Diffusion in two-dimensional colloid-DNA systems
Journal
Physica A: Statistical Mechanics and its Applications
Journal Volume
329
Journal Issue
3-4
Pages
431-435
Date Issued
2003
Author(s)
Abstract
Diffusion in quasi-two-dimensional colloid-DNA systems are studied by enhanced video microscopy and image analysis. The colloidal particles are polystyrene spheres and DNA is linear or circular bacteriophage λ-DNA. Dyed linear DNA molecules in pure linear DNA solutions are tracked by fluorescence microscopy. The diffusivities of the colloidal particles and of the DNA molecules are found to decrease sharply at low DNA concentration; the diffusivities of the colloidal particles in both linear and circular DNA exhibit a change in slope as the DNA concentration increases. © 2003 Elsevier B.V. All rights reserved.
Type
journal article