Abstract:
The invention generally relates to combining a plurality of flow streams. In various embodiments, a first channel transports a first laminar fluid flow, a second channel transports a second laminar fluid flow, and the first and second channels enter a merging region at an acute angle to one another along separate substantially parallel planes.
Abstract:
A microfluidic device for separating target components from a source fluid includes one or more source channels connected to one or more collection channels by one or more transfer channels. The target components of the source fluid can be magnetic or bound to magnetic particles using a know binding agent. A source fluid containing magnetically bound target components can be pumped through the source channel of the microfluidic device. A magnetic field gradient can be applied to the source fluid in the source channel causing the magnetically bound target components to migrate through the transfer channel into the collection channel. The collection channel can include a collection fluid that is stagnant until a predefined volume of source fluid is processed or a predefined volume of target components accumulate in the collection channel, at which point collection fluid can be pumped into the collection channel to flush the target components out of the collection channel. The target components can be subsequently analyzed for detection and diagnosis.
Abstract:
The invention generally relates to combining a plurality of flow streams. In various embodiments, a first channel transports a first laminar fluid flow, a second channel transports a second laminar fluid flow, and the first and second channels enter a merging region at an acute angle to one another along separate substantially parallel planes.
Abstract:
A microfluidic device for separating target components from a source fluid includes one or more source channels connected to one or more collection channels by one or more transfer channels. The target components of the source fluid can be magnetic or bound to magnetic particles using a know binding agent. A source fluid containing magnetically bound target components can be pumped through the source channel of the microfluidic device. A magnetic field gradient can be applied to the source fluid in the source channel causing the magnetically bound target components to migrate through the transfer channel into the collection channel. The collection channel can include a collection fluid that is stagnant until a predefined volume of source fluid is processed or a predefined volume of target components accumulate in the collection channel, at which point collection fluid can be pumped into the collection channel to flush the target components out of the collection channel. The target components can be subsequently analyzed for detection and diagnosis.
Abstract:
A method and apparatus for continuously separating or concentrating particles that includes flowing two fluids in laminar flow through a magnetic field gradient which causes target particles to migrate to a waste fluid stream, and collecting each fluid stream after being flowed through the magnetic field gradient.
Abstract:
A method and apparatus for continuously separating or concentrating particles that includes flowing two fluids in laminar flow through a magnetic field gradient which causes target particles to migrate to a waste fluid stream, and collecting each fluid stream after being flowed through the magnetic field gradient.
Abstract:
A high-throughput flow system includes an array of wells and a separate mechanical tip positioned within each well. Each mechanical tip is separately actuated to impart a shear stress pattern. A separate sleeve may be associated with each tip for maintaining a predetermined distance between the tip and a floor of the tip's corresponding well, with each tip being rotatable within its corresponding sleeve. Alternatively, a separate post may be associated with each tip for maintaining a predetermined distance between the tip and a floor of the tip's corresponding well, with each tip being rotatable about its corresponding post.
Abstract:
In various embodiments, an actuating mechanism is employed to displace a conductor disposed within a fluidic channel, thereby reconfiguring an electronic component.
Abstract:
We have found that etching of a body that comprises exposed Si as well as a Ti-comprising metal layer (e.g., a patterned Ti/Pt layer) in an amine-based anisotropic etchant for Si (e.g., 100.degree. C. EDP) frequently results in undesirable changes in the Ti-comprising metal layer. We have also found that the changes can be substantially reduced or eliminated by electrolytic means, namely, by making the metal layer the anode in an electrolytic cell that contains the etchant.
Abstract:
In various embodiments, an inductance of an inductor is tuned by adjusting a position of a conductor and/or a magnetic material with respect to a conducting wire of the inductor, thereby changing the electro-magnetic characteristics of the conducting wire. The conductor and/or magnetic material can be disposed in a microfluidic channel and can be moved within the microfluidic channel using a suitable actuator mechanism.