Method of electric field flow fractionation wherein the polarity of the electric field is periodically reversed

Stevens, Fred J

Advanced Search OptionsAdvanced Search queries use a traditional Term Search. For more info, see our FAQ.

All Fields:

Patent Title:

Abstract:

Assignee:

Inventor(s):

Patent Number:

Patent Classification (CPC):

All Classifications
A - human necessities
A01 - agriculture
A21 - baking
A22 - butchering
A23 - foods or foodstuffs
A24 - tobacco
A41 - wearing apparel
A42 - headwear
A43 - footwear
A44 - haberdashery
A45 - hand or travelling articles
A46 - brushware
A47 - furniture
A61 - medical or veterinary science
A62 - life-saving
A63 - sports
A99 - subject matter not otherwise provided for in this section
B - performing operations
B01 - physical or chemical processes or apparatus in general
B02 - crushing, pulverising, or disintegrating
B03 - separation of solid materials using liquids or using pneumatic tables or jigs
B04 - centrifugal apparatus or machines for carrying-out physical or chemical processes
B05 - spraying or atomising in general
B06 - generating or transmitting mechanical vibrations in general
B07 - separating solids from solids
B08 - cleaning
B09 - disposal of solid waste
B21 - mechanical metal-working without essentially removing material
B22 - casting
B23 - machine tools
B24 - grinding
B25 - hand tools
B26 - hand cutting tools
B27 - working or preserving wood or similar material
B28 - working cement, clay, or stone
B29 - working of plastics
B30 - presses
B31 - making articles of paper, cardboard or material worked in a manner analogous to paper
B32 - layered products
B33 - additive manufacturing technology
B41 - printing
B42 - bookbinding
B43 - writing or drawing implements
B44 - decorative arts
B60 - vehicles in general
B61 - railways
B62 - land vehicles for travelling otherwise than on rails
B63 - ships or other waterborne vessels
B64 - aircraft
B65 - conveying
B66 - hoisting
B67 - opening, closing {or cleaning} bottles, jars or similar containers
B68 - saddlery
B81 - microstructural technology
B82 - nanotechnology
B99 - subject matter not otherwise provided for in this section
C - chemistry
C01 - inorganic chemistry
C02 - treatment of water, waste water, sewage, or sludge
C03 - glass
C04 - cements
C05 - fertilisers
C06 - explosives
C07 - organic chemistry
C08 - organic macromolecular compounds
C09 - dyes
C10 - petroleum, gas or coke industries
C11 - animal or vegetable oils, fats, fatty substances or waxes
C12 - biochemistry
C13 - sugar industry
C14 - skins
C21 - metallurgy of iron
C22 - metallurgy
C23 - coating metallic material
C25 - electrolytic or electrophoretic processes
C30 - crystal growth
C40 - combinatorial technology
C99 - subject matter not otherwise provided for in this section
D - textiles
D01 - natural or man-made threads or fibres
D02 - yarns
D03 - weaving
D04 - braiding
D05 - sewing
D06 - treatment of textiles or the like
D07 - ropes
D10 - indexing scheme associated with sublasses of section d, relating to textiles
D21 - paper-making
D99 - subject matter not otherwise provided for in this section
E - fixed constructions
E01 - construction of roads, railways, or bridges
E02 - hydraulic engineering
E03 - water supply
E04 - building
E05 - locks
E06 - doors, windows, shutters, or roller blinds in general
E21 - earth drilling
E99 - subject matter not otherwise provided for in this section
F - mechanical engineering
F01 - machines or engines in general
F02 - combustion engines
F03 - machines or engines for liquids
F04 - positive - displacement machines for liquids
F05 - indexing schemes relating to engines or pumps in various subclasses of classes f01-f04
F15 - fluid-pressure actuators
F16 - engineering elements and units
F17 - storing or distributing gases or liquids
F21 - lighting
F22 - steam generation
F23 - combustion apparatus
F24 - heating
F25 - refrigeration or cooling
F26 - drying
F27 - furnaces
F28 - heat exchange in general
F41 - weapons
F42 - ammunition
F99 - subject matter not otherwise provided for in this section
G - physics
G01 - measuring
G02 - optics
G03 - photography
G04 - horology
G05 - controlling
G06 - computing
G07 - checking-devices
G08 - signalling
G09 - education
G10 - musical instruments
G11 - information storage
G12 - instrument details
G16 - information and communication technology [ict] specially adapted for specific application fields
G21 - nuclear physics
G99 - subject matter not otherwise provided for in this section
H - electricity
H01 - basic electric elements
H02 - generation
H03 - basic electronic circuitry
H04 - electric communication technique
H05 - electric techniques not otherwise provided for
H99 - subject matter not otherwise provided for in this section
Y - new / cross sectional technologies
Y02 - technologies or applications for mitigation or adaptation against climate change
Y04 - information or communication technologies having an impact on other technology areas
Y10 - technical subjects covered by former uspc

More Options ...

Title: Method of electric field flow fractionation wherein the polarity of the electric field is periodically reversed

Abstract

A novel method of electric field flow fractionation for separating solute molecules from a carrier solution is disclosed. The method of the invention utilizes an electric field that is periodically reversed in polarity, in a time-dependent, wave-like manner. The parameters of the waveform, including amplitude, frequency and wave shape may be varied to optimize separation of solute species. The waveform may further include discontinuities to enhance separation.

Inventors:

Stevens, Fred J ^[1]

Naperville, IL

Issue Date:: Wed Jan 01 00:00:00 EST 1992

Research Org.:: Argonne National Laboratory (ANL), Argonne, IL (United States)

OSTI Identifier:: 868407

Patent Number(s):: 5133844

Assignee:: United States Department of Energy (Washington, DC)

Patent Classifications (CPCs):: B - PERFORMING OPERATIONS B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS B03B - SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

Show more

B - PERFORMING OPERATIONS B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS B03B - SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
B03B5/00 - Washing granular, powdered or lumpy materials

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N2030/0035 - {electrical field}
G01N2030/007 - {programming of driving force
G01N27/44773 - {Multi-stage electrophoresis, e.g. two-dimensional electrophoresis}
G01N30/0005 - {Field flow fractionation}
G01N30/8658 - {Optimising operation parameters}

Show less

DOE Contract Number:: W-31109-ENG-38

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: method; electric; field; flow; fractionation; polarity; periodically; reversed; novel; separating; solute; molecules; carrier; solution; disclosed; utilizes; time-dependent; wave-like; manner; parameters; waveform; including; amplitude; frequency; wave; shape; varied; optimize; separation; species; discontinuities; enhance; carrier solution; electric field; novel method; enhance separation; periodically reversed; separating solute; field flow; flow fractionation; /204/

Citation Formats


                    Stevens, Fred J. Method of electric field flow fractionation wherein the polarity of the electric field is periodically reversed.  United States: N. p., 1992. 
        Web.

Copy to clipboard


                    Stevens, Fred J. Method of electric field flow fractionation wherein the polarity of the electric field is periodically reversed.  United States.

Copy to clipboard


                    Stevens, Fred J. Wed .  
        "Method of electric field flow fractionation wherein the polarity of the electric field is periodically reversed".  United States.  https://www.osti.gov/servlets/purl/868407.

Copy to clipboard


                    
@article{osti_868407,

  title        = {Method of electric field flow fractionation wherein the polarity of the electric field is periodically reversed},

  author       = {Stevens, Fred J},

  abstractNote = {A novel method of electric field flow fractionation for separating solute molecules from a carrier solution is disclosed. The method of the invention utilizes an electric field that is periodically reversed in polarity, in a time-dependent, wave-like manner. The parameters of the waveform, including amplitude, frequency and wave shape may be varied to optimize separation of solute species. The waveform may further include discontinuities to enhance separation.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Wed Jan 01 00:00:00 EST 1992},

  month        = {Wed Jan 01 00:00:00 EST 1992}

}

Copy to clipboard

Patent:

Save / Share:

Export Metadata

Save to My Library

Works referenced in this record:

Field-Flow Fractionation
journal, October 1988

Giddings, J. Calvin
Chemical & Engineering News Archive, Vol. 66, Issue 41
https://doi.org/10.1021/cen-v066n041.p034

Transport, space, entropy, diffusion and flow
journal, June 1987

Giddings, J. Calvin
Journal of Chromatography A, Vol. 395
https://doi.org/10.1016/S0021-9673(01)94097-X

Focusing counterparts of electrical field flow fractionation and capillary zone electrophoresis
journal, January 1989

Thormann, Wolfgang; Firestone, Millicent A.; Dietz, Mark L.
Journal of Chromatography A, Vol. 461
https://doi.org/10.1016/S0021-9673(00)94278-X

Field-Flow Fractionation
journal, September 1988

Caldwell, Karin D.
Analytical Chemistry, Vol. 60, Issue 17
https://doi.org/10.1021/ac00168a717

Electrical Field-Flow Fractionation of Proteins
journal, April 1972

Caldwell, K. D.; Kesner, L. F.; Myers, M. N.
Science, Vol. 176, Issue 4032
https://doi.org/10.1126/science.176.4032.296

Retention by electrical field-flow fractionation of anions in a new apparatus with annular porous glass channels
journal, May 1987

Davis, Joe M.; Fan, F. R. F.; Bard, A. J.
Analytical Chemistry, Vol. 59, Issue 9
https://doi.org/10.1021/ac00136a017

Field-flow fractionation
journal, September 1976

Giddings, J. Calvin
Journal of Chromatography A, Vol. 125, Issue 1
https://doi.org/10.1016/S0021-9673(00)93808-1

Similar Records in DOE Patents and OSTI.GOV collections:

A method of electric field flow fractionation wherein the polarity of the electric field is periodically reversed

Patent Application Stevens, F J

Field flow fractionation, a method obtaining high resolution separations of organic and inorganic colloids and soluble molecules, has been known in the art for approximately twenty years. The term field flow fractionation uses the word field in a generic sense. The field may comprise an electric field, a temperature gradient, a pH gradient, gravitational sedimentation or sedimentation through the application of a centrifugal force. The field is made to act upon a flowing solution or colloidal suspension and causes segregation or fractionation of the solute molecules or colloid particles. A novel method of electric field flow fractionation for separating solutemore » « less
Electric field induced spin-polarized current

Patent Murakami, Shuichi; Nagaosa, Naoto; Zhang, Shoucheng

A device and a method for generating an electric-field-induced spin current are disclosed. A highly spin-polarized electric current is generated using a semiconductor structure and an applied electric field across the semiconductor structure. The semiconductor structure can be a hole-doped semiconductor having finite or zero bandgap or an undoped semiconductor of zero bandgap. In one embodiment, a device for injecting spin-polarized current into a current output terminal includes a semiconductor structure including first and second electrodes, along a first axis, receiving an applied electric field and a third electrode, along a direction perpendicular to the first axis, providing the spin-polarizedmore » « less
Full Text Available
Apparatuses and methods for generating electric fields

Patent Scott, Jill R; McJunkin, Timothy R; Tremblay, Paul L

Apparatuses and methods relating to generating an electric field are disclosed. An electric field generator may include a semiconductive material configured in a physical shape substantially different from a shape of an electric field to be generated thereby. The electric field is generated when a voltage drop exists across the semiconductive material. A method for generating an electric field may include applying a voltage to a shaped semiconductive material to generate a complex, substantially nonlinear electric field. The shape of the complex, substantially nonlinear electric field may be configured for directing charged particles to a desired location. Other apparatuses andmore » methods are disclosed. « less
Full Text Available
Heavy metal multilayers for switching of magnetic unit via electrical current without magnetic field, method and applications

Patent Ma, Qinli; Li, Yufan; Chien, Chia-ling

Provided is an electric-current-controllable magnetic unit, including: a substrate, an electric-current channel disposed on the substrate, the electric-current channel including a composite heavy-metal multilayer comprising at least one heavy-metal; a capping layer disposed over the electric-current channel; and at least one ferromagnetic layer disposed between the electric-current channel and the capping layer.
Full Text Available
Methods for controlling pore morphology in aerogels using electric fields and products thereof

Patent Worsley, Marcus A.; Baumann, Theodore F.; Satcher, Jr., Joe H.; ...

In one embodiment, an aerogel or xerogel includes column structures of a material having minor pores therein and major pores devoid of the material positioned between the column structures, where longitudinal axes of the major pores are substantially parallel to one another. In another embodiment, a method includes heating a sol including aerogel or xerogel precursor materials to cause gelation thereof to form an aerogel or xerogel and exposing the heated sol to an electric field, wherein the electric field causes orientation of a microstructure of the sol during gelation, which is retained by the aerogel or xerogel. In onemore » « less
Full Text Available

Similar Records

Title: Method of electric field flow fractionation wherein the polarity of the electric field is periodically reversed

Abstract

Citation Formats

Field-Flow Fractionation journal, October 1988

Transport, space, entropy, diffusion and flow journal, June 1987

Focusing counterparts of electrical field flow fractionation and capillary zone electrophoresis journal, January 1989

Field-Flow Fractionation journal, September 1988

Electrical Field-Flow Fractionation of Proteins journal, April 1972

Retention by electrical field-flow fractionation of anions in a new apparatus with annular porous glass channels journal, May 1987

Field-flow fractionation journal, September 1976

Field-Flow Fractionation
journal, October 1988

Transport, space, entropy, diffusion and flow
journal, June 1987

Focusing counterparts of electrical field flow fractionation and capillary zone electrophoresis
journal, January 1989

Field-Flow Fractionation
journal, September 1988

Electrical Field-Flow Fractionation of Proteins
journal, April 1972

Retention by electrical field-flow fractionation of anions in a new apparatus with annular porous glass channels
journal, May 1987

Field-flow fractionation
journal, September 1976