Description: Rotational tracer diffusion in binary colloidal sphere mixtures

This title appears in the Scientific Report : 2001

Rotational tracer diffusion in binary colloidal sphere mixtures

We demonstrate that tracer/host size asymmetry and electrostatic interactions strongly affect rotational self-diffusion in binary mixtures of charged colloidal tracer and host spheres. Tracer diffusion coefficients, measured with time-resolved phosphorescence anisotropy, are compared with calculatio...

Personal Name(s):	Koenderink, G. H.
	Zhang, H. / Lettinga, M. P. / Nägele, G. / Philipse, R. H.
Contributing Institute:	Weiche Materie; IFF-WM
Published in:	Physical Review E Physical review / E, 64 64 (2001 2001) 2 2, S. 022401 022401
Imprint:	College Park, Md. APS 2001 2001-07-24 2001-07-01
Physical Description:	022401
DOI:	10.1103/PhysRevE.64.022401
Document Type:	Journal Article
Research Program:	Polymere, Membranen und komplexe Flüssigkeiten
Series Title:	Physical Review E 64
Subject (ZB):	J
Link:	OpenAccess
	Publikationsportal JuSER

Please use the identifier: http://hdl.handle.net/2128/1611 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevE.64.022401 in citations.

We demonstrate that tracer/host size asymmetry and electrostatic interactions strongly affect rotational self-diffusion in binary mixtures of charged colloidal tracer and host spheres. Tracer diffusion coefficients, measured with time-resolved phosphorescence anisotropy, are compared with calculations of rotational diffusion including two- and three-particle hydrodynamic interactions. We also show that the inverse dependence of the rotational diffusion coefficient on the suspension viscosity is approached only at large size ratios.