摘要:
A method for solid state bonding of a plurality of metallic layers and devices made by that method are disclosed. First and second metallic layers are solid state bonded utilizing a protective coating on the non-bonded surfaces that engage the pressure applying appliance to prevent the surfaces from adhering to the pressure applying appliance and to protect the surfaces from imprinting during the bonding process. The invention can be used to fabricate micro-channel devices with smooth outer surfaces and eliminate mold release compounds utilized in conventional bonding procedures.
摘要:
A method for solid state bonding of a plurality of metallic layers and devices made by that method are disclosed. First and second metallic layers are solid state bonded utilizing a protective coating on the non-bonded surfaces that engage the pressure applying appliance to prevent the surfaces from adhering to the pressure applying appliance and to protect the surfaces from imprinting during the bonding process. The invention can be used to fabricate micro-channel devices with smooth outer surfaces and eliminate mold release compounds utilized in conventional bonding procedures.
摘要:
The present invention relates to an optical detection cell for micro-fluidics. The detection cell provides a first layer, a detection cell layer contacting the first layer, a third layer contacting the detection cell layer and a detection channel defined through the detection cell to serve as a light path for receiving light for detecting a molecule Methods of detecting molecules and making the detection cell are also disclosed
摘要:
A device for sample analysis includes a microfluidic device for separating analytes of a sample comprising a liquid, the microfluidic device comprising a substrate having a first surface and a second surface opposite the first surface, the substrate defining features that collectively occupy an area of the substrate of about 0.1 to 10 cm2, the features comprising a sample input port located at the first surface; a drying agent input port located at the first surface; an enrichment column; a separation column; switching ports located at the second surface; and fluid-conducting passages extending through the substrate from the switching ports to the sample input port, the drying agent input port, the enrichment column and the separation column. Also provided are methods and systems for separating analytes from a sample.
摘要:
A fluidic device is provided that includes a body and a contiguous electrically conductive layer. The body has interior and exterior surfaces. The interior surface defines at least a well and a fluid-transporting feature, e.g., a microfeature in fluid-communication with the well. The well has a sidewall and an exterior opening terminating at the exterior surface. The contiguous electrically conductive layer is located on at least the sidewall of the well and selected regions of the interior and exterior surfaces so as to form a contact pad region on the exterior surface in electrical communication with any fluid within the fluid-transporting feature. Also provided is a method for forming a fluidic device.
摘要:
Provided are apparatuses and methods for introducing particles into a microdevice conduit. Also provided are microdevices containing a plurality of particles that occupy at least about 25 volume percent of a microconduit. In some instances, particles may controllably form a particle bridge in a bridging zone within a microdevice.
摘要:
A fluidic device is provided that includes a plurality of fluid-transporting features extending from a common inlet to a common outlet and a means for effecting fluid flow through the fluid-transporting features. The features are associated with differing fluid dwell times. The means for effecting fluid flow cooperates with the fluid-transporting features to merge fluids from the fluid-transporting features in a manner effective to produce an output stream from the common outlet that exhibits at least one desired characteristic generated as a result of the differing dwell times. Also provided is a method for producing a fluid stream exhibiting at least one desired characteristic. Optionally, the device and/or method are used in microfluidic applications.
摘要:
The invention described herein provides a mass spectrometry system, having an ion source including an ionization device for producing ions, a collection conduit adjacent to the ionization device for collecting ions produced by the ionization device, a first gas source for supplying gas to desolvate ions produced by the ionization device, a second gas source for supplying gas at a defined flow to the ionization region, and a detector downstream from the ion source for detecting ions produced by the ion source. The invention also provides an ion source including an ionization device for producing ions, a collection conduit adjacent to the ionization device for collecting ions produced by the ionization device, a first gas source for supplying gas to desolvate ions produced by the ionization device, and a second gas source for supplying gas at a defined flow to the ionization region. A method for producing analyte ions is also disclosed. The method includes producing analyte ions from an ionization device, directing a first heated gas toward the analyte ions to desolvate the analyte ions, and directing a second gas toward the analyte ions at a defined and continual flow rate.
摘要:
A system for controlling fluid flow in a microfluidic circuit located in a liquid chromatograph includes at least one microfluidic channel and a flexible membrane adjacent the at least one microfluidic channel, wherein when actuated, the flexible membrane deflects into the microfluidic channel, thus impeding fluid flow in the microfluidic channel.
摘要:
Fluidic separation devices and methods with reduced sample broadening are provided. A column is located downstream from a holding chamber, and a flow providing means provides fluid flow effective to convey a sample along a flow path that extends from the holding chamber into the separation column. The sample is typically focused in the flow path upstream from the separation column. Optionally, the invention may be employed with electrospray mass spectrometry and in microfluidic applications.