摘要:
System and method for fluorescent light excitation and detection from samples to enhance the numerical aperture and/or reduce the cross-talk of the fluorescent light.
摘要:
Apparatus and methods for detecting analytes in a sample are provided. The apparatus includes: one or more channels having a dectection zone (14); one or more irradiation sources (16) disposed for irradiating the detection zone (14) with radiation; a detector (34) capable of collecting at least one chage corresponding to an emission beam (22) emitted from the detection zone (14), the detector (34) having an output; and a time delay integration system coupled to the detector for effecting time delay integration of the at least one charge by accumulating the at least one charge before reading the at least one charge at the output of the detector. Various embodiments provide an apparatus with a multi-notch filter. Various embodiments provide a solid state laser, a micro-wire laser, or an organic light-emitting diode as a irradiation source.
摘要:
Various embodiments described in the application relate to an apparatus, system, and method for fluidically controlling, within a conduit, discrete volumes of one or more fluids that are immiscible with a second fluid. The discrete volumes can be used for biochemical or molecular biology procedures involving small volumes, for example, microliter-sized volumes, nanoliter-sized volumes, or smaller. The system can comprise combinations of detectors, controllers, valves, and fluid supply units to control the spatial size, location and/or fluidic composition of discrete volumes separated from one another by a fluid that is immiscible with the fluid(s) of the discrete volumes, for example, aqueous immiscible-fluid-discrete volumes separated by an oil.
摘要:
System and method for fluorescent light detection from biological samples to enhance the numerical aperture and/or reduce the cross-talk of the fluorescent light. The numerical aperture is enhanced by changing the material of construction of a numeral aperture (NA) enhancing element, such as a truncated sphere, in the fluorescent light detection system, such that NA enhancing optial element (40) is constructed of a different material than the housing (560) containing the sample. To eliminate the spherical aberration, the housing is positioned in a source plane that is offset from the theoretical aplanatic source plane. Cross-talk is reduced by using a mask (440).
摘要:
System and method for fluorescent light (30) excitation and detection from samples (10) to enhance the numerical aperture and/or reduce the cross-talk of the fluorescent light (30).
摘要:
The invention relate to systems and methods for sequencing polynucleotides, as well as detecting reactions and binding events involving other biological molecules. The systems and methods may employ chamber-free devices and nanosensors to detect or characterize such reactions in high-throughput. Because the system in many embodiments is reusable, the system can be subject to more sophisticated and improved engineering, as compared to single use devices.
摘要:
A microfluidic device may include a sample distribution network including a plurality of sample chambers configured to be loaded with biological sample for biological testing of the biological sample while in the sample chambers. The sample distribution network may further include a plurality of inlet channels, each inlet channel being in flow communication with and configured to flow biological sample to a respective sample chamber, and a plurality of outlet channels, each outlet channel being in flow communication and configured to flow biological sample from a respective sample chamber. At least some of the sample chambers may include a physical modification configured to control the movement of the meniscus so as to control bubble formation or dried reagent positioned within the at least some sample chambers proximate the inlet channels in flow communication with the at least some sample chambers.
摘要:
The present disclosure provides apparatus, systems and method for detecting separately and substantially simultaneously light emissions from a plurality of localized light-emitting analytes. A system according to exemplary embodiments of the present disclosure comprises a sample holder having structures formed thereon for spatially separating and constraining a plurality of light-emitting analytes each having a single nucleic acid molecule or a single nucleic acid polymerizing enzyme, a light source configured to illuminate the sample holder, an optical assembly configured to collect and detect separately and substantially simultaneously light emissions associated with the plurality of light emitting analytes. The system may further include a computer system configured to analyze the light emissions to determine the structures or properties of a target nucleic acid molecule associated with each analyte.
摘要:
A device for performing polymerase chain reactions using cooling members not used in conventional thermal cyclers. A device for performing polymerase chain reactions may include a sample holder configured to receive a nucleic acid sample, a heating system configured to raise the temperature of the sample, a cooling system configured to lower the temperature of the sample, and a controller configured to operably control the heating system and the cooling system to cycle the device through a desired time-temperature profile. The cooling system may comprise at least one cooling member selected from a synthetic jet ejector array, a vibration-induced droplet atomization system, a vibrating diaphragm system, a piezo fan, a Cold Gun, a microchannel cooling loop, and a Cool Chip.