skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Compact microchannel system

Abstract

The present invention provides compact geometries for the layout of microchannel columns through the use of turns and straight channel segments. These compact geometries permit the use of long separation or reaction columns on a small microchannel substrate or, equivalently, permit columns of a fixed length to occupy a smaller substrate area. The new geometries are based in part on mathematical analyses that provide the minimum turn radius for which column performance in not degraded. In particular, we find that straight channel segments of sufficient length reduce the required minimum turn radius, enabling compact channel layout when turns and straight segments are combined. The compact geometries are obtained by using turns and straight segments in overlapped or nested arrangements to form pleated or coiled columns.

Inventors:
Issue Date:
Research Org.:
Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1174510
Patent Number(s):
6627076
Application Number:
10/039,938
Assignee:
Sandia National Laboratories (Livermore, CA)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Griffiths, Stewart. Compact microchannel system. United States: N. p., 2003. Web.
Griffiths, Stewart. Compact microchannel system. United States.
Griffiths, Stewart. Tue . "Compact microchannel system". United States. https://www.osti.gov/servlets/purl/1174510.
@article{osti_1174510,
title = {Compact microchannel system},
author = {Griffiths, Stewart},
abstractNote = {The present invention provides compact geometries for the layout of microchannel columns through the use of turns and straight channel segments. These compact geometries permit the use of long separation or reaction columns on a small microchannel substrate or, equivalently, permit columns of a fixed length to occupy a smaller substrate area. The new geometries are based in part on mathematical analyses that provide the minimum turn radius for which column performance in not degraded. In particular, we find that straight channel segments of sufficient length reduce the required minimum turn radius, enabling compact channel layout when turns and straight segments are combined. The compact geometries are obtained by using turns and straight segments in overlapped or nested arrangements to form pleated or coiled columns.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {9}
}

Patent:

Save / Share:

Works referenced in this record:

Band Spreading in Two-Dimensional Microchannel Turns for Electrokinetic Species Transport
journal, November 2000


Low-Dispersion Turns and Junctions for Microchannel Systems
journal, January 2001


Glass chips for high-speed capillary electrophoresis separations with submicrometer plate heights
journal, October 1993


Glass chips for high-speed capillary electrophoresis separations with submicrometer plate heights
journal, October 1993


Planar chips technology for miniaturization and integration of separation techniques into monitoring systems
journal, February 1992


Turn Geometry for Minimizing Band Broadening in Microfabricated Capillary Electrophoresis Channels
journal, July 2000


Taming Turns in Microchannels.
journal, November 2000


Dispersion Sources for Compact Geometries on Microchips
journal, September 1998


Viscous fingering in Hele-Shaw cells
journal, December 1986


Microchip Devices for High-Efficiency Separations
journal, December 2000


Contribution of capillary coiling to zone dispersion in capillary zone electrophoresis
journal, January 1995


High-Speed Separations on a Microchip
journal, April 1994


Capillary electrophoresis and sample injection systems integrated on a planar glass chip
journal, September 1992


Capillary electrophoresis and sample injection systems integrated on a planar glass chip
journal, September 1992