Impact of humidity on adhesion between rough surfaces

R. A. Quon, Abraham Ulman, T. K. Vanderlick

Research output: Contribution to journalArticle

Abstract

The surface forces apparatus was used to study the variation with relative humidity of adhesion between mica and rough gold films coated with either a hydrophobic or hydrophilic self-assembled monolayer (SAM). Pull-off forces, as a function of relative humidity, were measured between mica and gold coated with either n-octadecanethiol or 1-hydroxylunicosanethiol. For the alcohol-terminated SAM, pull-off forces increase from 370 mN/m (dry conditions) to 845 mN/m (saturated conditions). For the methyl-terminated SAM, pull-off forces increase from 160 mN/m (dry conditions) to 643 mN/m (saturated conditions). A quartz crystal microbalance was used to obtain adsorption isotherms on the two different SAMs. Angstrom-level changes in adsorbed layer thickness are associated with marked changes in measured adhesion forces.

Original languageEnglish (US)
Pages (from-to)8912-8916
Number of pages5
JournalLangmuir
Volume16
Issue number23
DOIs
StatePublished - Nov 2000

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Self assembled monolayers
humidity
Atmospheric humidity
adhesion
Adhesion
Mica
Gold
mica
Quartz crystal microbalances
Adsorption isotherms
gold
Alcohols
quartz crystals
microbalances
isotherms
alcohols
adsorption

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

Impact of humidity on adhesion between rough surfaces. / Quon, R. A.; Ulman, Abraham; Vanderlick, T. K.

In: Langmuir, Vol. 16, No. 23, 11.2000, p. 8912-8916.

Research output: Contribution to journalArticle

Quon, RA, Ulman, A & Vanderlick, TK 2000, 'Impact of humidity on adhesion between rough surfaces', Langmuir, vol. 16, no. 23, pp. 8912-8916. https://doi.org/10.1021/la000372l
Quon, R. A. ; Ulman, Abraham ; Vanderlick, T. K. / Impact of humidity on adhesion between rough surfaces. In: Langmuir. 2000 ; Vol. 16, No. 23. pp. 8912-8916.
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