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We present a novel approach to increase the sensitivity of microfluidic biosensor platforms using magnetic micro-bead chains. An almost 2-fold sensitivity enhancement is achieved by introducing a magnetic field gradient along a microfluidic channel by means of a soft-magnetic lattice with lattice spacings down to 100 µm. The magnetic field gradient induces self-assembly of the magnetic beads in chains...
We present an electrochemical lab-on-a-chip (LOC) platform for the simultaneous detection of up to four different analytes. The possibility to separately immobilize different assays in a channel network, without active valves, was successfully demonstrated using a model assay linked to glucose oxidase. This enables the detection of various analytes even with different assay formats. For the assay...
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