Microfabricated elastomeric valve and pump systems
First Claim
1. A fluidic logic device comprising:
- an elastomeric block having a Young'"'"'s modulus between about 10 Pa and about 100 GPa;
an input channel formed in the elastomeric block;
a first microfabricated channel formed in the elastomeric block;
a second microfabricated channel formed in the elastomeric block; and
a third microfabricated channel formed in the elastomeric block and in fluidic communication with the input channel, whereinthe third microfabricated channel is adapted to be pressurized by the input channel to represent a signal only when both the first microfabricated channel and the second microfabricated channel are counter-pressurized.
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Abstract
A method of fabricating an elastomeric structure, comprising: forming a first elastomeric layer on top of a first micromachined mold, the first micromachined mold having a first raised protrusion which forms a first recess extending along a bottom surface of the first elastomeric layer; forming a second elastomeric layer on top of a second micromachined mold, the second micromachined mold having a second raised protrusion which forms a second recess extending along a bottom surface of the second elastomeric layer; bonding the bottom surface of the second elastomeric layer onto a top surface of the first elastomeric layer such that a control channel forms in the second recess between the first and second elastomeric layers; and positioning the first elastomeric layer on top of a planar substrate such that a flow channel forms in the first recess between the first elastomeric layer and the planar substrate.
129 Citations
10 Claims
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1. A fluidic logic device comprising:
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an elastomeric block having a Young'"'"'s modulus between about 10 Pa and about 100 GPa; an input channel formed in the elastomeric block; a first microfabricated channel formed in the elastomeric block; a second microfabricated channel formed in the elastomeric block; and a third microfabricated channel formed in the elastomeric block and in fluidic communication with the input channel, wherein the third microfabricated channel is adapted to be pressurized by the input channel to represent a signal only when both the first microfabricated channel and the second microfabricated channel are counter-pressurized. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A fluidic logic device comprising:
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an elastomeric block having a Young'"'"'s modulus between about 10 Pa and about 100 GPa; and a plurality of microfabricated channels formed in the elastomeric block, each channel containing a pressure or flow representing a signal, a change in the pressure or flow in a first channel resulting in a change in the pressure or fluid flow in a second channel consistent with a logic operation, wherein a one way valve is positioned in at least one of the first channel and the second channel; the second channel comprises an inlet in communication with an outlet through a flow restrictor, the second channel including a junction upstream of the flow restrictor; and the first channel comprises at least two control channels connected at the junction through one-way valves, such that pressures of the control channels are reflected at the outlet consistent with an AND-type truth table.
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Specification