Asymmetric-Fluidic-Reservoirs Induced High Rectification Nanofluidic Diode.

ABSTRACT: We demonstrate a novel nanofluidic diode that produces rectification factors in excess of 1000. The nanofluidic diode consists of ion permselective nanopores that connect two reservoirs of different diameters- a micropore reservoir and a macropore reservoir. On the application of +100 V to the micropore, a low OFF state current is observed. The OFF state is caused by formation of the ion depleted zone in the micropore because the anions are prevented from entering the nanopores from the micropore and the cations are depleted in this region to maintain charge neutrality. On the application of -100 V, we observe a high ON state current. The ON state is caused by formation of the ion enriched zone in the microchannel because the anions cannot pass through the nanopores and accumulate in the m

SUBMITTER: Nandigana VVR 

PROVIDER: S-EPMC6141591 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature