The present invention generally relates to the production of fluidic droplets. Certain aspects of the invention are generally directed to systems and methods for creating droplets by flowing a fluid from a first channel to a second channel through a plurality of side channels. The fluid exiting the side channels into the second channel may form a plurality of droplets, and in some embodiments, at very high droplet production rates. In addition, in some aspects, double or higher-order multiple emulsions may also be formed. In some embodiments, this may be achieved by forming multiple emulsions through a direct, synchronized production method and/or through the formation of a single emulsion that is collected and re-injected into a second microfluidic device to form double emulsions.

To provide a nanobubble generating nozzle that is compact and capable of generating nanobubbles with high efficiency. The problem is solved by a nanobubble generating nozzle and a nanobubble generator including this nanobubble generating nozzle. The nanobubble generating nozzle includes an introduction part for introducing a mixed fluid of a liquid and a gas into an interior thereof, a jetting part for feeding out the mixed fluid containing nanobubbles of the gas, and a nanobubble generating structure part for generating nanobubbles of the gas, between the introduction part and the jetting part. The nanobubble generating structure part includes a plurality of flow paths having different cross-sectional areas through which the mixed fluid of the liquid and the gas is passed, in an axial direction of the nanobubble generating nozzle.

A system and method of the purification of drinking water, ethanol and alcohol beverages is based on the action of hydrodynamic cavitation processing of microbiological and chemical contaminants, micro particles and colloidal particles. The fluid flow moves at a high rate through a multi-stage cavitation device and filtration module to generate hydrodynamic cavitation features in the fluid flow. The cavitation features generate changes in the velocity, pressure, temperature, chemical composition and physical properties of the liquid. The cavitation features also prevent the deposition of contaminants upon and remove contaminants from the surface of the filter module, reduce the load on the filter elements and increase the life of the filter module.

An apparatus for enhancing phase contact and chemical reactions is provided. The apparatus comprises at least one high-turbulence mixing stage and at least one high-shear-stress and high-cavitation stage. The stages are adapted to cause an increase in relative sliding speeds of phases involved in a multiphase flow passing through the stages. The high-shear-stress and high-cavitation stage comprises a rotor having radial teeth housed in a cavitation chamber surrounded by a stator having radial teeth. The facing surfaces of the radial teeth have a parabolic profile in circumferential direction. For each tooth, the parabolic profile lies along a curve of a parabola of which a vertex is arranged at a rear edge of the tooth, with respect to a direction of rotation of the rotor, and along a radius extending from the rear edge to a center of the rotor. The focus of the parabola is also located on the radius.

The present invention relates to a microfluidic device and method for providing emulsion droplets. The device comprising: a microfluidic section comprising one or more microfluidic units; and a well section comprising one or more groups of wells comprising one group of wells for each microfluidic unit; the well section and the microfluidic section forming a fixedly connected unit such that each group of wells forms a fixedly connected unit with a respective corresponding microfluidic unit, each microfluidic unit comprising a fluid conduit network comprising: a plurality of supply conduits comprising a secondary supply conduit and a primary supply conduit comprising a capillary structure having a volume of at least 2 L; a transfer conduit; and a first fluid junction providing fluid communication between the primary supply conduit, the secondary supply conduit, and the transfer conduit; each group of wells comprising a plurality of wells comprising a collection well and one or more supply wells comprising a primary supply well, the collection well being in fluid communication with the transfer conduit of the corresponding microfluidic unit, the primary supply well being in fluid communication with the primary supply conduit and the secondary supply conduit of the corresponding microfluidic unit.

An extrusion equipment adapted for supercritical foaming and mixing of a raw material includes a mixing unit, an injection unit for injection of supercritical fluid into the mixing unit, and an extrusion unit for extrusion of the raw material. The mixing unit includes a tube for input of the raw material, and a propelling screw rod and an auxiliary screw rod that are disposed side by side in the tube and that cooperatively compress and propel the raw material. The auxiliary screw rod rotates at a speed at least twice that of the propelling screw rod and in a direction opposite to that of the propelling screw rod.

A multimodal micromixer obstacle for intensification of mixing and performing the reaction in a continuous manner is disclosed herein. The micromixer 100 comprises of plurality of inlets, an outlet and a plurality of channels. The end channelsof the channels, have pluralityof converging sections having width, to depth ratio ranging 1:1 to 20:1. The intermediate channels have at least, one obstacle having non-circular shape. Each converging section is incomplete ellipse, prolate or oblate shaped having, angle of curvature in the range of 90 to 270. Axes of the inlets are coplanar and perpendicular to the channels. All the components of the micromixer are coplanar.

The invention relates to mixer device (52) for mixing and an additive to the exhaust gas flow from a combustion engine. The mixer device has an additive injection means (1) and a conduit (2) with an inlet opening and an outlet opening. The conduit (2) has a widened portion (5) between the inlet opening and the outlet opening. The additive injection means (1) is located in the widened portion (5) for injecting the additive into the widened portion. The widened portion (5) at the location of the additive injection means (1) defines an injection width (W) being the distance from the additive injection means (1) to the opposite part (6) of the conduit (2). The injection width (W) is larger than the maximum width (W.sub.1) of the conduit (2) adjacent the inlet opening. According to the invention, the cross sectional area of the conduit (2) at the location of the additive injection means (1) is smaller than 1.2 times the cross sectional area of the conduit (2) adjacent the inlet opening. The invention also relates to a use of the mixer device and to a method for mixing an additive to an exhaust gas from a combustion engine.

There is described a system for growing a microorganism in liquid culture, the system comprising: a driving apparatus configured to house and oscillate a microfluidic cartridge; and a microfluidic cartridge comprising at least one incubation chamber, such that when the system is in use, the incubation chamber may be oscillated back and forth along an oscillation path using a preferred oscillation protocol. There is also described a method of growing a microorganism in liquid culture, the method comprising disposing a microorganism and suitable growth medium into an incubation chamber; and mixing the microorganism and growth medium by oscillating the incubation chamber back and forth along an oscillation path using a preferred oscillation protocol. There is also described a microfluidic cartridge that may be used to grow microorganisms using the system and methods described above.

Provided is a fine bubble supply device and a fine bubble analyzing system capable of more stably supplying fine bubbles unstable in a liquid.

A fine bubble generating device generates fine bubbles. A retention vessel stores a liquid therein, and an inlet pipe and an outlet pipe of the fine bubbles are connected to the retention vessel. The fine bubbles generated from the fine bubble generating device are introduced into the liquid in the retention vessel through the inlet pipe to be retained in the liquid. The fine bubbles retained in the liquid are led out to a supply destination (fine bubble characteristic evaluation device) through the outlet pipe.