摘要:
Provided is a microfluidic device to more easily and mechanical ly operate a valve for controlling a fluid flow, which comprises: a platform having a plurality of chambers; at least one flow channel which connects between the chambers; and a valve which opens or closes the flow channel, wherein the valve includes a blocking member which selectively blocks the flow channel and a pressing member installed in the blocking member to move the blocking member, and the pressing member has a structure which presses and moves the blocking member by the linear reciprocat ing mot ion in the same direction as the direction of an external force, and the valve further includes a driving unit which reversibly controls the opening and closing of the flow channel caused by the blocking member by fixing the pressing member to the position of the moved pressing member or returning to the original position.
摘要:
Plastic microfluidic structures having a substantially rigid diaphragm that actuates between a relaxed state wherein the diaphragm sits against the surface of a substrate and an actuated state wherein the diaphragm is moved away from the substrate. As will be seen from the following description, the microfluidic structures formed with this diaphragm provide easy to manufacture and robust systems, as well readily made components such as valves and pumps.
摘要:
A micro- fluidic system (1) comprising a micro-fluidic channel (2), which has a wall (7) provided with a hole (9), within which a closing portion (16) of a closing element (13) extends; when the closing portion (16) is arranged within the micro-fluidic channel (2), the passage of the liquid along the channel (2) is interrupted; by deforming the closing element (13) by suction the closing portion (16) may be lifted and therefore allow the passage of liquid along the micro-fluidic channel (2).
摘要:
A solvent-resistant microfluidio device (MD) is fabricated from a functionalized, photo-curable perfluoropolyether (PFPE). In one embodiment, a polymeric precursor (PP), comprising PFPE, is disposed on a patterned surface (PS) of a substrate (S), having raised protrusions (P). Ultraviolet light (UV) is applied to yield a patterned layer (PL) of photo-cured PFPE having recesses (R) comprising at least one channel (CH). Patterned layer (PL) is removed from patterned surface (PS) of substrate (S) to yield microfluidic device (MD).
摘要:
A microfluidic valve structure (10 or 10') is provided. The valve structure (10) includes a valve body (15) having a fluid flow passage (22) formed therein for allowing fluid to flow therethrough. A valve boss (24) is configured to move relative to a valve seat (26) to open and close the fluid flow passage. A plurality of flexible support arms (30A-30D) extend between a wall (20) of the valve body (15) and the valve boss (24) for supporting the valve boss (24) relative to the valve body (15) such that the valve boss (24) engages and disengages the valve seat (26) to close and open the passage.
摘要:
A fluidic control system includes featured layers. The featured layers include two or more features which collectively form at least one functional component.
摘要:
Die Erfindung betrifft eine Ventilvorrichtung für ein Mikrofluidsystem, das ein erstes und ein zweites Fluidreservoir, eine Flusskammer, eine Fluidkanalanordnung und eine Fördereinrichtung umfasst, wobei das erste Fluidreservoir über die Flusskammer mit dem zweiten Fluidreservoir durch die Fluidkanalanordnung fluidisch verbunden ist, wobei die Ventilvorrichtung aus einem ersten Zustand in einen zweiten Zustand bringbar ist, so dass im ersten Zustand ein Fluid mittels der Fördereinrichtung vom ersten Fluidreservoir durch die Flusskammer mit einer vorherbestimmten Strömungsrichtung in das zweite Fluidreservoir förderbar ist und im zweiten Zustand ein Fluid mittels der Fördereinrichtung vom zweiten Fluidreservoir durch die Flusskammer mit der vorherbestimmten Strömungsrichtung in das erste Fluidreservoir förderbar ist.
摘要:
Mechanical actuation of valves in flexible fluidic structures allows for the regulation of fluid flow. In accordance with the disclosure herein, a fluidic structure is provided wherein mechanical actuation is conferred using a pin to actuate a flexible layer to occlude fluid flow in a fluid channel.
摘要:
A container (1 ) for a liquid reagent (9), wherein the container has an outer wall (3) and an internal piercing member (6), such that, upon application of pressure to the outer wall of the container, the internal piercing member punctures the container from the inside, thereby liberating the liquid contained therein Such a container is configured to store the liquid for periods between 6 to 18 months with minimal loss of the liquid inside, other than if the container is ruptured Such a container is also configured to require a particular force to be applied to the outer wall to cause the internal piercing member to puncture the container, such a force being greater than that ordinarily experienced by the container during routine storage, transport, or handling The container is preferably adapted for use with a microfluidic cartridge.