30 results about "Laser evaporation" patented technology

A composite layer of a sorbent, chemoselective, non-electrically-conducting polymer and nano-particles of an electrically conducting material dispersed throughout the polymer is formed on a substrate by pulsed laser deposition, matrix assisted pulsed laser evaporation or matrix assisted pulsed laser evaporation direct writing.

The invention relates to a method for deposition of material by laser evaporation wherein the employed laser is a continuous or semi-continuous laser. Using such a laser, it is possible to evaporate the target material in a controlled manner from a local pool of liquid or fluidized target material at the target surface. The invention also provides a system for executing said method.

The invention relates to work of art carved on a silver-imitated metal plate, which is prepared by the following steps: taking a magnesium alloy plate as a raw material; forming various planar carving and hollows by various carving methods, such as mechanical carving, laser evaporation carving and electrochemical and chemical carving; post-processing the formed planar carving and hollows to obtain the work of art of painting and calligraphy. The steps are applicable for carved work of arts in various breadths with high silver-imitation degree in terms of the color and the texture.

The invention provides a continuous rapid laser coating method of a superconducting layer in a second-generation high-temperature superconducting strip. According to the invention, through a method of bi-dimensionally scanning a superconducting target along an x-y axle, the whole surface of the target can be utilized and a laser evaporation coating process can be stably and sustainably carried out; coating intervals are increased through a method of scanning along the motion direction of the strip by use of laser spots; and the width of the coating interval vertical to the motion direction of the strip is increased through a method of twining the strip on a belt roller above a heater multiple times. By using the method provided by the invention, evaporated substances are fully collected on a metal base band to the greatest extend, thereby effectively improving the preparation speed of the strip, increasing the utilization rates of the target and the evaporated substances, greatly improving the production efficiency and reducing the production cost of the strip. According to the method provided by the invention, the rapid coating of the second-generation high-temperature superconducting strip suitable for large-scale industrial production can be realized.

The invention relates to an interfacial modification membrane for a solid electrolyte for a lithium battery and a preparation method thereof. The interfacial modification membrane for the solid electrolyte for the lithium battery is characterized in that a layer of interfacial modification membrane is attached to one face or both faces of a solid electrolyte. The preparation method of the interfacial modification membrane comprises the following steps of: (1) selecting a fast-ionic conductor or a uniform mixture of a lithium-ion active material and water; (2) forming a target material by compressing the fast-ionic conductor or the uniform mixture, sintering the target material for 3-24 hours at the temperature of 500-1200 DEG C, and then, carrying out natural cooling with a furnace; and (3) attaching the target material to the face or the both faces of the solid electrolyte through magnetron sputtering, laser evaporation or electron beam evaporation, thereby obtaining the interfacial modification membrane for the solid electrolyte. According to the interfacial modification membrane for the solid electrolyte for the lithium battery and the preparation method thereof, as the layer of interfacial modification membrane is attached to the face / faces of the solid electrolyte playing a diaphragm role, the interfacial impedance between the solid electrolyte and an electrolytic solution and other types of electrolytes is reduced, the ion transmission capacity of an interface layer of the solid electrolyte is improved, and the discharge performance of the battery is effectively improved; and the preparation method is simple, and the large-scale production is facilitated.

The invention discloses a multi-channel laser coating method for preparing a cerium dioxide seed layer. According to the invention, a multi-channel transmission device is adopted; the cerium dioxide seed layer is prepared on an annealed nickel-tungsten metal base band through a multi-channel laser evaporation coating method; in the coating process, the coating speed of the cerium dioxide seed layer on the base band is greatly accelerated through winding repeatedly the nickel-tungsten metal base band on a roll shaft and passing through a coating region, can reach over one hundred meters per hour and is suitable for kilometer-level long band preparation; the atmosphere adopted when the method is used for coating is a mixed gas of argon and hydrogen, the argon is am inert gas and mainly plays a buffer function, and the hydrogen has the main function of consuming residual oxygen in the coating cavity in the coating process, so that baseband surface oxidation which can be generated under the condition of high-temperature coating and affects the orientation of the cerium dioxide seed layer is avoided; in addition, the coating atmosphere is the mixed gas of argon and hydrogen so that therequirement on base vacuum degree of a coating system can be greatly reduced, the equipment investment is saved, and the band material cost is reduced.

The object of the present invention is to solve the problems in the prior art such as contamination of other raw materials for evaporation due to gasification of organic materials, or loss of control due to uncontrollable film formation speed, and to provide a method that can stably adjust and control the deposition rate. A laser vapor deposition method and a laser vapor deposition device for an organic material with a film speed and an evaporation rate, in the method of carrying out laser vapor deposition of at least one organic material, it is characterized in that the duty ratio of the laser light that vaporizes the organic material is Make adjustments. In addition, it is characterized in that the above-mentioned duty ratio is adjusted based on the evaporation rate of the above-mentioned organic substance and the vapor pressure in the vacuum chamber for vapor deposition.

The invention relates to a scintillation screen structure for an X-ray radiation detector. The scintillation screen structure comprises a silicon substrate. A cesium iodide hybrid film is deposited on the silicon substrate through the laser evaporation process. The cesium iodide hybrid film is a cesium iodide thick film doped with thallium and boron. A transparent water blocking film is deposited on the cesium iodide thick film. The visible light transmittance of the transparent water blocking film is larger than or equal to 90%. The water vapor transmittance of the transparent water blocking film is smaller than or equal to 0.01g / m<-2>.day<-1>. The scintillation screen structure for the X-ray radiation detector is compact, even in component and good in cohesiveness with the substrate, and has good water blocking and waterproof performance.

This invention relates to a thermal super-conductive element based on nano material and preparing method thereof. Firstly high thermal conductivity nano composite metal powder, diamond powder or metal oxide, the grain size of which is 10-100 nm, are prepared, then are made to form a coating by plasma spraying technology, and then one of the metals is made to evaporate by laser evaporation technology to form an nano or sub-micro structure on the coating surface. The heat exchange element with thermal super-conductive characteristic made thereby has the advantages of high thermal conducting rate, low thermal resistance, long service life, high efficiency and compact structure.

The invention discloses a method for preparing nano-alloy droplets by laser irradiation, which belongs to the technical field of liquid metal, and comprises the following steps: S1, pre-dispersing the liquid metal, placing the pre-dispersed liquid metal in an organic solvent to obtain Liquid metal / organic solvent precursor; S2, introduce non-focused laser into the liquid metal / organic solvent precursor prepared in S1, and conduct laser radiation evaporation under agitation; S3, system after laser evaporation to S2 under agitation Into a mixed gas containing oxygen to promote the generation of the passivation layer; S4, after the passivation layer is generated, concentrate or separate to make nano-alloy droplets; the nano-droplets prepared by the preparation method provided by the invention are uniform in composition, The size structure is controllable, and the surface is highly modifiable without ligands, which provides a method for preparing basic materials for applications in the fields of flexible electronics, photocatalysis, and nanomedicine.