LONG-TIME TRANSLATIONAL SELF-DIFFUSION IN ISOTROPIC DISPERSIONS OF COLLOIDAL RODS

Authors
VANBRUGGEN MPB LEKKERKERKER HNW DHONT JKG
Citation
Mpb. Vanbruggen et al., LONG-TIME TRANSLATIONAL SELF-DIFFUSION IN ISOTROPIC DISPERSIONS OF COLLOIDAL RODS, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 56(4), 1997, pp. 4394-4403
Citations number
51
Categorie Soggetti
Physycs, Mathematical","Phsycs, Fluid & Plasmas
Journal title
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics → ACNP
ISSN journal
1063651X
Volume
56
Issue
4
Year of publication
1997
Pages
4394 - 4403
Database
ISI
SICI code
1063-651X(1997)56:4<4394:LTSIID>2.0.ZU;2-P
Abstract
A dispersion of fluorescent colloidal silica coated boehmite rods with length L approximate to 325 nm and diameter D approximate to 46 nm, d ispersed in dimethylformamide, is synthesized. The concentration depen dence of the long-time translational self-diffusion coefficient Df is measured with fluorescence recovery after photobleaching up to a rod v olume fraction phi = 0.22. A linear dependence of D-s(L) on concentrat ion is found up to (L/D)phi=1. At higher concentration D-s(L) levels o ff and decreases to 3% of its value at infinite dilution for (L/D)phi= 1.5.