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Title: Particle sizer and DNA sequencer

Patent ·
OSTI ID:1175491

An electrophoretic device separates and detects particles such as DNA fragments, proteins, and the like. The device has a capillary which is coated with a coating with a low refractive index such as Teflon.RTM. AF. A sample of particles is fluorescently labeled and injected into the capillary. The capillary is filled with an electrolyte buffer solution. An electrical field is applied across the capillary causing the particles to migrate from a first end of the capillary to a second end of the capillary. A detector light beam is then scanned along the length of the capillary to detect the location of the separated particles. The device is amenable to a high throughput system by providing additional capillaries. The device can also be used to determine the actual size of the particles and for DNA sequencing.

Research Organization:
Univ. of California, Oakland, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
W-7405-ENG-36
Assignee:
The Regents of the University of California (Oakland, CA)
Patent Number(s):
6,942,773
Application Number:
09/771,277
OSTI ID:
1175491
Country of Publication:
United States
Language:
English

References (12)

Real-Time Fluorescence Imaging of Isotachophoretic Preconcentration for Capillary Electrophoresis journal January 1996
Chemiluminescence detection with a liquid core waveguide journal October 1999
Multi-capillary optical waveguides for DNA sequencing journal June 1998
Transversely illuminated liquid core waveguide based fluorescence detection Fluorometric flow injection determination of aqueous ammonium/ammonia journal October 1999
Small-Volume Raman Spectroscopy with a Liquid Core Waveguide journal July 1999
Spatial-Scanning Laser Fluorescence Detection for Capillary Electrophoresis journal September 1995
An electro-osmotic flow system with integrated planar optical waveguide sensing journal March 1997
Kinetics of the Interaction between DNA and the Type IC Restriction Enzyme Eco R124II journal January 1996
Laser-Induced Fluorescence Detection by Liquid Core Waveguiding Applied to DNA Sequencing by Capillary Electrophoresis journal August 2000
Time- and Wavelength-Resolved Fluorescence Detection for Capillary Zone Electrophoresis with Axial Excitation journal October 1997
Postelectrophoresis Capillary Scanning Method for DNA Sequencing journal January 1996
Luminescence Detection with a Liquid Core Waveguide journal April 1999

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