Title: Planar micromixer

Abstract

The present embodiment describes a laminar-mixing embodiment that utilizes simple, three-dimensional injection. Also described is the use of the embodiment in combination with wide and shallow sections of channel to affect rapid mixing in microanalytical systems. The shallow channel sections are constructed using all planar micromachining techniques, including those based on isotropic etching. The planar construction enables design using minimum dispersion concepts that, in turn, enable simultaneous mixing and injection into subsequent chromatography channels.

Inventors:

Fiechtner, Gregory J ^[1]; Singh, Anup K ^[2]; Wiedenman, Boyd J ^[3]

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+ Show Inventor Affiliations

1. Bethesda, MD
2. Danville, CA
3. Alpharetta, GA

Issue Date:

Tue Mar 18 00:00:00 EDT 2008

Research Org.:

Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

927907

Patent Number(s):

7344681

Application Number:

10/960,324

Assignee:

Sandia Corporation (Livermore, CA)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01L - CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE

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B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B01J19/0093 - {Microreactors, e.g. miniaturised or microfabricated reactors
B01J2219/00783 - Laminate assemblies, i.e. the reactor comprising a stack of plates
B01J2219/0086 - Dimensions of the flow channels
B01J2219/00889 - Mixing
B01J2219/00891 - Feeding or evacuation

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01L - CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE

B01L3/5027 - {by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip

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DOE Contract Number:  

AC04-94AL85000

Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

47 OTHER INSTRUMENTATION