Yang, HuiShen, MengSivagnanam, VenkataragavaluGijs, Martinus2011-06-012011-06-012011-06-01201110.1109/TRANSDUCERS.2011.5969416https://infoscience.epfl.ch/handle/20.500.14299/68077A 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 >1000 of fluorescently labeled bovine serum albumin (BSA) within a few minutes. Moreover, a numerical study of the preconcentration effect is presented to microscopically understand the phenomenon in our type of device.Protein preconcentratorelectrokinetic trappingNafionmicrofluidicstext::conference output::conference proceedings::conference paper