Abstract:
A device for microfluidic transport includes a first fluid reservoir, a second fluid reservoir spaced from the first fluid reservoir, a main fluid channel communicated with the first fluid reservoir and the second fluid reservoir, an auxiliary fluid channel communicated with the main fluid channel, and a fluid actuator within the auxiliary fluid channel asymmetric to the main fluid channel such that operation of the fluidic actuator is to induce fluid flow in the main fluid channel from the first reservoir toward the second reservoir.
Abstract:
A microfluidic diagnostic chip may comprise a microfluidic channel, a functionalizable enzymatic sensor in the microfluidic channel, the functionalizable enzymatic sensor comprising a binding surface to bind with a biomarker in a fluid, and a microfluidic pump to pass the fluid over the binding surface. A microfluidic device may comprise a number of pumps to pump a fluid though the number of microfluidic channels and a number of microfluidic channels comprising at least one sensor to detect a change in a chemical characteristic of the fluid in response to presence of the fluid on the sensor.
Abstract:
A device includes a microfluidic channel structure on a substrate with a first fluid actuator and a second fluid actuator within the microfluidic channel structure. One of the fluid actuators is selectively employable to at least partially reverse fluid flow within at least a portion of the microfluidic channel structure in response to a blockage or to prevent a blockage.
Abstract:
In accordance with an embodiment of the invention, there is provided a method for: a) high-throughput, multiplexed, affinity-based separation of proteins - especially low abundance proteins - from complex biological mixtures such as serum; and b) high- throughput, multiplexed, affinity-based separation of cells - especially rare cells - from complex biological mixtures such as blood or blood fractions. The separation of proteins or cells is achieved based on differential binding to affinity-capture beads of different sizes and then sorting the protein-bound or cell-bound beads using the concept of centrifugal-induced Dean migration in a spiral microfluidic device. This method enables continuous-flow, high throughput affinity-separation of milligram-scale protein samples or millions of cells in minutes after binding. This is particularly applicable to the isolation of antigen-specific antibodies from polyclonal sera and antigen-specific immune cells or circulating tumor cells from blood, both of which are otherwise highly labor-intensive and expensive to perform.
Abstract:
The present invention relates to a method for the sensitive identification of high-affinity complexes of two ligands (2, 3, 4, 5, 6, 7) and a receptor (1). To this end, a plurality of different ligands (2, 3, 4, 5, 6, 7) of a chemical library are brought into contact with at least one receptor (1) in a solution. The ligands of the library have single-stranded DNA (8, 9) or RNA with a base length of 2 to 10 bases or, alternatively, more than 10 bases. The solution is incubated for a specified period of time and complexes of two ligands (2, 3, 4, 5, 6, 7) and a receptor (1) are identified.
Abstract:
In one aspect, the inventive concepts disclosed herein are directed to a sensor assembly which contains a first planar substrate and a second planar substrate which respectively support opposing sensor arrays and contains an integrated flow path extending between the first and second substrates. Sensor assembly contains a first planar substrate having a base layer, and a conductive layer formed on a first planar surface of the base layer. Base layer may be made from, for example, ceramic, polymer, foil, or any other type of material known to someone of ordinary skill in the art. Conductive layer contains at least at least two electrically isolated electrical contacts made, for example, using a thick film approach (e.g., screen printing, rotogravure, pad printing, stenciling conductive material such as carbon, Cu, Pt, Pd, Au, and/or Nanotubes, etc.) or a thin firm approach (e.g., by sputtering, thermal spraying, and/or cold spraying conductive material).
Abstract:
A system includes a microfluidic device configured to isolate one or more particles from a mixture, a flow rate matching device configured to match flow rate of the microfluidic device with flow rate of an electrical measurement device configured to measure an electrical property of the isolated particles, and an electrical measurement device configured to measure an electrical property of the isolated particles.
Abstract:
Provided herein are devices and methods suitable for sequencing, detecting, amplifying, analyzing, and performing sample preparation procedures for nucleic acids and other molecules. In some cases, the devices and methods provided herein are used for computation.
Abstract:
A method of separating one or more binding molecules that are specifically bound to one or more binding targets from a mixture of bound and unbound molecules includes introducing the mixture into at least one inlet of a microfluidic device at a sample flow rate. The microfluidic device includes at least one curved channel, wherein each curved channel has a length, a radius, and a cross-section of a height and a width defining an aspect ratio adapted to isolate the one or more molecules bound to the binding target along portions of the cross-section of the channel based on size. Bound molecules flow along a radially innermost portion of the channel to a first outlet, and unbound molecules flow along one or more other portions of the channel to at least one other outlet, thereby separating the one or more binding molecules that are specifically bound to the one or more binding targets from the mixture of bound and unbound molecules.