Holographic Measurements of Anisotropic Three-Dimensional Diffusion of Colloidal Clusters

DSpace/Manakin Repository

Holographic Measurements of Anisotropic Three-Dimensional Diffusion of Colloidal Clusters

Citable link to this page

 

 
Title: Holographic Measurements of Anisotropic Three-Dimensional Diffusion of Colloidal Clusters
Author: Fung, Jerome; Manoharan, Vinothan N.

Note: Order does not necessarily reflect citation order of authors.

Citation: Fung, Jerome, and Vinothan N. Manoharan. 2013. “Holographic Measurements of Anisotropic Three-Dimensional Diffusion of Colloidal Clusters.” Physical Review E 88 (2): 020302.
Full Text & Related Files:
Abstract: We measure all nonzero elements of the three-dimensional diffusion tensor D for clusters of colloidal spheres to a precision of 1% or better using digital holographic microscopy. We study both dimers and triangular trimers of spheres, for which no analytical calculations of the diffusion tensor exist. We observe anisotropic rotational and translational diffusion arising from the asymmetries of the clusters. In the case of the three-particle triangular cluster, we also detect a small but statistically significant difference in the rotational diffusion about the two in-plane axes. We attribute this difference to weak breaking of threefold rotational symmetry due to a small amount of particle polydispersity. Our experimental measurements agree well with numerical calculations and show how diffusion constants can be measured under conditions relevant to colloidal self-assembly, where theoretical and even numerical prediction is difficult.
Published Version: doi:10.1103/PhysRevE.88.020302
Other Sources: http://arxiv.org/abs/1305.1315
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:11722998
Downloads of this work:

Show full Dublin Core record

This item appears in the following Collection(s)

 
 

Search DASH


Advanced Search
 
 

Submitters