Lexmark International, Inc.

Microfluidic Mems Solution, LLC

Stephen Jacob DeMoor

Yimin Guan

Steven Wayne Bergstedt

A micro-fluidic device includes a plurality of heating elements on a substrate for heating the substrate. They define a plurality of temperature regions having distinct temperatures on the substrate. A flow feature layer is formed above the substrate to define a channel extending across the substrate through each temperature region. As fluid is repeatedly pumped within the channel, it flows from one temperature region to a next temperature region to undergo thermal cycling. Fluid wells reside in the flow feature layer under a cover and connect to the channel whereby fluid can dwell for diagnostic applications.

Micro-fluidic modules on a chip for diagnostic applications

A micro-fluidic device includes a plurality of heaters on a substrate for heating the substrate. The plurality of heaters define a plurality of temperature regions having distinct temperatures on the substrate. A flow feature layer is formed above the substrate to define a channel extending across the substrate through each temperature region. As fluid is repeatedly pumped within the channel, it flows from one temperature region to a next temperature region to undergo thermal cycling.

A chip having a substrate for amplifying genetic material includes a substrate heater having a plurality of substrate heating resistors. The heating resistors define a first temperature zone for maintaining a first temperature, a second temperature zone for maintaining a second temperature below the first temperature, and a third temperature zone for maintaining a third temperature between the first and second temperatures, on the substrate. A flow path formed on the substrate allows conveying of reactions to the first temperature zone, the third temperature zone, and the second temperature zone so as to undergo denaturing, annealing, and extension, respectively, according to a polymerase chain reaction process, for at least one cycle.

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Georgetown, KY, United States of America

Stephen Jacob DeMoor