Abstract:
The present invention provides a method for measuring the amount of absorbance of a sample in a microcapillary based on measuring the absorbance in the sample.
Abstract:
A microfluidic assay system including a microfluidic cartridge and an associated microfluidic operator system. The microfluidic cartridge comprises a base part, having a first face with a recess and a foil fixed to the base part for covering the recess and providing a microfluidic cartridge foil face. The base part with the recess and the foil forms a flow channel and a sink in fluid communication with each other. The microfluidic cartridge comprises an inlet opening into the flow channel upstream to the reaction section. The operator system includes a piston, a temperature regulating element and an actuator positioned such that the foil face of the microfluidic cartridge can be positioned in contact with the operative system with the reaction section in close proximity to the temperature regulating element while the actuator is associated to the sink section to depress the foil covering the sink section and the piston is associated to the flow channel at an upstream valve section to depress the foil to close off the flow channel upstream to the reaction section.
Abstract:
Die vorliegende Erfindung betrifft die Verwendung eines Substrats zur Verstärkung der Fluoreszenz eines fluoreszierenden Moleküls, wobei das Substrat einen festen polymeren Träger mit einer Mehrzahl voneinander getrennter Vertiefungen umfasst und der feste Träger zumindest teilweise mit mindestens einem Metall beschichtet ist.
Abstract:
Described herein is a thermostatted device, as well as the corresponding method, for detecting biological contaminants, in particular coliform bacteria in a water sample, which are designed for making measurements of luminescence at different wavelengths, by resorting to a flow cell equipped with a plurality of measurement chambers, hydraulically connected but not in optical communication with one another, into which the water sample is conveyed without the use of cuvettes, there being provided in each of said chambers means for exciting the sample present and detecting the luminescence of the bacterium, an inlet for injection of the fluorophore, and microvalves and capillary vessels for supplying to the individual measurement chambers said fluorophore in the amount necessary for making the measurement.
Abstract:
Provided in one example is an analyte detection apparatus that includes surface enhanced luminescence (SEL) structure. A dielectric layer underlies the SEL structure. An electric field generating base underlies the dielectric layer. The electric field generating base is to apply an electric field about the SEL structures to attract charged ions to the SEL structures.
Abstract:
A radiation carrier (100) for carrying at least a radiation beam (103) has, on a surface (102) thereof, at least one excitation grating (101), for directing at least an excitation radiation beam (104) directionally out of the radiation carrier, thereby illuminating a region of interest (105); and at least one structure (108) for redirecting emission radiation emanating from the region of interest. Further a sensor is provided comprising at least one such radiation carrier (100) and at least one detector, the structure (108) being adapted for redirecting radiation from the region of interest (105) into the at least one detector (110).
Abstract:
Provided in one example is an apparatus, including a microfluidic channel supported by a substrate. An optical spectrometer includes a waveguide supported by the substrate. The waveguide includes a coupler and outcouplers. A light source directs light to the coupler of the waveguide. Optical sensors are supported by the substrate. Each of the optical sensors is optically coupled to one of the outcouplers.
Abstract:
A modular testing device includes a base unit and an expansion unit that communicates with the base unit. The expansion unit includes a housing, a receptacle in which a sample holder containing a biological sample and reagent mixture can be placed, and an optical assembly positioned in the housing. The optical assembly is configured to amplify and detect a signal from the biological sample and reagent mixture. Data that is collected in the optical assembly is communicated to the base unit.
Abstract:
Disclosed herein are spectrofluorometric adaptors for cell holders in spectrofluorometers and spectrofluorometric methods that enable fluorescence detection from surfaces of a microcell in conventional horizontal-beam spectrofluorometers equipped with standard cell holders and having multiple excitation channels.
Abstract:
A liquid sample analyzer (10) includes a liquid sample source (36), a flow cell (100), an optical device (20, 30) and a plurality of optical fibers (110, 120). The flow cell (100) is configured to receive a flow of a liquid sample from the liquid sample source (36). The plurality of optical fibers (110, 120) optically connect the flow cell (100) to the optical device (20, 30) to transmit light between the flow cell (100) and the optical device (20, 30).