Figure 3.

a Photograph of the PDMS-insulating microstructure for concentrating of particles. b Diagram showing the microfluidic chip and experimental setup composed of microfabricated insulators, inlet/outlet reservoirs, two electrodes, and a fluorescence microscope

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