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  Liquid morphologies and capillary forces between three spherical beads.

Semprebon, C., Scheel, M., Herminghaus, S., Seemann, R., & Brinkmann, M. (2016). Liquid morphologies and capillary forces between three spherical beads. Physical Review E, 94(1): 012907. doi:10.1103/PhysRevE.94.012907.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-18D5-B Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-4062-B
Genre: Journal Article

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 Creators:
Semprebon, Ciro1, Author              
Scheel, Mario, Author
Herminghaus, Stephan2, Author              
Seemann, Ralf3, Author              
Brinkmann, Martin1, Author              
Affiliations:
1Group Theory of wet random assemblies, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063303              
2Group Granular matter and irreversibility, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063306              
3Group Geometry of Fluid Interfaces, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063311              

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 Abstract: Equilibrium shapes of coalesced pendular bridges in a static assembly of spherical beads are computed by numerical minimization of the interfacial energy. Our present study focuses on generic bead configurations involving three beads, one of which is in contact to the two others while there is a gap of variable size between the latter. In agreement with previous experimental studies, we find interfacial “trimer” morphologies consisting of three coalesced pendular bridges, and “dimers” of two coalesced bridges. In a certain range of the gap opening we observe a bistability between the dimer and trimer morphology during changes of the liquid volume. The magnitude of the corresponding capillary forces in presence of a trimer or dimer depends, besides the gap opening, only on the volume or Laplace pressure of the liquid. For a given Laplace pressure, and for the same gap opening, the capillary forces induced by a trimer are only slightly larger than the corresponding forces in the presence of three pendular bridges. This observation is consistent with a plateau of capillary cohesion in terms of the saturation of a wetting liquid in the funicular regime, as reported in the experimental work [Scheel et al., Nat. Mater. 7, 189 (2008)].

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Language(s): eng - English
 Dates: 2016-07-292016-07
 Publication Status: Published in print
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 Rev. Method: Peer
 Identifiers: DOI: 10.1103/PhysRevE.94.012907
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Title: Physical Review E
Source Genre: Journal
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Pages: 16 Volume / Issue: 94 (1) Sequence Number: 012907 Start / End Page: - Identifier: ISSN: 1539-3755