A colloidal route to fabricate hierarchical sticky and non-sticky substrates

Research output: Contribution to journalArticleAcademicpeer-review

23 Citations (Scopus)

Abstract

We present a facile and inexpensive bottom-up colloidal route to prepare sticky superhydrophobic surfaces and non-sticky ones. Either spin coating to assemble silica microspheres into random multilayered arrays or irreversible adsorption of gold nanoparticles is used to manufacture substrates with a single length scale roughness. Hierarchical roughness with multiple length scales is achieved by decorating the silica spheres with gold nanoparticles. The surface chemistry of the silica surfaces is modified by the adsorption of fluoroalkylsilane self-assembled monolayers, while gold nanoparticles are hydrophobized by dodecanethiol. The wetting properties, both static and dynamic, of surfaces in relation to the morphology of the substrates are addressed. We demonstrate the role of hierarchy in the roughness in converting a sticky into a non-sticky superhydrophobic surface and discuss the results in terms of existing models describing wetting characteristics. --------------------------------------------------------------------------------
Original languageEnglish
Pages (from-to)73-80
Number of pages8
JournalJournal of colloid and interface science
Volume385
Issue number1
DOIs
Publication statusPublished - 2012

Fingerprint

Silicon Dioxide
Gold
Surface roughness
Silica
Substrates
Nanoparticles
Wetting
Adsorption
Spin coating
Self assembled monolayers
Surface chemistry
Microspheres

Keywords

  • METIS-287553
  • IR-81170

Cite this

@article{8eebe909efa24ba8bea34cabd84f8824,
title = "A colloidal route to fabricate hierarchical sticky and non-sticky substrates",
abstract = "We present a facile and inexpensive bottom-up colloidal route to prepare sticky superhydrophobic surfaces and non-sticky ones. Either spin coating to assemble silica microspheres into random multilayered arrays or irreversible adsorption of gold nanoparticles is used to manufacture substrates with a single length scale roughness. Hierarchical roughness with multiple length scales is achieved by decorating the silica spheres with gold nanoparticles. The surface chemistry of the silica surfaces is modified by the adsorption of fluoroalkylsilane self-assembled monolayers, while gold nanoparticles are hydrophobized by dodecanethiol. The wetting properties, both static and dynamic, of surfaces in relation to the morphology of the substrates are addressed. We demonstrate the role of hierarchy in the roughness in converting a sticky into a non-sticky superhydrophobic surface and discuss the results in terms of existing models describing wetting characteristics. --------------------------------------------------------------------------------",
keywords = "METIS-287553, IR-81170",
author = "M.A. Raza and Kooij, {Ernst S.} and Zandvliet, {Henricus J.W.} and Bene Poelsema",
year = "2012",
doi = "10.1016/j.jcis.2012.07.021",
language = "English",
volume = "385",
pages = "73--80",
journal = "Journal of colloid and interface science",
issn = "0021-9797",
publisher = "Academic Press Inc.",
number = "1",

}

A colloidal route to fabricate hierarchical sticky and non-sticky substrates. / Raza, M.A.; Kooij, Ernst S.; Zandvliet, Henricus J.W.; Poelsema, Bene.

In: Journal of colloid and interface science, Vol. 385, No. 1, 2012, p. 73-80.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - A colloidal route to fabricate hierarchical sticky and non-sticky substrates

AU - Raza, M.A.

AU - Kooij, Ernst S.

AU - Zandvliet, Henricus J.W.

AU - Poelsema, Bene

PY - 2012

Y1 - 2012

N2 - We present a facile and inexpensive bottom-up colloidal route to prepare sticky superhydrophobic surfaces and non-sticky ones. Either spin coating to assemble silica microspheres into random multilayered arrays or irreversible adsorption of gold nanoparticles is used to manufacture substrates with a single length scale roughness. Hierarchical roughness with multiple length scales is achieved by decorating the silica spheres with gold nanoparticles. The surface chemistry of the silica surfaces is modified by the adsorption of fluoroalkylsilane self-assembled monolayers, while gold nanoparticles are hydrophobized by dodecanethiol. The wetting properties, both static and dynamic, of surfaces in relation to the morphology of the substrates are addressed. We demonstrate the role of hierarchy in the roughness in converting a sticky into a non-sticky superhydrophobic surface and discuss the results in terms of existing models describing wetting characteristics. --------------------------------------------------------------------------------

AB - We present a facile and inexpensive bottom-up colloidal route to prepare sticky superhydrophobic surfaces and non-sticky ones. Either spin coating to assemble silica microspheres into random multilayered arrays or irreversible adsorption of gold nanoparticles is used to manufacture substrates with a single length scale roughness. Hierarchical roughness with multiple length scales is achieved by decorating the silica spheres with gold nanoparticles. The surface chemistry of the silica surfaces is modified by the adsorption of fluoroalkylsilane self-assembled monolayers, while gold nanoparticles are hydrophobized by dodecanethiol. The wetting properties, both static and dynamic, of surfaces in relation to the morphology of the substrates are addressed. We demonstrate the role of hierarchy in the roughness in converting a sticky into a non-sticky superhydrophobic surface and discuss the results in terms of existing models describing wetting characteristics. --------------------------------------------------------------------------------

KW - METIS-287553

KW - IR-81170

U2 - 10.1016/j.jcis.2012.07.021

DO - 10.1016/j.jcis.2012.07.021

M3 - Article

VL - 385

SP - 73

EP - 80

JO - Journal of colloid and interface science

JF - Journal of colloid and interface science

SN - 0021-9797

IS - 1

ER -