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A microfluidic device for protein preconcentration based on the electrokinetic trapping principle is proposed. It comprises a Nafion strip which is simply cut from a commercially available membrane and integrated into a polydimethylsiloxane (PDMS) microfluidic structure using a guiding channel. By applying low voltage (<15 V), the device exhibits a preconcentration factor of >103 of fluorescently...
We report on a high-efficiency and self-priming active-valve micropump that is magnetically actuated by arc-shaped NdFeB permanent magnets mounted on the rotation axis of a DC minimotor. For the realisation, we use affordable powder blasting microfabrication and polydimethyl-siloxane (PDMS) molding technologies. A flow rate of 1.5 mL/min and 60 mbar backpressure are obtained at the actuation resonance...
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