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Monolithic electrospray ionization emitters and methods of making same

United States Patent Application

20070194224
A1
View the Complete Application at the US Patent & Trademark Office
Pacific Northwest National Laboratory - Visit the Technology Commercialization Program Website
Electrospray ionization (ESI) apparatuses and methods of making the same are disclosed. In one embodiment, an ESI emitter comprises a capillary tube filled with a porous monolithic material, wherein the end of the emitter is tapered and the tip of the tapered end comprises a protrusion of the porous monolithic material. One embodiment of the method for making ESI emitters comprises filling a capillary tube with a porous monolithic material and tapering the end of the capillary tube, thereby exposing a portion of the porous material. The exposed portion of the porous material at the tapered end, rather than the capillary tube itself, forms the tip of the ESI emitter.
Tang, Keqi (Richland, WA), Page, Jason S. (Kennewick, WA), Luo, Quanzhou (Richland, WA), Smith, Richard D. (Richland, WA)
Battelle Memorial Institute (Richland WA)
11/ 346,799
February 2, 2006
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0001] This invention was made with Government support under Contract DE-AC0576RLO1830 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.