skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: 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:
 [1];  [2];  [3];  [3]
  1. West Richland, WA
  2. Kennewick, WA
  3. Richland, WA
Issue Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
960208
Patent Number(s):
7,491,341
Application Number:
11/394,840
Assignee:
Battelle Memorial Institute (Richland, WA)
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 = {2009},
month = {2}
}

Patent:

Save / Share: