Bubble colloidal AFM probes formed from ultrasonically generated bubbles

Ivan U. Vakarelski; Judy Lee; Raymond R. Dagastine; Derek Y.C. Chan; Geoffrey W. Stevens; Franz Grieser

doi:10.1021/la7032059

Bubble colloidal AFM probes formed from ultrasonically generated bubbles

Ivan U. Vakarelski, Judy Lee, Raymond R. Dagastine^*, Derek Y.C. Chan, Geoffrey W. Stevens, Franz Grieser

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

60 Scopus citations

Abstract

Here we introduce a simple and effective experimental approach to measuring the interaction forces between two small bubbles (̃80-140 μm) in aqueous solution during controlled collisions on the scale of micrometers to nanometers. The colloidal probe technique using atomic force microscopy (AFM) was extended to measure interaction forces between a cantilever-attached bubble and surface-attached bubbles of various sizes. By using an ultrasonic source, we generated numerous small bubbles on a mildly hydrophobic surface of a glass slide. A single bubble picked up with a strongly hydrophobized V-shaped cantilever was used as the colloidal probe. Sample force measurements were used to evaluate the pure water bubble cleanliness and the general consistency of the measurements.

Original language	English (US)
Pages (from-to)	603-605
Number of pages	3
Journal	LANGMUIR
Volume	24
Issue number	3
DOIs	https://doi.org/10.1021/la7032059
State	Published - Feb 5 2008
Externally published	Yes

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Surfaces and Interfaces
Spectroscopy
Electrochemistry

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10.1021/la7032059

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AU - Vakarelski, Ivan U.

AU - Lee, Judy

AU - Dagastine, Raymond R.

AU - Chan, Derek Y.C.

AU - Stevens, Geoffrey W.

AU - Grieser, Franz

PY - 2008/2/5

Y1 - 2008/2/5

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AB - Here we introduce a simple and effective experimental approach to measuring the interaction forces between two small bubbles (̃80-140 μm) in aqueous solution during controlled collisions on the scale of micrometers to nanometers. The colloidal probe technique using atomic force microscopy (AFM) was extended to measure interaction forces between a cantilever-attached bubble and surface-attached bubbles of various sizes. By using an ultrasonic source, we generated numerous small bubbles on a mildly hydrophobic surface of a glass slide. A single bubble picked up with a strongly hydrophobized V-shaped cantilever was used as the colloidal probe. Sample force measurements were used to evaluate the pure water bubble cleanliness and the general consistency of the measurements.

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Bubble colloidal AFM probes formed from ultrasonically generated bubbles

Abstract

ASJC Scopus subject areas

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