31results about How to "Extended range of materials" patented technology

The invention relates to a method for adopting an ITO nano-material as a surface enhanced substrate of an infrared spectrum combined frequency area, belonging to the field of nano-techniques and new materials and particularly relates to an innovation method for surface enhanced near infrared (SENIR) detection and surface enhanced infrared absorption spectrum (SEIRAS) detection on a probe molecule in an infrared spectrum combined frequency area (with a length range of 0.7-7.7 microns) by taking a semiconductor nano-material or membrane indium tin oxide (ITO) as a substrate. The method comprises the three steps of synthesizing surface plasmon resonance nano-material ITO, carrying out surface modification preparation on the probe molecule and carrying out SENIR and SEIRAS detection on the probe molecule by taking the ITO nano-particles, films or sol materials as novel SENIR and SEIRAS substrates. The enhanced substrate is used for detecting that SENIR and SEIRAS signals adsorbed to the surface of the ITO nano-material are obviously stronger than infrared signals in the combined frequency area of a probe molecule body. By virtue of the method, the selection range of the substrate material is broadened for the research of an SEIRAS effect; the method is of brand-new extension of an infrared spectrum detection function.

The invention discloses an LDHs (Layered Double Hydroxides) based water evaporation generator, the LDHs based water evaporation generator is provided with a substrate with a tab, a coating layer is arranged on the substrate, and the coating is LDHs. A preparation method is conducted according to the following steps: preparing an LDHs solid powder; evenly dispersing the LDHs solid powder into a liquid to form an LDHs liquid; coating the LDHs liquid on the substrate with the tab at the room temperature; drying, and enabling the LDHs liquid to form a film evenly. The LDHs based water evaporationgenerator has the advantages that the raw material is convenient to prepare and can be coated at the room temperature, the range of the material for preparing the substrate is expanded, both the hardsubstrate (like a quartz glass sheet) and the flexible substrate (like a plastic sheet, a thin film or a fabric) can be used, and a foundation is laid for the creation of a self-driven wearable device.

The invention provides a multilayer film heterostructure and its preparation method and application; the multilayer film heterostructure can eliminate disturbances from other thermomagnetic effects and isolate ISHE (inverse spin Hall effect), ANE (anomalous Hall effect) and ARL (anomalous Righi-Leduc effect) in a spin current detection layer clearly and effectively, thereby decreasing the reflection of spin current at an interface, and measuring longitudinal spin Seebeck effect at room temperature; the coercive force of a spin current detection layer is not limited, and the material range suitable for practical application is widened.

A heat exchange, which includes a casing having a cylinder; two connectors respectively attached to one end of the cylinder through the small opening; two convex heads respectively connected through the opening end to the large opening of a connector; a core disposed inside the casing; and two heat transfer medium passages. In this way, the space at the ends of the casing of the heat exchanger may be enlarged, thereby providing a space large enough to accommodate the construction personal and better working environment for two-side welding and future maintenance and wider selection range of material of the casing of the heat exchanger; a buffer area is provided for the flow of the heat transfer medium, and the auxiliary like baffles may be mounted inside the convex heads as required to further improve the heat exchange efficiency and reduce the cost.

The invention provides a 3D printing device and method for a high-viscosity resin multiple concentric structure. The 3D printing device comprises a motor, wherein a transmission gear is arranged on the motor; an outer extrusion screw is arranged in an outer barrel shell; a gear engaged with the transmission gear is arranged at the top end of the outer extrusion screw; a first closed space is formed by a cavity between the outer barrel shell and the outer extrusion screw; an outer printing spray head is arranged at the bottom of the first closed space; a second closed space is formed by a cavity between an inner extrusion screw and the outer extrusion screw; a middle printing spray head is arranged at the bottom of the second closed space; a third closed space is formed in the inner extrusion screw; an inner printing spray head is arranged at the bottom of the third closed space; and the three spray heads are concentrically arranged. According to the 3D printing device and method, the outer extrusion screw and the inner extrusion screw are arranged, through the rotation shearing action of the inner screw and the outer screw and inner layer material wrapping, direct-writing extrusion printing of a single structure, a dual concentric structure and a triple concentric structure of a high-viscosity resin material can be achieved, and the range of materials capable of being printed through direct-writing printing is widened.

A severe plastic deformation method for grain refinement comprises the following steps: 1) a severe plastic deformation channel is formed by employing three modules, wherein a first module is on the bottom and a second module is arranged above the first module to form a first channel, and a third module arranged on the first module and the second module form a second channel; 2) a workpiece to be processed is disposed in the first channel, and a vertical pressure is applied on the second module to compact the workpiece to be processed; 3) a push force parallel to the first channel is applied on the third module to drive the second module to move a step along a direction against the first channel, so that the workpiece is extruded into the second channel by a step; 4) the positive pressure applied on the second module and the third module push force are released to drive the second module and the third module to retreat to initial positions; 5) step 2-4 are repeated to complete extruding. According to the invention, demands of die material and precision by the severe plastic deformation can be lowered, preparative material scope is widened, integrally uniform refinement crystal grains can be obtained, and a workpiece dimension maintains the same after processing.

The invention relates to the technical field of 3D printing, in particular to an online component-variable photocuring 3D printing device and method. The device comprises a base, a laser generation module, an injection pump, two or more injectors, a material mixing and feeding mechanism, an X-axis moving module, a scraper, a Y-axis moving module, a printing platform and a Z-axis moving module, wherein the laser generation module, the injection pump, the injectors, the material mixing and feeding mechanism, the X-axis moving module, the scraper, the Y-axis moving module, the printing platform and the Z-axis moving module are mounted on the base. The injection pump drives the injectors to achieve material conveying, discharging ports of the injectors communicate with a material mixing cavity in the material mixing and feeding mechanism through a pipe body, the X-axis moving module drives the material mixing and feeding mechanism to move so that a discharging port of the material mixing and feeding mechanism can move to the position above the printing platform, the Y-axis moving module drives the scraper to move to slick materials on the printing platform, the Z-axis moving module drives the printing platform to move up and down, and a laser printing opening of the laser generation module is formed above the printing platform. By means of the device and method, printing to high-viscosity materials can be achieved, and multiple kinds of materials can be printed according to different proportions.

The present invention provides (3R,4S)-4-(4-hydroxyphenyl)-3-[3-(4-fluorophenyl)-4-hydroxybutyl-2(Z)-ene]-1-( 4-fluorophenyl)-2-azetidinone (formula A) compound crystal form, which can be identified by X-powder diffraction (XRPD) spectrum, differential scanning calorimetry (DSC) spectrum, infrared spectrum, etc. characterization. At the same time, the present invention also provides the preparation method of the crystal form of the compound of formula A, their pharmaceutical composition and application.

The invention relates to a 3D printing device and method free of supporting liquid phase mixed materials, and belongs to the technical field of 3D printing. A container is fixed to a base; a Y-axis motion drive is fixed to the base; a Z-axis motion drive is connected to a sliding block of the Y-axis motion drive through a screw; an X-axis motion drive is connected to a sliding block of the Z-axismotion drive through a screw; a printing spray head is connected to a sliding block of the X-axis motion drive through a connecting block and a screw; three feeding openings of the printing spray headare connected to three sets of feed systems through guide pipes correspondingly; and a gas inlet opening is connected to a gas supply system through a guide pipe. The 3D printing device and method have the advantages that the structure is novel; the material range of 3D printing is widened, and the 3D printing device and method can be suitable for flexible materials and bioactive materials; the process of printing supporting materials is omitted; the time of removing a supporting structure and printing raw materials are saved; the process that materials need to be pre-mixed before printing isomitted; the printing time is saved; the feed quantity of the raw materials is precisely controlled; and the raw materials are mixed sufficiently and evenly.

The invention discloses a die head hot air temperature control method and system applied to melt-blown fabric production. The method comprises the following three steps: S1, collecting sensor data; S2, carrying out segmented control on different stages of equipment according to temperature data and pressure data by a control unit, wherein the stages comprise a starting stage and a conventional operation stage; and S3, carrying out temperature early warning. The system comprises a plurality of temperature sensors, a pressure sensor and a control unit, wherein the temperature sensors are used for being installed in an air heater furnace and at an air heater air outlet and a mold air inlet correspondingly, the pressure sensor is used for being installed at the mold air inlet, the control unitcontrols an air heater and a die through the die head hot air temperature control method applied to melt-blown cloth production. On one hand, the production stability and product quality of the melt-blown fabric are improved, and the available material range of the equipment is expanded; and on the other hand, damage caused by high heat generated by improper control of the die and other equipmentis avoided, and the die life is prolonged.

The invention discloses a metal casting and continuous rolling method and equipment capable of achieving melt distribution and heat exchange separation of a crystallizer, and relates to a method and equipment for producing a metal plate blank. The online moving water-cooled crystallizer with melt distribution and heat exchange function separation is in butt joint with a roller before production, and is separated from the roller during production; according to the production condition, water can be selectively sprayed to the outside of a heat exchanger, and the casting blank heat dissipation capacity is further improved; and the crystallizer composed of a distributor and the heat exchanger solves the contradiction that heat preservation is achieved in the plate erecting process and heat conductivity is good in the production process through melt distribution and heat exchange function separation. In addition, after the split type crystallizer is used for production, a residual metal oxide film in a runner can be conveniently removed; the surface of a casting blank can be prevented from being adhered to the inner wall of the heat exchanger through online movement of the crystallizer; and according to a crystallizer sealing mechanism, under the condition that the crystallizer is separated from the roller, the casting blank does not make contact with air before rolling, in the plate thickness adjusting process and in the rolling process, and the problem that the surface of the casting blank is oxidized in the production process is effectively solved.

The invention discloses preparation of a discontinuous carbon film based on an aluminum-nickel metal layer and application of a respiration sensor, and belongs to the technical field of carbon film preparation. In the preparation process of the carbon film, firstly, aluminum-nickel metal layers with different components are sputtered on the surface of a silicon-based substrate by a magnetron sputtering method, and part of nickel catalytic active sites are passivated by adding aluminum, so that the carbon film with a discontinuous structure is obtained after growth by a CVD (Chemical Vapor Deposition) method; and removing the aluminum-nickel catalytic metal layer on the silicon-based substrate by adopting a wet etching method to obtain the discontinuous carbon film directly falling on the substrate. A conductivity test carried out by evaporating a titanium electrode shows that the carbon film has relatively sensitive responsiveness to respiration, the device is changed from a non-conductive state to a conductive state when external humidity changes such as respiration, and the carbon film has relatively good response sensitivity and can be used for developing and preparing a wearable respiration monitoring device with high sensitivity and low power consumption.

The invention discloses an inflatable sail system comprising a mast fixed to a deck, a sail, a take-up and pay-off line and a take-up and pay-off connecting line. The sail has a soft structure composed of two layers of cloth with edges connected with each other, and the two layers of cloth of the sail are made of parachute nylon cloth; the top of the sail is connected with a first air bag, and thefirst air bag is filled with gas with the density smaller than the air density. The first air bag is filled with hydrogen or helium; an inflating hole is formed in the first air bag; the top of the first air bag is connected with a second air bag, and the second air bag is filled with gas with the density smaller than the air density. The parachute nylon cloth is used as the material of the sail;compared with an existing sail material, the provided inflatable sail system enables the cost to be effectively saved; meanwhile, in order to enable the sail to rise into the high altitude more effectively, gas with the density smaller than the air density is used, so that the sail can be driven by air buoyancy to smoothly rise into the air.

The invention relates to a method for simply preparing a multi-band near-field enhanced composite nano antenna, and belongs to the technical field of laser processing application. Single-point processing is carried out through oblique incidence focusing femtosecond laser, follow-up pulse dislocation processing is regulated and controlled, the offset direction is adjusted, the micro-nano grating structure can be manufactured by simply controlling the femtosecond laser and changing the period of the micro-nano grating structure without the help of additional conditions by utilizing the arbitrariness of the included angle between the edge of the preorder structure and the femtosecond laser, and then, focusing processing is performed by using an objective lens to obtain nano jet particles to prepare the composite nano antenna capable of performing near-field enhancement in multiple wavebands. According to the method, the limitation of single near-field enhancement wave band of the nano antenna at present is solved, the method for preparing the micro-nano grating and changing the period of the micro-nano grating through femtosecond laser oblique incidence dislocation single-point processing is simple and easy to implement, the influence of a liquid environment or other processing environments on a sample is avoided, and the method can be widely applied to the fields of optical communication, sensing, nano photoelectric devices and the like.

The invention provides a metal wire material additive equipment based on an alternating magnetic field, which at least includes a numerical control device, a substrate, and a deposition head. Both the substrate and the deposition head are installed on the numerical control device, and the substrate is located on the deposition head. Below, the deposition head includes a shielding shell and a wire wheel installed on the shielding shell, the wire is wound on the wire wheel, and a wire feed wheel, a ceramic guide tube, an alternating magnetic field coil and a shielding gas are arranged inside the shielding shell The top of the shielding shell has a wire inlet, the wire feed wheel is installed below the wire inlet, the ceramic guide tube is vertically fixed below the wire feed wheel, and the alternating magnetic field coil is wound on the ceramic guide on the outer wall of the lower part of the tube. At the same time, the present invention also provides a material additive method based on the above material additive equipment. The present invention solves the existing problems of difficult preparation of metal powder, high price, and low energy efficiency of laser light sources.