Abstract: A microreactor is shown having an inlet or feed channel, an inlet or feed zone for a flow of fluid, a reaction zone, an outlet zone and an outlet or evacuation channel, the zones and channels being in fluid communication, and at least one compound such as an enzyme capable of producing a biological or biochemical reaction with at least one constituent of the flow of fluid, the compound being attached to the surfaces of the inlet zone, reaction zone, and outlet zone.

Abstract: The acceleration measurement system has a first thermal cell optimized in sensitivity and a second thermal cell optimized in passband, which cells are connected to inputs of a servo-control loop including an amplifier presenting gain that varies as a function of input signal frequency.

Abstract: The invention concerns a component for biological or biochemical analysis microsystems formed from a support and having at least one chemically functionalised surface zone, in order to allow in said zone the formation of a chemistry for anchoring biological or biochemical elements, and/or electrically, in order to allow in said zone the formation of electrical charges. The support comprises at least one part (21) formed of a composite material, said composite material being a mixture of at least one inert material and at least one chemically and/or electrically functionalisable material to provide said functionalised surface zone.

Abstract: The invention relates to a micro-system intended to receive beads and to obtain a precise positioning of the beads at preset locations in the micro-system. This micro-system comprises a tank that has a cavity, the cavity being fitted with blocking elements allowing the beads to be ordered and stacked in the interstices between the blocking elements, the interstices constituting the preset locations. It also comprises a cap anchored hermetically to the tank and input means and output means allowing a fluid to flow in the cavity. The invention also relates to the implementation and use of the bead-filled micro-system.

Abstract: The method for production of a component with a micro-joint comprises a first step of deposition of a layer of polymer designed to constitute an assembly joint on a transfer substrate, a second step of bringing the polymer layer into contact with a micro-structured substrate and a third step of removing the transfer substrate. Due to the difference of the chemical affinity between the polymer layer and the transfer substrate on the one hand and the chemical affinity between the polymer layer and the micro-structured substrate on the other hand, the zones of the polymer layer, which are in contact with the micro-structured substrate during the second step, remain on the micro-structured substrate after the third step. These zones constitute the assembly joint.

Abstract: Microreactor comprising an inlet or feed channel, an inlet or feed zone (1) for a flow of fluid, a reaction zone (2), an outlet zone (3) and an outlet or evacuation channel, said zones (1, 2, 3) and channels (46, 48) being in fluid communication, and at least one compound such as an enzyme capable of producing a biological or biochemical reaction with at least one constituent of said flow of fluid, said compound being attached to the surfaces of said inlet zone (1), reaction zone (2), and outlet zone (3).

Abstract: The invention concerns a component for biological or biochemical analysis microsystems formed from a support and having at least one chemically functionalised surface zone, in order to allow in said zone the formation of a chemistry for anchoring biological or biochemical elements, and/or electrically, in order to allow in said zone the formation of electrical charges. The support comprises at least one part (21) formed of a composite material, said composite material being a mixture of at least one inert material and at least one chemically and/or electrically functionalisable material to provide said functionalised surface zone.

Abstract: The invention concerns a component for biological or biochemical analysis microsystems formed from a support and having at least one chemically functionalised surface zone, in order to allow in said zone the formation of a chemistry for anchoring biological or biochemical elements, and/or electrically, in order to allow in said zone the formation of electrical charges. The support comprises a part (21) formed of an inert material and covered with a layer (13) of a chemically and/or electrically functionalisable material to provide said functionalised surface zone.

Abstract: A device measures the propagation time for an acoustic wave in a continuous phase of a two-phase mix (28) comprising the continuous phase and a dispersed phase forming droplets (40) in the continuous phase. The device comprises an electro-acoustic transducer (12) capable of emitting acoustic waves (30) and outputting a reception signal of reflected acoustic waves, a signal pulse generator capable of determining a propagation time starting from signals output by the transducer, and an acoustic lens for focusing acoustic waves and the frequency of the acoustic waves being adjusted to cause reflection of the waves on the droplets of the dispersed phase, essentially located within a focusing area.