Schematic depiction of the problem. Representative images of embolic beads in the absence (a) and in the presence (b) of red blood cells. (c) Geometric delineation of the problem.
Migration of embolic microspheres in the presence or absence of red blood cells as obtained from experiments. (a) Lateral positions (equilibrium and oscillatory) and (b) axial velocities of microspheres as the function of relative particle diameter ().
Experimental variations in dynamic behavior of migrating microspheres. (a) Representative tracks of beads with at (star); (circle); and (square). (b) Frequency spectra of averaged bead (with ) tracks at different Reynolds numbers. Y-axis range is 10−6 to 1 in log scale. %. (c) Representative image sequence showing bead oscillation (interframe time interval = 200 ms). Scale bar is 400 μm.
Number ensemble representation of bead oscillation in capillary. (a) Constancy of statistical distribution of beads () along the channel length for % and . (b) Statistical distribution of beads () for % and .
Dependence of lateral migration on flow Reynolds number: (a) for % and (b) for %. At least five independently acquired data points have been plotted for each and . For %, larger microspheres () show oscillating dynamics if .
Combined effect of flow Reynolds number and hematocrit level. (a) Dependence of lateral migration on flow Reynolds number at different levels, for . At least five independently acquired data points have been plotted for each value. (b) Variation in average oscillation amplitude (normalized by channel diameter) of microspheres with in the parametric-space of and .
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