Induced electrokinetic transport in micro-nanofluidic interconnect devices.

摘要: Hybrid micro-nanofluidic interconnect devices can be used to control analyte transfer from one microchannel the other through a nanochannel under rest, injection, and recovery stages of operation by varying applied potential bias. Using numerical simulations based on coupled transient Poisson-Nernst-Planck Stokes equations, we examine electrokinetic transport in gateable device consisting two 100 microm long, 1 wide negatively charged microchannels connected 10 nm positively both positive negative bias potentials. During accumulation ions is observed at micro-nano interface region with depletion junction region. Net space charge gives rise nonlinear during stage due induced pressure, electroosmotic flow second kind, complex circulations. Ionic currents are computed as function time for potentials three stages. Analytical expressions derived ion current variation agreement simulated results. In presence multiple or regions, show that hybrid designed logic gate.