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Issue 34, 2015
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Nematic ordering of polarizable colloidal rods in an external electric field: theory and experiment

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Abstract

We employ the coupled dipole method [B. W. Kwaadgras, et al., J. Chem. Phys., 2011, 135, 134105] to calculate the orientation-dependent interaction of polarizable colloidal rods with an external electric field. We project the angular distribution function of a system of such rods on a quasi-two-dimensional slab, corresponding to the focal plane of a microscope, and show that the 3D nematic order parameter and its measurable projected analogue are very similar. We compare our results to confocal microscopy measurements on the orientation distribution function of systems of polarizable colloidal silica rods in an external electric field, demonstrating reasonably good agreement between theory and experiment without any free fit parameter.

Graphical abstract: Nematic ordering of polarizable colloidal rods in an external electric field: theory and experiment

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Publication details

The article was received on 12 Mar 2015, accepted on 23 Jul 2015 and first published on 24 Jul 2015


Article type: Paper
DOI: 10.1039/C5CP01478F
Author version available: Download Author version (PDF)
Citation: Phys. Chem. Chem. Phys., 2015,17, 22423-22430
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    Nematic ordering of polarizable colloidal rods in an external electric field: theory and experiment

    T. Troppenz, A. Kuijk, A. Imhof, A. van Blaaderen, M. Dijkstra and R. van Roij, Phys. Chem. Chem. Phys., 2015, 17, 22423
    DOI: 10.1039/C5CP01478F

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