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We proposed a temperature-controlled miniaturized cell for use in a magnetic beads handling system for bio-chemical reaction, especially for PCR usage, and created it by using conventional high-precision processing technologies. The proposed system consists of four temperature-controlled cells (designed for PCR use), a flow channel, a permanent magnet, and a compact linear actuator for driving the...
We have previously proposed a magnetic bead handling mechanism for micro-total-analysis-systems and have developed a palmtop-sized biochemical analysis system. Appropriate agitation is one of the crucial issues in micro-meter-sized fluidic systems. We investigated the agitation produced by using multilayered flat coils and magnetic beads. The beads were magnetically agitated inside the droplet by...
A contactless programmable fluidic processor utilizing Marangoni flows is presented. Two dimensional control of microdroplets suspended in oil is achieved using a 128-pixel heater array suspended 100-500 mum above the oil layer. The heaters create surface temperature perturbations (<7degC simulated), resulting in local recirculating Marangoni flows which can move droplets in either a push or pull...
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