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Journal of Colloid and Interface Science 247, 255257 (2002) doi:10.1006/jcis.2001.8165, available online at http://www.idealibrary.com on
 

Summary: Journal of Colloid and Interface Science 247, 255257 (2002)
doi:10.1006/jcis.2001.8165, available online at http://www.idealibrary.com on
LETTER TO THE EDITOR
Effective Spring Description of a Bubble or a Droplet
Interacting with a Particle
It is shown that the interaction of a particle with a liquid drop
or a gas bubble may be quantitatively described over the whole
distance regime by treating the fluid interface as a Hookean spring.
An algorithm suitable for analyzing atomic force microscopy data
suitable for a calculator or a spread-sheet is given and applied to
data for oil drops. C 2002 Elsevier Science (USA)
Key Words: bubble; droplet; particle interaction; atomic force
microscopy.
INTRODUCTION
Colloid probe force measurements with the atomic force microscope (AFM)
have shown that air bubbles (14) and oil droplets (59) behave as simple
Hookean springs in the so-called constant compliance regime. A recent the-
oretical analysis has confirmed this experimental finding, showing that the ex-
perimentallyappliedloadsarewellwithinthelinearregime,andthattheeffective
spring constant is practically equal to the surface tension of the interface (10).

  

Source: Attard, Phil - School of Chemistry, University of Sydney

 

Collections: Chemistry