339 results about "Silver mirror" patented technology

A device for combining tomographic images with human vision using a half-silvered mirror to merge the visual outer surface of an object (or a robotic mock effector) with a simultaneous reflection of a tomographic image from the interior of the object. The device maybe used with various types of image modalities including ultrasound, CT, and MRI. The image capture device and the display may or may not be fixed to the semi-transparent mirror. If not fixed, the imaging device may provide a compensation device that adjusts the reflection of the displayed ultrasound on the half-silvered mirror to account for any change in the image capture device orientation or location.

The invention provides nanometer spray plating for a silver mirror, namely obtain a high glaze metal mirror face by adopting coating technique, which is similar to the brand new decorative effect of plating. The whole technique consists of a paint bottom layer, a metal reflecting layer (spray plating layer) and a paint surface layer. The coating has excellent adhesive attraction, shock resistance, corrosion resistance, weather resistance and marresistance, has rich colors and is bright like a mirror. The nanometer spray plating can be used to various materials such as metal, resin, ABS, PC, PP+PS carbon element resin, plastic, glass, pottery and porcelain, acrylic, wood, plastic wood and calcium plastic.

A durable highly reflective silver mirror characterized by high reflectance in a broad spectral range of about 300 nm in the UV to the far infrared (˜10000 nm), as well as exceptional environmental durability. A high absorptivity metal underlayer is used which prevents the formation of a galvanic cell with a silver layer while increasing the reflectance of the silver layer. Environmentally durable overcoat layers are provided to enhance mechanical and chemical durability and protect the silver layer from corrosion and tarnishing, for use in a wide variety of surroundings or climates, including harsh or extreme environments.

The invention relates to a surface reinforced scattering active base in the filed of laser spectrum measurement, which comprises glass substrate with mercapto treatment on the surface which deposits Ag nanometer modification inlay by silver mirror reaction. The process for preparing the base comprises substrate-hydroxylating treatment; substrate mercapto treatment and substrate surface Ag nanometer modification inlay formation.

The invention discloses a preparation method of a hydrophobic light trapping structure on silicon surface, belonging to the technical field of the solar cell. The method adopts the silicon wafer (100) or (111) and comprises the following steps: using hot sodium hypochlorite solution and HF to clean and obtain a clean silicon surface; corroding single crystal silicon with alkaline corrosive agent to form the texture with pyramid-shaped surface, or performing catalytic etching with precious metal nanoparticles, namely plating silver on the surface of the silicon wafer through the silver mirror reaction and soaking the silicon wafer plated with silver in acidic corrosive agent; and obtaining the light trapping structure of the antireflection layer. By adopting the light trapping structure, the emissivity can be reduced to 5% in the visible wave band from 380nm to 780nm. By adopting the method of the invention, the technological process of the precious metal nanoparticle plating can be simplified, the characteristics of normal-temperature wet etching can be maintained and the silicon surface can have higher antireflection effect. In addition, the contact angle of the surface of the silicon wafer (100) is up to 110 degrees, the silicon wafer has super hydrophobicity and the new technical means is provided for increasing the efficiencies of the silicon and silicon film solar cells.

An environmentally stable silver containing mirror having very high reflection values over a large spectral range comprises a silver containing layer disposed on a substrate, which is covered by a zinc sulfide layer. So that the sulfur being set free during the application or during the vaporization of the zinc sulfide to be applied, does not attack the silver, at least one barrier or intermediate layer is placed between the silver containing layer and the zinc sulfide layer.

The invention relates to mirror back paint resin and curtain flow coating. Its features are that the resin solid component includes 50-70% medium oil length alkyd resin, 20-40% multi-hydroxy acrylic acid resin, and 10-20% polyurethane resin; middle resin is formed by medium oil length alkyd resin, acrylamide, ethoxyl methacrylate, and butyl methacrylate monomer; the mirror back paint resin is formed by the middle resin and toluene diisocynate. Its viscosity is 100-300s; acid value is under 5mgKOH/g. The coating is formed by the resin, proper cross-linking resin, pigment, extender pigment, auxiliary agent, and solvent has low curing temperature, high-speed, high hardness of paint film, good flexibility, adhesive force, and chemical resistance. It can be applied to our country silver mirror production line to ensure the product quality.

The invention relates to a preparation method of magnetic composite catalyst Ag / HNTs / Fe3O4, and belongs to the technical field of environmental function material preparation; a simple and effective chemical reduction method is used to prepare a Fe3O4 / Halloysite Nanotubes (HNTs / Fe3O4) magnetic composite material, then a silver nitrate solution and ammonia are mixed into a fresh silver ammonia solution as an oxidizing agent, glucose is used as a reducing agent, Ag nanoparticles are deposited on the magnetic composite material by a silver mirror reaction to prepare the magnetic composite catalyst Ag / HNTs / Fe3O4, and the magnetic composite catalyst Ag / HNTs / Fe3O4 is used for catalytic degradation of p-nitrophenol in a water solution.

The invention discloses a method for preparing two-dimensional silver nanosheets of different shapes. Firstly, a silver mirror reaction is adopted, glucose serves as a reducing agent, a quantitative silver-ammonia solution and the quantitative glucose solution are sequentially added into a beaker to be mixed, then cetyl trimethyl ammonium bromide serves as a surface active agent, the cetyl trimethyl ammonium bromide solution is added into the mixed solution, then high-temperature reaction is carried out on the mixed solution, and a solution of the two-dimensional silver nanosheets of the different shapes is prepared by adjusting the concentration ratio of the cetyl trimethyl ammonium bromide solution and the silver-ammonia solution. The method has the advantages that operation is easy, cost is low, equipment is simple, and the prepared silver nanosheets are uniform in grain size, good in water solubility and free of obvious gathering.

The invention relates to process for preparing sliver-nanometer anti-bacteria material. The process comprises that an aluminum ion membrane is prepared on the surface of a substrate which is subsequently soaked into silver mirror reaction liquid, and then the substrate is taken out. The scheme employs that the aluminum ion membrane is prepared on the surface of the substrate, which enables the substrate to be covered with aluminum ion, and silver mirror reaction liquid is employed to produce aluminum hydroxide in ammoniated silver solution, which changes the growth velocity of different crystal surfaces of the silver, thereby inducing the growing of flaky silver nanometer slice structure, accomplishing the preparation of silver nanometer slice in a short time, and simplifying the industrial art. As the longer nanometer slice has growth vantage, the achieved nanometer slice structure is enabled to be preserved, thereby guaranteeing the regulation of the silver nanometer structure in silver nanometer anti-bacteria materials.

The invention discloses a method and a device for uniformly cladding metallic silver on the surface of a carbon nano tube. The method comprises the steps of preprocessing the carbon nano tube, preparing a silver-ammonia solution and a chemical plating solution, and adopting the device provided by the invention to carry out chemical plating, wherein the device comprises a vacuum pump, a collection bottle, a quartz tube, an ultrasonic atomizer, a microwave-assisted heater, a microwave leakage prevention device and a carrier gas conveyor device; carrying out ultrasonic atomization on the two solutions, contacting and mixing the two atomized matters to react, repetitively washing powder to be neutral, and drying to obtain the carbon nano tube with the surface uniformly cladded by the metallic silver. The carbon nano tube is dispersed in spray droplets, so that the dispersibility of the carbon nano tube and silver plating is improved, the phenomenon of self-decomposition of the solution in a conventional chemical plating method, the generation of large-particle monomer silver and the occurrence of silver mirror reaction are avoided, the prepared cladding layer is uniform, and the sliver particle size is nano-scaled; the whole process is simple, the device is simple and convenient, convenient to operate, and energy-saving and environmental-friendly, and mass production can be realized.

In forming a thin film of silver mirror on a surface of an object to be coated, a silver mirror reaction-treating solution including three solutions: an ammoniacal silver salt aqueous solution (I), an aqueous solution of caustic soda (IIa) and an aqueous solution of a carbohydrate-based reducing agent (IIb) such as glucose (fructose) are used. Immediately after the caustic soda aqueous solution (IIa) and the reducing agent aqueous solution (IIb) are mixed, the resulting mixed liquid and the ammoniacal silver salt aqueous solution (I) are independently and simultaneously sprayed onto the object. Alternatively, the mixed liquid (II) and the ammoniacal silver salt aqueous solution (I) are mixed together immediately upstream of a spraying nozzle, and the mixed liquid (III) is sprayed onto the object. Thereby, a thin film of silver mirror is formed in a thickness of around 0.01 to 0.03 μm, for example, through depositing silver by a silver mirror reaction.

A key sheet and a key top of novel design such that a character or a symbol cannot be recognized visually when not illuminated and can be recognized visually only when illuminated. In the key sheet comprising a key top for pressing a key and a key pad on which a plurality of key tops are placed in a matrix and which supports them integrally through transparent adhesive, the key top is composed of a transparent material, e.g. resin or glass, and provided with a metal thin film (half-silvered mirror) on the upper or lower surfaces. Consequently, a character or a symbol cannot be recognized visually when not illuminated and can be recognized visually only when illuminated.

The invention relates to a system for measuring surface bidirectional reflectance distribution. The system is characterized in that a hemi-parabolic reflector is arranged on the surface of a sample to be measured; a light source system is arranged on one side of a main shaft in the center of the hemi-parabolic reflector, and is opposite to the inner parabolic surface; an imaging system is arranged on a shaft which is intersected with and vertical to the main shaft, and is positioned above a plain shaft; a beam splitter is arranged between the light source system and the hemi-parabolic reflector; the mirror surface of the beam splitter forms a 45-degree angle with the plain shaft; the light source system consists of a light source, a semicircular light source seat and a sliding rail; the radius of the sliding rail is twice of focal distance of a parabolic reflector, and is embedded in the upper edge of the semicircular light source seat; the light source is arranged on the semicircle sliding rail; the plain shaft is parallel to the main shaft; the beam splitter is a half-silvered mirror; the inner surface of the hemi-parabolic reflector is a reflecting coating; and the caliber of the parabolic surface is more than fourfold focal distance. The system can complete measurement of surface bidirectional reflectance distribution in short time, and has smaller repeatability error.

The present invention provides an optical device structure unit of visible light wave band transform and an optical device. The optical device structure unit of visible light wave band transform comprises an antenna formed by a TiO2 material, a silver mirror, and a silicon dioxide substrate, wherein an antenna structure is at a top layer, the silver mirror is in the middle, and a silicon dioxide substrate material is at the bottom, the width size a of the antenna is between 160nm and 180nm, the length size b of the antenna is between the 240nm and 370nm, the lengths and widths of the silver mirror and the silicon dioxide substrate are the same and are recorded as P, a period P=430+/-10nm, the thickness t1 of the antenna structure is 240+/-5nm, and the solver layer thickness t2 of the silver mirror is 300+/-20nm. According to the optical device, a TiO2 nano antenna is used as the basic structure unit, a metasurface sub unit perfectly realizes beam abnormal reflection at the wavelength of 632nm, and the formed optical device has a high abnormal reflection conversion efficiency.

The invention discloses a preparation method of a starch/nano-silver antibacterial composite film, belonging to the field of functional high molecular material science. In the composite film, starch is taken as a major raw material; by degrading and oxidizing the starch, the molecular weight of the starch is reduced, an active functional group of the starch is modified, and a low-molecular-weightstarch solution containing a reduced group is prepared; the starch film is prepared in the solution in a self-assembly way; and the starch/nano-silver antibacterial composite film is prepared by soaking the starch self-assembly film into a silver ammonia solution according to a silver mirror reacting principle. The composite film has high biocompatibility and antisepsis and sterilization properties, and is environmentally-friendly; starch is taken as a major raw material of the composite film, so that the source is rich, the price is low, and the composite film has a wide application prospecton the aspect of medical antibacterial materials; and meanwhile, a preparation process of the composite film is simple, and has low equipment requirements.

The invention discloses a weather-resistant silver mirror which is particularly suitable for trough solar thermal power generation and a preparation method thereof. The silver mirror orderly consists of a transparent substrate, a first Al2O3 adhesive layer, an Ag reflective layer, a second Al2O3 adhesive protective layer and a SiOx protective layer. The preparation method thereof comprises the step of orderly and respectively plating the first Al2O3 adhesive layer, the Ag reflective layer, the second Al2O3 adhesive protective layer and the SiOx protective layer by adopting a multi-target intermediate frequency response vertical magnetic control sputter to prepare the weather-resistant silver mirror of the invention. The finished product of the weather-resistant silver mirror of the invention has the characteristics of high reflectivity, reliable work, long service life and the like. The preparation method of the invention has the characteristics of advance, reasonability, low cost, low energy consumption, good quality of the finished product and the like.

The invention provides a planar lens unit based on dielectric material, a planar lens and a preparation method. The unit comprises an antenna made of dielectric material with high refractivity, a silica filling layer, a silver mirror and a silica substrate. The planar lens comprises the planar lens units distributed about the center, and the antennas of the planar lens units are distributed on the axis X regularly and are distributed symmetric about the axis y when y equals to zero. The method includes firstly, covering the silica substrate with a layer of silver film, and covering the surface of the silver film with the filling layer of silica and a silicon film through electron beam vapor deposition continuously; secondly, coating the silicon film with photoresist, and completing the etching and developing of the photoresist by the electron beam exposure technology; thirdly, etching the silicon film by the reactive ion beam etching technology; fourthly, performing peeling to obtain the finished nano silicon antenna. Thus, the focusing efficiency can be improved by one order of magnitude, and the high practical application value is provided.

The invention relates to a frequency-beating device for laser frequency measurement, which belongs to the technical field of photoelectrons and comprises a first collimation positioning aperture diaphragm, a second collimation positioning aperture diaphragm, a third collimation positioning aperture diaphragm, a fourth collimation positioning aperture diaphragm, a fifth collimation positioning aperture diaphragm, a sixth collimation positioning aperture diaphragm, a seventh collimation positioning aperture diaphragm, an eighth collimation positioning aperture diaphragm, a first totally-reflecting mirror, a second totally-reflecting mirror, a third totally-reflecting mirror, a fourth totally-reflecting mirror, a first half-wave plate, a second half-wave plate, a polarization light-splittingprism, a Glan prism, a raster, a silver mirror, a ninth adjustable-aperture aperture diaphragm, a gathering lens, an avalanche diode, a low-noise amplifier, a band-pass filter, a one-dimensional mobile platform and a vibration isolation optical panel. The frequency-beating device disclosed by the invention is easy to regulate and maintain a frequency-beating optical path, and can achieve the purpose of improving a signal to noise ratio of a frequency-beating signal so as to be convenient for reading by using a frequency counter and keeping the high signal to noise ratio frequency-beating signal for a long time.