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Lubricity of gold nanocrystals on graphene measured using quartz crystal microbalance

In order to test recently predicted ballistic nanofriction (ultra-low drag and enhanced lubricity) of gold nanocrystals on graphite at high surface speeds, we use the quartz microbalance technique to measure the impact of deposition of gold nanocrystals on graphene. We analyze our measurements of ch...

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Autores principales: Lodge, M. S., Tang, C., Blue, B. T., Hubbard, W. A., Martini, A., Dawson, B. D., Ishigami, M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4995488/
https://www.ncbi.nlm.nih.gov/pubmed/27554595
http://dx.doi.org/10.1038/srep31837
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author Lodge, M. S.
Tang, C.
Blue, B. T.
Hubbard, W. A.
Martini, A.
Dawson, B. D.
Ishigami, M.
author_facet Lodge, M. S.
Tang, C.
Blue, B. T.
Hubbard, W. A.
Martini, A.
Dawson, B. D.
Ishigami, M.
author_sort Lodge, M. S.
collection PubMed
description In order to test recently predicted ballistic nanofriction (ultra-low drag and enhanced lubricity) of gold nanocrystals on graphite at high surface speeds, we use the quartz microbalance technique to measure the impact of deposition of gold nanocrystals on graphene. We analyze our measurements of changes in frequency and dissipation induced by nanocrystals using a framework developed for friction of adatoms on various surfaces. We find the lubricity of gold nanocrystals on graphene to be even higher than that predicted for the ballistic nanofriction, confirming the enhanced lubricity predicted at high surface speeds. Our complementary molecular dynamics simulations indicate that such high lubricity is due to the interaction strength between gold nanocrystals and graphene being lower than previously assumed for gold nanocrystals and graphite.
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spelling pubmed-49954882016-08-30 Lubricity of gold nanocrystals on graphene measured using quartz crystal microbalance Lodge, M. S. Tang, C. Blue, B. T. Hubbard, W. A. Martini, A. Dawson, B. D. Ishigami, M. Sci Rep Article In order to test recently predicted ballistic nanofriction (ultra-low drag and enhanced lubricity) of gold nanocrystals on graphite at high surface speeds, we use the quartz microbalance technique to measure the impact of deposition of gold nanocrystals on graphene. We analyze our measurements of changes in frequency and dissipation induced by nanocrystals using a framework developed for friction of adatoms on various surfaces. We find the lubricity of gold nanocrystals on graphene to be even higher than that predicted for the ballistic nanofriction, confirming the enhanced lubricity predicted at high surface speeds. Our complementary molecular dynamics simulations indicate that such high lubricity is due to the interaction strength between gold nanocrystals and graphene being lower than previously assumed for gold nanocrystals and graphite. Nature Publishing Group 2016-08-24 /pmc/articles/PMC4995488/ /pubmed/27554595 http://dx.doi.org/10.1038/srep31837 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Lodge, M. S.
Tang, C.
Blue, B. T.
Hubbard, W. A.
Martini, A.
Dawson, B. D.
Ishigami, M.
Lubricity of gold nanocrystals on graphene measured using quartz crystal microbalance
title Lubricity of gold nanocrystals on graphene measured using quartz crystal microbalance
title_full Lubricity of gold nanocrystals on graphene measured using quartz crystal microbalance
title_fullStr Lubricity of gold nanocrystals on graphene measured using quartz crystal microbalance
title_full_unstemmed Lubricity of gold nanocrystals on graphene measured using quartz crystal microbalance
title_short Lubricity of gold nanocrystals on graphene measured using quartz crystal microbalance
title_sort lubricity of gold nanocrystals on graphene measured using quartz crystal microbalance
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4995488/
https://www.ncbi.nlm.nih.gov/pubmed/27554595
http://dx.doi.org/10.1038/srep31837
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