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Issue 45, 2016
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Phase diagram of binary colloidal rod-sphere mixtures from a 3D real-space analysis of sedimentation–diffusion equilibria

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Abstract

Self-assembly of binary particle systems offers many new opportunities for materials science. Here, we studied sedimentation equilibria of silica rods and spheres, using quantitative 3D confocal microscopy. We determined not only pressure, density and order parameter profiles, but also the experimental phase diagram exhibiting a stable binary smectic liquid-crystalline phase (Sm2). Using computer simulations we confirmed that the Sm2-phase can be stabilized by entropy alone, which opens up the possibility of combining new materials properties at a wide array of length scales.

Graphical abstract: Phase diagram of binary colloidal rod-sphere mixtures from a 3D real-space analysis of sedimentation–diffusion equilibria

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Publication details

The article was received on 22 Sep 2016, accepted on 24 Oct 2016 and first published on 25 Oct 2016


Article type: Paper
DOI: 10.1039/C6SM02162J
Citation: Soft Matter, 2016,12, 9238-9245
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    Phase diagram of binary colloidal rod-sphere mixtures from a 3D real-space analysis of sedimentation–diffusion equilibria

    H. E. Bakker, S. Dussi, B. L. Droste, T. H. Besseling, C. L. Kennedy, E. I. Wiegant, B. Liu, A. Imhof, M. Dijkstra and A. van Blaaderen, Soft Matter, 2016, 12, 9238
    DOI: 10.1039/C6SM02162J

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