Particle Concentration and Flowrates Using Electroactuated Nanopumps

We report on a peristaltic electroactuated nanopump device made from silica. The fabrication method uses standard micro-/nanofabrication processes. Dynamic trapping of nanoparticles is reported. Particle trapping is also used to calculate fluid flowrates using fluids with known particle concentrations. Flowrates of 39fL/s/channel were measured. This rate falls to 17fL/s/channel as channels are blocked by particles.