10results about How to "Reduce thermal effects" patented technology

The application provides a 1.7-micron-band single-frequency fiber laser based on a composite glass optical fiber, which comprises a long linear cavity, and the long linear cavity comprises, in sequence, a high-reflection Bragg grating (3), a composite glass optical fiber (4), a saturable absorber (5) and a low-reflection Bragg grating (6). 3+ The composite glass optical fiber is a multimode optical fiber, has a double-clad structure, and the core is Tb 3+ The inner cladding is Tm 3+ The outer cladding is undoped rare earth composite glass. The 1.7-micron-band single-frequency fiber laser is compact in structure, high in efficiency and narrow in line width, and can be applied to the fields of gas sensing, precision measurement, laser radar and the like.

The application discloses a rotary coating dehumidification system, which comprises a rotary coating dehumidifier in a cylindrical shape, and an adiabatic plate is arranged in the rotary coating dehumidifier along the axial direction of the rotary coating dehumidifier, and the adiabatic plate divides the rotary coating dehumidifier into a dehumidification zone and a regeneration zone. The air channels of the dehumidification zone and the regeneration zone each comprise a primary flow side and a secondary flow side, the two sides of the channels are distributed in an intersecting and spaced manner, the primary flow side is coated with different desiccants in sequence, and the secondary flow side is only used as a cooling air channel in the dehumidification zone. The direction from the air inlet to the air outlet of the primary flow side of the dehumidification zone and the regeneration zone is opposite, and the air outlet and the air inlet of the secondary flow side are distributed at the front end and the rear end of the upper edge of the dehumidification zone. The application has the beneficial effects that the dehumidification performance can be enhanced by using different desiccants to realize a graded adsorption-desorption process, the heat influence of the adsorption process can be effectively eliminated by using the cooling air of the secondary flow side of the dehumidification zone, and the adsorption heat, the residual heat of regeneration and the waste heat of the exhaust gas of regeneration can be recycled and utilized.

This invention discloses an irradiation crosslinking device for the production of special cables using irradiation crosslinking technology, comprising a housing (1), an electron accelerator irradiator (2) located in the upper part of the housing (1), reflective magnet structures (3) located on both sides below the ray outlet of the electron accelerator irradiator (2) located inside the housing (1), an air outlet (4) located on the side of the electron accelerator irradiator (2) located in the upper part of the housing (1), an ozone adsorption component (6) located at the air outlet (4), and a cold air curtain structure (5) located on the wire inlet side of the housing (1), with the air outlet of the cold air curtain structure (5) forming an angle of 25-40° with the wire core axis. This invention has the characteristics of effectively improving irradiation uniformity and reducing thermal effects.

This invention belongs to the field of rare-earth luminescent materials and optical sensing technology, specifically disclosing an upconversion temperature probe excited by NIR-I, its preparation method, and its application. The probe includes a matrix core material, which is a fluoride crystal; and dopant ions, specifically holmium ions (Ho) doped into the matrix core material. 3+ Ho 3+ As the sole luminescent center, it is excited by a near-infrared I light source with a wavelength of 880-920 nm to generate Ho. 3+ Characteristic green upconversion luminescence and red upconversion luminescence. This invention employs the aforementioned NIR-I excited upconversion temperature probe, its preparation method, and its application, utilizing Ho... 3+ The unique energy level competition mechanism of ions enables high-sensitivity temperature measurement over a wide temperature range, and the temperature measurement signal is unaffected by fluctuations in excitation power.

The invention relates to the technical field of semiconductor lasers, in particular to a narrow linewidth laser based on an external cavity grating waveguide and a DFB chip. The high-reflection film is arranged on the left end surface of the DFB laser chip in a plating manner; the first antireflection film is arranged on the right end surface of the DFB laser chip in a plating manner; the grating optical waveguide chip is arranged on the right side of the DFB laser chip, and the left end face of the grating optical waveguide chip abuts against the right end face of the DFB laser chip; the second antireflection film is plated on the left end surface of the grating optical waveguide chip; the third antireflection film is plated on the right end surface of the grating optical waveguide chip; the grating optical waveguide chip comprises a waveguide substrate, and the waveguide substrate is made of an insulating transparent material. The method has the following beneficial effects: 1, the filtering sufficiency and the line width compression effect are remarkable; 2, the advantages of low loss and low power consumption are outstanding; 3, mode regulation and control are flexible, and stability and tunability are both considered; and 4, the compatibility is high.

This invention relates to a novel one-step titanium alloy wire drawing process using rollers. This process replaces the traditional stretching method with multi-angle composite roller rolling, processing the wire in a circular-elliptical-circular pattern. By rationally allocating the elongation coefficient and the horizontal angle between the rollers for each pass, continuous one-step forming of the titanium alloy wire is achieved. This process is carried out at room temperature, requiring no auxiliary lubricants or intermediate heat treatment. Only one annealing after wire forming is needed to obtain a bright wire. The final finished wire exhibits excellent mechanical properties and high dimensional accuracy, significantly simplifying the titanium alloy wire manufacturing process, reducing production costs, and making it suitable for large-scale industrial production.

The utility model relates to a laser crystal fixing structure which comprises a crystal seat, the crystal seat is provided with a through hole, a liquid inlet hole and a liquid outlet hole, the side walls of the two ends of the through hole are provided with installation parts extending towards the axis direction of the through hole, and the liquid inlet hole and the liquid outlet hole are respectively communicated with the through hole to form a cooling liquid circulation channel. The utility model also relates to a solid laser, the laser crystal fixing structure and the solid laser provided by the utility model fix the laser crystal through the mounting parts at the two ends, so that a gap is formed between the laser crystal and the through hole, the laser crystal can be soaked in the cooling liquid in the cooling process, and the cooling efficiency is improved.

The technical scheme of the application provides a SiC MOSFET driving circuit, comprising: a first enabling module, outputting a first enabling signal; a second enabling module, outputting a second enabling signal; a driving signal receiving module, receiving a control logic signal of the SiC MOSFET and outputting; a driving voltage output module, providing a driving voltage to a gate of the SiC MOSFET based on the first enabling signal, the second enabling signal and the control logic signal, wherein the first enabling signal is used for enabling or not enabling the start of the driving voltage output module, and the second enabling signal is used for enabling or not enabling the driving voltage output module to output the driving voltage. The SiC MOSFET driving circuit of the technical scheme of the application can have a shorter start delay time and a higher initial driving voltage, and can adjust the driving voltage based on the temperature of the SiC MOSFET driving circuit.

A heater arrangement for an apparatus for layer-by-layer formation of a three-dimensional object by the consolidation of particulate matter, the heater arrangement having a heater arrangement area, and comprising: one or more shrouded radiative heating elements, arranged over the heater arrangement area, the shrouded radiative heating elements being operable to heat particulate matter at a build bed surface of said apparatus to a desired temperature profile; and one or more radiation-restricting shrouds, which are arranged in communication with the shrouded radiative heating elements, and each of which form one or more passages for restricting the solid angle over which radiation is emitted by the shrouded radiative elements, each passage having a first end which opens towards at least one of said shrouded radiative heating elements, and a second end which opens to the exterior. Also provided is apparatus for layer-by-layer formation of a three-dimensional object by the consolidation of particulate matter, the apparatus comprising: a working space having opposing bottom and top sides; a build bed surface on said bottom side of the working space and upon which successive layers of said object are formed, the build bed surface comprising a printable area; and a heater arrangement area on said top side of the working space and comprising a plurality of spaced-apart radiative heating elements arranged on said top side of the working space, the radiative heating elements being operable to heat particulate matter at the build bed surface to a desired temperature profile; wherein said plurality of spaced-apart radiative heating elements comprises a first group of four or more radiative heating elements; and wherein, as viewed from said top side of the working space, said first group of four or more spaced-apart heating elements is arranged beyond and around the perimeter of printable area and within the heater arrangement area.

The utility model discloses an appliance for transdermal delivery of active ingredients, which comprises a main body shell and a head shell, the head shell is provided with an inner electrode and an outer electrode which are coaxially arranged, the inner electrode comprises a conductive base layer and conductive salient points which are distributed on the surface of the conductive base layer in an array mode, and an insulating layer covers a non-working area and exposes the tops of the salient points to serve as electrode points. And the main body shell adopts a modular nested structure, so that the assembly efficiency is improved. The inner electrode structure realizes electric field focusing through the array design of the conductive salient points, the working voltage requirement is reduced, and the energy loss is reduced; the integrated design eliminates interface contact resistance and improves the current transmission efficiency; the design of the opening of the insulating layer accurately controls the electric field action range and enhances the space targeting; the design of a transition layer and a groove is omitted, the manufacturing complexity and cost are reduced, and the device is suitable for efficient transdermal delivery of active ingredients and can be expanded to the fields of beauty, chronic disease treatment and the like.