Detachment force of particles with pinning of contact line from fluid bubbles/droplets

LISHCHUK, Sergey and ETTELAIE, Rammile (2016). Detachment force of particles with pinning of contact line from fluid bubbles/droplets. Langmuir, 32 (49), 13040-13045.

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Deformation of a spherical droplet or bubble, containing a pair of particles on its surface is considered when equal but opposite forces are applied to the particles. The particles are placed opposite each other thus providing a symmetrical problem which is more amenable to analytical treatment. We extend our previous calculations, concerning such arrangements with constant contact angles, to situations where now it is the contact line that is pinned on the surface of the particles. The force-displacement curves are calculated as the particles are pulled apart and was found to be linear for small displacements. However, it is also found that the "Hookean constant" for the pinned contact line problem is different to one derived for systems with a constant contact angle, being larger if the pinned line is at the equator of the particles.

Item Type: Article
Research Institute, Centre or Group: Materials and Engineering Research Institute > Polymers Nanocomposites and Modelling Research Centre > Materials and Fluid Flow Modelling Group
Departments: Faculty of Science, Technology and Arts > Engineering and Mathematics
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Depositing User: Sergey Lishchuk
Date Deposited: 17 Nov 2016 16:21
Last Modified: 27 Jan 2018 21:24

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