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Title: Microfluidic device and methods for focusing fluid streams using electroosmotically induced pressures

Abstract

A microfabricated device employing a bridging membrane and methods for electrokinetic transport of a liquid phase biological or chemical material using the same are described. The bridging membrane is deployed in or adjacent to a microchannel and permits either electric current flow or the transport of gas species, while inhibiting the bulk flow of material. The use of bridging membranes in accordance with this invention is applicable to electrokinetically inducing fluid flow to confine a selected material in a region of a microchannel that is not influenced by an electric field. Other structures for inducing fluid flow in accordance with this invention include nanochannel bridging membranes and alternating current fluid pumping devices. Applications of the bridging membranes according to this invention include the separation of species from a sample material, valving of fluids in a microchannel network, mixing of different materials in a microchannel, and the pumping of fluids.

Inventors:
;
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1176319
Patent Number(s):
7,727,363
Application Number:
11/049,543
Assignee:
UT-Battelle, LLC (Oak Ridge, TN)
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; 59 BASIC BIOLOGICAL SCIENCES; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Jacobson, Stephen C., and Ramsey, J. Michael. Microfluidic device and methods for focusing fluid streams using electroosmotically induced pressures. United States: N. p., 2010. Web.
Jacobson, Stephen C., & Ramsey, J. Michael. Microfluidic device and methods for focusing fluid streams using electroosmotically induced pressures. United States.
Jacobson, Stephen C., and Ramsey, J. Michael. Tue . "Microfluidic device and methods for focusing fluid streams using electroosmotically induced pressures". United States. https://www.osti.gov/servlets/purl/1176319.
@article{osti_1176319,
title = {Microfluidic device and methods for focusing fluid streams using electroosmotically induced pressures},
author = {Jacobson, Stephen C. and Ramsey, J. Michael},
abstractNote = {A microfabricated device employing a bridging membrane and methods for electrokinetic transport of a liquid phase biological or chemical material using the same are described. The bridging membrane is deployed in or adjacent to a microchannel and permits either electric current flow or the transport of gas species, while inhibiting the bulk flow of material. The use of bridging membranes in accordance with this invention is applicable to electrokinetically inducing fluid flow to confine a selected material in a region of a microchannel that is not influenced by an electric field. Other structures for inducing fluid flow in accordance with this invention include nanochannel bridging membranes and alternating current fluid pumping devices. Applications of the bridging membranes according to this invention include the separation of species from a sample material, valving of fluids in a microchannel network, mixing of different materials in a microchannel, and the pumping of fluids.},
doi = {},
url = {https://www.osti.gov/biblio/1176319}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {6}
}

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Works referenced in this record:

Electroosmotically Induced Hydraulic Pumping on Microchips:  Differential Ion Transport
journal, May 2000