Abstract:
PROBLEM TO BE SOLVED: To provide a minute circulation device which can excellently be controlled synchronously in parallel. SOLUTION: This minute circulation device for injecting a series of movable reaction chambers (102, 103) and immiscible segmented beads (101) into micro- channels (21-26) synchronously in parallel is provided with an injecting means (10) for injecting a liquid for the chambers (102, 103) and another liquid for the beads (101) alternately in parallel and a first controlling means for controlling the propagation of one of the liquids in one channel. The first controlling means can stop the propagation of one of the liquids in a region (31) by making good use of the action of one of the liquids according to the physical and chemical characteristics. COPYRIGHT: (C)2003,JPO
Abstract:
The device for detecting elements in a fluidic medium comprises at least one acoustic resonator having a surface (7) intended for fixing the elements. The resonator includes means (8) for generating and measuring Lamb waves, favouring the generation of symmetrical Lamb waves. The device analyses the resonant frequency of the resonator in order to determine the variation in the resonant frequency of the symmetrical Lamb waves representative of the presence of the elements.
Abstract:
The invention concerns a device (1) for sealed and reversible connection of at least a capillary column (13) to a micro-fluidic component (2). The device comprises a rigid part (11) including means for positioning the capillary column (13) for connection to the micro-fluidic component (2), means for fixing and positioning the rigid part relative to the micro-fluidic component, a soft joint (16) interposed between the rigid part (11) and the micro-fluidic component (2) and through which the capillary column (13) passes, the soft joint (16) and the rigid part (11) sealing the connection when the rigid part (11) is pressed by the fixing means on the micro-fluidic component (2).
Abstract:
The invention concerns a device (1) for sealed and reversible connection of at least a capillary column (13) to a micro-fluidic component (2). The device comprises a rigid part (11) including means for positioning the capillary column (13) for connection to the micro-fluidic component (2), means for fixing and positioning the rigid part relative to the micro-fluidic component, a soft joint (16) interposed between the rigid part (11) and the micro-fluidic component (2) and through which the capillary column (13) passes, the soft joint (16) and the rigid part (11) sealing the connection when the rigid part (11) is pressed by the fixing means on the micro-fluidic component (2).
Abstract:
Devices and methods for carrying out a chemical or biochemical protocol are disclosed. In one embodiment, the chemical or biochemical protocol is performed by cycling at least one thermal transfer member between at least two temperatures while liquid samples on which the chemical or biochemical protocol is to be performed are continuously moving through at least one temperature regulated zone upon which the at least one thermal transfer member acts. In some embodiments, the device comprises a sample transport member that comprises liquid samples in sample receiving regions. The sample transport member moves the samples continuously through a temperature regulated zone which cycles between at least two temperatures while the liquid samples are moving through a temperature regulated zone on which at least one thermal transfer member acts. In some embodiments, the sample receiving regions comprise wells, hydrophillic films or hydrophillic filaments.
Abstract:
The procedure for transferring matter from at least one solute between two non-miscible liquid phases consists of moving at least one droplet (G) of the first liquid phase within a space filled with the second liquid phase using natural electrical forces. The droplet is moved along a pseudo-random trajectory (TG) designed so that the droplet sweeps at least 20 per cent, and preferably up to 50 or 80 per cent of the space filled with the second liquid phase as it passes between an injector (22) and a chemical analyzer (30). The unit incorporates an electrode grid (11) between upper and lower (10) plates, an inlet (24) and outlet (25).
Abstract:
A microfluidic component comprises at least one channel (2) delineated by a top wall (6) and a bottom wall (3) and two opposite side walls (4, 5). The distance (P) between the top wall (6) and the bottom wall (3) of the channel (2) is greater than or equal to 25 micrometers and first and second sets of nanotubes (9a, 9b) are respectively borne by the two opposite side walls (4, 5) for the component to present a particularly high ratio between the contact surface and the available volume and a limited overall surface size. In addition, the distance between the two opposite side walls (4, 5) is about a few micrometers and preferably comprised between 3 and 5 micrometers.
Abstract:
Un composant microfluidique comporte au moins un canal (2) détimité par des parois supérieure (6) et inférieure (3) et deux parois latérales opposées (4, 5). La distance (P) entre les parois supérieure (6) et inférieure (3) du canal (2) est supérieure ou égale à 25 micromètres et des premier et second ensembles de nanotubes (9a, 9b) sont respectivement portés par les deux parois latérales opposées (4, 5) de manière à remplir ledit canal (2). De plus, la distance entre les deux parois latérales opposées (4, 5) est de l'ordre de quelques micromètres de manière à ce qu'une majorité des extrémités libres des nanotubes du premier ensemble (9a) soit en contact avec les extrémités libres de nanotubes du second ensemble (9b).