Charge Induced Dynamics of Water in a Graphene-Mica Slit Pore

E. Dollekamp, Pantelis Bampoulis, Daniël Faasen, H.J.W. Zandvliet, E.S. Kooij

Research output: Contribution to journalArticleAcademicpeer-review

9 Citations (Scopus)
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Abstract

We use atomic force microscopy to in situ investigate the dynamic behavior of confined water at the interface between graphene and mica. The graphene is either uncharged, negatively charged, or positively charged. At high humidity, a third water layer will intercalate between graphene and mica. When graphene is negatively charged, the interface fills faster with a complete three layer water film, compared to uncharged graphene. As charged positively, the third water layer dewets the interface, either by evaporation into the ambient or by the formation of three-dimensional droplets under the graphene, on top of the bilayer. Our experimental findings reveal novel phenomena of water at the nanoscale, which are interesting from a fundamental point of view and demonstrate the direct control over the wetting properties of the graphene/water interface.

Original languageEnglish
Pages (from-to)11977-11985
Number of pages9
JournalLangmuir
Volume33
Issue number43
DOIs
Publication statusPublished - 31 Oct 2017

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Graphite
Mica
mica
Graphene
slits
graphene
porosity
Water
water
wetting
Wetting
humidity
Atomic force microscopy
Atmospheric humidity
Evaporation
evaporation
atomic force microscopy

Cite this

Dollekamp, E. ; Bampoulis, Pantelis ; Faasen, Daniël ; Zandvliet, H.J.W. ; Kooij, E.S. / Charge Induced Dynamics of Water in a Graphene-Mica Slit Pore. In: Langmuir. 2017 ; Vol. 33, No. 43. pp. 11977-11985.
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Charge Induced Dynamics of Water in a Graphene-Mica Slit Pore. / Dollekamp, E. ; Bampoulis, Pantelis ; Faasen, Daniël; Zandvliet, H.J.W.; Kooij, E.S.

In: Langmuir, Vol. 33, No. 43, 31.10.2017, p. 11977-11985.

Research output: Contribution to journalArticleAcademicpeer-review

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AB - We use atomic force microscopy to in situ investigate the dynamic behavior of confined water at the interface between graphene and mica. The graphene is either uncharged, negatively charged, or positively charged. At high humidity, a third water layer will intercalate between graphene and mica. When graphene is negatively charged, the interface fills faster with a complete three layer water film, compared to uncharged graphene. As charged positively, the third water layer dewets the interface, either by evaporation into the ambient or by the formation of three-dimensional droplets under the graphene, on top of the bilayer. Our experimental findings reveal novel phenomena of water at the nanoscale, which are interesting from a fundamental point of view and demonstrate the direct control over the wetting properties of the graphene/water interface.

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