10 results about "Electrohydrodynamics" patented technology

The present disclosure relates to a process for electrostatic spray drying of a living microorganism with a specific surface charge. using electrostatic charge provided by a high voltage source, wherein said electrostatic charge is the same as the surface charge of the microorganism.

The invention discloses a device and a method for preparing tiny liquid drops based on electrohydrodynamics. The micro-droplet preparation device comprises a droplet generator, a pressure control system, a vacuum system, a temperature control system, a high-voltage power supply, an electrode substrate, a droplet measuring system and a droplet collector. A liquid material is stored in the liquid storage cavity, a temperature control system is installed outside the cavity, and the top of the cavity is connected with a pressure control system through a gas pipeline. The pressure control system is adjusted to inject argon into the liquid drop generator, so that the liquid forms a stable meniscus at the nozzle opening. When direct-current high pressure is applied between the electrode substrate and the nozzle, the bottom of the sprayed fluid can be broken into liquid drops with smaller diameters; a liquid drop generator with a PZT piezoelectric assembly is adopted, pulse voltage is applied, and tiny liquid drops can also be prepared by means of vibration of a PZT piezoelectric driver. By adopting the device provided by the utility model, a nozzle with the diameter range of 50-350 microns can be used, and micro-droplets with the diameter of 13 microns, which are 3-26 times smaller than the diameter of the nozzle, can be prepared.

The present application relates to a kind of flexible foldable bionic wing, specifically to a kind of flexible foldable bionic wing based on electrohydrodynamics pump drive, the present application belongs to bionic technology coupling field, the purpose of the present application is to solve the problem that existing bionic technology relies on micro motor and complex mechanical transmission mechanism to realize wing unfolding and retraction, system structure is complex and manufacturing cost is higher, it constitutes the obstacle to its in harsh space constraint or light weight requirement higher scene, folding bionic wing is installed on pipeline integrated module, pipeline integrated module is connected with the pipeline of folding bionic wing, liquid storage device is connected with electrohydrodynamic pump and provides dielectric liquid, power supply equipment is connected with electrohydrodynamic pump and provides voltage, electrohydrodynamic pump is connected with pipeline integrated module and controls dielectric liquid to flow in the pipeline integrated module and the pipeline of folding bionic wing, dielectric liquid flows in the pipeline of folding bionic wing and controls the folding and unfolding of folding bionic wing.

The present invention relates to the fields of microfluidics and electrofluidic technology, and in particular to a soft crawling caterpillar robot driven by an electrohydrodynamic pump. The robot comprises an electrohydrodynamic soft material pump, an artificial muscle, a liquid reservoir, and auxiliary legs. The electrohydrodynamic pump comprises an upper cover plate, a flow channel layer, an electrode layer, and a base layer. The upper cover plate is provided with a flow channel inlet and a flow channel outlet, which are sealed and connected to the liquid reservoir and the artificial muscle, respectively. The flow channel layer, the artificial muscle, and the liquid reservoir are filled with dielectric liquid. The present invention is a soft robot driven by an electrohydrodynamic soft material pump. Electrohydrodynamics is used to achieve a dielectric liquid pumping effect, pumping the dielectric liquid from the liquid reservoir to the artificial muscle. By utilizing the expansion and bending characteristics of the artificial muscle, the robot can achieve an overall forward crawling motion similar to the crawling characteristics of a "caterpillar." At the same time, the robot is flexible and adaptable, and has higher reliability in harsh environments.

The application discloses a kind of based on electrohydrodynamics drive variable integration unmanned plane flexible actuator system.System includes unmanned plane, pedestal, is equipped with dielectric liquid liquid storage cylinder and several drive variable integration flexible actuators, pedestal is horizontally installed in the center just below unmanned plane, liquid storage cylinder is installed on pedestal, each drive variable integration flexible actuator is vertically arranged in the circumferential direction of pedestal and is uniformly spaced below pedestal, each drive variable integration flexible actuator is electrically connected unmanned plane and is communicated liquid storage cylinder, by double-side electro-hydraulic combined drive each drive variable integration flexible actuator generates strain difference to realize bidirectional bending, to realize grabbing target object or buffering unmanned plane landing in turn.The application system structure is compact, drive response is fast, and has grabbing and landing buffering function, significantly improves the grabbing capacity and environmental adaptability of unmanned plane.

The invention discloses an electrofluid-driven flexible micro tactile feedback device and a driving method. Comprising a silica gel film, an electrode structure, a first flexible silica gel shell and a second flexible silica gel shell, the first flexible silica gel shell is arranged in the middle of the electrode structure, and the silica gel film is fixedly connected with the second flexible silica gel shell through the electrode structure; the electrode structure and the first flexible silica gel shell are each provided with a plurality of through holes which are arranged in an array mode and communicate with one another, and each through hole is filled with dielectric liquid. And after the electrode structure is connected with an external power supply and is electrified, the dielectric liquid in each through hole flows to the silica gel film, so that the silica gel film at the corresponding position protrudes towards one end far away from the electrode structure to form a touch salient point. The micro tactile feedback device has the advantages of being low in noise, low in power consumption, light in weight and the like due to the fact that an electric fluid driving mode is adopted. Meanwhile, due to the full-flexible design, man-machine interaction is safer.

The utility model discloses a point gum system based on the principle of hydrodynamics, including power module, air pressure control module and point gum mechanism. Power module inserts commercial power and supplies power to air pressure control module voltage stabilization, and point gum mechanism contains Z axial first mounting plate, and its top is equipped with electrical control part, still is equipped with elevating system, and elevating system drives second mounting plate to do Z direction movement through motor, screw rod etc, and second mounting plate bears point gum subassembly, and the point gum head of point gum subassembly is detachable and connects power supply anode, and the point gum platform mesa has negative pressure hole and connects power supply cathode, and both form electric field and realize point gum. Air pressure control module adopts IO system pressure control, and CCD camera module is used for positioning monitoring. The system solves the problem of slow speed, poor stability and low efficiency of traditional point gum in the narrow frame process of display screen module, realizes fast, stable and efficient point gum.

This invention proposes a gripper based on electrohydrodynamics and electrostatic hydraulic drive, comprising at least one finger unit and a palm unit connected to the finger unit. The finger unit includes a fingertip module, a connecting portion, and a bidirectional jet module connected in sequence. The palm unit includes a palm base and a palm suction module. The proximal end of the bidirectional jet module is connected to the palm base. The fingertip module has its backside connected to the connecting portion via a joint capsule, its palm side contacting the distal end of the connecting portion, and its palm side hinged to the connecting portion. The bidirectional jet module is used to drive the dielectric fluid to flow directionally between the finger unit and the palm unit under the action of an electric field. The palm suction module, together with the palm base, forms a closed area for containing the dielectric fluid, and its volume can be changed. This invention has the advantages of compact structure and high integration.

The present invention relates to an inkjet print head having a plurality of nozzles and ejecting a solution by electrohydrodynamics, characterized by comprising: a first electrode formed for each of the plurality of nozzles and to which a voltage for ejecting the solution by electrohydrodynamics is applied; a first voltage controller for applying the voltage to the first electrode; and a second electrode disposed apart between the first electrodes formed on the respective nozzles and grounded, and for preventing interference of electric fields between the respective nozzles.

An electrohydrodynamic tweezer device and method of separating nano-sized particles in a sample. The electrohydrodynamic tweezer device includes a first electrode, a second electrode including a gold film and an array of microholes formed therein, a fluidic chamber between the first electrode and the second electrode, and a voltage source configured to generate an electric field between the first electrode and the second electrode, wherein the array of microholes results in an array of electrohydrodynamic potentials to trap nanoscale-sized particles on the gold film.