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WO/2005/060393A2 |
Using basic physical arguments, a design and method for the fabrication of microfluidic valves using multilayer soft lithography is presented. Embodiments of valves in accordance with the present invention feature elastomer membrane port...
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WO/2005/052420A1 |
A device is disclosed for controlling a variable displacement compressor. The device comprises a microvalve operated control valve. A microvalve device for controlling fluid flow and a micro spool valve for use as a microvalve are also d...
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WO/2005/052371A1 |
The invention relates to a pump comprising: a cavity formed inside an insulating substrate, the upper part of the substrate being situated near the cavity comprising an edge; a conductive layer covering the inside of the cavity up to the...
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WO/2005/042984A2 |
A method and system for monitoring fluid flow rate through pipelines or similar conduits for delivering natural gas and crude oil and other similar liquid or gas energy resources (16). The flow rate monitor relies on the measurement of a...
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WO/2005/042169A1 |
A fluidic oscillator (2) suitable for use at colder temperatures for utilizing a pressurized liquid to generate a uniform spatial distribution of droplets has (a) an inlet (28) for the pressurized liquid, (b) a set of three power nozzles...
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WO/2005/036182A1 |
A method in which a capillary chip comprising a layer of a polymer composition and having a capillary formed in the surface or an inner part of the polymer composition layer is used to pass a fluid through the capillary. The capillary ha...
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WO/2005/033561A2 |
A method for achieving high flow in valves with small actuation distance is described. A detailed description for a silicon microvalve is provided. An algorithm is described for designing optimized valves.
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WO/2005/032707A1 |
A method of controlling the fluid flow in a microchannel, the microchannel at least a region of its surface having a hydrophilization part constituted of a substance capable of lowering a water contact angle upon being irradiated with li...
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WO/2005/023339A1 |
The present invention relates to apparatus for delivering a controlled or restricted flow of liquid and limiting bubble fragmentation at the inlet. This is achieved in flow restrictor with a flow channel having over most of its length a ...
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WO/2005/014172A1 |
The invention provides a microfluidic valve comprising a first body for containing fluid having a fluid inlet and a fluid outlet and a plurality of electrodes, and arranged to contain, in use, a second body held within fluid contained in...
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WO/2005/007278A1 |
The invention essentially concerns an electrically-driven valve consisting of electroactive polymers and more precisely an electrically-driven fluidic valve separating two volumetric spaces comprising: at least one microporous membrane (...
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WO/2005/007056A2 |
A system and method is disclosed for the provision of assisted breathing by the delivery of a controlled pressurized airflow to the pulmonary airway of a user with breathing disorders. The system comprises a source of compressed respirat...
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WO/2005/001321A2 |
A system for conveying fluid through a conduit that creates a strong laminar flow of the material surrounded by a boundary layer flow of the same or a different flowable material, such that long transport distances through dramatic eleva...
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WO2003055590A9 |
A substrate having a surface with reversibly switchable properties. The surface comprises a nanolayer of a material that switches from a first conformation stateto a second conformation state when an external stimulus is applied. When th...
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WO/2004/113735A1 |
The invention relates to an electrically-opened micro fluid-valve. The inventive valve comprises: at least one planar support (12); at least one afferent microchannel (14); at least one efferent microchannel (16), said microchannels bein...
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WO/2004/109163A2 |
The present invention discloses a microvalve for providing pneumatic -flow regulation suitable for use in microsystem applications that are operable using highly efficient actuation means for flow obstruction while being space efficient ...
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WO/2004/106792A1 |
A fluid flow control valve, especially for severe service, e.g. gas and oil power application, comprises a plurality of vortex chambers (9) through each of which fluid flows in substantially vortex fashion between an inlet channel (8) an...
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WO/2004/104228A1 |
The use of microfluidic structures enables high throughput screening of protein crystallization. In one embodiment, an integrated combinatoric mixing chip allows for precise metering of reagents to rapidly create a large number of potent...
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WO/2004/104555A2 |
Novel fluid logic devices are disclosed. Certain examples of the fluid logic devices include two or more fluid logic gates that are each operative to select and/or directy analytes in a sample into one or more fluid flow channels in comm...
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WO/2004/094994A2 |
Microfluidic devices provide substances to a mass spectrometer. The microfluidic devices include first and second surfaces, at least one microchannel formed by the surfaces, and an outlet at an edge of the surfaces. Some embodiments also...
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WO/2004/088148A1 |
A fluidic device comprising a housing having an inlet (10) and an outlet (12) defining a fluid flow path (14) therebetween. A channel (16) is provided within the housing, which channel (16) is filled with a material (18), such as wax, wh...
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WO/2004/085852A2 |
The invention relates to a control valve (12) comprising a valve housing (13) provided with two inflow openings (6, 7), one outflow opening (8), and an inner chamber (14) that can be filled with a pressurised medium and contains a switch...
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WO/2004/081390A1 |
A normally closed microvalve comprises a fluid inlet, a fluid outlet (332), a displaceable closure element (368, 370), which rests against a sealing lip when the microvalve is closed so that the fluid inlet is fluidically separated from ...
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WO/2004/079241A1 |
A fluid delivery device is provided which comprises a microchannel device for cutting out a certain amount of a sample from a micorochannel by controlling a valve opening. The fluid delivery device has a valve (301) for controlling a flo...
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WO/2004/074829A1 |
A microfluidics system comprising:a channel having an inlet (32) and an outlet (38); a first membrane (31) positioned between the inlet (32) and outlet (38) and comprising an aperture having a radius within the range 0.1 to 50 µm, the i...
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WO/2004/074694A1 |
The invention relates to a flow circuit comprising at least one flow channel in which is located a flow control means, wherein the physical state of the flow control means is alterable by application of an external stimulus, such that in...
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WO/2004/061308A1 |
An exemplary device for microfluidic transport includes a valve membrane sheet (400), an inlet channel (140) and an outlet channel (150). The valve membrane sheet confines transport of fluid from the inlet channel to the outlet channel w...
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WO/2004/059177A1 |
The present invention describes a method for fabricating micro-devices comprising aluminumoxide structures without the need for an extra lithographical processing step. So, no extra mask is needed. It appears that under certain circumsta...
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WO/2004/059474A2 |
The disclosure pertains to a space-conserving integrated fluid delivery system which is particularly useful for gas distribution in semiconductor processing equipment. The present invention also pertains to an integrated fluid flow netwo...
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WO2002097865A9 |
A valve (10(1) or 10(2)) which has a structure with at least one opening (14(1) or 14(2)) and a member (16) which has a fixed static charge and also has a first position exposing the opening (14(1) or 14(2)) and a second position sealing...
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WO/2004/057198A1 |
A vortex valve assembly in which pressure within the vortex chamber is used to provide a switching function for automated opening of a gate (14) to increase the size of the outlet (6). The pressure in the volute is used to provide a mech...
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WO/2004/053370A1 |
A freeze-thaw valve is provided using a Peltier heat pump where the thermal short circuit path between a cooled thermal mass (106) is reduced or absent and the valve transition time is minimized. The freeze-thaw valve comprises a Peltier...
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WO/2004/047997A2 |
A fountain (50) comprises a supply of water under pressure, a primary fluidic diverter (10) having an input (12) for said supply, and first and second outputs (16a, b) diverging from said input. Two control ports (20a, b) are provided wi...
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WO/2004/048787A1 |
The invention concerns the technical field of micro-actuators used for mechanical, chemical, electrical or thermal functions in microsystems, for microelectronic applications such as chips, or biomedical functions such as microfluidics i...
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WO/2004/046563A1 |
The invention relates to a variable flow resistance element comprising a fluid inlet (20), a fluid outlet (22) and a closed fluid conduit (16) of a fixed length, which connects the fluid inlet (20) to the fluid outlet (22), allowing the ...
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WO/2004/042357A2 |
The movement and mixing of microdroplets through microchannels (B) is described employing silicon-based microscale devices, comprising microdroplet transport channels reaction regions, electrophoresis modules (D), and radiation detectors...
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WO/2004/040392A1 |
A microsystem capable of setting an appropriate amount of stimulus being imparted in order to control liquid flow in a channel. The microsystem comprises microheaters (5b, 5c) for imparting a stimulus to liquid flowing through liquid cha...
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WO/2004/036059A1 |
A valve unit and a fluid control chip include: a valve chamber (8) having an inlet and an outlet for a fluid; a valve element (3) accommodated in the valve chamber; a piezoelectric element (4) for applying vibrations to the valve chamber...
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WO/2004/034028A2 |
A microfluidic system includes one or more functional units (30, 32, 34, 36, 300, 302, 304, 306, 400) or microfluidic chips, configured to perform constituent steps in a process and interconnected to form the system. A multi-layer microf...
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WO/2004/028955A2 |
High-density microfluidic chips contain plumbing networks with thousands of micromechanical valves and hundreds of individually addressable chambers. These fluidic devices are analogous to electronic integrated circuits fabricated using ...
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WO/2004/025128A1 |
A liquid delivery device comprises a flow channel (10) for flowing a liquid, at least two pressure-generating means (2,3) forgenerating pressures provided in the flow channel, and a variable member (1) placed between the pressure-generat...
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WO/2004/018908A2 |
A fluid valve device formed of MEMS devices includes a generally-planar semiconductor substrate (102) having one or more apertures (100/210) to provide passages for fluids, gases, or the like. Movable gate elements (104/214) alternately ...
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WO/2004/016948A1 |
The invention makes available methods and devices for handling liquids in micro channel systems by means of bubbles generated by a movable light beam. In particular the devices relate to pumps, valves, mixers and thermal reactors in micr...
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WO/2004/011143A2 |
A microfluidic device that includes a micro ball valve is provided. The microball valve is capable of preventing or interrupting fluid flow through the microfluidic device. The microfluidic device can include a substrate layer, and a mic...
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WO/2004/007080A2 |
Liquid flow devices, particularly microfluidic devices, containing solid porous materials. Flow in the devices can be pressure-driven flow and/or electroosmotic flow. The porous materials are preferably pre-shaped, for example divided fr...
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WO/2004/000616A1 |
A fluidic insert (18) that receives fluid under pressure from a fluid inlet tube (14) and generates a specified spatial distribution of the fluid exiting the insert includes: (1) a body member (22) having top, bottom, front and rear oute...
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WO/2004/001261A1 |
An electrostatically actuated valve that is relatively small, has relatively low fabrication costs, and consumes relatively low voltage and/or power. Normally closed, normally open, three (or more) way valves, and other configurations ar...
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WO/2004/000449A1 |
The invention relates to hydraulic device (1) produced from one or several components, for example from a support (12) comprising: an operative cavity (3), at least two ducts (41, 42), for example an inlet (41) and outlet (42) for a liqu...
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WO/2003/098218A1 |
Methods and apparatus are presented for controlling fluid flow with pressure gradient fluid control. Passive fluid flow barriers may be used to act as valves, thereby allowing the flow of fluids through flow paths to be regulated so as t...
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WO/2003/098053A1 |
A valve system (10) controls the fluid flow between an inlet (12) and an outlet (14). The system (10) splits the flow into two parallel flow ducts (15, 16) and recombines the flows through opposed tangential inlets (18) and (19) of a flu...
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