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US 8,475,738 B2Granted
Photocatalytic apparatus and method for injecting microfluidic volumes
AssigneeElectronics and Telecommunications Research Institute
InventorsJongcheol Hong, Wan Joong Kim, Chul Huh, Bong Kyu Kim, Chil Seong Ah, Gun Yong Sung
Life of this patent
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Abstract
Provided is a microfluidic injection device and a method for injecting microfluidic. The microfluidic injection device includes a fluid injection chamber, a gas generation chamber applying pressure to the fluid injection chamber, and a channel connecting the fluid injection chamber to the gas generation chamber.
Claims9
A microfluidic injection device, comprising:
- a fluid injection chamber;
- a gas generation chamber containing a photocatalyst that absorbs light to generate pairs of electrons and holes to generate a gas using the pairs of electrons and holes, the gas generation chamber being configured to apply the gas to the fluid injection chamber to increase internal pressure of the fluid injection chamber;
- and
- a coupling channel configured to couple the fluid injection chamber to the gas generation chamber,
- wherein the gas generation chamber contains a promoter to delay recombination of the pairs of electrons and holes, and
- wherein the gas generation chamber is formed of a transparent material for light to pass through the gas generation chamber.
3 more elements
A method for microfluidic injection, comprising:
- preparing a microfluidic injection device comprising a fluid injection chamber, a gas generation chamber containing a photocatalyst and configured to increase internal pressure of the fluid injection chamber, and
- a coupling channel configured to couple the fluid injection chamber to the gas generation chamber;
- generating a gas by irradiating light to the photocatalyst in the gas generation chamber to generate pairs of electrons and holes;
- generating, with the photocatalyst in the gas generation chamber, a gas using the pairs of electrons and holes;
- applying, by the gas generation chamber, the gas to the fluid injection chamber to increase internal pressure of the fluid injection chamber;
- and
- extruding a fluid contained in the fluid injection chamber using the increased internal pressure of the fluid injection chamber,
- wherein the gas generation chamber further contains a promoter to delay recombination of the pairs of electrons and holes.
5 more elements
Dependencies are inferred from the claim text.