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Kevin Loutherback (graduate student)
Department of Electrical Engineering
Post arrays have shown great promise for separating micron-sized particles from fluid. This particular array, with larger posts interspersed with smaller posts was an attempt to elicit new sorting behaviors. The sorting capabilities of these arrays are typically tested with fluorescent beads. The trace going along the bottom of the panel is the trajectory of a bead as it weaves through the posts in the array.