Microfluidische Vorrichtung und externer piezoelektrischer Aktor

    公开(公告)号:DE102012209117A1

    公开(公告)日:2013-01-03

    申请号:DE102012209117

    申请日:2012-05-30

    Abstract: Fluidpumpende Vorrichtung enthaltend einen piezoelektrischen Aktor, welcher extern gekoppelt ist mit einer mikrofluidischen Vorrichtung. Der piezoelektrische Aktor hat eine axiale Auslenkung entlang einer längsgerichteten Achse in Reaktion auf ein Anlegen einer Biasspannung. Die axiale Auslenkung des piezoelektrischen Aktors betreibt eines von einem internen Ventil und einer internen Pumpenkammer der mikrofluidischen Vorrichtung.

    Micro-device with electro-spray emitter

    公开(公告)号:GB2370519A

    公开(公告)日:2002-07-03

    申请号:GB0126980

    申请日:2001-11-09

    Abstract: A micro-device 10 comprises a planar substrate 12 with a microchannel 18 a cover plate 30, sample inlet port 20 and a protruding electro-spray emitter 42 suitably shaped to permit the formation of a Taylor cone from a sample passing there-through, under the influence of an electric field. Fig. 1C showing the device post removal of portions of material to form the protrusion of the electro-spray emitter 42. Also disclosed is a method of manufacture of the aforementioned micro-device comprising the use of "non-mechanical" material removal means, negating the need for "photo-resist masking", such as laser ablation or photochemical etching. Further disclosed is the use of the aforementioned micro-device in electro-spray emission, involving the passing a sample through the device and forming a Taylor cone of a sample material under the influence of an electric field at the mouth 22 of the emitter 42. The micro-device 10 may be used in the preparation of samples for subsequent processing in a mass-spectrometer. The device 10 may be composed of a polymeric material, the emitter 42 may be coated in metal. A variety of emitter 42 shapes are disclosed in later figures. The microchannel may be in the order of 1žm to 200 žm in cross-section.

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