Method of making tapered capillary tips with constant inner diameters
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.
- Inventors:
-
- West Richland, WA
- Kennewick, WA
- Richland, WA
- Issue Date:
- Research Org.:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 960208
- Patent Number(s):
- 7491341
- Application Number:
- 11/394,840
- Assignee:
- Battelle Memorial Institute (Richland, WA)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- DOE Contract Number:
- AC05-76RL01830
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING
Citation Formats
Kelly, Ryan T, Page, Jason S, Tang, Keqi, and Smith, Richard D. Method of making tapered capillary tips with constant inner diameters. United States: N. p., 2009.
Web.
Kelly, Ryan T, Page, Jason S, Tang, Keqi, & Smith, Richard D. Method of making tapered capillary tips with constant inner diameters. United States.
Kelly, Ryan T, Page, Jason S, Tang, Keqi, and Smith, Richard D. Tue .
"Method of making tapered capillary tips with constant inner diameters". United States. https://www.osti.gov/servlets/purl/960208.
@article{osti_960208,
title = {Method of making tapered capillary tips with constant inner diameters},
author = {Kelly, Ryan T and Page, Jason S and Tang, Keqi and Smith, Richard D},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 17 00:00:00 EST 2009},
month = {Tue Feb 17 00:00:00 EST 2009}
}
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