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Issue 38, 2016
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Interactions of rod-like particles on responsive elastic sheets

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Abstract

What are the physical laws of the mutual interactions of objects bound to cell membranes, such as various membrane proteins or elongated virus particles? To rationalise this, we here investigate by extensive computer simulations mutual interactions of rod-like particles adsorbed on the surface of responsive elastic two-dimensional sheets. Specifically, we quantify sheet deformations as a response to adhesion of such filamentous particles. We demonstrate that tip-to-tip contacts of rods are favoured for relatively soft sheets, while side-by-side contacts are preferred for stiffer elastic substrates. These attractive orientation-dependent substrate-mediated interactions between the rod-like particles on responsive sheets can drive their aggregation and self-assembly. The optimal orientation of the membrane-bound rods is established via responding to the elastic energy profiles created around the particles. We unveil the phase diagramme of attractive–repulsive rod–rod interactions in the plane of their separation and mutual orientation. Applications of our results to other systems featuring membrane-associated particles are also discussed.

Graphical abstract: Interactions of rod-like particles on responsive elastic sheets

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Publication details

The article was received on 03 Jul 2016, accepted on 28 Jul 2016 and first published on 28 Jul 2016


Article type: Paper
DOI: 10.1039/C6SM01522K
Citation: Soft Matter, 2016,12, 7908-7919
  • Open access: Creative Commons BY license
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    Interactions of rod-like particles on responsive elastic sheets

    S. K. Ghosh, A. G. Cherstvy, E. P. Petrov and R. Metzler, Soft Matter, 2016, 12, 7908
    DOI: 10.1039/C6SM01522K

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