Title: Portable dual field gradient force multichannel flow cytometer device with a dual wavelength low noise detection scheme

Abstract

Systems and methods for combining dielectrophoresis, magnetic forces, and hydrodynamic forces to manipulate particles in channels formed on top of an electrode substrate are discussed. A magnet placed in contact under the electrode substrate while particles are flowing within the channel above the electrode substrate allows these three forces to be balanced when the system is in operation. An optical detection scheme using near-confocal microscopy for simultaneously detecting two wavelengths of light emitted from the flowing particles is also discussed.

Inventors:

James, Conrad D; Galambos, Paul C; Derzon, Mark S; Graf, Darin C; Pohl, Kenneth R; Bourdon, Chris J

Issue Date:

2012-10-23

Research Org.:

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1079398

Patent Number(s):

8293089

Application Number:

12/610,409

Assignee:

Sandia Corporation (Albuquerque, NM)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS B03C - MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS

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B - PERFORMING OPERATIONS B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS B03C - MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS

B03C1/288 - {disposed at the outer circumference of a recipient}
B03C1/30 - Combinations with other devices, not otherwise provided for
B03C2201/18 - Magnetic separation whereby the particles are suspended in a liquid
B03C5/005 - {Dielectrophoresis, i.e. dielectric particles migrating towards the region of highest field strength
B03C5/026 - {using open-gradient differential dielectric separation, i.e. using electrodes of special shapes for non-uniform field creation, e.g. Fluid Integrated Circuit [FIC]}

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DOE Contract Number:  

AC04-94AL85000

Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

47 OTHER INSTRUMENTATION