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Issue 31, 2015
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Formation, compression and surface melting of colloidal clusters by active particles

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Abstract

We demonstrate with experiments and numerical simulations that the structure and dynamics of a suspension of passive particles is strongly altered by adding a very small (<1%) number of active particles. With increasing passive particle density, we observe first the formation of dynamic clusters comprised of passive particles being surrounded by active particles, then the merging and compression of these clusters, and eventually the local melting of crystalline regions by enclosed active particles.

Graphical abstract: Formation, compression and surface melting of colloidal clusters by active particles

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Publication details

The article was received on 08 Apr 2015, accepted on 25 Jun 2015 and first published on 25 Jun 2015


Article type: Paper
DOI: 10.1039/C5SM00827A
Author version available: Download Author version (PDF)
Citation: Soft Matter, 2015,11, 6187-6191
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    Formation, compression and surface melting of colloidal clusters by active particles

    F. Kümmel, P. Shabestari, C. Lozano, G. Volpe and C. Bechinger, Soft Matter, 2015, 11, 6187
    DOI: 10.1039/C5SM00827A

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