202 results about "Silver film" patented technology

The invention discloses tempered low-emissivity coated glass, which comprises a tempered glass substrate and a composite metal film layer laminated on the substrate, and is tempered coated glass with three metal silver film layers. After a common glass substrate is plated with a composite metal film layer, toughening treatment is carried out, and after toughening treatment, all the metal film layers reflect, interfere and refract light, so that the glass is light blue in the sun, and the decoration and energy-saving effects are good; the visible light transmittance is high, the outdoor visible light reflectivity is low, the solar energy transmittance is low, and the solar energy reflectivity is high; the prepared hollow glass has better energy-saving effects of light control, heat insulation, heat preservation and the like, enables buildings to be closer to nature, is used for near-zero-energy-consumption buildings, enables the buildings to meet the requirements of the national standard GB55015-2021 General Standard for Energy conservation and Renewable Energy Utilization of Building, and has great contribution and significance on carbon neutralization and carbon peak reaching of the buildings.

The invention discloses coated glass for near-zero energy consumption buildings, which comprises a glass substrate and a composite metal film layer laminated on the glass substrate, and is coated glass with three metal silver film layers. According to the invention, one of the multiple composite metal film layers on a common colorless transparent float glass substrate reflects and interferes with light, so that the coated glass is light green (French green) in the sun, and has good decoration and energy-saving effects; the hollow glass is high in visible light transmittance, low in outdoor visible light reflectivity, low in solar energy transmittance and high in solar energy reflectivity, and can be made into hollow glass to achieve better energy-saving effects such as light control, heat insulation and the like, so that a building is closer to the nature and is fused with the nature.

The invention discloses light blue low-radiation coated glass for near-zero energy consumption buildings and a preparation method of the light blue low-radiation coated glass, the light blue low-radiation coated glass comprises a glass substrate and a composite metal film layer laminated on the glass substrate, and the light blue low-radiation coated glass is coated glass with three metal silver film layers. According to the invention, one of the multiple composite metal film layers on the common colorless transparent float glass substrate reflects and interferes with light, so that the coated glass is light blue in the sun and has good decoration and energy-saving effects; the hollow glass is high in visible light transmittance, low in outdoor visible light reflectivity, low in solar energy transmittance and high in solar energy reflectivity, and can be made into hollow glass to achieve better energy-saving effects such as light control, heat insulation and the like, so that a building is closer to the nature and is fused with the nature.

The invention discloses light blue toughened glass, which comprises a toughened glass substrate and a composite metal film layer laminated on the substrate, and is toughened coated glass with three metal silver film layers. After a common glass substrate is plated with a composite metal film layer, toughening treatment is carried out, and after toughening treatment, the metal film layers reflect, interfere and refract light, so that the glass is light blue in the sun, is low-radiation coated toughened glass, and has good decoration and energy-saving effects; the visible light transmittance is high, the outdoor visible light reflectivity is low, the solar energy transmittance is low, and the solar energy reflectivity is high; the prepared hollow glass has better energy-saving effects of light control, heat insulation, heat preservation and the like, so that a building is closer to the nature, and the hollow glass is used for near-zero-energy-consumption buildings, so that the building meets the requirements of the national standard GB55015-2021 General Standard for Building Energy conservation and Renewable Energy Utilization.

The invention discloses low-radiation coated tempered glass, which comprises a tempered glass substrate and a composite metal film layer laminated on the substrate, and is tempered coated glass with three metal silver film layers. After a common glass substrate is plated with a composite metal film layer, toughening treatment is carried out, and after toughening treatment, the metal film layers reflect, interfere and refract light, so that the glass is light green (French green) in the sun, and the decoration and energy-saving effects are good; the visible light transmittance is high, the outdoor visible light reflectivity is low, the solar energy transmittance is low, and the solar energy reflectivity is high; the prepared hollow glass has better energy-saving effects of light control, heat insulation, heat preservation and the like, so that a building is closer to the nature, and the hollow glass is used for near-zero-energy-consumption buildings, so that the building meets the requirements of the national standard GB55015-2021 General Standard for Building Energy conservation and Renewable Energy Utilization.

The invention discloses blue low-radiation coated glass for near-zero energy consumption buildings, which comprises a glass substrate and a composite metal film layer laminated on the glass substrate, and is coated glass with three metal silver film layers. According to the invention, one of the multiple composite metal film layers on the common colorless transparent float glass substrate reflects and interferes with light, so that the coated glass is light blue in the sun and has good decoration and energy-saving effects; the hollow glass is high in visible light transmittance, low in outdoor visible light reflectivity, low in solar energy transmittance and high in solar energy reflectivity, and can be made into hollow glass to achieve better energy-saving effects such as light control, heat insulation and the like, so that a building is closer to the nature and is fused with the nature.

The invention discloses coated toughened glass, which comprises a toughened glass substrate and a composite metal film layer laminated on the substrate, and is coated toughened glass with three metal silver film layers. According to the invention, after a common glass substrate is plated with the composite metal film layers, toughening treatment is carried out, and after the toughening treatment, the metal film layers reflect, interfere and refract light, so that the glass is light gray in the sun, and the decoration and energy-saving effects are good; the visible light transmittance is high, the outdoor visible light reflectivity is low, the solar energy transmittance is low, and the solar energy reflectivity is high; the prepared hollow glass has better energy-saving effects of light control, heat insulation, heat preservation and the like, so that a building is closer to the nature, and the hollow glass is used for near-zero-energy-consumption buildings, so that the building meets the requirements of the national standard GB55015-2021 General Standard for Building Energy conservation and Renewable Energy Utilization.

The invention discloses a preparation method of light gray tempered low-emissivity coated glass. The preparation method comprises the following steps: sintering a target material, carrying out moisture removal and degassing pretreatment on glass, carrying out coating treatment and tempering treatment, and laminating a composite metal film layer on a tempered glass substrate to prepare the tempered coated glass with three metal silver film layers. According to the method, after the common glass substrate is plated with the composite metal film layers, toughening treatment is carried out, and after toughening treatment, the metal film layers reflect, interfere and refract light, so that the glass is light gray in the sun, and the decoration and energy-saving effects are good; the visible light transmittance is high, the outdoor visible light reflectivity is low, the solar energy transmittance is low, and the solar energy reflectivity is high; the prepared hollow glass has better energy-saving effects such as light control, heat insulation and heat preservation, enables buildings to be closer to the nature, is used for near-zero energy consumption buildings, and enables the buildings to meet the requirements of the national standard General Standard for Building Energy conservation and Renewable Energy Utilization.

The invention discloses a method for preparing low-radiation coated toughened glass, which comprises the following steps: sintering a target material, carrying out moisture removal and degassing pretreatment on glass, carrying out coating treatment and toughening treatment, and laminating a composite metal film layer on a toughened glass substrate to prepare light blue toughened coated glass with three metal silver film layers. According to the method, after a common glass substrate is plated with the composite metal film layers, toughening treatment is carried out, and after toughening treatment, the metal film layers reflect, interfere and refract light, so that the glass is light blue in the sun, and the decoration and energy-saving effects are good; the visible light transmittance is high, the outdoor visible light reflectivity is low, the solar energy transmittance is low, and the solar energy reflectivity is high; and the prepared hollow glass has better energy-saving effects such as light control, heat insulation and the like, so that a building is closer to nature.

The invention discloses a preparation method of tempered low-emissivity coated glass. The preparation method comprises the following steps: sintering a target material, carrying out moisture removal and degassing pretreatment on glass, carrying out coating treatment and tempering treatment, and laminating a composite metal film layer on a tempered glass substrate to prepare the tempered coated glass with three metal silver film layers. According to the method, after a common glass substrate is plated with the composite metal film layers, toughening treatment is carried out, and after toughening treatment, the metal film layers reflect, interfere and refract light, so that the glass is light blue in the sun, and the decoration and energy-saving effects are good; the visible light transmittance is high, the outdoor visible light reflectivity is low, the solar energy transmittance is low, and the solar energy reflectivity is high; the prepared hollow glass has better energy-saving effects of light control, heat insulation, heat preservation and the like, enables buildings to be closer to nature, is used for near-zero-energy-consumption buildings, enables the buildings to meet the requirements of the national standard General Standard for Energy conservation and Renewable Energy Utilization of Building, and has great contribution and significance on carbon neutralization and carbon peak reaching of the buildings.

The invention relates to an optical fiber hydrogen sensor based on a silver film-nanowire hole array structure and a preparation method thereof in the field of photochemical sensors. The optical fiber hydrogen sensor comprises a multimode optical fiber, and a sensing area is formed on the multimode optical fiber; the sensing area is formed by stripping a coating layer with a preset length from the multimode optical fiber, thinning the optical fiber in the area, plating a silver film on the surface of the thinned optical fiber, and adsorbing a nanowire hole array structure which is sequentially and vertically arranged on the surface of the silver film in a liquid level self-assembly manner; the nanowire hole array is of a metal-medium-metal (MIM) structure, a gold-palladium nanowire array is arranged at the bottom, an intermediate medium layer is made of aluminum oxide, and a silver film with a hole array in any shape is arranged at the top. When light is transmitted to a sensing area from a fiber core of the multimode optical fiber, the light and a metal silver film can excite a surface plasmon resonance (SPR) effect, meanwhile, an MIM structure formed by a gold-palladium nanowire, an aluminum oxide dielectric layer and a porous silver film serves as an optical coupling antenna through a local surface plasmon resonance (LSPR) effect at the edge of a top hole, and the optical coupling antenna is used for transmitting the light to the sensing area. Light energy is efficiently converged and excited in an extremely bound gap plasmon (Gap Plasmon) in an aluminum oxide dielectric layer, so that far-unconventional electromagnetic field enhancement is generated in a sensing core area, and the sensitivity of the sensor is greatly improved.

The present application discloses a power module, a power circuit and a chip, wherein the power module includes a first metal-clad substrate and a second metal-clad substrate arranged relatively to each other, a chip and an interconnection column located between the first metal-clad substrate and the second metal-clad substrate; the chip and the first metal-clad substrate are electrically connected by pressure sintering using a sintered material, which can improve the bonding reliability, and the chip is electrically connected to the second metal-clad substrate through the interconnection column. Since substrates are arranged on both sides of the chip, the heat generated inside the power module can be discharged from the direction of the two substrates, thereby improving the heat dissipation performance of the power module. In addition, the sintered material formed by silver paste, copper paste or silver film has the advantages of low sintering temperature, high melting point and high thermal conductivity, so it can further improve the heat dissipation performance of the power module, thereby improving the power density of the power module.

A periscopic camera module disclosed by the present invention comprises a lens assembly, a motor assembly and an imaging module, the imaging module comprises an optical filter, a photosensitive chip and a circuit board, the periscopic camera module is characterized in that the periscopic camera module further comprises a reflector, the reflector is obliquely arranged behind the lens assembly, and a first preset angle is formed between the reflector and the optical axis of the lens; the imaging module is arranged in the reflecting light path direction of the reflecting mirror, the reflecting mirror comprises a substrate and a reflecting layer on the surface of the substrate, the reflecting layer can be configured to be a film coating medium, the film coating medium is an aluminum film or a silver film, the reflectivity of the film coating medium is larger than 95%, and the reflection bandwidth is the wavelength of 420-680 nm. According to the periscopic camera module provided by the invention, a prism can be replaced by the reflecting mirror, so that the module cost is reduced, and meanwhile, the effect of reducing the thickness of the module is achieved by utilizing the special angle arrangement of the reflecting mirror and the photosensitive chip.

The invention belongs to the technical field of optical fiber sensing, and particularly relates to a photonic crystal optical fiber sensor which is characterized in that a cladding material is silicon dioxide, a to-be-detected solution channel is formed in the cladding of an optical fiber, and a first inner-layer air hole and a second inner-layer air hole are formed outside the to-be-detected solution channel; the inner wall of the second inner layer air hole in the X-axis positive half axis direction is plated with a silver film, a plurality of outer layer air holes are formed in the outer portion of the second inner layer air hole, every two outer layer air holes form a group, and each group of air holes are evenly distributed in the circumferential direction. The aperture of the outer-layer air holes is larger than that of the first inner-layer air holes and that of the second inner-layer air holes; the number of the first inner layer air holes is 16, and the diameter of the first inner layer air holes is 1.5 mm; the number of the second inner layer air holes is 24, and the diameter of the second inner layer air holes is 1.5 mm. The number of the outer layer air holes is 16, and the diameter of the outer layer air holes is 2.5 mm. The diameter of the to-be-detected solution channel is 7.3 mm; and the thickness of the silver film is 40nm.

The invention discloses a polarization converter and a preparation method thereof. The polarization converter comprises a silicon dioxide substrate, a silicon core waveguide, a zinc oxide supporting layer, an asymmetric silver layer and a silicon dioxide substrate, the silicon core waveguide and the zinc oxide supporting layer are attached to the silicon dioxide substrate to form a substrate structure; the asymmetric silver layer is attached to the silicon dioxide substrate to form a silver film structure; the silver film structure is connected with the substrate structure through the zinc oxide supporting layer, and the asymmetric silver layer is located over the silicon core waveguide and does not make contact with the silicon core waveguide. Through a non-contact structure of the asymmetric silver layer and the silicon core waveguide, air is introduced as a low-refractive-index medium to construct a hollow mixed plasmon waveguide structure, so that the transmission loss is effectively reduced, and meanwhile, based on introduction of the asymmetric silver layer, the high integration level and the high conversion rate of the polarization converter are effectively guaranteed.

The invention discloses a preparation method of an integrated collector plate for a vanadium battery. The preparation method comprises the following steps: preparing foamed nickel deposited by carbon nanotubes; pressing the conductive particles into sheets, sequentially putting the conductive sheets, the modified foamed nickel and the conductive sheets into a mold, and integrally forming by using a hot press to obtain the composite bipolar plate. Silver-copper composite powder is prepared by plating silver on the surface of copper powder through chemical plating, conductive adhesive containing silver-copper metal powder is prepared, and a copper plate and a composite bipolar plate are bonded through the conductive adhesive to prepare the integrated collector plate. The foamed nickel is used as a framework material, the interface between the foamed nickel and the carbon composite layer is improved by depositing the carbon nanotubes on the surface of the foamed nickel, the mechanical strength and the conductivity of the composite bipolar plate are improved, nano-scale silver particles on the surface of the copper powder can be melted by performing heat treatment on the silver-copper composite powder, a continuous silver film is formed, and the conductivity of the composite bipolar plate is improved. The conductivity and oxidation resistance of the conductive adhesive are improved, and the contact resistance between the bipolar plate and a copper plate is reduced, so that the performance of the flow battery is improved.

The invention discloses a high-sensitivity SPR refractive index sensor with a sawtooth structure and a graphene-silver layer, and belongs to the technical field of sensors. A smooth prism surface is etched into a sawtooth shape, metal silver-two-dimensional nano material graphene is used as a plasma material to form silver layer-graphene, the plasma material contains silver, a silver film is covered with graphene, and the prism is etched into a sawtooth shape by optimizing the thickness of a sawtooth silver layer and the number of layers of black phosphorus. The thickness of a silver layer, the height of sawteeth and the number of layers of graphene are adjusted through the composite film plated with silver-graphene, and the prism with the sawteeth structure and the metal and two-dimensional nanometer material are provided. The average angle sensitivity of the sensor disclosed by the invention can reach 860.6 degrees / RIU in a refractive index range from 1.330 RIU to 1.335 RIU. Compared with a prism type surface plasmon resonance refractive index sensor reported in the past, the surface plasmon resonance refractive index sensor has higher angle sensitivity.

The invention discloses an optical fiber sensor and a preparation method thereof, and belongs to the technical field of optical fiber sensing, and the optical fiber sensor comprises an optical fiber body adopting a splicing structure of a single-mode optical fiber, a tapering coreless optical fiber and a single-mode optical fiber; the cascaded F-P structure comprises a sensing cavity and a reference cavity which are arranged on the tapering coreless optical fiber; the metal enhancement layer comprises a silver film and a gold nanorod array which are sequentially arranged on the surface of the tapering coreless optical fiber, the thickness of the silver film is 30-50 nm, the length-diameter ratio of gold nanorods is 3: 1-5: 1, and the diameter of the gold nanorods is 40-60 nm; the sensitive material coating comprises a polydimethylsiloxane (PDMS) film coated on the surface of the sensing cavity and a polyvinyl alcohol (PVA) film coated on the surface of the gold nanorod array, the thickness of the PDMS film is 3-7 microns, and the concentration of the PVA film is 2-4 wt%; according to the optical fiber sensor and the preparation method thereof provided by the invention, a synergistically enhanced sensing system is formed, and high sensitivity, amplification and multi-parameter detection capability are considered at the same time.

The invention discloses a metasurface based on a nano resonator and a design method for realizing wavelength classification deflection. The metasurface is formed by periodically arranging three unit silicon nano resonators, wherein the widths of middle layers of the unit silicon nano resonators change in a gradient mode along the x axis, and the metasurface is of the sub-wavelength scale. The substrate of the unit resonator is a silver substrate, the surface of the silver substrate is provided with a silicon nanometer strip, and the top of the silicon nanometer strip and the top of the silver substrate are respectively deposited and covered with a layer of silver film; by adjusting the thickness of the middle silicon layer of the resonator, the working wavelength of a near-infrared band can be regulated and controlled, normal incident y polarized light with a specific wavelength is deflected to a diffraction order, light with other wavelengths is vertically reflected, and meanwhile, a phase modulation function is achieved. The device has the remarkable advantages of simple structure and convenience in preparation, has the advantages of high throughput and large-area preparation, and has important application prospects in new technologies such as optical imaging, spectrum detection and machine vision.

The invention provides a probe type optical fiber SPR (Surface Plasmon Resonance) sensor system based on a microsphere structure. The probe type optical fiber SPR sensor is characterized in that the probe type optical fiber SPR sensor is composed of a broadband light source, a spectrograph, a broadband circulator and a microballoon structure probe type optical fiber SPR sensor, the microballoon structure probe type optical fiber SPR sensor is formed by welding a multimode optical fiber with a section of single-mode optical fiber, and the single-mode optical fiber at the welding position of the multimode optical fiber and the single-mode optical fiber is prepared into the microballoon structure; the nano-silver film is deposited on the surface of the single-mode optical fiber, the polydimethylsiloxane film and the polyvinyl alcohol film are coated section by section along the outer surface of the nano-silver film, and the nano-gold film is plated on the end face of the tail end, so that the temperature parameter and the humidity parameter can be simultaneously measured in various sensing application scenes. The device is simple in structure, flexible and compact, and can be widely applied to the optical fiber sensing application fields of chemistry, biology, medicine, life science and the like.

The invention provides a textile fabric and a preparation method thereof, and belongs to the technical field of textile materials. Polyester fibers and cotton fibers are selected as base materials, the polyester fibers are treated by sodium dodecyl benzene sulfonate and phosphoric acid to form an activation layer and a phosphate group on the surface, polarity and adsorption capacity are enhanced, then a metal silver film is deposited in a silver-ammonia solution, and the silver film is modified by beta-cyclodextrin, so that the metal silver film is formed. The hydrophilicity, the oxidation resistance and the functionalization capability are improved; the cotton fibers are pre-treated by hydrochloric acid to enhance the combination with the aniline monomer, and a conductive polyaniline coating is formed through chemical oxidation polymerization; in addition, graphene and carbon nanotubes are added to construct a multi-dimensional conductive network, uniform dispersion is realized through polyvinylpyrrolidone and sodium dodecyl benzene sulfonate dispersing agents, and the bonding strength is improved through glutaraldehyde crosslinking; the modification synergistic effect of the two fibers improves the conductivity and mechanical properties of the composite material.

The invention discloses a surface plasmon resonance (SPR) hydrogen sensor based on an Ag / PDMS / Pt-WO3 multilayer structure. The SPR hydrogen sensor is characterized by comprising a halogen lamp light source, two sections of multimode optical fibers, a spectrometer and an SPR hydrogen sensing head, wherein the SPR hydrogen sensing head is composed of a different-core structure formed by multimode-single-mode-multimode optical fibers, a silver film, PDMS (polydimethylsiloxane) and Pt-WO3 (platinum-tungsten trioxide). The SPR hydrogen sensor based on the Ag / PDMS / Pt-WO3 multi-layer structure, which is simple to prepare, high in sensitivity and capable of being repeatedly used for a long time, is provided aiming at the defects that an existing optical fiber SPR hydrogen sensor is low in sensitivity and complex in device manufacturing, and PdH is changed from an alpha phase to a beta phase when Pd is used as a hydrogen sensitive material, so that the use of the device is influenced, and the like. When the hydrogen concentration is increased, the Pt-WO3 reacts with the hydrogen to generate heat, so that the refractive index of the PDMS film is changed, the SPR resonance spectrum is moved, and the hydrogen concentration is obtained by observing the offset of the PDMS film. The high refractive index sensitivity of SPR is brought into full play by utilizing the high refractive index change of PDMS, so that high-precision detection of hydrogen leakage is realized.

This invention belongs to the field of thermoelectric thin film technology, specifically relating to the preparation of a high-density domain-structured flexible silver telluride thin film and its reversible thermoelectric performance control method. The film possesses a high-density strip-like domain structure with numerous twins and stacking faults. The high-density domain boundaries provide a large number of ultra-highly active sites, allowing for wide-range reversible control of thermoelectric performance through simple post-processing methods, such as oxidation annealing, chemical and physical deposition of nano-metal particles. The high-density domain-structured silver telluride thin film prepared by this invention uses a silver film prepared by magnetron sputtering as a precursor, reacting it with tellurium vapor in a tube furnace to generate a dense thin film. The preparation method is simple, low-cost, highly reproducible, and operates at a low reaction temperature, making it suitable for large-scale preparation and compatible with flexible substrates such as polyimide. The high thermoelectric performance and reversible control characteristics of this film are of great significance for applications in high-performance flexible thermoelectric generators and multifunctional sensors.

The application discloses a kind of hypersensitive coupling bionic strain sensors and preparation method thereof, belong to the field of strain sensor.The specific method is through coupling bionic arthropod crack receptor and helical growth divergent law of sunflower seed, design coupling bionic strain sensor structure, prepare flexible elastic substrate with micro-nano coupling bionic crack array using replication transfer method, and carry out ion sputtering and plate a layer of nano silver film, obtain the resistance layer deposited on flexible elastic substrate and micro-nano coupling bionic crack array.Finally, copper wire electrode is packaged on the surface of resistance layer, and a kind of coupling bionic strain sensor is obtained, which not only has ultrahigh sensitivity, but also good durability, rapid response time and recovery time, simple structure, and excellent performance in all aspects.

The purpose of the present invention is to prevent a decrease in light reflection characteristic and an increase in electric resistance due to oxidation of silver in a semiconductor device including an optical sensor in which silver is used for an anode of a photoconductive film. The present invention has a following structure to solve the problem: A semiconductor device includes a thin film transistor formed on a substrate 100. An electrode connected electrically to the thin film transistor is formed of a silver film 128. A first indium tin oxide (ITO) film 129 is formed on the silver film 128. An alumina (AlOx) film 130 is formed on the first ITO film 129.

A method for manufacturing a combined sintered-prepared silver film and a carrier (1), a) a step of creating a carrier (2) including a designed opening (5); b) a step of casting a silver film layer (7) into the designed opening (5), for example, a step of casting a silver paste; and c) a method comprising the step of drying the carrier (2) and the silver film layer (7) to form a combined sintered-prepared silver film and carrier (1). The carrier (2) may comprise a plastic carrier, which may be produced by permanently bonding two plastic films using a plasma bonding process or using a temperature-stable adhesive. The carrier (2) may comprise a stencil layer (3) and a backing layer (4). The stencil layer (3) may define a designed opening (5). The backing layer (4) may be configured to seal the bottom of the designed opening (5), wherein, at the beginning of step b), the top of the designed opening (5) may be open to receive a cast silver film layer (7). The combined sintered-prepared silver for the substrate (10) a) a step of positioning a combined sintered-prepared silver film and carrier (1) of the type comprising a carrier (2) including a designed opening (5) and a silver film layer (7) cast into the designed opening (5) on the upper surface of a substrate (10) such that the silver film layer (7) faces downward; b) a step of transferring a silver film layer (7) onto a substrate (10) by lamination; c) a step of removing the carrier (2) of the combined sintered-prepared silver film and the carrier (1); d) a step of forming an assembly by placing the component (22) on the substrate (10) so as to be in contact with the transferred silver film layer (7); and e) includes the step of sintering the assembly to create a silver bond between the component (22) and the substrate (10). In step b) of the method of assembling the component (22) to the substrate (10), lamination is performed using a lamination press (11+12) at a pressure of 3 to 8 MPa, optionally 3 to 6 MPa, optionally 8 MPa, and a temperature of 130 to 150°C, optionally 130°C. In step e) of this method, sintering is performed at a pressure of 10 MPa and a temperature of 250°C.

The invention relates to a transparent electrode for a deep ultraviolet LED and a preparation method thereof. The method comprises the following steps: depositing a silver film on a deep ultraviolet LED epitaxial structure; spin-coating a carbon nanotube suspension on the silver film; performing a first rapid annealing in an inert atmosphere after drying to form a silver / carbon nanotube composite structure consisting of carbon nanotubes and silver nanospheres attached to the carbon nanotube walls; depositing an aluminum oxide film layer on the silver / carbon nanotube composite structure; and performing a second rapid annealing in an inert atmosphere to form a transparent electrode of the silver / carbon nanotube / aluminum oxide composite structure. The transparent electrode has strong bonding strength and mechanical strength, and has good light transmittance and electrical conductivity.

The invention discloses a high-sensitivity photonic crystal fiber double-parameter sensor based on SPR effect, which comprises a substrate, a fiber core and a cladding are arranged on the substrate, two sides of the cladding are symmetrically and laterally polished to respectively form an upper polishing surface and a lower polishing surface, a plasmon material layer and a titanium dioxide layer are sequentially arranged on the upper polishing surface, and a high-sensitivity photonic crystal fiber is arranged on the lower polishing surface. A silver film layer is arranged on the lower polishing surface; a core air hole is formed in the center of the substrate, and outer-layer air holes which are arranged in a hexagonal structure by taking the core air hole as the center, middle-layer air holes which are arranged in a hexagonal structure by taking the core air hole as the center and inner-layer air holes which are arranged in a straight line are sequentially formed in the cladding outside the core air hole from outside to inside. According to the sensor disclosed by the invention, the air holes are specially arranged, so that the refractive index and the temperature can be synchronously detected, and the sensor has relatively high maximum wavelength sensitivity and quality factor.

The invention discloses antibacterial titanium dioxide with high temperature resistance and a preparation method. The titanium dioxide comprises a titanium dioxide base material, an inorganic coating layer coating the surface of the titanium dioxide base material and an organic coating layer coating the surface of the inorganic coating layer, the inorganic coating layer comprises a nano-silver film layer; the organic coating layer is a coating layer formed by introducing Ti-S bonds. The titanium dioxide is subjected to inorganic coating and organic modification treatment in sequence. A high-dispersion nano-silver film layer and a Ti-S bond are introduced, so that the titanium dioxide has excellent antibacterial property and temperature resistance, and the use requirements of the plastic industry are met.

Provided is a composition, including: (A) a compound represented by the following general formula (1); (B) a compound represented by the following general formula (2); and (C) a silver compound:where R1 and R2 each independently represent a hydrogen atom or an alkyl group having 1 to 5 carbon atoms;where R3 and R4 each independently represent a hydrogen atom, a sodium atom, a potassium atom, or an alkyl group having 1 to 5 carbon atoms, and “n” represents 1 or 2.