Effect of alcohol-water exchange and surface scanning on nanobubbles and the attraction between hydrophobic surfaces

Hampton, Marc A., Donose, Bogdan C. and Nguyen, Anh V. (2008) Effect of alcohol-water exchange and surface scanning on nanobubbles and the attraction between hydrophobic surfaces. Journal of Colloid and Interface Science, 325 1: 267-274. doi:10.1016/j.jcis.2008.05.044


Author Hampton, Marc A.
Donose, Bogdan C.
Nguyen, Anh V.
Title Effect of alcohol-water exchange and surface scanning on nanobubbles and the attraction between hydrophobic surfaces
Journal name Journal of Colloid and Interface Science   Check publisher's open access policy
ISSN 0021-9797
Publication date 2008-09-01
Year available 2008
Sub-type Article (original research)
DOI 10.1016/j.jcis.2008.05.044
Open Access Status Not yet assessed
Volume 325
Issue 1
Start page 267
End page 274
Total pages 8
Editor D. T. Wasan
Place of publication San Diego, CA, USA
Publisher Academic Press (Elsevier Science)
Language eng
Subject 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract Atomic force microscopy (AFM) was used to examine how different alcohols affect the hydrophobic attraction between a hydrophobic silica colloidal probe and a hydrophobic silica wafer. The experiments were performed in water and in water after rinsing alcohol (methanol, ethanol, or 1-propanol) throughout the AFM system. In all three cases the range of the attractive force increased after alcohol–water exchange, with 1-propanol showing the largest increase in range followed by ethanol and methanol. Additionally, experiments were performed before and after scanning the flat substrate with the colloidal probe. The range of the attractive force substantially increased with increasing scanning area. The attraction was explained by nanobubble bridging with a capillary force model with constant bridge volume proposed. The bridge volume (constant during each of the force curve measurements), contact angle and rupture distance were also determined for different scan sizes. The correlation between the rupture distance and bridge volume agreed with the available prediction.
Keyword hydrophobic force
alcohol
nanobubble
atomic force microscopy
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes Available online 30 May 2008.

 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 44 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 49 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Tue, 04 Aug 2009, 01:52:08 EST by Dr Bogdan Donose on behalf of Aust Institute for Bioengineering & Nanotechnology