摘要:
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.
摘要:
A biosensor and a method of detecting one or more analytes is disclosed. The biosensor comprising a waveguide for receiving and propagating an optical radiation along the length of the waveguide as a long range surface plasmon-polariton (LRSPP) wave with its transverse electric field substantially perpendicular to the width of the waveguide. The waveguide comprising an input region for receiving the optical radiation at one end; an output region at an opposed end for emitting the propagated optical radiation away from the waveguide and towards a detector; and a sensing region between the input and output region; a dielectric cladding surrounding the waveguide; and at least one fluidic channel formed in the dielectric cladding for moving a fluid towards and away from the sensing region. In some embodiments, the biosensor and methods for analyte detection feature one or more of the following : high detection sensitivity and specificity, scalability and multiplex capacity, ability to simultaneously analyze a plurality of different analytes, and ability to detect or measure multiple individual binding events in real-time.
摘要:
The invention pertains to a system for operando measurements comprising: - a reactor (1) comprising a reactor chamber (9) having at least one window (19) transparent for radiation for irradiating a sample (24) provided inside the reaction chamber (9), - a radiation source (21, 31) for generating the radiation for irradiating the sample (24), wherein the radiation source (21, 31) is arranged to irradiate the sample at an irradiation location situated on the sample; - a detection unit (26, 33) for detecting radiation scattered, emitted, reflected or diffracted by the sample (24) or transmitted through said sample (24), - a sampling capillary (12) comprising an orifice (14) for collecting a fluid sample inside the reactor chamber (9), wherein the orifice (14) of the sampling capillary (12) is arranged at a fixed position relative to the irradiation location, wherein the reactor (1) is movable relative to the radiation source (21, 31).
摘要:
This patent document discloses techniques, systems, and devices for detecting a target substance using optical nonlinear wave mixing for enhanced detection sensitivity and accuracy. In one aspect, a method for measuring α-synuclein in a body fluid of a patient with high detection sensitivity and accuracy and providing early stage Parkinson's disease detection is provided. The method may comprise: supplying to a capillary analyte cell a fluidic sample that includes a body fluid of a patient containing α-synuclein, wherein the capillary analyte cell is located in a nonlinear optical four-wave mixing device; directing laser light from the nonlinear optical four-wave mixing device into the capillary analyte cell to cause nonlinear optical four- wave mixing in the fluidic sample to generate a four-wave mixing signal that contains information on the α-synuclein in the fluidic sample; and processing the four-wave mixing signal to extract information on the α-synuclein in the fluidic sample.
摘要:
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).
摘要:
Provided herein is an lateral microscope and imaging system that permits e.g., direct imaging of cells, interaction of cells with a surface material, and cell responses to external stimuli (e.g., contact with one or more biological agents). Also provided herein are methods and assays for measuring a variety of cell characteristics/responses using the lateral microscope with or without additional components.
摘要:
본 발명의 일 측면에 따른 흐름셀을 갖는 미세유체칩은, 시료 주입구, 상기 시료 주입구와 연통된 광 입사구, 상기 광 입사구에서 이격 배치된 검출구가 형성된 제1기판과, 상기 광 입사구와 마주하며 광원의 빛이 투과하는 광 입사부와 상기 검출구와 마주하며 광원의 빛이 투과하는 검출부를 구비하며 상기 제1기판에 결합되는 제2기판, 및 상기 광 입사구에 일측 단부가 연결되며, 상기 검출구에 타측 단부가 연결되는 흐름셀을 포함하며, 상기 제1기판과 상기 제2기판은 빛을 흡수할 수 있는 소재로 이루어진다.
摘要:
Disclosed is a method of detecting a plurality of analytes in a sample comprising: selecting one or more primers, labelling each primer with a different dye, and placing in a reaction vessel; adding a sample to be analysed; subjecting sample to a multiplication process,- separating the amplicons according to size; quantifiying the sizes present and determining the colour of each size; comparing the resulting quantification and colours with known data to determine the nature of the amplicons. Also disclosed is an apparatus for carrying out said method.