Brownian motion and the hydrodynamic friction tensor for colloidal particles of complex shape

Daniela J. Kraft; Raphael Wittkowski; Borge Ten Hagen; Kazem V. Edmond; David J. Pine; Hartmut Löwen

doi:10.1103/PhysRevE.88.050301

Brownian motion and the hydrodynamic friction tensor for colloidal particles of complex shape

Daniela J. Kraft, Raphael Wittkowski, Borge Ten Hagen, Kazem V. Edmond, David J. Pine, Hartmut Löwen

Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

We synthesize colloidal particles with various anisotropic shapes and track their orientationally resolved Brownian trajectories using confocal microscopy. An analysis of appropriate short-time correlation functions provides direct access to the hydrodynamic friction tensor of the particles revealing nontrivial couplings between the translational and rotational degrees of freedom. The results are consistent with calculations of the hydrodynamic friction tensor in the low-Reynolds-number regime for the experimentally determined particle shapes.

Original language	English (US)
Article number	050301
Journal	Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume	88
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevE.88.050301
State	Published - Nov 22 2013

ASJC Scopus subject areas

Statistical and Nonlinear Physics
Statistics and Probability
Condensed Matter Physics

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10.1103/PhysRevE.88.050301

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abstract = "We synthesize colloidal particles with various anisotropic shapes and track their orientationally resolved Brownian trajectories using confocal microscopy. An analysis of appropriate short-time correlation functions provides direct access to the hydrodynamic friction tensor of the particles revealing nontrivial couplings between the translational and rotational degrees of freedom. The results are consistent with calculations of the hydrodynamic friction tensor in the low-Reynolds-number regime for the experimentally determined particle shapes.",

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AU - Kraft, Daniela J.

AU - Wittkowski, Raphael

AU - Ten Hagen, Borge

AU - Edmond, Kazem V.

AU - Pine, David J.

AU - Löwen, Hartmut

PY - 2013/11/22

Y1 - 2013/11/22

N2 - We synthesize colloidal particles with various anisotropic shapes and track their orientationally resolved Brownian trajectories using confocal microscopy. An analysis of appropriate short-time correlation functions provides direct access to the hydrodynamic friction tensor of the particles revealing nontrivial couplings between the translational and rotational degrees of freedom. The results are consistent with calculations of the hydrodynamic friction tensor in the low-Reynolds-number regime for the experimentally determined particle shapes.

AB - We synthesize colloidal particles with various anisotropic shapes and track their orientationally resolved Brownian trajectories using confocal microscopy. An analysis of appropriate short-time correlation functions provides direct access to the hydrodynamic friction tensor of the particles revealing nontrivial couplings between the translational and rotational degrees of freedom. The results are consistent with calculations of the hydrodynamic friction tensor in the low-Reynolds-number regime for the experimentally determined particle shapes.

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Brownian motion and the hydrodynamic friction tensor for colloidal particles of complex shape

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