34results about How to "Cycle controllable" patented technology

The solution method for preparing metal photonic crystal belongs to the technical field of nano photoelectron materials and devices thereof. The existing method for preparing metal photonic crystal is faced with the problems such as high cost, low efficiency and small area of preparation, etc. In the invention, sequentially, optical resist is rotatably coated on a substrate; the interference photolithography is adopted to prepare one-dimensional or two-dimensional nano optical grating structures; metal nano particle sol is rotatably coated and goes through low temperature heat treatment, thus obtaining the metal photonic crystal. The invention has the advantages of low cost, high efficiency and preparation of the metal photonic crystal in a large acreage and the like.

The invention is applicable to the technical field of gratings, and provides a method and a system for preparing micro-nano optical fiber Bragg gratings. The system comprises a laser generating unit,a preparation unit, a displacement platform and an upper computer. Samples can be arranged on the displacement platform, and each sample is a micro-nano optical fiber coated with a layer of curing adhesive; the laser generating unit is used for generating femtosecond laser with preset power values and transmitting the femtosecond laser to the preparation unit; the preparation unit is used for focusing the femtosecond laser on the micro-nano optical fibers; the displacement platform can move under the control of the upper computer, so that radial scanning can be carried out by the femtosecond laser along the micro-nano optical fibers, and preliminarily arranged Bragg gratings can be cured on the micro-nano optical fibers. The method and the system in an embodiment of the invention have theadvantages that tedious grating sensitivity enhancement treatment procedures can be omitted when the micro-nano optical fiber Bragg gratings are prepared by the aid of the method and the system, grating periods can be controlled, and the micro-nano optical fiber Bragg gratings are high in reflectivity; the Bragg gratings prepared by the aid of the method and the system are cured on the surfaces ofthe micro-nano optical fibers and are extremely sensitive to external environments, and the system is low in cost.

The invention discloses a method for directly writing an organic semiconductor laser by ultraviolet laser interferometry etching and belongs to the technical field of nano photoelectronic materials and devices. The method comprises the steps as follows: (1), preparing fluorescent emission organic semiconductor material organic solution; (2), spin-coating the fluorescent emission organic semiconductor solution on a substrate to obtain an organic semiconductor membrane with uniform thickness of 50-500 nanometers; and (3), enabling strong ultraviolet laser interference patterns to act with the organic semiconductor membrane, so that the organic semiconductor membrane in an interference bright strip area is etched instantly and the unexposed area is left. The method has the advantages of low cost, good repeatability, high preparation efficiency and controllable cycle, and can be used for preparing large-area one-dimensional or two-dimensional organic semiconductor lasers.

The invention discloses a method for preparing an embedded micro-nano channel, and relates to micro-nano processing technology. The method comprises the steps of (1) cleaning a substrate; (2) preparing a support sacrificial layer with the cross sectional dimensions on nanoscale; (3) putting and fixing the processed sample by the step (2) in a device; (4) observing graphics to find the position of the nanostructure of the support sacrificial layer; and (5) depositing a tungsten covering layer on the support sacrificial layer through an ion beam-assisted deposition technology. The preparation method is based on a phenomenon of disappearance of the nanostructure of the support sacrificial layer to prepare the embedded micro-nano channel after the tungsten covering layer is deposited by aid of the ion beam, is flexible in process, has high efficiency and good controllability, and is a manufacturing method for the micro-nano channels with any shape inside a material body.

The invention discloses a spherical denitration catalyst and a preparation method thereof, and belongs to the field of catalysts. The preparation method of the spherical denitration catalyst comprisesthe following steps: (1) preparing a precursor salt solution; (2) preparing a precursor; and (3) drying the precursor, and then calcining the dried precursor to obtain a spherical denitration catalyst powder. The invention also discloses the spherical denitration catalyst. According to the spherical denitration catalyst and the preparation method thereof, the preparation cycle is short, and the operation is simple, thus the preparation method can be used for large-batch continuous production; and the prepared spherical denitration catalyst powder has a high low-temperature activity, and has excellent fluidity and dispersibility, so that in overall catalyst coating, increase of coating thickness and load capacity is facilitated.

The present invention belongs to the technical field of microorganisms and food biology, and particularly relates to a Eurotium cristatum Liupao tea standardization production process, which comprises a Eurotium cristatum fermentation step, wherein the key step of the Eurotium cristatum fermentation step is carrying out single strain fermentation on Eurotium cristatum having a preservation number of CGMCC NO.11040. According to the present invention, the prepared Zhongchajiaocang Liupao tea product can achieve the stable Eurotium cristatum fermentation so as to achieve the controlled number of the Eurotium cristatum in the Liupao tea product, the quality is stable, and the feature is distinctive.

The invention discloses a BIM-based building material business and building material information uploading system. The system comprises a Revit-based BIM and a building material business data online statistics and uploading scheme. Through the technical scheme, after Revit modeling is finished, Revit family file data and corresponding building material business data are subjected to statistics from the BIM and uploaded to outside, so that project material purchase demands are directly formed, the goal that the BIM is equivalent to a purchase list is achieved, and the purchase problem of materials required for a project is effectively solved.

The invention provides a locomotive side window durability testing device which comprises a rack (1), and a side window fixing plate (3) and a side window opening/closing drive mechanism which are arranged on the rack, wherein an inner hole (21) fitting the outer contour of a side window frame (3) is formed in the side window fixing plate; the side window opening/closing drive mechanism comprisesa connecting seat (4) and a connecting rod mechanism (5); one end of the connecting seat is connected with a side window sash (6), and the other end of the connecting seat is hinged with the connecting rod mechanism; the connecting rod mechanism comprises a drive rod (51) and a connecting rod (52); the drive rod is connected with a driving device (53); and the driving device is used for driving the drive rod to swing in a reciprocating manner to repeatedly open and close the side window so as to further implement a durability test. The testing device disclosed by the invention has the advantages of simple and compact structure, controllable cycle, excellent reliability and the like, is capable of greatly improving the durability testing verification efficiency and is very convenient to mount and operate.

The invention discloses a communication protocol conversion card and a communication protocol conversion system,the communication protocol conversion card is applied to a frequency converter and comprises a PHY chip; a JL-103 chip used for obtaining a master station command through the PHY chip, preprocessing the master station command and then sending the master station command to the MCU; the JL-103 chip is also used for packaging the response data according to the MECHATROLINK III protocol and sending the response data to the main station through the PHY chip; and the MCU is used for judging whether the master station command is a self-resolvable command or not, if yes, analyzing and responding to the master station command, then generating response data, and if not, sending the master station command to the frequency converter, receiving analysis data returned by the frequency converter, and generating the response data according to the analysis data. The protocol chip JL-103 special for the Anchuan slave station is adopted to communicate with the master station, stability and reliability are achieved, the period is controllable, and the cost is low.

The invention discloses a high-performance circular polarization dichromatic device and method with enhanced chirality optical response in the surface. Ion beams sputters precious metal in the surface with an inclination angle of a substrate, a precious metal film is sputtered in part of a projection area vertical to the surface of the substrate of mask microspheres, the mask microspheres as a reticle etches area not covered by the mask microspheres of the precious metal film, the precious metal film exposed between adjusted mask microphones is etched, precious metal in the projection area vertical to the substrate surface of the mask microspheres is reserved, and the mask microspheres are removed to obtain a metal crescent array formed on the substrate. The period controllable metal crescent array has the advantages of large area, low cost, high circular dichromatic optical activity, tunable response waveband, uniform and environment protective, and can satisfy needs for theoretical research and practical application; and thus, a strong tool and solid basis are provided for theoretical research and practical application of chirality optics.

The invention discloses a milling device for cell pole faces of lithium batteries. The milling device comprises a portal mechanism, a trapezoidal lead screw mechanism and an electric spindle. An X-axis clamping mechanism is arranged on one side of the portal mechanism. An X-axis positioning mechanism is arranged at the other end of the X-axis clamping mechanism. A Y-axis clamping mechanism is arranged on one side of the X-axis clamping mechanism. A Y-axis positioning mechanism is arranged at the other end of the Y-axis clamping mechanism. A Z-axis positioning mechanism is arranged at the upperend of the portal mechanism. A dedusting device is arranged at the lower end of the portal mechanism. A servo motor A is arranged on the inner side of the portal mechanism. According to the milling device for the cell pole faces of the lithium batteries, the product quality can be improved, and quality stability is ensured; the labor productivity is improved; the working condition of operators isimproved, the product cycle is clear, and the product quality is easy to control; and the model changing and updating cycle of products can be shortened, and corresponding equipment investment is reduced; and automatic mass production of the products can be achieved.

The invention provides a method for improving the breeding efficiency of livestock. Specifically, the invention provides an application of prostaglandin F2alpha or a homologue thereof in improving the superovulation efficiency of livestock, and a method for improving the superovulation efficiency of the livestock.