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Title: Dielectrokinetic chromatography devices

Patent ·
OSTI ID:1165448

Disclosed herein are methods and devices for dielectrokinetic chromatography. As disclosed, the devices comprise microchannels having at least one perturber which produces a non-uniformity in a field spanning the width of the microchannel. The interaction of the field non-uniformity with a perturber produces a secondary flow which competes with a primary flow. By decreasing the size of the perturber the secondary flow becomes significant for particles/analytes in the nanometer-size range. Depending on the nature of a particle/analyte present in the fluid and its interaction with the primary flow and the secondary flow, the analyte may be retained or redirected. The composition of the primary flow can be varied to affect the magnitude of primary and/or secondary flows on the particles/analytes and thereby separate and concentrate it from other particles/analytes.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC04-94AL85000
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Number(s):
8,911,606
Application Number:
14/050,502
OSTI ID:
1165448
Resource Relation:
Patent File Date: 2013 Oct 10
Country of Publication:
United States
Language:
English

References (82)

Apparatus for continuous electrochromatographic separation patent February 1982
Polyether-polycarbonates for dialysis membranes patent January 1986
Disposable electromanipulation chamber patent July 1989
Coiled filter strip with upstream and downstream butt ends patent May 1994
Filtration using ionically and electrically conductive depth filter patent December 1994
Microlithographic array for macromolecule and cell fractionation patent June 1995
Method of continuously separating mixtures of microscopic dielectric particles and apparatus for carrying through this method patent October 1995
Chip for performing an electrophoretic separation of molecules and method using same patent July 2001
Methods of analysis/separation patent October 2001
Electrokinetic concentration of charged molecules patent August 2002
Fibrous absorbent material and methods of making the same patent August 2003
Method and apparatus for fractionation using conventional dielectrophoresis and field flow fractionation patent November 2003
Electrode-less dielectrophorises for polarizable particles patent November 2004
Piecewise uniform conduction-like flow channels and method therefor patent February 2006
Dielectrophoretic systems without embedded electrodes patent March 2006
Continuous flow dielectrophoretic particle concentrator patent April 2007
Dialysis on microchips using thin porous polymer membranes patent September 2007
Planar micromixer patent March 2008
Dielectrophoresis device and method having insulating ridges for manipulating particles patent March 2008
Dielectrophoresis device and method having non-uniform arrays for manipulating particles patent September 2008
Protein detection system patent May 2009
Method for dialysis on microchips using thin porous polymer membrane patent May 2009
Apparatus and method for concentrating and filtering particles suspended in a fluid patent May 2009
Portable modular detection system patent October 2009
Methods and devices for high-throughput dielectrophoretic concentration patent February 2010
Insulator-based DEP with impedance measurements for analyte detection patent March 2010
Dielectrophoretic columnar focusing device patent May 2010
Dialysis membrane for separation on microchips patent July 2010
Concentration and separation of biological organisms by ultrafiltration and dielectrophoresis patent October 2010
Preconcentration and separation of analytes in microchannels patent November 2010
System for concentrating and analyzing particles suspended in a fluid patent April 2011
Microfluidic devices and methods for integrated flow cytometry patent August 2011
Method for forming polymerized microfluidic devices patent November 2011
Method for voltage-gated protein fractionation patent April 2012
Method for concentration and separation of biological organisms by ultrafiltration and dielectrophoresis patent September 2012
Dielectrophoresis device and method having nonuniform arrays for manipulating particles patent September 2012
Microfluidic device having an immobilized pH gradient and PAGE gels for protein separation and analysis patent December 2012
Method for forming polymerized microfluidic devices patent March 2013
Multidimensional bioseparation with modular microfluidics patent August 2013
Microchannel gel electrophoretic separation systems and methods for preparing and using patent September 2013
Dielectrokinetic chromatography and devices thereof patent April 2014
Microfluidic devices and methods including porous polymer monoliths patent April 2014
Microfluidic device having an immobilized pH gradient and page gels for protein separation and analysis patent May 2014
Device and method for the manipulation of a fluid sample patent-application November 2002
Continuous flow dielectrophoretic particle concentrator patent-application January 2003
Acute treatment of headache with phenothiazine antipsychotics patent-application May 2004
Variable flow control apparatus patent-application June 2004
Multidimensional electrophoresis and methods of making and using thereof patent-application June 2004
Method for continuous particle separation using obstacle arrays asymmetrically aligned to fields patent-application July 2004
Frit material and bonding method for microfluidic separation devices patent-application January 2005
Microfluidic devices comprising biochannels patent-application January 2005
Microliter scale solid phase extraction devices patent-application July 2006
Cell separation method using hydrophobic solid supports patent-application October 2006
Coherent nonlinear chromatography and methods and devices thereof patent-application April 2007
Coupling for conduits sealed in a recess of a housing patent-application June 2007
Multi-Analyte Analysis of Saliva Biomarkers as Predictors of Periodontal and Pre-Implant Disease patent-application August 2010
Determination of Cell Viability in Single or Mixed Samples Using Capillary Electrophoresis Laser-Induced Fluorescence Microfluidic Systems journal October 2001
Separating Microbes in the Manner of Molecules. 1. Capillary Electrokinetic Approaches journal December 1999
Fabrication of microstructures with high aspect ratios and great structural heights by synchrotron radiation lithography, galvanoforming, and plastic moulding (LIGA process) journal May 1986
Planar quartz chips with submicron channels for two-dimensional capillary electrophoresis applications journal March 1998
Silicate entrapped columns — new columns designed for capillary electrochromatography journal January 1999
Size Exclusion Chromatography of Microliter Volumes for On-Line Use in Low-Pressure Microfluidic Systems journal August 2006
A simple procedure for the preparation of fritless columns by entrapping conventional high performance liquid chromatography sorbents journal September 2000
Fritless Capillary Columns for HPLC and CEC Prepared by Immobilizing the Stationary Phase in an Organic Polymer Matrix journal August 2000
Novel monolithic columns with templated porosity journal July 2001
Sorting by diffusion: An asymmetric obstacle course for continuous molecular separation journal November 1999
Dielectrophoresis in Microchips Containing Arrays of Insulating Posts:  Theoretical and Experimental Results journal September 2003
Streaming dielectrophoresis for continuous-flow microfluidic devices journal November 2003
Microfluidic Cell Separation by 2-dimensional Dielectrophoresis journal January 1999
Starburst dendrimers as macromolecular pore-templates for stationary phases in capillary chromatography journal November 2002
Separation of Long DNA Molecules in a Microfabricated Entropic Trap Array journal May 2000
A DNA prism for high-speed continuous fractionation of large DNA molecules journal September 2002
Planar dielectrochromatography on non-wetted thin layers journal August 2001
Dielectrophoretic Concentration and Separation of Live and Dead Bacteria in an Array of Insulators journal March 2004
Insulator-based dielectrophoresis for the selective concentration and separation of live bacteria in water journal June 2004
High-intensity, high-gradient electric separation and dielectric filtration of particulate and granular materials journal December 1982
Dielectrophoretic chromatography with cross-flow injection
  • Sano, H.; Kabata, H.; Kurosawa, O.
  • Technical Digest. MEMS 2002 IEEE International Conference. Fifteenth IEEE International Conference on Micro Electro Mechanical Systems (Cat. No.02CH37266) https://doi.org/10.1109/MEMSYS.2002.984043
conference January 2002
Dielectrophoretic filter for separation and recovery of biological cells in water journal September 2003
Electrochromatography in Microchips:  Reversed-Phase Separation of Peptides and Amino Acids Using Photopatterned Rigid Polymer Monoliths journal February 2002
Electroporation of Mammalian Cells in a Microfluidic Channel with Geometric Variation journal July 2006
A dielectrophoretic filter for separation and collection of fine particles suspended in liquid
  • Zhou, G.; Imamura, M.; Suehiro, J.
  • 2002 IEEE Industry Applications Society Annual Meeting, Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344) https://doi.org/10.1109/IAS.2002.1042740
conference January 2002
CdSe nanowires with illumination-enhanced conductivity: Induced dipoles, dielectrophoretic assembly, and field-sensitive emission journal April 2007