Tracking Rotational Diffusion of Colloidal Clusters
Soft Condensed Matter
2011-09-01 v1
Abstract
We describe a novel method of tracking the rotational motion of clusters of colloidal particles. Our method utilizes rigid body transfor- mations to determine the rotations of a cluster and extends conventional proven particle tracking techniques in a simple way, thus facilitating the study of rotational dynamics in systems containing or composed of colloidal clusters. We test our method by measuring dynamical properties of simulated Brownian clusters under conditions relevant to microscopy experiments. We then use the technique to track and describe the motions of a real colloidal cluster imaged with confocal microscopy.
Cite
@article{arxiv.1107.2614,
title = {Tracking Rotational Diffusion of Colloidal Clusters},
author = {Gary L. Hunter and Kazem V. Edmond and Mark T. Elsesser and Eric R. Weeks},
journal= {arXiv preprint arXiv:1107.2614},
year = {2011}
}
Comments
14 pages, 6 figures. Submitted to Optics Express