17 results about "Taylor cone" patented technology

The invention provides a laser-electric coupling Taylor cone bionic electrospinning process method, a folded conductive metamaterial and application, the preparation method comprises the following steps: dissolving a carbon nanotube in N, N-dimethylformamide, stirring and carrying out ultrasonic treatment, then adding polymer powder, and continuously stirring to obtain a precursor solution; in the first stage, electrostatic spinning is carried out, meanwhile, a laser beam with the wavelength of 589-650 nm is focused on a rotating Taylor cone for electrostatic spinning, the treated spinning film is heated in air, heat preservation is carried out, then the temperature is reduced to the room temperature, and in the first stage, heating is carried out firstly, and then heat preservation is carried out; then raising the temperature in the second stage, keeping the temperature, and finally cooling to room temperature; in the coupled field spinning process, the synergistic effect of arrangement of the carbon nanotubes and the carbon nanofibers induced by photo-thermal response, local fluidity enhancement and an electric field jointly promotes axial dispersion and slidable in the fibers and formation of a self-adaptive network; and the folded conductive metamaterial capable of being folded for 10 million times is successfully prepared.

The invention belongs to the technical field of ink-jet printing, and particularly relates to a high-frequency jet printing method and system based on micro-droplet generation, and the method comprises the steps: applying a high-voltage high-frequency time-varying electric signal to a micro-nozzle assembly, and forming a high-frequency time-varying electric field between a nozzle outlet and a grounding substrate; electrical signal parameters are adjusted, an ink supply device outputs, Taylor cone / jet flow is generated at an outlet of a nozzle, and then the taylor cone / jet flow tail end is stably broken and broken to generate uniform micro-droplets; the distance between the outlet of the nozzle and the surface of the movable substrate is greater than the critical distance required by stable fracture and crushing of a Taylor cone or jet flow in air; the frequency of the high-voltage and high-frequency time-varying electric signal is an integral multiple of the inherent frequency of the Taylor cone or jet flow fracture into drops; the ink supply rate of the ink supply device meets the condition that the ink supply rate is matched with the parameters of the high-voltage and high-frequency time-varying electric signals, and stable fracture and breaking are ensured by inducing Taylor cone or jet flow resonance. The electro-fluid jetting frequency is improved, and meanwhile the characteristic frequency limitation is broken through.

The utility model discloses a focused ion beam microscope ion source, which comprises an installation frame, two ion source pins are fixedly connected on the installation frame through openings, one side of each ion source pin is fixedly connected with an emission part, one end among a plurality of emission parts is fixedly connected with a Taylor cone, and the other end among the emission parts is fixedly connected with a focusing lens. A sliding shaft is slidably inserted into the bottom of the mounting frame, a rotating disc is fixedly connected to the bottom end of the sliding shaft, a sealing cover is clamped to the outer side of the rotating disc, a storage pipe sleeves the bottom end of the sealing cover in a threaded mode, a heating wire sleeves the outer wall of the circumference of the storage pipe, a gallium source body is stored in the storage pipe, and a discharging port is formed in the bottom end of the storage pipe. The top end of the Taylor cone penetrates through the discharging opening and is inserted into the storage pipe. The storage tube is stably mounted through the sliding shaft and the sealing cover, so that the storage tube is prevented from falling off, and the stability of the ion source is improved.

The invention provides a miniaturized multi-electrode spray head structure and a control method, and relates to the technical field of electrohydrodynamic printing. By introducing a multi-electrode printing electrode group consisting of a focusing electrode, an accelerating electrode and a deflecting electrode, independent and fine regulation and control on formation, acceleration and deflection of ink droplets are realized. Constant voltage is applied to the focusing electrode, ink can be promoted to stably form a Taylor cone at an outlet of the nozzle, and the problem that the Taylor cone is formed unstably due to uneven electric field distribution of an existing single-electrode nozzle is solved. The accelerating electrode applies a preset pulse electric field, liquid at the tip of the Taylor cone can be stretched into jet flow and broken into submicron liquid drops, kinetic energy is provided for the liquid drops at the same time, and the submicron printing resolution is achieved. The deflection electrode applies a transverse electrostatic field, the spraying direction of the liquid drops can be independently changed, and the problems that an existing single-electrode sprayer is single in electric field control means, the deposition track of the liquid drops cannot be independently regulated and controlled, and consequently the flight track of the liquid drops is unstable and the positioning error is large are solved.

This utility model discloses an electro-inking dispensing nozzle with a multi-level electric field correction structure, including a glue cartridge, a support assembly, and a needle. The needle is connected to the glue cartridge via a Luer connector. A needle-shaped electrode is located on the central axis of the internal flow channel of the needle, and its surface may be plated with an insulating layer or left untreated. The surface of the needle is coated with a hydrophobic or non-stick coating, at least covering the end. One end of the locking assembly is connected to the support assembly, and the other end locks the needle. A connecting plate at its cavity opening has a through hole, with the glue outlet of the needle pointing towards the through hole. An electrode ring is fixed at the lower end of the connecting plate. The support assembly also has a sensor for detecting low liquid levels in the glue cartridge. During operation, the dispensing controller provides air pressure, and the power supply output voltage forms a converging electric field. Under the action of air pressure and electric field, the glue forms a Taylor cone jet, and the secondary annular electric field generated by the electrode ring corrects and straightens the droplets. This nozzle effectively solves the problems of poor stability, slow speed, and low efficiency of traditional dispensing in side-encapsulation processes, significantly improving dispensing accuracy and speed, and ensuring product quality.

This invention belongs to the field of precision electronic circuit manufacturing technology, and provides a method and device for repairing broken lines in micro-circuits based on electric field-driven micro / nano 3D printing. This invention employs electric field-driven jet deposition micro / nano 3D printing technology, with the printing nozzle connected to a high-voltage power supply. Utilizing the diameter reduction effect of the Taylor cone in electrostatic dynamics, it achieves the fabrication of micro / nano-scale feature structures. Under the action of electrostatic field tension (changing traditional pressure-driven to tension-driven), high-viscosity materials can be printed with high resolution, enabling the repair of conductive line defects below 1μm. It is particularly suitable for repairing three-dimensional / curved conductive lines and conductive line defects in large-size (meter-scale) substrates. This invention can achieve high-resolution, high-precision, low-cost, and efficient repair of micro-precision conductive line defects.

The present application relates to the technical field of sheet-shaped emitter made of non-metallic material, and provides an electro-wetting-based non-metallic sheet electrostatic spraying device and method thereof, the device comprising a liquid storage tank, a coarse inner diameter capillary, a connector and a sheet-shaped emitter made of non-metallic material. The liquid storage tank is used for storing and providing the liquid to be sprayed; the coarse inner diameter capillary is horizontally arranged and communicates with the liquid storage tank for conveying the liquid; the connector is arranged at the outlet end of the capillary; the emitter is arranged at the outlet end of the capillary and is spaced apart from the capillary, and the emitter is connected with the capillary through the connector. Under the action of an applied electric field, a liquid film is formed on the surface of the emitter, the liquid spreads along the surface of the emitter to the edge and forms a Taylor cone and a conical jet. The electro-wetting film formation on the outer surface of the emitter and the synergistic effect of geometric field strengthening enable the formation of a stable Taylor cone and a conical jet of a high-surface-tension liquid at the edge of the non-metallic emitter, thereby realizing low-voltage spraying and a wide and stable window.

The invention relates to a supercritical anti-solvent-electrostatic spray coupling system which comprises a supercritical anti-solvent generation module, a material mixing module and an electrostatic atomization module which are sequentially connected through a connecting pipeline, and a time-space synchronization control module which is in communication connection with the supercritical anti-solvent generation module and the electrostatic atomization module. The space-time synchronous control module cooperatively controls the oscillating electric field and the pressure of the supercritical anti-solvent, so that the electric field jet breaking of the material is realized by the electric field force, and the absolute value of the difference value between the Taylor cone forming time and the supercritical anti-solvent diffusion time is controlled within a set range, so that the supercritical anti-solvent permeates into liquid drops within a millisecond-level time scale; the invention discloses a preparation method of brain-targeted nano-particles, which comprises the following steps: dissolving a solvent in a solvent to trigger a sudden drop effect of polarity of the solvent, so that solute is instantaneously crystallized, and finally a nano-suspension with a particle size of less than 200nm and uniform particle size distribution (PDilt: 0.2) is formed, is suitable for preparing brain-targeted nano-particles with high drug loading capacity and small particle size, and can effectively cross a blood-brain barrier (BBB) to realize continuous and green production.

This invention provides a real-time monitoring system for an electrospinning device. The electrospinning device includes: N spinning units, N≥2; each spinning unit extends multiple spinning needles; the real-time monitoring system includes: an image acquisition device, which acquires images of the jets from the multiple spinning needles of one of the spinning units to obtain jet images, wherein the jets generated by the spinning needles include: straight jets and Taylor cone jets; and a control device, which is signal-connected to the image acquisition device and executes the following control instructions: Step C, for each of the M spinning needles extending from the spinning unit, the length of its straight jet is obtained from the jet image, and it is determined whether it is blocked based on its straight jet length, M≥2. This invention introduces computer software to judge the blockage of the spinning needles, replacing manual labor and reducing the time-consuming manual inspection of spinning needles required by current technology, thus preventing misjudgments by workers that could affect the quality of nanofiber membranes due to a lack of real-time monitoring.

The application provides a miniaturized multi-electrode nozzle structure and a control method, and relates to the technical field of electrohydrodynamic printing. By introducing a multi-electrode printing electrode group composed of a focusing electrode, an accelerating electrode and a deflection electrode, independent and fine regulation and control of ink droplet formation, acceleration and deflection are realized. The focusing electrode applies a constant voltage, which can promote the stable formation of a Taylor cone of ink at the nozzle outlet, overcoming the problem of unstable Taylor cone formation caused by uneven electric field distribution of the existing single-electrode nozzle. The accelerating electrode applies a preset pulsed electric field, which can stretch the liquid at the tip of the Taylor cone into a jet and break it into sub-micron droplets, while providing kinetic energy to the droplets, realizing sub-micron printing resolution. The deflection electrode applies a transverse electrostatic field, which can independently change the jetting direction of the droplets, solving the problem that the existing single-electrode nozzle has a single electric field control means and cannot independently regulate the droplet deposition trajectory, resulting in unstable droplet flight trajectory and large positioning error.

This invention relates to a high-speed electrospinning method based on an inorganic molecular chain solution. The method involves sequentially adding a linear-rigid bidentate linker, a bidentate stabilizer, acid, water, a chain extender, and a UV-responsive end-capping agent to a metal alkoxide monomer solution. Following hydrolysis, polycondensation, chain extension, and end-capping reactions, a high-polymerization-degree linear inorganic molecular chain is synthesized. This chain is then mixed with a low-polymerization-degree linear molecular chain solution, and a cationic component is introduced to obtain a high-solids-content spinning solution with a bimodal molecular weight distribution. This spinning solution is then uniformly distributed by a high-speed, pressure-equalizing spinneret and delivered to an attached-wall guiding-directional pressurized nozzle. Under the synergistic effect of an electrostatic field and a high-speed thin-layer airflow guided by an annular guide protrusion within the nozzle and tangential to the surface of a Taylor cone, precursor nanofibers are obtained. High-temperature calcination yields ceramic nanofiber materials. Compared to existing technologies, this invention significantly improves the spinning rate per nozzle and produces ultrafine fibers with uniform diameter.

A Taylor cone emitter device automated handling apparatus is disclosed, the Taylor cone emitter device automated handling apparatus includes an actuated Taylor cone emitter device handling apparatus, first, second, and third actuators configured to actuate the device handling apparatus horizontally, vertically, and between vertical and horizontal orientations. The device handling apparatus includes a shaft, a mounting portion configured to removably engage a receiving mount for the Taylor cone emitter device, an ejection device configured to disengage the receiving mount, and a watch structure interface configured to guide the Taylor cone emitter device to a predetermined radial orientation and secure the Taylor cone emitter device in the predetermined radial orientation. The Taylor cone emitter device automated handling apparatus is configured to install the Taylor cone emitter device in a vertical orientation, rotate the Taylor cone emitter device to a horizontal orientation, and present the Taylor cone emitter device to an analytical instrument. A handling system and method for analyzing samples using the Taylor cone emitter device automated handling apparatus is disclosed.

The application discloses a kind of multispectral detectors and preparation method thereof, belong to multispectral detector technical field.Method includes: S1, electrode and channel are prepared on substrate;S2, anti-solvent is added to one channel of single nozzle multi-channel nozzle, different perovskite solution is added to other channels;S3, the ink proportion of each channel is adjusted according to the proportion of required halogen element, and the ink of each channel flows is pre-mixed at Taylor cone and then deposited in specified channel;S4, repeat step S3 until all channels are deposited by ink, thereby obtaining multispectral detector with different spectral absorption characteristics.So, the resolution of multispectral detector obtained by the application can reach sub-micron level, and after being prepared into single crystal, it has more excellent performance, and can be accurately positioned, control spectral range, low cost, can realize miniaturization, flexibility and integration.

The invention discloses a device and a method for preparing ultramicro metal powder for electronic packaging based on electrofluid atomization, and relates to the field of metal powder preparation. Comprising a gas isolation hood, an injection module, an aligning and receiving system, a polar plate distance control system and a temperature control system. The gas isolation hood is used for constructing an inert gas environment; the injection module drives molten metal to stably flow out through a metal injection needle through a micro-injection pump; an adjustable electric field is formed between the metal injection needle and the annular electrode by the high-voltage electrostatic power supply, so that the sprayed metal melt forms a Taylor cone and is subjected to electrofluid atomization; accurate centering of the needle head and the annular electrode is achieved through the X-axis and Y-axis micro-motion adjusting device, and accurate control over the distance between electrode plates is achieved through the height adjusting module. The PID temperature control system performs independent temperature control on the metal needle cylinder and the needle head so as to ensure uniform melting of the melt and stable outlet temperature. The device is compact in structure, low in energy consumption and suitable for small-batch rapid preparation of the ultramicro metal powder for electronic packaging.

The invention relates to an electrofluid jet chip based on a glass substrate and a forming method, the electrofluid jet chip comprises a first substrate, the bottom surface of the first substrate is provided with a plurality of annular grooves to form a plurality of bosses, and the bottom surface of each boss is coaxially provided with a through jet hole; a plurality of penetrating spraying windows are formed in the surface of the second base plate, the second base plate is connected to the bottom face of the first base plate, the multiple spraying windows correspond to the multiple annular grooves in a one-to-one mode respectively, and the multiple spraying windows communicate with the multiple annular grooves respectively; and the electrode structure comprises a plurality of electrode rings, the plurality of electrode rings are connected to the bottom surface of the second substrate, the plurality of electrode rings respectively surround the plurality of spraying windows, and potential differences exist between the electrode rings and the bosses corresponding to the electrode rings. The original bottom face of the substrate serves as the bottom face of the boss, the surface precision of the bottom face of the boss is guaranteed, the stability and consistency of Taylor cones formed by functional liquid on the bottom face of the boss are improved, and the printing precision is guaranteed.

One or more electrospray emitters form an electrospray thruster, suitable for generating thrust for maneuvering and / or moving a structure to which the thruster is attached in three-dimensional space. The thruster includes a reservoir containing a fluid, preferably an ionic liquid (IL) fluid. Each electrospray emitter includes a dielectric, with channel(s) formed through a thickness thereof, and an extraction electrode, preferably an extraction grid, on an opposite side of the dielectric from the reservoir. Upon application of a sufficient electric potential differential between the extraction electrode and the fluid, the fluid flows through the channels from the reservoir, forms a Taylor cone at an outlet of each channel, and is ejected in the direction of the extraction grid to generate a thrust by the thruster for movement and / or maneuvering of the structure to which the thruster is attached.

The application belongs to the technical field of electrohydrodynamic printing control, and discloses an electrohydrodynamic printing control method and device, an electronic device and a storage medium, the method comprising: acquiring a viscosity state parameter of a fluid in a printing process of an electrohydrodynamic printing system in real time, inputting the viscosity state parameter into a preset fluid state calculation formula, calculating a fluid state evaluation value of the fluid, adjusting an electric field parameter according to a preset adjustment criterion according to the fluid state evaluation value, so as to adapt to a state change of the fluid, obtaining an adjusted electric field parameter, and optimizing the adjusted electric field parameter based on viscosity change and Taylor cone morphology of the fluid, so as to control the electrohydrodynamic printing system to maintain stability of the Taylor cone; the electric field parameter is adjusted through the fluid state evaluation value, viscosity change and Taylor cone morphology of the fluid in the printing process, so that the electrohydrodynamic printing system maintains the stability of the Taylor cone, and the printing efficiency of the electrohydrodynamic printing is improved.