M. P. Lettinga et al 2005 Europhys. Lett. 71 692 doi:10.1209/epl/i2005-10127-x
Self-diffusion of rod-like viruses in the nematic phase
M. P. Lettinga1, E. Barry2 and Z. Dogic2
Show affiliationsWe measure the self-diffusion of colloidal rod-like virus fd in an isotropic and nematic phase. A low-volume fraction of viruses are labelled with a fluorescent dye and dissolved in a background of unlabelled rods. The trajectories of individual rods are visualized using fluorescence microscopy from which the diffusion constant is extracted. The diffusion parallel (D
) and perpendicular (D
) to the nematic director is measured. The ratio (D/D) increases monotonically with increasing virus concentration. Crossing the isotropic-nematic phase boundary results in increase of D and decrease of D when compared to the diffusion in the isotropic phase (Diso).
- PACS
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Issue 4 (August 2005)
Received 21 March 2005, accepted for publication 17 June 2005
Published 22 July 2005
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Self-diffusion of rod-like viruses in the nematic phase
M. P. Lettinga et al 2005 Europhys. Lett. 71 692
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