-7364-4d80-a32b-03d2d7970257
Missaoui, Jamil
5f8f2508-5ae2-435b-b1bd-5cd2f3eccba2
Polcar, Tomas
c669b663-3ba9-4e7b-9f97-8ef5655ac6d2
29 October 2020
Belviso, Florian
78e90cb1-13e2-4539-9713-a31d91164666
Cammarata, Antonio
d9f02172-7364-4d80-a32b-03d2d7970257
Missaoui, Jamil
5f8f2508-5ae2-435b-b1bd-5cd2f3eccba2
Polcar, Tomas
c669b663-3ba9-4e7b-9f97-8ef5655ac6d2
Belviso, Florian, Cammarata, Antonio, Missaoui, Jamil and Polcar, Tomas
(2020)
Effect of electric fields in low-dimensional materials: Nanofrictional response as a case study.
Physical Review B, 102 (15), [155433].
(doi:10.1103/PhysRevB.102.155433).
Abstract
A proper control of nanoscale friction is mandatory for the fabrication and operation of optimal nanoengineered devices. In this respect, the use of electric fields looks to be promising, since they are able to alter the frictional response without imprinting permanent deformations into the structure. To this aim, we perform ab initio simulations to study the microscopic mechanisms governing friction in low-dimensional materials in the presence of electrostatic fields. We consider MX2 transition metal dichalcogenides as a case study. By applying an electric field along an axis orthogonal to the atom layers, we induce a transfer of charge along the same axis; this transfer modifies the interatomic forces, leading, in general, to easier relative layer motion. The reported outcomes constitute a starting point to study the effect of the field direction on the intrinsic friction in future investigations. Finally, the present results can be used to predict the preferential electronic redistribution in nanostructured devices where metal-to-insulator transitions may occur in working conditions.
Text
PhysRevB.102.155433
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Published date: 29 October 2020
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Funding Information:
This project has received funding from the European Union's Horizon2020 research and innovation programme under Grant agreement No. 721642: SOLUTION. This work has been done with the support of the Czech Science Foundation (Project No. 17-24164Y), and by the project “Novel nanostructures for engineering applications” No. CZ.02.1.01/0.0/0.0/16_026/0008396. This work was supported by The Ministry of Education, Youth and Sports from the Large Infrastructures for Research, Experimental Development and Innovations project “e-Infrastructure CZ—LM2018140.”
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© 2020 American Physical Society.
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Copyright 2020 Elsevier B.V., All rights reserved.
Identifiers
Local EPrints ID: 453988
URI: http://eprints.soton.ac.uk/id/eprint/453988
ISSN: 2469-9950
PURE UUID: 42d3f54c-1814-40ac-91fa-2043e6eed528
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Date deposited: 27 Jan 2022 18:09
Last modified: 18 Mar 2024 03:19
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Author:
Florian Belviso
Author:
Antonio Cammarata
Author:
Jamil Missaoui
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