摘要:
The invention relates to a method for the amplification of DNA and apparatus for such amplification. The method comprises steps typically found in amplification methods but utilises an optical procedure to detect denaturation of DNA or attainment of the desired denaturation temperature. The apparatus (1) comprises a temperature controllable chamber (2) including a rotor (3) for holding a plurality of reaction vessels (see 7 for example) for reaction mixtures including DNA, a drive means for the rotor, a heater (8) within the chamber for transiently supplying infrared energy to the reaction vessels, and an optical system (12-16) for determining denaturation of at least a reference DNA or for detecting attainment of a desired denaturation temperature in at least a reference reaction vessel.
摘要:
A microfluidic chip includes one or more reaction chambers to hold fluids for chemical or biochemical reactions, such as PCR. A non-contact heat source heats the reaction chamber and the fluid, such that the heat source does not contact the reaction chamber or the fluid. The heat source can heat the reaction chamber and the fluid separately, where the reaction chamber and the fluid separately absorb heat radiation from the heat source. A temperature sensor acquires a temperature of the reaction chamber and/or the fluid. Control circuitry controls the heat source according to a cycling profile for the reaction in the fluid to cycle the heat source between heating and not heating the reaction chamber and the fluid based on the temperature acquired by the temperature sensor. Cooling can be provided passively or actively.
摘要:
Provided herein is a microplate for polymerase chain reaction (PCR), comprising a substrate formed of a material that is susceptible to heating PCR samples upon the application of an electromagnetic field and/or electromagnetic energy to said substrate. The substrate provides a PCR ramp rate of at least 5°C/second upon the application of an electromagnetic field and/or electromagnetic energy to said substrate.
摘要:
The present invention relates generally to a system and a method for thermo-optical measurements in a droplet (23) of aqueous solution comprising particles of interest, the method comprising the following steps: providing the droplet of aqueous solution with a volume of less than 200nl, wherein the aqueous solution is a first liquid (21) and at least a part of the particles of interest are fluorescent particles; embedding the droplet (23) of aqueous solution at least partly in a second liquid (21); irradiating a laser light beam into the droplet to obtain a spatial temperature distribution in the droplet around the irradiated laser light beam; exciting fluorescently said fluorescent particles and detecting the fluorescence at least at one position or at around one position in the droplet or detecting the fluorescence distribution of said fluorescently excited particles, wherein said detection of fluorescence is performed at least once at a predetermined time after the start of the laser irradiation; and determining a characteristic of the particles of interest from the detected fluorescence intensity or fluorescence intensity distribution.
摘要:
Disclosed is a non-contact heating type gene amplification system. The non-contact heating type gene amplification system includes separate light sources for each step of a polymerase chain reaction in order to perform a high-speed temperature cycle by moving a rotation unit, in which a plurality of sample chambers are formed, to places at which the sample chambers are controlled at the temperatures corresponding to each step.
摘要:
The present invention pertains to a system for processing involving pipetting and/or analyzing liquid samples comprising a sealing arrangement for heat-sealing a microplate (28) having an upper face provided with a plurality of open-top wells (5), comprising a pressing element (8) provided with a pressing face for pressing a thermally fixable sealing cover (9) for sealing said wells on said microplate and a plurality of heat releasing sections (12) located in a manner to release heat to said microplate-pressed sealing cover except for foil regions covering openings of said wells. It further relates to a method for heat-sealing a microplate provided with a plurality of wells, comprising the following steps of: disposing a thermally fixable sealing cover over said wells; pressing said sealing cover on said microplate by means of a pressing element; and releasing heat to said sealing cover except for regions covering openings of said wells so as to thermally fix said sealing cover to said microplate.
摘要:
A method of amplifying one or more target nucleic acid sequence(s) in a PCR buffer solution comprising one or more target nucleic acid sequence(s), a nucleic acid polymerase, NTPs, at least a first primer and a second primer is provided. The PCR buffer solution is contained in an elongated vessel (2). The solution within the vessel (2) is locally heated in a spatio-temporally varying manner. Fluid flows (31-34) circulating within the vessel are established. At least a fraction of the PCR buffer solution cyclically travels between regions (35, 36; 37, 38) having different temperatures, giving rise to a temperature cycling.