Figure 5.

Concentration of green fluorescent submicron polystyrene particles in the insulating microstructures. ae Depicts the concentration at different regions as the applied voltage increased.Dark areas are the PDMS structures, and bright (green) areas are the microchannels formed by the PDMS. The flow direction is from the left to the right

Chen et al. Nanoscale Research Letters 2009 5:55-60   doi:10.1007/s11671-009-9442-3