Micropillar array electrospray chip

Details Micropillar array electrospray chip Micropillar array electrospray chip

2011-04-19

2011-04-19

Vanore, David A (Department: 2881)

Radiant energy

Ionic separation or analysis

With sample supply means

C250S281000, C250S282000, C250S42300F, C315S111810

Reexamination Certificate

active

07928368

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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