Patent ID: 6563111
Filing Date: 2003-05-13
Classification: G01N,H01J,Y10T

Abstract:
A method for generating an electrospray of a fluid, comprising:providing a monolithic electrospray substrate having an injection side on an opposite planar side from an ejection surface, the monolithic substrate defining: an entrance orifice on the injection side, a nozzle on the ejection surface, a channel extending continuously through the monolithic substrate communicating with the entrance orifice and the nozzle, and a region surrounding the nozzle recessed from the ejection surface; introducing a fluid into the channel through the entrance orifice; providing a first electrode in electrical contact with the fluid; applying a first potential voltage to the fluid; positioning the nozzle adjacent to an extracting electrode; and ejecting the fluid in the form of an electrospray from the channel through the nozzle by applying or holding the extracting electrode at a second potential voltage different from the first potential voltage.