Article ID Journal Published Year Pages File Type
739036 Sensors and Actuators A: Physical 2007 6 Pages PDF
Abstract

This paper describes a novel gas micropump realized on a centrifugal microfluidic platform. The pump is integrated on a passive and microstructured polymer disk which is sealed by an elastomer lid featuring paramagnetic inlays. The rotational motion of this hybrid over a stationary magnet induces a designated sequence of volume displacements of the elastic lid, leading to a net transport of gas. The pumping pressure was determined as a function of the frequency of rotation, with a maximum observable pressure of 4.1 kPa without further optimization.The first application of this rotary device is the production of gas–liquid flows by pumping ambient air into a continuous centrifugal flow of liquid. The injected gas volume segments the liquid stream into a series of liquid compartments. Apart from such multi-phase flows, the new pumping technique supplements a generic air-to-liquid sampling method to centrifugal microfluidic platforms.

Related Topics
Physical Sciences and Engineering Chemistry Electrochemistry
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