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Ultraviolet-Sensitive Properties of Graphene Nanofriction

The friction characteristics of two-dimensional materials in the ultraviolet (UV) radiation environment are important to the reliability of two-dimensional material nano-structures of space equipment. A novel mechanism of UV light-sensitive nano-friction on graphene was proposed by ultraviolet vacuu...

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Detalles Bibliográficos
Autores principales: Dong, Gaolong, Ding, Shuyang, Peng, Yitian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9785420/
https://www.ncbi.nlm.nih.gov/pubmed/36558317
http://dx.doi.org/10.3390/nano12244462
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author Dong, Gaolong
Ding, Shuyang
Peng, Yitian
author_facet Dong, Gaolong
Ding, Shuyang
Peng, Yitian
author_sort Dong, Gaolong
collection PubMed
description The friction characteristics of two-dimensional materials in the ultraviolet (UV) radiation environment are important to the reliability of two-dimensional material nano-structures of space equipment. A novel mechanism of UV light-sensitive nano-friction on graphene was proposed by ultraviolet vacuum irradiation modification using an atomic force microscope (AFM). The surface roughness, adhesion force, and friction of graphene were gradually reduced over a time of irradiation below 3 min. UV185 passes through graphene and causes photochemical reactions between its bottom layer and Si/SiO(2) substrate, resulting in hydroxyl, carboxyl, and silanol suspension bonds and sp3-like bonds, which enhances the binding energy of graphene on the substrate and inhibits the out-of-plane deformation resulting in roughness and friction reduction. However, as the irradiation time increased to 5 min, the friction force increased rapidly with the aging effect and the breakdown of sp3-like bonds between the graphene–substrate interface. This study presents a new method of controlling nanofriction on graphene based on UV irradiation-sensitive posterities in vacuum conditions, which is essential to the application of two-dimensional materials in aerospace equipment, to improve anti-aging properties and wear reduction.
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spelling pubmed-97854202022-12-24 Ultraviolet-Sensitive Properties of Graphene Nanofriction Dong, Gaolong Ding, Shuyang Peng, Yitian Nanomaterials (Basel) Article The friction characteristics of two-dimensional materials in the ultraviolet (UV) radiation environment are important to the reliability of two-dimensional material nano-structures of space equipment. A novel mechanism of UV light-sensitive nano-friction on graphene was proposed by ultraviolet vacuum irradiation modification using an atomic force microscope (AFM). The surface roughness, adhesion force, and friction of graphene were gradually reduced over a time of irradiation below 3 min. UV185 passes through graphene and causes photochemical reactions between its bottom layer and Si/SiO(2) substrate, resulting in hydroxyl, carboxyl, and silanol suspension bonds and sp3-like bonds, which enhances the binding energy of graphene on the substrate and inhibits the out-of-plane deformation resulting in roughness and friction reduction. However, as the irradiation time increased to 5 min, the friction force increased rapidly with the aging effect and the breakdown of sp3-like bonds between the graphene–substrate interface. This study presents a new method of controlling nanofriction on graphene based on UV irradiation-sensitive posterities in vacuum conditions, which is essential to the application of two-dimensional materials in aerospace equipment, to improve anti-aging properties and wear reduction. MDPI 2022-12-15 /pmc/articles/PMC9785420/ /pubmed/36558317 http://dx.doi.org/10.3390/nano12244462 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Dong, Gaolong
Ding, Shuyang
Peng, Yitian
Ultraviolet-Sensitive Properties of Graphene Nanofriction
title Ultraviolet-Sensitive Properties of Graphene Nanofriction
title_full Ultraviolet-Sensitive Properties of Graphene Nanofriction
title_fullStr Ultraviolet-Sensitive Properties of Graphene Nanofriction
title_full_unstemmed Ultraviolet-Sensitive Properties of Graphene Nanofriction
title_short Ultraviolet-Sensitive Properties of Graphene Nanofriction
title_sort ultraviolet-sensitive properties of graphene nanofriction
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9785420/
https://www.ncbi.nlm.nih.gov/pubmed/36558317
http://dx.doi.org/10.3390/nano12244462
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