Actively cooled vapor preconcentrator
First Claim
Patent Images
1. An analyte collection device, the device comprising:
- a microscale plate having an upper surface and an active area, the active area including a plurality of perforations extending therethrough, the plurality of perforations being arranged to permit passage of an analyte fluid flow through said microscale plate;
a heating element for heating said active area;
a thermal distribution layer disposed over at least a portion of the active area;
a thermal insulating layer disposed on the upper surface; and
an active cooler for cooling the active area at or below an ambient temperature,wherein said thermal distribution layer comprises a layer of weak thermally conductive material disposed over the thermal insulating layer for conducting thermal energy away from the microscale plate,and wherein the thermal insulating layer is positioned between the upper surface of the microscale plate and the thermal distribution layer.
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Abstract
An analyte collection system device includes an active area that includes a plurality of perforations extending therethrough. The plurality of perforations are arranged to permit passage of an analyte fluid flow through the microscale plate. A heating element is provided for heating the active area, and a thermal distribution layer is disposed over at least a portion of the active area. For cooling the active area at or below an ambient temperature, an active cooler is provided.
80 Citations
23 Claims
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1. An analyte collection device, the device comprising:
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a microscale plate having an upper surface and an active area, the active area including a plurality of perforations extending therethrough, the plurality of perforations being arranged to permit passage of an analyte fluid flow through said microscale plate; a heating element for heating said active area; a thermal distribution layer disposed over at least a portion of the active area; a thermal insulating layer disposed on the upper surface; and an active cooler for cooling the active area at or below an ambient temperature, wherein said thermal distribution layer comprises a layer of weak thermally conductive material disposed over the thermal insulating layer for conducting thermal energy away from the microscale plate, and wherein the thermal insulating layer is positioned between the upper surface of the microscale plate and the thermal distribution layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 15, 16, 17, 18)
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12. An analyte collection system, comprising:
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a plurality of preconcentrator chips, each of said preconcentrator chips comprising; a microscale plate having an active area, the active area including a plurality of perforations extending therethrough, the plurality of perforations being arranged to permit passage of an analyte fluid flow through said microscale plate; a heating element for heating said active area; a thermal distribution layer disposed over at least a portion of the active area; an active cooler for cooling each of the active areas below an ambient temperature; and a thermally conductive chip support for conducting thermal energy away from said preconcentrator chips thereby cooling said preconcentrator chips, said thermally conductive chip support being configured to mount each of said plurality of preconcentrator chips, wherein said thermal distribution layer is disposed over a thermal insulating layer, and the thermal insulating layer is positioned between the microscale plate and the thermal distribution layer. - View Dependent Claims (13, 14)
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19. A method for concentrating analyte from an analyte fluid flow and delivering the analyte, the method comprising:
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cooling an active area of a microscale plate to a temperature at or below an ambient temperature, the active area including a plurality of perforations extending therethrough to permit passage of an analyte fluid flow through said microscale plate; directing analyte fluid flow substantially perpendicular to the active area and through the plurality of perforations to concentrate analyte on a sorbent disposed on the active area; heating the active area to desorb the analyte; delivering the desorbed analyte in a flow substantially parallel to the active area, wherein said cooling the active area comprises cooling a thermal distribution layer for conducting thermal energy away from the microscale plate, the thermal distribution layer being disposed over at least a portion of the active area and over a thermal insulating layer, and the thermal insulating layer being positioned between the microscale plate and the thermal distribution layer. - View Dependent Claims (20, 21, 22, 23)
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Specification