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(a) Schematic of the multiplexed electrokinetic accumulator, which consists of a Nafion nanojunction that spans the five inlet microchannels and two side channels. Sandwich ELISA was performed on 6-8 μm Streptavidin beads, which were then loaded sequentially into the inlet reservoirs. (b) Microscope image of the fabricated PDMS microchannels integrated with a surface patterned nanojunction.
