Thickness, stability and contact angle of liquid films on and inside nanofibres, nanotubes and nanochannels

Davide Mattia, V. Starov, S. Semenov

Research output: Contribution to journalArticle

22 Citations (Scopus)
99 Downloads (Pure)

Abstract

While the stability of liquid films on substrates is a classical topic of colloidal science, the availability of nanostructured materials, such as nanotubes, nanofibres and nanochannels, has raised the question of how the stability of liquid films and their wetting behaviour is affected by nanoscale confinement. This paper will present the conditions for the stability of liquid films on and inside cylindrical solid substrates with nanometre scale characteristic dimensions. It is shown that the stability is determined by an effective disjoining/conjoining pressure isotherm which differs from the corresponding disjoining/conjoining pressure isotherm of flat liquid films on flat solid substrates. From the former, the equilibrium contact angles of drops on an outer or inner surface of a cylindrical capillary have been calculated as a function of surface curvature, showing that the expressions for equilibrium contact angles vary for different geometries, in view of the difference in thickness of the film of uniform thickness with which the bulk liquid (drops or menisci) is at equilibrium. These calculations have been extended to the case of glass nanocapillaries and carbon nanotubes, finding good agreement with experimental results in the literature.
Original languageEnglish
Pages (from-to)149-156
Number of pages8
JournalJournal of Colloid and Interface Science
Volume384
Issue number1
Early online date27 Jun 2012
DOIs
Publication statusPublished - 15 Oct 2012

Fingerprint

Liquid films
Nanofibers
Nanotubes
Contact angle
Isotherms
Substrates
Carbon Nanotubes
Nanostructured materials
Wetting
Carbon nanotubes
Availability
Glass
Geometry
Liquids

Cite this

Thickness, stability and contact angle of liquid films on and inside nanofibres, nanotubes and nanochannels. / Mattia, Davide; Starov, V.; Semenov, S.

In: Journal of Colloid and Interface Science, Vol. 384, No. 1, 15.10.2012, p. 149-156.

Research output: Contribution to journalArticle

@article{8758ff6f004e4afba0db4365faea9352,
title = "Thickness, stability and contact angle of liquid films on and inside nanofibres, nanotubes and nanochannels",
abstract = "While the stability of liquid films on substrates is a classical topic of colloidal science, the availability of nanostructured materials, such as nanotubes, nanofibres and nanochannels, has raised the question of how the stability of liquid films and their wetting behaviour is affected by nanoscale confinement. This paper will present the conditions for the stability of liquid films on and inside cylindrical solid substrates with nanometre scale characteristic dimensions. It is shown that the stability is determined by an effective disjoining/conjoining pressure isotherm which differs from the corresponding disjoining/conjoining pressure isotherm of flat liquid films on flat solid substrates. From the former, the equilibrium contact angles of drops on an outer or inner surface of a cylindrical capillary have been calculated as a function of surface curvature, showing that the expressions for equilibrium contact angles vary for different geometries, in view of the difference in thickness of the film of uniform thickness with which the bulk liquid (drops or menisci) is at equilibrium. These calculations have been extended to the case of glass nanocapillaries and carbon nanotubes, finding good agreement with experimental results in the literature.",
author = "Davide Mattia and V. Starov and S. Semenov",
year = "2012",
month = "10",
day = "15",
doi = "10.1016/j.jcis.2012.06.051",
language = "English",
volume = "384",
pages = "149--156",
journal = "Journal of Colloid and Interface Science",
issn = "0021-9797",
publisher = "Elsevier Academic Press Inc",
number = "1",

}

TY - JOUR

T1 - Thickness, stability and contact angle of liquid films on and inside nanofibres, nanotubes and nanochannels

AU - Mattia, Davide

AU - Starov, V.

AU - Semenov, S.

PY - 2012/10/15

Y1 - 2012/10/15

N2 - While the stability of liquid films on substrates is a classical topic of colloidal science, the availability of nanostructured materials, such as nanotubes, nanofibres and nanochannels, has raised the question of how the stability of liquid films and their wetting behaviour is affected by nanoscale confinement. This paper will present the conditions for the stability of liquid films on and inside cylindrical solid substrates with nanometre scale characteristic dimensions. It is shown that the stability is determined by an effective disjoining/conjoining pressure isotherm which differs from the corresponding disjoining/conjoining pressure isotherm of flat liquid films on flat solid substrates. From the former, the equilibrium contact angles of drops on an outer or inner surface of a cylindrical capillary have been calculated as a function of surface curvature, showing that the expressions for equilibrium contact angles vary for different geometries, in view of the difference in thickness of the film of uniform thickness with which the bulk liquid (drops or menisci) is at equilibrium. These calculations have been extended to the case of glass nanocapillaries and carbon nanotubes, finding good agreement with experimental results in the literature.

AB - While the stability of liquid films on substrates is a classical topic of colloidal science, the availability of nanostructured materials, such as nanotubes, nanofibres and nanochannels, has raised the question of how the stability of liquid films and their wetting behaviour is affected by nanoscale confinement. This paper will present the conditions for the stability of liquid films on and inside cylindrical solid substrates with nanometre scale characteristic dimensions. It is shown that the stability is determined by an effective disjoining/conjoining pressure isotherm which differs from the corresponding disjoining/conjoining pressure isotherm of flat liquid films on flat solid substrates. From the former, the equilibrium contact angles of drops on an outer or inner surface of a cylindrical capillary have been calculated as a function of surface curvature, showing that the expressions for equilibrium contact angles vary for different geometries, in view of the difference in thickness of the film of uniform thickness with which the bulk liquid (drops or menisci) is at equilibrium. These calculations have been extended to the case of glass nanocapillaries and carbon nanotubes, finding good agreement with experimental results in the literature.

UR - http://www.scopus.com/inward/record.url?scp=84864825641&partnerID=8YFLogxK

UR - http://dx.doi.org/10.1016/j.jcis.2012.06.051

U2 - 10.1016/j.jcis.2012.06.051

DO - 10.1016/j.jcis.2012.06.051

M3 - Article

VL - 384

SP - 149

EP - 156

JO - Journal of Colloid and Interface Science

JF - Journal of Colloid and Interface Science

SN - 0021-9797

IS - 1

ER -