Abstract:
Amicrofluidic device and method for fabrication includes a microfluidic channel that has a closed portion, which comprises: a liquid pathway formed by a wetting area; and an anti- wetting area extending along and contiguously with the liquid pathway. The anti-wetting area is configured so as to provide a vent to evacuate gas along the anti-wetting area.
Abstract:
A microfluidic cartridge, configured to facilitate processing and detection of nucleic acids, comprising: a top layer comprising a set of cartridge-aligning indentations, a set of sample port-reagent port pairs, a shared fluid port, a vent region, a heating region, and a set of Detection chambers; an intermediate substrate, coupled to the top layer comprising a waste chamber; an elastomeric layer, partially situated on the intermediate substrate; and a set of fluidic pathways, each formed by at least a portion of the top layer and a portion of the elastomeric layer.
Abstract:
Eine Vorrichtung zum Dosieren von Flüssigkeiten in einen gasgefüllten Raum umfasst: eine Pumpe 1; eine Dosieröffnung 2 zum Einbringen der Flüssigkeit in den gasgefüllten Raum, eine Leitung 3, welche eine Druckseite der Pumpe mit der Dosieröffnung verbindet, einen elastischen Flüssigkeitsspeicher 4; wobei ferner die Leitung ein Absperrventil 5 zwischen der Pumpe 1 und der Dosieröffnung 2 aufweist, wobei der elastische Flüssigkeitsspeicher 4 zwischen der Pumpe und dem Absperrventil 5 angeordnet ist, und die Vorrichtung einen ersten Betriebszustand aufweist, in dem die Pumpe bei geschlossenem Absperrventil läuft, um in dem elastischen Flüssigkeitsspeicher eine Flüssigkeitsmenge unter Druck zu speichern.
Abstract:
This invention relates to plunger operated liquid dispensers, such as hand held pipettors, which are used to portion liquids. Specifically the invention relates to a reliable removal of a liquid from the liquid dispenser. According to the invention the plunger of the liquid dispenser is arranged into a speeded up movement while removing the liquid. This change in speed is preferably sudden.
Abstract:
An apparatus for dispensing droplets comprises a dispensing tip (2, 190, 210) with an orifice (4) having a cross sectional area in the range of 0.00002 mm2 to 0.03 mm2. An actuator assembly (13-15, 50, 80) comprising an actuator element engages with and disengage from the tip and, when engaged, couples acoustic energy to liquid in the tip to expel the liquid through the orifice as a droplet. The actuator assembly includes one or more piezo elements, which may be in the form of piezo stacks. In some embodiments, the actuator assembly comprises a plurality of jaws (51, 52, 61) adapted to move to engage with the dispensing tip for dispensing. This allows side loading of the tip (180) followed by movement of the actuator assembly (153) to engage the tip (180).
Abstract:
A fluid handling device and a method for implementing the fluid handling device is provided, wherein the fluid handling device includes a pressure control device configurable to generate at least one of a positive pressure and a negative pressure; and a flow control device having a flow control device output, wherein the flow control device is configurably associated with the pressure control device such that at least one of the positive pressure and the negative pressure is in flow communication with the flow control device output.
Abstract:
Systems and methods for delivering fluid to a microfluidic device is provided. The system includes a multi-well plate having a plurality of wells and an inlet tube having a first end being in communication with the one or more wells of the multi-well plate and a second end being in communication with a microfluidic device. The first end of the inlet tube is moveable between the plurality of wells of the multi-well plate to deliver fluid to the microfluidic device from the plurality of wells of the multi-well plate.
Abstract:
Described here is a composition comprising amphiphilic silica nanoparticles, wherein the silica nanoparticles are partially fluorinated. Also described here is a method for droplet-based assay, comprising dispersing at least one aqueous droplet in a continuous fluorous phase in a microfluidic channel, wherein at least one amphiphilic silica nanoparticle is absorbed to the interface of the continuous fluorous phase and the aqueous droplet, and wherein the silica nanoparticle is partially fluorinated. Further described here is a method for droplet-based assay, comprising dispersing at least one aqueous phase droplet in a continuous fluorous phase in a microfluidic channel, wherein the continuous fluorous phase comprises at least one partially fluorinated amphiphilic particle adsorbed to an interface of the continuous fluorous phase and the aqueous phase droplet, and wherein the aqueous phase droplet comprises at least one hydrophilic polymer adsorbed to the amphiphilic particle at the interface.