The present disclosure is directed to a microfluidic die that includes a plurality of heaters above a substrate, a plurality of chambers and nozzles above the heaters, a plurality of first contacts coupled to the heaters, and a plurality of second contacts coupled to the heaters. The plurality of second contacts are coupled to each other and coupled to ground. The die includes a plurality of contact pads, a first signal line coupled to the plurality of second contacts and to a first one of the plurality of contact pads, and a plurality of second signal lines, each second signal line being coupled to one of the plurality of first contacts, groups of the second signal lines being coupled together to drive a group of the plurality of heaters with a single signal, each group of the second signal lines being coupled to a remaining one of the plurality of contact pads.

A fluid control device includes a piezoelectric pump, an inhaler, and a valve. The piezoelectric pump has a gas suction hole and a gas discharge hole. The inhaler has a container, an inhalation port, and a connection hole. The valve has a first ventilation hole, a second ventilation hole, a third ventilation hole, a first valve housing, a second valve housing, and a valve body. The first ventilation hole of the valve is connected to the connection hole of the inhaler. The second ventilation hole of the valve is connected to the suction hole of the piezoelectric pump. The third ventilation hole of the valve is opened to the atmosphere. The valve body is held between the first valve housing and the second valve housing, and configures a first region and a second region.

Systems, methods, and devices are disclosed for producing substantially uniform droplets. The system includes a fluid reservoir vessel defining a fluid reservoir, a separation membrane at one end of the fluid reservoir, at least one capillary channel at an opposite end of the fluid reservoir, a solution dispenser, and a piezo actuator in contact with a separation membrane. The separation membrane has a thickness greater than about 0.2 mm, and the solution dispenser maintains the fluid reservoir filled with fluid such that the fluid simultaneously contacts the separation membrane and the capillary channel. The solution dispenser maintains the fluid reservoir under pressure to create a fluid stream exiting the capillary. The piezo actuator is in contact with the separation membrane on a side opposite that in contact with the fluid, and the piezo actuator transfers a pressure wave through the fluid in the fluid reservoir to break up the fluid stream into uniform droplets.

An apparatus for dispensing compounds bearing scent in which one or more scent dispensing units contain each one scent bearing compound and is activated mechanically by an electromechanical activator. A user handled device contains a controller, a memory and a communications device. Resident hardware includes a resident channel for communicating with the user handled device and a controlled driver for controlling the scent dispenser mechanically. A wireless peer to peer communications system carries out the communications between the user device and the resident hardware. The user can input parameter for controlling the dispensing unit through a user device interface. A controller in the resident hardware implements a dispenser activation scheme, mechanically expressed by the activator of the scent dispensing unit.

A smoking device for aerosol-generation may comprise a device housing, a surface acoustic wave-atomizer (SAW-atomizer), a supply element, and a control system. The device housing may include a storage portion for an aerosol-forming substrate. The SAW-atomizer may include an atomization region, a first transducer, and/or a second transducer. The first transducer is configured to generate first surface acoustic waves that propagate along a surface of the SAW-atomizer. The supply element is arranged to supply the aerosol-forming substrate from the storage portion to the atomization region of the SAW-atomizer. The control system is configured to operate the SAW-atomizer to atomize the aerosol-forming substrate in the atomization region to generate an aerosol. A cartridge for such a smoking device and a method for generating an aerosol in a smoking system are also provided.

Apparatuses, systems, and methods are disclosed for a complete diffuser and a two-part decorative diffuser cover. The two-part decorative diffuser cover has an inner cavity shaped to receive the complete diffuser. One part of the two-part decorative diffuser cover is removable couple to the complete diffuser. The two-part decorative diffuser cover forms a single decorative structure when both parts of the two-part decorative diffuser cover are joined together.

A nebulizing driving apparatus is used to drive a piezoelectric material of a nebulizing module. The nebulizing driving apparatus includes a driving circuit, a control circuit and a feedback circuit. The feedback circuit detects an electrical data fed back from the piezoelectric material and sends the electrical data to the control circuit when the control circuit is configured to control the driving circuit to drive the piezoelectric material with a driving frequency. According to the electrical data, the control circuit is configured to control the driving circuit to drive the piezoelectric material with a working frequency.

The present application relates to a construction member 3D printing spray bead with vibrating rod which includes a frame, a receiving hopper, a vibrating rod and a lifting device; the Vibrating'rod includes a cylindrical vibrating body and cable wires connected to the cylindrical vibrating body. The lifting device includes a set of guide wheels, clamp, wire rope, electrical winding drum. Wherein, the cylindrical vibrating body is located within the receiving hopper. The cable wire which is connected to the cylindrical vibrating body extends outside the receiving hopper via the space between the wheels of the set of guide wheels arranged above the receiving hopper. One side of the clamp clamps the cable wire that is outwardly extended, while the other side of the clamp clamps the wire rope. The wire rope is wrapped around the electrical winding drum.

A system and method for producing a fragrance. The system may include body having a plurality of chambers defined therein. Each chamber may include a fragrance accord. A circuit and a plurality of emitters may be positioned within the body. The emitters may be connected to and controlled by the circuit, and each of the emitters may be positioned adjacent to a corresponding one of the chambers and control ejection of the fragrance accord therein.

Nebulizer systems to generate a mist of micro-droplets of a liquid for the purpose of freshening the atmosphere. Nebulizer systems having a small size that can be mounted on a sales stall to humidify and freshen fresh products displayed for sale, or in a vehicle to humidify and freshen the air and make it pleasant to breathe.