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Issue 23, 2014
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Capillary attraction induced collapse of colloidal monolayers at fluid interfaces

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Abstract

We investigate the evolution of a system of colloidal particles, trapped at a fluid interface and interacting via capillary attraction, as a function of the range of capillary interactions and temperature. We address the collapse of an initially homogeneous particle distribution and of a radially symmetric (disk-shaped) distribution of finite size, both theoretically by using a perturbative approach inspired by cosmological models and numerically by means of Brownian dynamics (BD) and dynamical density functional theory (DDFT). The results are summarized in a “dynamical phase diagram”, describing a smooth crossover from a collective (gravitational-like) collapse to local (spinodal-like) clustering. In this crossover region, the evolution exhibits a peculiar shock wave behavior at the outer rim of the contracting, disk-shaped distribution.

Graphical abstract: Capillary attraction induced collapse of colloidal monolayers at fluid interfaces

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Publication details

The article was received on 10 Dec 2013, accepted on 18 Feb 2014 and first published on 18 Feb 2014


Article type: Paper
DOI: 10.1039/C3SM53070A
Citation: Soft Matter, 2014,10, 4091-4109
  • Open access: Creative Commons BY-NC license
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    Capillary attraction induced collapse of colloidal monolayers at fluid interfaces

    J. Bleibel, A. Domínguez, M. Oettel and S. Dietrich, Soft Matter, 2014, 10, 4091
    DOI: 10.1039/C3SM53070A

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