32results about How to "Low operational difficulty" patented technology

The invention discloses a preparation method of perovskite single crystals. The perovskite single crystals are CsPbBr3 perovskite single crystals or CsPb2Br5 perovskite single crystals, and the perovskite single crystals are in the shape of sheet or rod. A preparation method comprises the following steps: cleaning a single crystal growth substrate, wherein respectively carrying out ultrasonic treatment on the substrate for 15-30 minutes with acetone, 70%-80% ethanol and deionized water, taking out the substrate, and drying the substrate in a drying oven overnight to obtain a single crystal growth substrate; preparing a perovskite precursor solution, wherein dissolving CsBr and PbBr2 in hydrobromic acid or dimethyl sulfoxide according to the proportion of 1 / 1-1 / 4, controlling the concentration of CsBr to be 0.06 mol / L to 0.3 mol / L, the concentration of PbBr2 to be 0.06 mol / L to 0.3 mol / L, and obtaining a perovskite precursor solution; and preparing the perovskite single crystals, namelypreheating the perovskite precursor solution to 80-95 DEG C, dripping the perovskite precursor solution on the substrate, and removing the solvent to obtain the perovskite single crystals. The methodis simple to operate and low in operation process difficulty, and the components and morphology of the perovskite single crystals are adjustable.

The invention discloses an ultrasonic-based quick manganese-doped perovskite quantum dot preparation method. A manganese-doped perovskite quantum dot refers to Mn:CsPb(Br / Cl)3. The preparation methodincludes steps: (1) respectively dissolving PbBr2, Cs(AC) and MnCl2 4H2O into DMF to obtain reactant precursor solution; (2) sequentially dropwise adding the precursor solution of PbBr2 and Cs(AC) inthe step (1) into stirred oleic acid, n-octylamine and n-hexane mixed solution, wherein as reaction time grows, the solution becomes white emulsion, so that the CsPbBr3 perovskite quantum dot is prepared; (3) dropwise adding the MnCl2 precursor solution in the step (1) into the CsPbBr3 perovskite quantum dot solution prepared in the step (2) by a rate of 20-60 drops per minute, wherein the whole reaction is quickly transferred into an ultrasonic apparatus to carry out. The method is simple in preparation process and short in production period, the precursor solution is high in stability and reusable, and suitableness for industrial popularization is realized.

The invention discloses a preparation method of a perovskite micron-ring array which is a whole-inorganic CsPbX3 perovskite micron-ring array or a whole-inorganic CsPb(BrnAl-n)3 perovskite micron-ringarray, wherein X is one of chlorine ion, bromine ion or iodine ion, A is one of chlorine ion or iodine ion, 0 < n < 3. The preparation method includes the steps of: 1) production of a colloid single-layer template: spin-coating a substrate with a polystyrene microsphere suspension liquid to prepare the colloid single-layer template when water is evaporated out completely; 2) preparation of the perovskite micron-ring array: spin-coating the colloid single-layer template with a perovskite precursor solution, and when the coating is dried, soaking the template in methylbenzene to remove the polystyrene microspheres, and heating the template to form the perovskite micron-ring array. The method has simple operations and is low in operation difficulty. The size of the perovskite micron-rings and the emission wavelength of the perovskite micron-ring array are both adjustable.

The invention provides a method for improving the shape of the side wall of a through hole. The method comprises the following steps: a silicon substrate is placed in a plasma etching chamber; reaction gases are bubbled into the plasma etching chamber, wherein the reaction gases include a fluorine-containing gas and one or two of COS and H2S; and carbon ions, oxygen ions, hydrogen ions and sulfide ions which are generated by COS or H2S are reacted with side wall silicon to produce a carbon-silicon compound, a silicon-oxide compound, a silicon-sulfur compound and a silicon-hydrogen compound, and the compounds are attached to the side wall and the bottom of a silicon through hole to form a passivation layer. An F plasma vertically bombards the passivation layer or Si at the bottom under high power, Si at the bottom of the hole can be quickly etched, and the F plasma etches the passivation layer at a low speed as the F plasma does not apply vertical kinetic energy force to the side wall of the hole. Therefore, in the whole etching process, the rate of lateral etching is low, and the aeolotropism is good.

A regeneration method for a liquefied gas thiol-removing alkaline solution comprising the following steps: performing an oxygenation reaction with respect to a liquefied gas thiol-removing alkaline solution and, at the same time, utilizing a high air-liquid condition to extract a disulfide and a polysulfide into a gas phase, thus completing the separation of the disulfide and the polysulfide from the alkaline solution, and implementing the regeneration of the liquefied gas thiol-removing alkaline solution.

An ultrasonic oscillator unit including an ultrasonic oscillator array in which a plurality of ultrasonic oscillators are arranged; an electrode part having a plurality of electrodes electrically connected to the plurality of ultrasonic oscillators, respectively; a circular-arc backing material layer disposed on a rear surface of the ultrasonic oscillator array; three or more wiring boards electrically connected to the plurality of electrodes of the electrode part; and three or more connectors to which a plurality of cables are connected, respectively. The three or more wiring boards are respectively mounted to the three or more connectors and electrically connect the plurality of electrodes of the electrode part to the plurality of cables. The three or more connectors are arranged on a rear surface side of the backing material layer in a width direction.

A pixel driving circuit and a display panel are provided. The pixel driving circuit uses a 7T3C structure to effectively compensate a threshold voltage of a driving transistor in each pixel, a compensation structure of the pixel driving circuit is relatively simple, and operation difficulty is low. Moreover, a light emitting device emits light during a programming phase and an illumination phase, which increases light emitting time of the light emitting device, thereby improving a brightness and a life of the display panel.

The invention discloses a preparation method of an adjustable solid-state fluorescent carbon dot for an LED (light-emitting diode). The carbon dot is an anhydride-terminated carbon dot and has bright fluorescence in a solid state. The preparation method comprises the following steps: (1) preparing a carbon dot precursor solution: dispersing dithiosalicylic acid in a saturated acetic acid solution, and conducting ultrasonic dispersing uniformly; (2) preparing carbon dots: transferring the carbon dot precursor solution into a reaction kettle, conducting heating for reaction, conducting cooling to room temperature, conducting purifying, and conducting freeze-drying to obtain carbon dot powder; and (3) building an LED: fully mixing the carbon dot powder with polystyrene dissolved in toluene to obtain uniform mixed slurry, and coating an ultraviolet LED lamp bead with the mixed slurry, and conducting curing to obtain the carbon dot LED. The method disclosed by the invention is simple to operate and low in difficulty of an operation process, innovation is made on the basis of traditional carbon dot purification, the problem of fluorescence quenching of the carbon dots in a solid state is solved, and the carbon dots with good luminescence in the solid state are obtained.

The invention discloses a novel multifunctional capacitive touch screen. The screen includes Cover Lens glass, a flexible printed circuit (FPC), Sensor glass and EMI glass which are arranged from topto bottom in sequence, wherein the Cover Lens glass is fixed with the flexible printed circuit (FPC) through OCA join adhesive, the Sensor glass is also fixed with the EMI glass through OCA join adhesive, and gold wires are pulled out from the Sensor glass to be connected with the FPC. The upper surface and lower surface of the EMI glass are plated with a layer of ITO membrane separately, the resistance value of the ITO membrane on the upper surface of the EMI glass is smaller than 15 ohms per square resistance, and the ITO membrane on the upper surface of the EMI glass serves as an electromagnetic shield; the ITO membrane on the lower surface of the EMI glass serves as a heating resistor. The novel multifunctional capacitive touch screen improves electromagnetic shielding, low-temperaturefast starting and other military environmental requirements for military on-board displayers, and meanwhile reduces the operation process difficulty of the on-board displayer products.

The invention discloses a preparation and a fluorescence regulation method of water-soluble non-toxic carbon quantum dots. The method comprises the following steps: 1) preparing a carbon quantum dot precursor solution; 2) preparing carbon quantum dots: transferring the precursor solution into a reaction kettle, performing a reaction at 200 DEG C for 24 h, performing natural cooling after reaction,and performing purification by a dialysis bag to obtain the carbon quantum dots; and 3) performing a fluorescence regulation process: regulating the B and N doped carbon quantum dots to emit light byutilizing the pH value and the filling degree of the reaction kettle to prepare the carbon quantum dots with different fluorescence wavelengths and different light emitting intensities. The method has the advantages of simplicity in operation, and low operation process difficulty, and the fluorescence wavelength of the obtained carbon quantum dots does not change along with the change of excitinglight energy.

The invention provides a method for controlling a wind power integration inverter for realizing same frequency and same phase, and a circuit thereof. The method and the circuit settle the problems of asynchronous phase and asynchronous frequency in integration of a wind power generating system, and overcome the defects in digital and software phase locked loop technology of an existing wind power integration inverter. Furthermore the method and the circuit have advantages of simple structure, high flexibility, high response speed, high reliability, etc. The method and the circuit are widely used for the integration inverter of the wind power generating system. The method of the invention comprises the steps of acquiring a current signal and an electric grid voltage signal which are output from the wind power integration inverter, performing phase-shifting amplification on the voltage signal of the electric grid, multiplying the phase-shifted amplified voltage signal with the current signal which is output of the wind power integration inverter through a sinusoidal phase detector for generating a phase difference signal; multiplying the phase difference signal with a phase-shifted voltage signal of the electric grid through the sinusoidal phase detector for generating an amplitude adjusting signal; and overlapping the amplitude adjusting signal with the voltage signal of the electric grid for generating a vector control signal, wherein the vector control signal is used for controlling the current signal which is output from the wind power integration inverter for realizing same frequency and same phase with the voltage signal of the electric grid.

The invention relates to a preparation method of a hydrophobic oleophylic adsorbent by taking towel gourd cotton as a raw material. The preparation method comprises the following steps: 1, taking towel gourd cotton as a raw material, soaking, cleaning and drying the material; 2, immersing the material in an alkaline solution for pretreatment, then adjusting the material to be neutral with an acid,and carrying out cleaning and drying; 3, immersing the material subjected to alkali treatment into a mixed solution of tetraethyl silicate, absolute ethyl alcohol and pure water, then adding a properamount of ammonia water, and then cleaning and drying with ethyl alcohol; and 4, immersing the material in a mixed solution of hexadecyl trimethoxysilane and pure water, adding a proper amount of acetic acid, cleaning with ethanol, and drying to obtain the modified adsorption material. Compared with the prior art, the adsorbent can be widely applied to petroleum leakage treatment and oily wastewater treatment, and the oil absorption material obtained through modification is high in adsorption rate, low in cost, biodegradable and free of secondary environmental pollution.

A ultrasonic oscillator unit including an ultrasonic oscillator array in which a plurality of oscillators are arranged in a circular-arc shape; an electrode part that is provided on at least one end surface of the plurality of oscillators perpendicular to a longitudinal direction thereof and that is electrically connected with the oscillators; a backing material layer that is disposed on a rear surface of the ultrasonic oscillator array; and a cable wiring part including a flexible printed wired board. The flexible printed wired board includes a cable connecting part that extends to a lower side of the backing material layer, is separated into a plurality of belt-like pieces, and has, in a comb shape, a plurality of strip-like electrode parts in which at least one electrode pad is linearly disposed in the longitudinal direction of each of the belt-like pieces.

The invention discloses a melting prevention method of vacuum-packaged salted pork in jelly. The method comprises the following steps: adding 0.65-2.0 parts by weight of TG enzyme to 75-150 parts by weight of a marinating soup before die-filling and molding, reacting at 35-65DEG C for 15-45min, carrying out water bath sterilization on a product obtained after molding at 65-90DEG C for 20-90min, and cooling the sterilized product in 0-10DEG C cold water for 30-60min. The total quantity of bacteria in the salted pork in jelly when the salted pork in jelly is stored for 30d reduces by two orders of magnitude; and the method has the advantages of increase of the elasticity and the chewiness of the salted pork in jelly, improvement of the slicing property of the salted pork in jelly, no influences on the flavor of the salted pork in jelly, and reduction of the saline taste.

The invention discloses a preparation method of a perovskite micron-ring array which is a whole-inorganic CsPbX3 perovskite micron-ring array or a whole-inorganic CsPb(BrnAl-n)3 perovskite micron-ringarray, wherein X is one of chlorine ion, bromine ion or iodine ion, A is one of chlorine ion or iodine ion, 0 < n < 3. The preparation method includes the steps of: 1) production of a colloid single-layer template: spin-coating a substrate with a polystyrene microsphere suspension liquid to prepare the colloid single-layer template when water is evaporated out completely; 2) preparation of the perovskite micron-ring array: spin-coating the colloid single-layer template with a perovskite precursor solution, and when the coating is dried, soaking the template in methylbenzene to remove the polystyrene microspheres, and heating the template to form the perovskite micron-ring array. The method has simple operations and is low in operation difficulty. The size of the perovskite micron-rings and the emission wavelength of the perovskite micron-ring array are both adjustable.

A ultrasonic oscillator unit including an ultrasonic oscillator array in which a plurality of oscillators are arranged in a circular-arc shape; an electrode part that is provided on at least one end surface of the plurality of oscillators perpendicular to a longitudinal direction thereof and that is electrically connected with the oscillators; a backing material layer that is disposed on a rear surface of the ultrasonic oscillator array; and a cable wiring part including a flexible printed wired board. The flexible printed wired board includes a cable connecting part that extends to a lower side of the backing material layer, is separated into a plurality of belt-like pieces, and has, in a comb shape, a plurality of strip-like electrode parts in which at least one electrode pad is linearly disposed in the longitudinal direction of each of the belt-like pieces.

The invention discloses a single-component CsPb(Cl / Br) with a zero-dimensional Mn-doped core-shell structure 3 The preparation method of white light quantum dots, the preparation method comprises the following steps: (1) preparation of cesium oleate precursor solution; (2) PbBr 2 , MnCl 2 , oleic acid, oleylamine and ODE mixed solution preparation (3) zero-dimensional Mn-doped core-shell structure single-component CsPb(Cl / Br) 3 Preparation of white light quantum dots. The invention has simple preparation process and controllable spectrum, and finally obtains a single-component manganese-doped zero-dimensional perovskite with white light emission capability, thereby reducing the complexity of realizing white light LED.

A virtual object control method is described. A skill type of a skill is obtained in response to a first click / tap operation on a skill control. In response to determining that the obtained skill type of the skill is a target skill that supports selecting a casting position based on a screen click / tap, a castable region of the skill in a virtual scene is displayed according to a position where a controlled virtual object is located and a casting range of the skill. In response to a second click / tap operation in the castable region, the controlled virtual object is controlled to cast the skill at a casting position indicated by the second click / tap operation. Thus, a complex drag operation based on a wheel virtual joystick need not be performed, simplifying the operation of accurate aiming by a user. Apparatus and non-transitory computer-readable counterpart embodiments are also provided.

The invention discloses a preparation and fluorescence control method of water-soluble non-toxic carbon quantum dots. The preparation method includes the following steps: 1) preparing a carbon quantum dot precursor solution; 2) preparing carbon quantum dots: moving the precursor solution into a reaction kettle 24 hours at 200°C, cooled naturally after reaction, and purified by dialysis bags to obtain carbon quantum dots; 3) The method of fluorescence regulation is: use the pH value and the filling degree of the reactor to control the emission of B and N-doped carbon quantum dots , to prepare carbon quantum dots with different fluorescence wavelengths and different luminous intensities. The method of the invention is simple in operation and low in difficulty in the operation process, and the fluorescence wavelength of the obtained carbon quantum dot does not change with the change of excitation light energy.

The invention provides a method for preparing an ITO film based on magnetron sputtering and etching treatment, and the method comprises the following steps: S1, rotating a substrate, and cleaning the surface of the substrate through clean water; s2, uniformly spin-coating polystyrene microspheres on the surface of the substrate; s3, performing oxygen plasma etching operation on the polystyrene microspheres to improve the sizes of the polystyrene microspheres; s4, sputtering an ITO target material on the surface of the substrate under a vacuum condition to form an ITO thin film, and depositing for a period of time; and step S5, putting the ITO film in a toluene solution for ultrasonic treatment so as to etch the polystyrene microspheres, and finally obtaining the ITO film, thereby realizing the preparation of the ITO film.

The invention discloses a method for simultaneously improving open-circuit voltage and stability of a full-suede perovskite / crystalline silicon laminated solar cell, and belongs to the technical field of solar cells. The solar cell is composed of a crystalline silicon bottom cell, a microcrystalline silicon tunneling composite layer and a perovskite top cell, a two-dimensional / three-dimensional perovskite bulk phase heterojunction light absorption layer of the perovskite top cell is prepared based on a vacuum-assisted two-step method, and in the first step, vapor deposition is carried out on lead iodide and cesium bromide at the same time through thermal evaporation vacuum deposition equipment; forming a layer of lead iodide and cesium bromide mixed inorganic compound film; and 2, coating the inorganic compound film with a ternary cation mixed organic ammonium salt solution of formamidine, guanidine and thiophene organic ammonium in a liquid phase manner. The introduction of guanidine cations can inhibit the migration of halide ions in the formamidino three-dimensional perovskite thin film and the in-situ formation of the thiophene organic ammonium-based two-dimensional perovskite at the grain boundary, thereby realizing the preparation of the high-performance full-suede perovskite / crystalline silicon laminated solar cell.

The invention discloses a distributed encryption method for an off-line video. The method comprises: off-line video data are segmented into video fragmentation data that are stored; according to the video fragmentation data, an elastic distributed data set is constructed, wherein each element in the elastic distributed data set is one video fragmentation data; all elements in the elastic distributed data set are distributed to all node work stations; and the node work stations carry out encryption processing on the video fragmentation data and output encryption results. With the method, distributed encryption on an off-line video can be realized rapidly. Compared with the prior art, the method has advantages of simple process, low operation realization difficulty, and good encryption effect.

The invention relates to the field of hook-type commutator preparation, in particular to a punching device for hook-type commutator preparation, comprising a body, a transfer member is rotatably connected to the top side of the body, and a driver for driving the transfer member to rotate is provided in the top of the body, The circumferential side wall of the transfer piece is provided with several groups of station ports for transferring the copper shell at equal angles. The rear of the top wall of the body is provided with a punching hole, and the punching hole is slidably connected with a supporting part. A closed cylinder in which the supporting part reciprocates in the punching port; the present invention directly punches the copper shell, avoids the process of stamping and re-rolling the copper shell into a copper shell, effectively reducing the difficulty of the operation process, and at the same time passing the feeding conveyor belt, lowering With the cooperation of the material conveyor belt and the transfer parts, the copper shells are transferred to the stamping station in turn, and the stamped copper shells of the stamping station are transferred out in turn and sent to the next process to realize continuous flow operation and improve the overall preparation. Efficiency of hook commutators.

The invention discloses a modification method of a full-suede perovskite / crystalline silicon laminated solar cell, which is characterized in that annealing is carried out twice aiming at a vacuum-assisted two-step method, and an inorganic compound film subjected to vacuum physical deposition in the first step is subjected to steam annealing treatment through a mixed solvent consisting of a good solvent and a poor solvent. The good solvent can react with lead ions in the inorganic compound film to form an intermediate complex, so that the crystallization of the perovskite polycrystalline film during the second thermal annealing is delayed, and the crystallization quality of the perovskite polycrystalline film is improved; in addition, it is ensured that the inorganic compound layer coats the textured surface of the whole crystalline silicon bottom cell in the first step, so that the excellent performance of the final all-textured perovskite / crystalline silicon laminated solar cell is ensured, and the modification method is expected to promote the industrialization process of the all-textured perovskite / crystalline silicon laminated solar cell.

Provided is a synthesis process for the one-step production of a monomeric polyether for polycarboxylic acid water reducing agents, wherein the monomeric polyether is synthesized in one step by mixing an initator and a catalyst at a temperature and a pressure, and then introducing same into a reaction kettle together with an epoxide at a certain ratio for ring opening polymerization. The synthesis process of the present invention realizes continuous production without the need of first synthesizing a prepolymer and then synthesizing a macromolecular monomeric polyether step by step, thereby improving the production efficiency. By separating four links, i.e. displacement, polymerization, curing and neutralization, in conventional monomeric polyether production processes, the present invention more effectively controls each of the links and increases the utilization efficiency of the reaction kettle; in addition, the process is easy to control, the structure of the product is stable, and the retention of double-bonds is high.