Gas-like adhesion of two-dimensional materials onto solid surfaces

Abstract The adhesion of two-dimensional (2D) materials onto other surfaces is usually considered a solid-solid mechanical contact. Here, we conduct both atomistic simulations and theoretical modeling to show that there in fact exists an energy conversion between heat and mechanical work in the atta...

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Autores principales:	Zhengrong Guo, Tienchong Chang, Xingming Guo, Huajian Gao
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f5799709869943c3a9089d95b04c5773
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spelling	oai:doaj.org-article:f5799709869943c3a9089d95b04c57732021-12-02T11:52:56ZGas-like adhesion of two-dimensional materials onto solid surfaces10.1038/s41598-017-00184-x2045-2322https://doaj.org/article/f5799709869943c3a9089d95b04c57732017-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-00184-xhttps://doaj.org/toc/2045-2322Abstract The adhesion of two-dimensional (2D) materials onto other surfaces is usually considered a solid-solid mechanical contact. Here, we conduct both atomistic simulations and theoretical modeling to show that there in fact exists an energy conversion between heat and mechanical work in the attachment/detachment of two-dimensional materials on/off solid surfaces, indicating two-dimensional materials adhesion is a gas-like adsorption rather than a pure solid-solid mechanical adhesion. We reveal that the underlying mechanism of this intriguing gas-like adhesion is the configurational entropy difference between the freestanding and adhered states of the two-dimensional materials. Both the theoretical modeling and atomistic simulations predict that the adhesion induced entropy difference increases with increasing adhesion energy and decreasing equilibrium binding distance. Our findings provide a fundamental understanding of the adhesion of two-dimensional materials, which is important for designing two-dimensional materials based devices and may have general implications for nanoscale efficient actuators.Zhengrong GuoTienchong ChangXingming GuoHuajian GaoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-6 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Zhengrong Guo Tienchong Chang Xingming Guo Huajian Gao Gas-like adhesion of two-dimensional materials onto solid surfaces
description	Abstract The adhesion of two-dimensional (2D) materials onto other surfaces is usually considered a solid-solid mechanical contact. Here, we conduct both atomistic simulations and theoretical modeling to show that there in fact exists an energy conversion between heat and mechanical work in the attachment/detachment of two-dimensional materials on/off solid surfaces, indicating two-dimensional materials adhesion is a gas-like adsorption rather than a pure solid-solid mechanical adhesion. We reveal that the underlying mechanism of this intriguing gas-like adhesion is the configurational entropy difference between the freestanding and adhered states of the two-dimensional materials. Both the theoretical modeling and atomistic simulations predict that the adhesion induced entropy difference increases with increasing adhesion energy and decreasing equilibrium binding distance. Our findings provide a fundamental understanding of the adhesion of two-dimensional materials, which is important for designing two-dimensional materials based devices and may have general implications for nanoscale efficient actuators.
format	article
author	Zhengrong Guo Tienchong Chang Xingming Guo Huajian Gao
author_facet	Zhengrong Guo Tienchong Chang Xingming Guo Huajian Gao
author_sort	Zhengrong Guo
title	Gas-like adhesion of two-dimensional materials onto solid surfaces
title_short	Gas-like adhesion of two-dimensional materials onto solid surfaces
title_full	Gas-like adhesion of two-dimensional materials onto solid surfaces
title_fullStr	Gas-like adhesion of two-dimensional materials onto solid surfaces
title_full_unstemmed	Gas-like adhesion of two-dimensional materials onto solid surfaces
title_sort	gas-like adhesion of two-dimensional materials onto solid surfaces
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/f5799709869943c3a9089d95b04c5773
work_keys_str_mv	AT zhengrongguo gaslikeadhesionoftwodimensionalmaterialsontosolidsurfaces AT tienchongchang gaslikeadhesionoftwodimensionalmaterialsontosolidsurfaces AT xingmingguo gaslikeadhesionoftwodimensionalmaterialsontosolidsurfaces AT huajiangao gaslikeadhesionoftwodimensionalmaterialsontosolidsurfaces
_version_	1718394961350623232

Gas-like adhesion of two-dimensional materials onto solid surfaces

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