Microfluidic system including a virtual wall fluid interface port for interfacing fluids with the microfluidic system
First Claim
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1. A method of forming a fluid interface port in a microfluidic system, comprising:
- forming at least a portion of a microchannel in a substrate, and forming a fluid interface port along a length of the channel having suitable dimensions to form a virtual wall therein when the microchannel is filled with a liquid.
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Abstract
A fluid interface port in a microfluidic system and a method of forming the fluid interface port is provided. The fluid interface port comprises an opening formed in the side wall of a microchannel sized and dimensioned to form a virtual wall when the microchannel is filled with a first liquid. The fluid interface port is utilized to fill the microchannel with a first liquid, to introduce a second liquid into the first liquid and to eject fluid from the microchannel.
69 Citations
47 Claims
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1. A method of forming a fluid interface port in a microfluidic system, comprising:
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forming at least a portion of a microchannel in a substrate, and forming a fluid interface port along a length of the channel having suitable dimensions to form a virtual wall therein when the microchannel is filled with a liquid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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15. A microfluidic structure, comprising
a substrate, one or more microchannels formed in the substrate, a cover for covering the microchannel, wherein said microchannel includes a side wall, and one or more fluid interface ports formed in the cover along the length of the microchannel, wherein a virtual wall is formed in the fluid interface port when a fluid is disposed in the microchannel.
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42. A method of rendering an interior surface of a microchannel hydrophobic, comprising:
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providing a microchannel having an interior bounded by a side wall and a fluid interface port comprising an aperture formed in the side wall to provide access to the interior of the microchannel; and
introducing a hydrophobic material to the interior through the aperture, such that the hydrophobic material forms a hydrophobic patch on an interior surface of the side wall that is coaxially aligned with the aperture.
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43. A method of manufacturing a microfluidic chip, comprising:
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providing a first planar sheet having a recess formed in a top surface therein, applying a middle layer to the first planar sheet, removing a portion of the middle layer to define a channel and a fluid interface port in communication with the recess, wherein the fluid interface port is sized and dimensioned such that when a fluid is disposed in the recess and channel, the fluid forms a virtual wall at the fluid interface port, applying a second planar sheet to the first planar sheet, and removing a portion of the second planar sheet to define an access hole in communication with the fluid interface port. - View Dependent Claims (44, 45, 46, 47)
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Specification