Electrokinetic pump

Title: Electrokinetic pump

Full Record
Other Related Research

Abstract

An electrokinetic pump in which the porous dielectric medium of conventional electrokinetic pumps is replaced by a patterned microstructure. The patterned microstructure is fabricated by lithographic patterning and etching of a substrate and is formed by features arranged so as to create an array of microchannels. The microchannels have dimensions on the order of the pore spacing in a conventional porous dielectric medium. Embedded unitary electrodes are vapor deposited on either end of the channel structure to provide the electric field necessary for electroosmotic flow.

Inventors:: Hencken, Kenneth R.; Sartor, George B.

Publication Date:: 2004-08-03

Research Org.:: Sandia National Lab. (SNL-CA), Livermore, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1174968

Patent Number(s):: 6,770,183

Application Number:: 09/916,717

Assignee:: Sandia National Laboratories (Livermore, CA)

DOE Contract Number:: AC04-94AL85000

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING

Citation Formats


                    Hencken, Kenneth R., and Sartor, George B. Electrokinetic pump.  United States: N. p., 2004. 
        Web.

Copy to clipboard


                    Hencken, Kenneth R., & Sartor, George B. Electrokinetic pump.  United States.

Copy to clipboard


                    Hencken, Kenneth R., and Sartor, George B. Tue .  
        "Electrokinetic pump".  United States.  https://www.osti.gov/servlets/purl/1174968.

Copy to clipboard


                    
@article{osti_1174968,

  title        = {Electrokinetic pump},

  author       = {Hencken, Kenneth R. and Sartor, George B.},

  abstractNote = {An electrokinetic pump in which the porous dielectric medium of conventional electrokinetic pumps is replaced by a patterned microstructure. The patterned microstructure is fabricated by lithographic patterning and etching of a substrate and is formed by features arranged so as to create an array of microchannels. The microchannels have dimensions on the order of the pore spacing in a conventional porous dielectric medium. Embedded unitary electrodes are vapor deposited on either end of the channel structure to provide the electric field necessary for electroosmotic flow.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/1174968},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2004},

  month        = {8}

}

Copy to clipboard

Patent:

View Patent

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Castable three-dimensional stationary phase for electric field-driven applications

Patent Shepodd, Timothy J. ; Whinnery, Jr., Leroy ; Even, Jr., William R.

A polymer material useful as the porous dielectric medium for microfluidic devices generally and electrokinetic pumps in particular. The polymer material is produced from an inverse (water-in-oil) emulsion that creates a 3-dimensional network characterized by small pores and high internal volume, characteristics that are particularly desirable for the dielectric medium for electrokinetic pumps. Further, the material can be cast-to-shape inside a microchannel. The use of bifunctional monomers provides for charge density within the polymer structure sufficient to support electroosmotic flow. The 3-dimensional polymeric material can also be covalently bound to the channel walls thereby making it suitable for high-pressure applications.
Full Text Available
Castable three-dimensional stationary phase for electric field-driven applications

Patent Shepodd, Timothy J ; Whinnery, Jr., Leroy ; Even, Jr., William R.

A polymer material useful as the porous dielectric medium for microfluidic devices generally and electrokinetic pumps in particular. The polymer material is produced from an inverse (water-in-oil) emulsion that creates a 3-dimensional network characterized by small pores and high internal volume, characteristics that are particularly desirable for the dielectric medium for electrokinetic pumps. Further, the material can be cast-to-shape inside a microchannel. The use of bifunctional monomers provides for charge density within the polymer structure sufficient to support electroosmotic flow. The 3-dimensional polymeric material can also be covalently bound to the channel walls thereby making it suitable for high-pressure applications.
Full Text Available
Method for eliminating gas blocking in electrokinetic pumping systems

Patent Arnold, Don W ; Paul, Phillip H ; Schoeniger, Joseph S

A method for eliminating gas bubble blockage of current flow during operation of an electrokinetic pump. By making use of the ability to modify the surface charge on the porous dielectric medium used in electrokinetic pumps, it becomes possible to place electrodes away from the pressurized region of the electrokinetic pump. While gas is still generated at the electrodes they are situated such that the generated gas can escape into a larger buffer reservoir and not into the high pressure region of the pump where the gas bubbles can interrupt current flow. Various combinations of porous dielectric materials and ionicmore »« less
Full Text Available
Soft-Lithographical Fabrication of Three-dimensional Photonic Crystals in the Optical Regime

Thesis/Dissertation Lee, Jae-Hwang

This dissertation describes several projects to realize low-cost and high-quality three-dimensional (3D) microfabrication using non-photolithographic techniques for layer-by-layer photonic crystals. Low-cost, efficient 3D microfabrication is a demanding technique not only for 3D photonic crystals but also for all other scientific areas, since it may create new functionalities beyond the limit of planar structures. However, a novel 3D microfabrication technique for photonic crystals implies the development of a complete set of sub-techniques for basic layer-by-layer stacking, inter-layer alignment, and material conversion. One of the conventional soft lithographic techniques, called microtransfer molding (μTM), was developed by the Whitesides group in 1996. Althoughmore »« less
https://doi.org/10.2172/892725

Full Text Available
Electrokinetic transport in microchannels with random roughness

Journal Article Wang, Moran ; Kang, Qinjun - Analytical Chemistry

We present a numerical framework to model the electrokinetic transport in microchannels with random roughness. The three-dimensional microstructure of the rough channel is generated by a random generation-growth method with three statistical parameters to control the number density, the total volume fraction, and the anisotropy characteristics of roughness elements. The governing equations for the electrokinetic transport are solved by a high-efficiency lattice Poisson?Boltzmann method in complex geometries. The effects from the geometric characteristics of roughness on the electrokinetic transport in microchannels are therefore modeled and analyzed. For a given total roughness volume fraction, a higher number density leads to amore »« less
Full Text Available

Similar Records