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Diffusion is often the rate-limiting step in microfluidic-based biochemical analysis systems. In this paper, an alternative current electrothermal mixer for molecular diagnostic is presented. The mixer consists of a concentric electrode design integrated in a microfluidic cartridge. We investigated the electrothermal flow by visualizing the trajectories of seeded particles. The velocity shows a fourth...
A capacitance based nanoscale biosensor and its defect tolerance are explored. The sensor consists of a microchamber that can be filled with the fluid under test. In a two step procedure the capacitance is measured between the upper plate and the lower plate first for (a) benign fluid, and then for (b) the test fluid, potentially containing the antigens. In each of these tests, an on-chip oscillator...
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