Directional wetting on chemically patterned substrates

Research output: Contribution to journalArticleAcademicpeer-review

36 Citations (Scopus)

Abstract

The directional wetting behavior of chemically defined stripe-patterned anisotropic surfaces is presented. The equilibrium shapes of asymmetric droplets, arising from patterns of alternating hydrophilic and hydrophobic stripes with dimensions in the low-micrometer range, are investigated in relation to the stripe widths. Owing to the well-defined small droplet volume, the equilibrium shape as well as the observed contact angles exhibit unique scaling behavior. Additionally, we investigate the motion of liquid from surface areas with low macroscopic wettability toward areas with a higher wettability. The density of self-assembled fluoroalkylsilane monolayers in terms of the number and width of the stripes, as defined by the chemical patterning, proves to be of paramount importance. Linear and radial patterns are presented, which induce liquid movement along the chemically defined stripes giving rise to a macroscopic gradient in surface energy.
Original languageEnglish
Pages (from-to)328-333
Number of pages6
JournalColloids and surfaces A: Physicochemical and engineering aspects
Volume413
DOIs
Publication statusPublished - 2012

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wettability
wetting
Wetting
Substrates
liquids
surface energy
micrometers
Liquids
Self assembled monolayers
Interfacial energy
scaling
gradients
Contact angle

Keywords

  • METIS-288996
  • IR-84699

Cite this

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title = "Directional wetting on chemically patterned substrates",
abstract = "The directional wetting behavior of chemically defined stripe-patterned anisotropic surfaces is presented. The equilibrium shapes of asymmetric droplets, arising from patterns of alternating hydrophilic and hydrophobic stripes with dimensions in the low-micrometer range, are investigated in relation to the stripe widths. Owing to the well-defined small droplet volume, the equilibrium shape as well as the observed contact angles exhibit unique scaling behavior. Additionally, we investigate the motion of liquid from surface areas with low macroscopic wettability toward areas with a higher wettability. The density of self-assembled fluoroalkylsilane monolayers in terms of the number and width of the stripes, as defined by the chemical patterning, proves to be of paramount importance. Linear and radial patterns are presented, which induce liquid movement along the chemically defined stripes giving rise to a macroscopic gradient in surface energy.",
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author = "Kooij, {Ernst S.} and H.P. Jansen and O. Bliznyuk and Bene Poelsema and Zandvliet, {Henricus J.W.}",
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Directional wetting on chemically patterned substrates. / Kooij, Ernst S.; Jansen, H.P.; Bliznyuk, O.; Poelsema, Bene; Zandvliet, Henricus J.W.

In: Colloids and surfaces A: Physicochemical and engineering aspects, Vol. 413, 2012, p. 328-333.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Directional wetting on chemically patterned substrates

AU - Kooij, Ernst S.

AU - Jansen, H.P.

AU - Bliznyuk, O.

AU - Poelsema, Bene

AU - Zandvliet, Henricus J.W.

PY - 2012

Y1 - 2012

N2 - The directional wetting behavior of chemically defined stripe-patterned anisotropic surfaces is presented. The equilibrium shapes of asymmetric droplets, arising from patterns of alternating hydrophilic and hydrophobic stripes with dimensions in the low-micrometer range, are investigated in relation to the stripe widths. Owing to the well-defined small droplet volume, the equilibrium shape as well as the observed contact angles exhibit unique scaling behavior. Additionally, we investigate the motion of liquid from surface areas with low macroscopic wettability toward areas with a higher wettability. The density of self-assembled fluoroalkylsilane monolayers in terms of the number and width of the stripes, as defined by the chemical patterning, proves to be of paramount importance. Linear and radial patterns are presented, which induce liquid movement along the chemically defined stripes giving rise to a macroscopic gradient in surface energy.

AB - The directional wetting behavior of chemically defined stripe-patterned anisotropic surfaces is presented. The equilibrium shapes of asymmetric droplets, arising from patterns of alternating hydrophilic and hydrophobic stripes with dimensions in the low-micrometer range, are investigated in relation to the stripe widths. Owing to the well-defined small droplet volume, the equilibrium shape as well as the observed contact angles exhibit unique scaling behavior. Additionally, we investigate the motion of liquid from surface areas with low macroscopic wettability toward areas with a higher wettability. The density of self-assembled fluoroalkylsilane monolayers in terms of the number and width of the stripes, as defined by the chemical patterning, proves to be of paramount importance. Linear and radial patterns are presented, which induce liquid movement along the chemically defined stripes giving rise to a macroscopic gradient in surface energy.

KW - METIS-288996

KW - IR-84699

U2 - 10.1016/j.colsurfa.2011.12.075

DO - 10.1016/j.colsurfa.2011.12.075

M3 - Article

VL - 413

SP - 328

EP - 333

JO - Colloids and surfaces A: Physicochemical and engineering aspects

JF - Colloids and surfaces A: Physicochemical and engineering aspects

SN - 0927-7757

ER -