Micropillar array electrospray chip
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United States of America Patent
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Apr 19, 2011
Grant Date -
May 7, 2009
app pub date -
Nov 2, 2007
filing date -
Nov 2, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to an electrospray ionization (ESI) device for forming a stream of ionized sample molecules. The device comprises a sample introduction zone for receiving a liquid-form sample, a tip for spraying the sample into aerosol or gaseous form, and a flow channel connecting the sample introduction zone and the tip. According to the invention, the flow channel comprises an array of transversely oriented microstructures adapted to passively transport the liquid-form sample introduced to the sample introduction zone to the tip by means of capillary forces. The invention concerns also a manufacturing method and applications of the ESI device, in particular mass spectrometry. The device can be used without external pumping of sample liquid.
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