FIG. 4.

Characterization of the custom fabricated swinging bucket in the centrifugal microfluidic device. (a) Photograph of the custom fabricated swinging bucket that locks the microfluidic chip in horizontal position within the minifuge. (b) Brightfield image of MCF-7 cells dispersed within the microfluidic channel before centrifugation. (c) Brightfield image of MCF-7 shows little migration after 5 s radial centrifugation. (c) Significant proportion of MCF-7 cells has migrated distinctly to the outer channel wall after 10 s centrifugation. Scale bar represents 100 μm.