Etching a substrate: processes – Forming or treating an article whose final configuration has...
Reexamination Certificate
2006-03-31
2009-02-17
Alanko, Anita K (Department: 1792)
Etching a substrate: processes
Forming or treating an article whose final configuration has...
C216S083000, C216S096000, C216S097000, C216S100000, C216S108000, C216S109000
Reexamination Certificate
active
07491341
ABSTRACT:
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.
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Kelly Ryan T.
Page Jason S.
Smith Richard D.
Tang Keqi
Alanko Anita K
Battelle (Memorial Institute)
Tuan Allan C.
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