2041 results about "Main channel" patented technology

The invention provides a microfabricated device for sorting cells based on a desired characteristic, for example, reporter-labeled cells can be sorted by the presence or level of reporter on the cells. The device includes a chip having a substrate into which is microfabricated at least one analysis unit. Each analysis unit includes a main channel, having a sample inlet channel, typically at one end, and a detection region along a portion of its length. Adjacent and downstream from the detection region, the main channel has a discrimination region or branch point leading to at least two branch channels. The analysis unit may further include additional inlet channels, detection points, branch points, and branch channels as desired. A stream containing cells is passed through the detection region, such that on average one cell occupies the detection region at a given time. The cells can be sorted into an appropriate branch channel based on the presence or amount of a detectable signal such as an optical signal, with or without stimulation, such as exposure to light in order to promote fluorescence.

A microfluidic device for analyzing and / or sorting biological materials (e.g., molecules such as polynucleotides and polypeptides, including proteins and enzymes; viruses and cells) and methods for its use are provided. The device and methods of the invention are useful for sorting particles, e.g. virions. The invention is also useful for high throughput screening, e.g. combinatorial screening. The microfluidic device comprises a main channel and an inlet region in communication with the main channel at a droplet extrusion region. Droplets of solution containing the biological material are deposited into the main channel through the droplet extrusion region. A fluid different from and incompatible with the solution containing the biological material flows through the main channel so that the droplets containing the biological material do not diffuse or mix. Biological material within the droplets can be analyzed and / or sorted by detecting a predetermined characteristic of the biological sample in each droplet and sorting the droplet accordingly.

Techniques for controlling analytical instruments are provided. A sequence of steps can be utilized to specify wells of a microfluidic device, mobility to be applied to fluid in the wells, and the duration to apply the mobility. For example, fluids can be sequentially run past down a main channel to a detection zone of the microfluidic device in order to analyze the fluids. In order to increase the efficiency of the analysis, fluids can be processed in parallel by running one fluid down the main channel while another fluid is loaded to the main channel.

Techniques for controlling analytical instruments are provided. A sequence of steps can be utilized to specify wells of a microfluidic device, mobility to be applied to fluid in the wells, and the duration to apply the mobility. For example, fluids can be sequentially run past down a main channel to a detection zone of the microfluidic device in order to analyze the fluids. In order to increase the efficiency of the analysis, fluids can be processed in parallel by running one fluid down the main channel while another fluid is loaded to the main channel.

Information received on a side channel from a TV content source is placed in a graphics plane of a TV and overlaid onto a video plane of the TV, which contains content from a main channel. The graphics plane content in each side channel may be keyed to content ratings setting so that the TV selects the side channel appropriate for a user-input rating setting of the TV and overlays the content of the side channel onto the video plane, to thereby conform the composite image that is displayed on the TV to the viewer-input ratings setting.

The present invention provides an analysis chip allowing customization in accordance with the items required for a given test, and method for producing the same. On a chip (313) there are formed dispensing channels (222) connected to respective detection reservoirs (223) and branching off from a main channel (221). Each branch channel (222) is provided with a flow control unit (314) responsible for an opening and closing of the channel. It is possible to achieve multiple analysis steps by appropriately setting an opening and closing of flow control units provided to an analysis portion.

A microfluidic device has a plurality of H-shaped micro channels not connected to each other and formed on a substrate. Each of the H-shaped micro channels comprises two main channels separately placed on two opposite sides in parallel and a plurality of sub-channels perpendicularly connected to the two main channels. The present invention is designed in such a way that various reagents dropped into different H-shaped micro channels are immobilized on respective sub-channels because of the different widths of the main channel and sub-channel. Afterwards the reagents are coated with a layer of polymer. The polymer has a porous structure that allows the passage of any sample to be tested. Finally, a plurality of upper channels parallel to one another are directly fabricated in the polymer, or in another layer of polymer stacked on the previous polymer.

Devices and methods for de novo synthesis of large and highly accurate libraries of oligonucleic acids are provided herein. Devices include structures having a main channel and microchannels, where the microchannels have a high surface area to volume ratio. Devices disclosed herein provide for de novo synthesis of oligonucleic acids having a low error rate.

The invention relates to a seamless switching method for a video source and is applied to a video processor which is configured with a main channel, and a PIP (picture in picture) channel and is suitable for connecting a first video source and a second video source, wherein the method comprises the steps as follows: a) receiving a video source switching instruction; b) starting output of a PIP channel, displaying a picture of the first video source output by the PIP channel in the top and completely covering the picture of the first video source output by the main channel; c) switching the input source of the main channel from the first video source to the second video source; d) setting an image processing parameter of the main channel and outputting a picture display parameter while the signal of the second video source is stable and waiting of the signal is not over-timed, and displaying the picture of the second video source output by the main channel in the top according to appointed picture switching special effect; and e) closing the output of the PIP channel. Therefore, the method of the invention could solve the problem of short blank screen and stiff switching effect in the video source switching process in prior art, and could realize the switching special effect of a plurality of pictures.

Devices and methods for de novo synthesis of large and highly accurate libraries of oligonucleic acids are provided herein. Devices include structures having a main channel and microchannels, where the microchannels have a high surface area to volume ratio. Devices disclosed herein provide for de novo synthesis of oligonucleic acids having a low error rate.