Fig. 1. Bi-dfRC equipped with asymmetric flow capabilities, displaceable micropillars, and controlled solution change delivered via the multiplexed media delivery system (MMDS). (a) Schematic diagram depicting the bi-dfRC microchannel with asymmetric flow achieved using a steady flow input (asymmetric non-mixing treatments displayed as dark and light blue). The bi-dfRC pillar array design variation shown in i) and ii) depict where the pillars sit in relation to the triangular guidance array. The a–a pillar cross section shows the free-moving ability of the pillars. (b) Gradient asymmetric treatment introduction in the observation channel, following solution change under a steady flow rate. Treatment one (light blue) is replaced by treatment two (dark blue) over time with mixing in the microchannel, resulting in a gradual concentration build-up of treatment two over time.
