Method of making tapered capillary tips with constant inner diameters [electronic resource].

Published:: Washington, D.C. : United States. Dept. of Energy, 2009.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Additional Creators:: Pacific Northwest National Laboratory (U.S.), United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

Methods of forming electrospray ionization emitter tips are disclosed herein. In one embodiment, an end portion of a capillary tube can be immersed into an etchant, wherein the etchant forms a concave meniscus on the outer surface of the capillary. Variable etching rates in the meniscus can cause an external taper to form. While etching the outer surface of the capillary wall, a fluid can be flowed through the interior of the capillary tube. Etching continues until the immersed portion of the capillary tube is completely etched away.

Report Numbers:

E 1.99:7,491,341
7,491,341

Subject(s):

Engineering

Note:

Published through SciTech Connect.
02/17/2009.
"7,491,341"
"US patent application 11/394,840"
Kelly, Ryan T. (West Richland, WA); Page, Jason S. (Kennewick, WA); Tang, Keqi (Richland, WA); Smith, Richard D. (Richland, WA).

Funding Information:

AC05-76RL01830

View MARC record | catkey: 23768735