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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/190585
- Bubble colloidal AFM probes formed from ultrasonically generated bubbles
- Vakarelski, Ivan U.; Lee, Judy; Dagastine, Raymond R.; Chan, Derek Y. C.; Stevens, Geoffrey W.; Grieser, Franz
- 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.
- Publication type
- Journal article
- Langmuir, Vol. 24, no. 3 (Feb 2008), pp. 603-605
- Publication year
- FOR Code(s)
- 0306 Physical Chemistry (Incl. Structural); 0904 Chemical Engineering
- Atomic force microscopy; Bubble colloidal; Bubbles (in fluids); Colloidal probe technique; Measurement theory; Probes; Pure water; Ultrasonic sources; Water
- American Chemical Society
- Publisher URL
- Copyright © 2008 American Chemical Society.
- Peer reviewed