Separation columns and methods for manufacturing the improved separation columns
AssigneePurdue Research Corporation
InventorsFred E. Regnier, Bing He
Life of this patent
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Abstract
A separation column for use in a separation process such as chromatography, electrochromatography and electrophoresis is described. The separation column includes multiple collocated monolith support structures and interconnected channels defined by the support structures. The monolith support structures and interconnected channels are created on a substrate using an isotropic etching. The separation column also includes a cover plate disposed on the etched surface of the substrate, creating an enclosed separation column.
Claims43
A chromatography device having a longitudinal axis of bulk liquid flow, the chromatography device comprising:
- a substrate;
- and
- a plurality of collocated monolith support structures, each having a first end, a second end, and a wall therebetween,
- wherein
- the first end of each collocated monolith support structure is congruent with or in contact with the substrate,
- the plurality of collocated monolith support structures are dimensioned and oriented in a uniform two-dimensional array defining a plurality of interconnected channels bound by the walls of the collocated monolith support structures,
- wherein the plurality of interconnected channels are non-contiguous across two adjacent collocated monolith support structures in a direction perpendicular to the longitudinal axis of the chromatography device, and
- the walls of the collocated monolith support structures comprise interactive surfaces for effecting chromatographic separation of an analyte.
A chromatography device having a longitudinal axis of bulk liquid flow, the chromatography device comprising:
- (a) a substrate;
- (b) a plurality of collocated monolith support structures, each having a first end, a second end, and a wall therebetween,
- wherein
- the first end of each collocated monolith support structure is congruent with or in contact with the substrate, and
- the plurality of collocated monolith support structures are dimensioned and oriented in a uniform two-dimensional array defining a plurality of interconnected channels bound by the walls of the collocated monolith support structures and a surface of the substrate,
- wherein the plurality of interconnected channels are non-contiguous across two adjacent collocated monolith support structures in a direction perpendicular to the longitudinal axis of the chromatography device;
- and
- (c) a channel network, the channel network comprising a plurality of monolith structures, each monolith structure having a first end, a second end, and a wall therebetween,
- wherein
- the first end of each monolith structure is congruent with or in contact with the substrate,
- the plurality of monolith structures are dimensioned and oriented to define a second set of interconnected channels which are in fluid communication with the uniform two-dimensional array of interconnected channels, and
- the number of interconnected channels in the second set of interconnected channels counted in a direction perpendicular to the longitudinal axis of the chromatography device comprises less than the number of interconnected channels in the uniform two-dimensional array of interconnected channels by a factor of X, where X is the number of adjacent interconnected channels of the uniform two-dimensional array of interconnected channels which combine into a single channel within the second set of interconnected channels.
A chromatography device having a longitudinal axis of bulk liquid flow, the chromatography device comprising:
- (a) a substrate;
- (b) a plurality of collocated monolith support structures, each having a first end, a second end, and a wall therebetween,
- wherein
- the first end of each collocated monolith support structure is congruent with or in contact with the substrate,
- the plurality of collocated monolith support structures are dimensioned and oriented in a uniform two-dimensional array defining a plurality of interconnected channels bound by the walls of the collocated monolith support structures and a surface of the substrate,
- wherein the plurality of interconnected channels are non-contiguous across two adjacent collocated monolith support structures in a direction perpendicular to the longitudinal axis of the chromatography device;
- and
- (c) a cover plate associated with the second ends of the collocated monolith support structures,
- wherein
- the cover plate has a surface in fluid communication with the plurality of interconnected channels, and
- at least the walls of the collocated monolith support structures, the surface of the substrate, and the surface of the cover plate comprise a coating for chromatographically interacting with an analyte.
Dependencies are inferred from the claim text.