Spin coated stationary phase microfabricated gas chromatographic columns
AssigneeThe Government of the United States of America, as represented by the Secretary of the Navy
InventorsRobert Furstenberg, Christopher Breshike, Todd H. Stievater, Dmitry Kozak, R. Andrew McGill
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Abstract
Presented herein is a new concept of uniformly spin coating a flat surface with a stationary phase and creating a gas chromatography column by pressing a grooved lid, with micro-stamped ridges, down onto the coated substrate. The lids are molded out of commercially available rigid materials including epoxies so that when pressed onto a flat surface it will create an air tight seal. The epoxy material is rendered inert by a thin layer of gold.
Claims17
A method for making a micro stamped gas chromatography (GC) column, comprising:
- making a master mold comprising grooves;
- casting a reusable mold from the master mold;
- casting a GC lid comprising a rigid material from the reusable mold, wherein the GC lid comprises grooves to form a GC path;
- spin coating a stationary phase material on a planar substrate;
- and
- pressing the GC lid onto the stationary phase coated planar substrate to from an airtight seal, wherein a micro stamped GC column is formed without an adhesive or bonding process required.
A method for making a micro stamped gas chromatography (GC) column, comprising:
- making a mold comprising grooves, wherein the grooves are the negative image of a GC path;
- casting a GC lid comprising a rigid material from a reusable mold, wherein the GC lid comprises grooves to form the GC path;
- spin coating a stationary phase material on a planar substrate;
- pressing the GC lid on the stationary phase coated planar substrate to from an airtight seal, wherein a micro stamped GC column is formed without an adhesive or bonding process.
Dependencies are inferred from the claim text.