Efficient microfluidic particulate matter (pm) removal device using staggered herringbone micromixers
AssigneeThe Hong Kong University of Science and Technology
InventorsYANGFAN CHEN, HO NAM CHAN, HONGKAI WU
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Abstract
Microfluidic devices to efficiently remove particulate matter (PM) in air are provided, as are methods of fabricating and using the same. A device can include a channel having a structure configured to generate chaotic advective flow in air within the channel. The channel structure can include a plurality of SHMs disposed within the channel, where each SHM comprises a plurality of grooves each having a width of 200 μm or less and a spacing between each groove of 200 μm or less. The plurality of SHMs can be configured to introduce microvortices in air flow within the channel.
Claims20
A microfluidic device, comprising:
- a channel having a structure configured to generate chaotic advective flow of air within the channel,
- wherein the structure of the channel comprises an adhesive surface.
A method of fabricating a microfluidic device, the method comprising:
- i) preparing a first master and a second master using photolithography;
- ii) casting a precursor on each of the first master and the second master;
- iii) curing the precursor on the first master and the second master to form a first mold and a second mold, respectively;
- iv) peeling the first mold off the first master and the second mold off the second master;
- v) sandwiching additional precursor material between the first mold and the second mold, along with a spacer between the first mold and the second mold;
- vi) curing the additional precursor material to form a staggered herringbone micromixers layer (SHML) comprising staggered herringbone micromixer (SHM) on both sides thereof;
- vii) removing the first mold, the second mold, and the spacer to obtain the SHML;
- viii) repeating steps i)-vii) to obtain a plurality of SHMLs;
- ix) stacking the SHMLs of the plurality of SHMLs to form a stack, the microfluidic device comprising the stack,
- wherein each SHM comprises a plurality of grooves each having a width of 200 μm or less and a spacing between each groove of 200 μm or less.
Dependencies are inferred from the claim text.