Measuring rotational diffusion of colloidal spheres with confocal microscopy

Bing Liu; Alexander Böker

doi:10.1039/c6sm01082b

Measuring rotational diffusion of colloidal spheres with confocal microscopy

Soft Matter. 2016 Jul 13;12(28):6033-7. doi: 10.1039/c6sm01082b.

Authors

Bing Liu¹, Alexander Böker²

Affiliations

¹ Fraunhofer Institut für angewandte Polymerforschung (IAP), Geiselbergstr. 69, 14476 Potsdam, Germany. liubing@iccas.ac.cn and DWI - Leibniz Institute for Interactive Materials e.V., Lehrstuhl für Makromolekulare Materialien und Oberflächen, RWTH Aachen University, Forckenbeckstr. 50, D-52056 Aachen, Germany and State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China.
² Fraunhofer Institut für angewandte Polymerforschung (IAP), Geiselbergstr. 69, 14476 Potsdam, Germany. liubing@iccas.ac.cn and DWI - Leibniz Institute for Interactive Materials e.V., Lehrstuhl für Makromolekulare Materialien und Oberflächen, RWTH Aachen University, Forckenbeckstr. 50, D-52056 Aachen, Germany and Lehrstuhl für Polymermaterialien und Polymertechnologien, Universität Potsdam, Geiselbergstrasse 69, 14476 Potsdam, Germany.

PMID: 27353601
DOI: 10.1039/c6sm01082b

Abstract

We report an experimental method to measure the translational and rotational dynamics of colloidal spheres in three dimensions with confocal microscopy and show that the experimental values reasonably agree with the theoretical values. This method can be extended to study rotational dynamics in concentrated colloidal systems and complex bio-systems.