| Diffusion In Colloid-Polymer Mixtures: Crossover From One To Two Dimensions | ||
| Amir Amini, Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX 77005, Samon Tavakoli, Department of Chemical and Biomolecular Engineering, Rice University, 6100 Main Street, MS-362, Houston, TX 77005, Sibani Lisa Biswal, Chemical and Biomolecular Engineering, Rice University, MS 362, Main 6100, Houston, TX 77005 and Marc Robert, Rice Quantum Institute, and Richard E. Smally Institute for Nanoscale Science and Technology, Rice University, Houston, TX 77005 The dynamics of colloid and polymer are studied using fluorescence video microscopy. Square channels of different widths are made by soft lithography in order to investigate the nature of the crossover from one- to two-dimensional diffusion, at various concentrations. A particle tracking system records the trajectories of individual colloids and polymers and their self-diffusion coefficients are obtained from the mean-squared displacements. Extended Abstract Status: Not Uploaded | ||