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Nanodroplets Impacting on Graphene

Published online by Cambridge University Press:  23 March 2016

Ygor M. Jaques ,
Gustavo Brunetto  and
Douglas S. Galvão
Ygor M. Jaques*
Affiliation:
Applied Physics Department, University of Campinas, Campinas, SP 13081-970, Brazil
Gustavo Brunetto
Affiliation:
Applied Physics Department, University of Campinas, Campinas, SP 13081-970, Brazil
Douglas S. Galvão
Affiliation:
Applied Physics Department, University of Campinas, Campinas, SP 13081-970, Brazil
*
*(Email: ymjaques@gmail.com)
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Abstract

The unique and remarkable properties of graphene can be exploited as the basis toa wide range of applications. However, in spite of years of investigations thereare some important graphene properties that are not still fully understood, asfor example, its wettability. There are controversial reported results whethergraphene is really hydrophobic or hydrophilic. In order to address this problemwe have carried out classical molecular dynamics simulations of waternanodroplets shot against graphene surface. Our results show that the contactangle values between the nanodroplets and graphene surfaces depend on theinitial droplet velocity value and these angles can change from 86°(hydrophobic) to 35° (hydrophilic). Our preliminary results indicatethat the graphene wettability can be dependent on spreading liquid dynamics andwhich can explain some of the apparent inconsistencies reported in theliterature.

Keywords

simulationnanostructurewater

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Type
Articles
Information
MRS Advances , Volume 1 , Issue 10: Biomaterials and Soft Materials , 2016 , pp. 675 - 680
Copyright
Copyright © Materials Research Society 2016 

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