Abstract: Provided herein are microfluidic circuits that include at least one device for forming a quantity of drops of a solution in a carrier fluid and at least one storage zone for storing drops produced by the microfluidic device. Such microfluidic circuits are useful, for example, for the analysis of a solution containing a biological sample.

Abstract: The invention relates to a microfluidic circuit including at least one microchannel for the flow of a first fluid conveying drops or bubbles of at least one second fluid, characterized in that the height of the microchannel is sized so as to crush the drops or bubbles during the movement thereof, and in that the microchannel comprises at least one trough, extending at least partially in the direction of flow of the first fluid or an area for trapping drops or bubbles, said area or the trough having a height that is greater than the height of the microchannel, such that at least some of the drops or bubbles of the second fluid in the microchannel are drawn and guided into the trough or into the trapping area.

Abstract: The subject matter of the present invention is a microfluidic process for treating and analysing a solution containing a biological material, comprising a step of introducing the solution into microchannels of a microfluidic circuit (1), a step of forming drops of this solution, under the effect of modifications of the surface tension of the solution, a step of moving the drops to one or more drop storage zone(s) (130), under the effect of modifications of the surface tension of the drops, a step of treating the drops and a step of analysing the drops.

Abstract: The subject of the present invention is a microfluidic circuit in which are defined microchannels able to contain fluids and including at least one device for forming drops of a solution, guiding the drops to a storage zone in which one of the drops can be brought into contact with a drop of another solution, the walls of the microchannel portion forming the first drop-formation device diverging so as to cause drops of the first solution to detach under the effect of the surface tension of the first solution; the first guide include wall portions of the microchannels that diverge so as to cause the drops to move along under the effect of the surface tension of the first solution.

Abstract: The invention relates to a device (1) for forming droplets in a microfluidic circuit, the device comprising a chamber (3) containing a first fluid and defined by two opposite walls (10, 11) that diverge relative to each other in at least one given direction, and a microchannel (8) containing a second fluid and leading into a zone of said chamber (3) that is upstream relative to the given direction, the outlet of the microchannel (8) into the chamber (3) constituting an enlargement in the flow section for the second fluid, and the enlargement giving rise to droplets (14) of the second fluid forming within the first fluid.

Abstract: The invention relates to a device (1) for forming droplets in a microfluidic circuit, the device comprising a chamber (3) containing a first fluid and defined by two opposite walls (10, 11) that diverge relative to each other in at least one given direction, and a microchannel (8) containing a second fluid and leading into a zone of said chamber (3) that is upstream relative to the given direction, the outlet of the microchannel (8) into the chamber (3) constituting an enlargement in the flow section for the second fluid, and the enlargement giving rise to droplets (14) of the second fluid forming within the first fluid.

Abstract: The invention relates to a microfluidic circuit including at least one microchannel for the flow of a first fluid conveying drops or bubbles of at least one second fluid, characterised in that the height of the microchannel is sized so as to crush the drops or bubbles during the movement thereof, and in that the microchannel comprises at least one trough, extending at least partially in the direction of flow of the first fluid or an area for trapping drops or bubbles, said area or the trough having a height that is greater than the height of the microchannel, such that at least some of the drops or bubbles of the second fluid in the microchannel are drawn and guided into the trough or into the trapping area.