24results about How to "High refractive index" patented technology

A light guide member of a waveguide structure of an image display device for guiding image light incident from a display and emitting the image light toward an eye of a user, characterized by being formed of a single crystal composed of lithium niobate. According to the present invention, a light guide member having a high refractive index and a high internal transmittance can be provided.

The application discloses a 750-850nm waveband photonic crystal surface emitting laser and a preparation method, and belongs to the field of semiconductor lasers. The application is divided into surface etching and buried photonic crystal layer structures, uses n-GaAs as a substrate, combines surface etching or buried photonic crystal structures, uses amorphous silicon, titanium oxide, GaP or AlGaAs as main materials of a resonant cavity, utilizes large-area in-plane resonance and high coupling with a quantum well active layer, realizes low-loss resonance and optical gain, and realizes a 750-850nm waveband semiconductor laser with high light beam quality, high power and surface emission.

The application discloses a maleimide-based self-initiating two-photon photoresist and a patterning method thereof. The maleimide-based self-initiating two-photon photoresist contains 100 parts of a maleimide compound, 10-30 parts of a polycyclopentenyl acrylate and 20-50 parts of a high-refractive fluorene-based active crosslinking agent. The maleimide-based self-initiating two-photon photoresist avoids the use of conventional two-photon initiators, thereby avoiding the migration and penetration of the residual photo-initiator and photolysis fragments in the common photoresist and the possibility of further photochemical reactions; the oxygen-blocking effect of the polycyclopentenyl acrylate can ensure the normal use of the photoresist in air; and the high-refractive fluorene-based active crosslinking agent can effectively adjust the refractive index of the photoresist to improve the writing effect. After the photoresist is written by a femtosecond laser and developed, two-dimensional lines with a feature size of hundreds of nanometers can be obtained, and three-dimensional structures with a size of hundreds of micrometers can also be written.

This invention relates to the field of micro / nano manufacturing technology, and in particular to a high-refractive-index fluidized nanoparticle, a hybrid photoresist, a patterned coating, and methods for preparing the respective. The high-refractive-index fluidized nanoparticle comprises a core, the core being modified with a first ligand and a second ligand; the first ligand is one or more selected from methacrylic acid, 4-pentenoic acid, methacryloxypropyltrimethoxysilane, and sodium methacrylate sulfonate; the second ligand is one or more selected from piperidine, N,N-diisopropylethylamine, 1,5,7-triazabicyclo[4.4.0]decene-5-ene, tetramethylguanidine, triethylamine, and tetrahydropyrrole. This invention, through the design of ultra-small metal oxide nanoparticles and innovative organic ligands, successfully solves the technical contradiction of traditional photoresist materials in achieving high resolution, high refractive index, and low curing shrinkage.

This invention provides a terminal alkenyl-containing liquid crystal compound, its preparation method, and its applications. The terminal alkenyl-containing liquid crystal compound has the structure shown in general formula P. Liquid crystal compositions containing the terminal alkenyl-containing liquid crystal compound of this invention exhibit a fast response speed, a large refractive index and clearing point, and a wide phase transition temperature. The synthesis method of the compound of this invention has high yield, simple post-processing, and is suitable for industrial production.

This invention provides a transparent ABS resin and its preparation method, belonging to the technical field of styrene-based resin materials. Existing transparent ABS preparation methods suffer from high cost, complex processes, and unstable product quality, making industrialization difficult. Therefore, a new method for preparing transparent ABS resin is needed. The transparent ABS resin prepared by this invention has a low-styrene rubber core and a special three-layer core-shell structure, achieving good transparency and high impact resistance. It is low-cost, has a simple and efficient process, stable product quality, and is easily industrially achievable.

This invention discloses a patterned substrate and its fabrication method, as well as an epitaxial wafer for a light-emitting diode (LED), relating to the field of semiconductor optoelectronic devices. The patterned substrate includes a substrate body, a metal reflective layer, and multiple pyramidal protrusions. The substrate body has a first surface and a second surface disposed opposite to each other; the metal reflective layer covers the first surface; the multiple pyramidal protrusions are uniformly distributed on the metal reflective layer; each pyramidal protrusion includes a first AlN layer and a SiO2 layer sequentially stacked on the metal reflective layer. Implementing this invention can improve the luminous efficiency of the LED.

This application discloses an optical adhesive, its preparation method, an optical adhesive film, and a display device, belonging to the field of optical adhesive technology. By compounding a modified acrylate copolymer with a polyurethane acrylate oligomer in the raw materials of the optical adhesive, a highly transparent resin system can be formed. The modified acrylate copolymer is a copolymer pre-formed from at least one acrylate derivative. Compared to ordinary acrylate monomers, the modified acrylate copolymer possesses high refractive index and low light scattering characteristics, effectively improving light transmittance. Furthermore, this highly transparent resin system achieves good light transmittance without relying on nanoparticles, avoiding the problem of nanoparticle agglomeration, thereby improving the haze of the optical adhesive layer obtained from the optical adhesive.

The application provides a suspended optical mechanical system, comprising a first substrate block, a suspended waveguide, a suspended support beam, a plurality of support tether groups, a suspended detection mass and an optical cavity, wherein the suspended waveguide comprises a linear main body part extending along an X direction and a plurality of connection parts arranged in sequence and at intervals along the X direction, and the support tether groups are connected to the section of the suspended waveguide with the connection parts, the stability of the connection of the support tether and the suspended waveguide is increased, the width of the suspended waveguide at the connection parts is enlarged, the optical mode can be well limited in the waveguide, and the influence of the support tether on the optical mode is minimized. The tapered part of the connection part ensures the singularity of the mode in the process of light field transmission and slows down the change trend of the width of the suspended waveguide, which is beneficial to reduce the scattering loss and further increase the quality factor. The connection part arranged on one side can ensure that the gap width between the suspended waveguide and the optical cavity is constant, thereby ensuring the optimal coupling efficiency.

The invention relates to the technical field of defect identification, and provides a silicon carbide epitaxial layer morphology defect classification method and system based on reinforcement learning, and the method specifically comprises the steps: obtaining a morphology feature mapping stability parameter of defect identification according to historical morphology evolution data, and carrying out the calculation to obtain a target classification semantic convergence limit; constructing a defect discrimination evolution model based on reinforcement learning, importing the primary light intensity distribution vector, the lattice dislocation topological matrix parameters and the multi-view morphology response tensor into the defect discrimination evolution model, and generating multiple groups of spatial dimension feature representation values; and carrying out confidence fitting screening, obtaining a target execution action instruction, driving the silicon carbide morphology detection module to carry out attitude registration mapping, and outputting an epitaxial layer morphology defect classification result. According to the method, the problem that in the prior art, normal growth artifacts caused by 4-degree off-axis angle step flow are difficult to accurately distinguish in a dynamic thermal stress environment is solved.

The present application provides a curable composition, a cured film, an organic electroluminescent element, and a method for producing an organic electroluminescent element, which exhibits excellent curability while being low in viscosity, and which can provide a cured film exhibiting a high refractive index and improved element reliability. A curable composition is produced, comprising: [A1] a compound having an ethylenically unsaturated group and at least one group [F1] selected from the group consisting of a group represented by formula (1), -S(=O)-, and -S(=O)2-, the group [F1] having a partial structure adjacent to a carbon-carbon unsaturated bond in the ethylenically unsaturated group; [A2] a compound having an ethylenically unsaturated group and a thioether group, the thioether group having a partial structure adjacent to a carbon-carbon unsaturated bond in the ethylenically unsaturated group; and [B] a radical polymerization initiator. In formula (1), X 1 is an oxygen atom, a sulfur atom, or a selenium atom.

This invention provides an optical glass with a refractive index of 1.76–1.83, an Abbe number of 21–27, and a high partial dispersion ratio. The optical glass, with its composition expressed as molar percentage, contains: P₂O₅: 20–40%; TiO₂: 10–30%; Nb₂O₅: 3–20%; WO₃: 4–20%; Na₂O: 5–26%; K₂O: 5–26%. Through reasonable composition design, the optical glass obtained by this invention has a high refractive index, a low Abbe number, and a high partial dispersion ratio, meeting the requirements for use in high-image-quality optical instruments.

This invention discloses a titanium oxide-zirconia composite target, its preparation method, and its applications. The titanium oxide-zirconia composite target comprises the following raw materials in parts by weight: 60-80 parts titanium oxide; 20-40 parts zirconium oxide; and 0.5-3 parts cerium oxide or 0.1-1 parts tantalum oxide. By doping titanium oxide and zirconium oxide with specific amounts of cerium oxide or tantalum oxide, this invention effectively improves the grain size of the titanium oxide-zirconia composite target and reduces grain boundary defects. The oxide film obtained from the titanium oxide-zirconia composite target of this invention possesses high refractive index and a wide bandgap, with the bandgap increased to over 3.5 eV, expanding its application in deep ultraviolet optical devices. The doping of cerium oxide or tantalum oxide improves the crack resistance of the film, making it crack-free after bending.

This invention discloses a Fe3O4@SiO2 / polyurethane composite photonic crystal sensor, its preparation method, and its applications, belonging to the field of photonic crystal sensor technology. This invention achieves spatial modulation of the C6 fluorescence signal and enhancement of the local photonic field by spectrally matching the reflection band of the structured photonic crystal with the C6 emission band. This results in significant fluorescence quenching response even under extremely low PA concentrations, overcoming the limitation of low sensitivity in traditional fluorescence detection. Compared with traditional HPLC or conventional fluorescence spectroscopy methods, the photonic crystal enhancement system of this invention can improve PA detection sensitivity by approximately 3-4 orders of magnitude, while exhibiting good reproducibility and environmental stability.

This invention relates to the field of organic electroluminescent devices, and discloses a silicon-containing organic compound, its application, and an organic electroluminescent device. The compound has the structure shown in formula (I). The aforementioned organic compound provided by this invention has a high glass transition temperature, a high decomposition temperature, and a high refractive index. When applied as a capping layer on a device, it can improve the light extraction efficiency of the cathode, thereby improving the luminous efficiency of the device.

The invention relates to a formulation for producing an optical layer containing a metal oxide. The formulation may exhibit at least one of properties as a higher material or as a high performance material. The formulations may be used in nanotechnology processes to fabricate semiconductor device / display device applications, such as semiconductor chips, or liquid crystals, quantum dots, OLED displays fabricated on semiconductor controlled substrates.

The present application relates to high refractive index material preparation technical field, particularly to a kind of high refractive index, colorless transparent titanium dioxide / cycloolefin copolymer composite preparation method.The preparation method includes the following steps: under the condition of anhydrous oxygen-free, monomer HBM is dissolved with the functional reaction site-containing norbornene derivative in solvent, catalyst is added to carry out reaction, and termination reaction is obtained cycloolefin copolymer;Cycloolefin copolymer is dissolved in solvent, and hydrolysis condensation reaction is carried out by adding tetrabutyl titanate, and titanium dioxide / cycloolefin copolymer composite material is obtained;The structural formula of monomer HBM is as shown below:;The structural formula of functional reaction site-containing norbornene derivative is at least one of the following structural formula M1~M4:。The refractive index of the titanium dioxide / cycloolefin copolymer composite material is between 1.578~1.701, excellent light transmittance is shown at 589 nm and has high glass transition temperature.

The application discloses a conjugated crosslinking monomer, a solid-phase-free drilling fluid thickening agent, and a preparation method and application thereof. The conjugated crosslinking monomer has a stereoscopic alkyl structure and a conjugated diene structure, and is shown in the following formula. The conjugated crosslinking monomer is prepared by synthesizing an alkenyl compound with an adamantane compound in the presence of a catalyst. The conjugated crosslinking monomer is reacted with an alkenyl amide and an alkenyl sulfonic acid to obtain the solid-phase-free drilling fluid thickening agent. The thickening agent has good temperature resistance and salt resistance, and can improve the suspension and rock carrying performance of a clay-free drilling fluid system in a medium-deep well.

This invention provides an antibacterial GPPS material and its preparation method, relating to the field of antibacterial polymer materials technology. The invention involves adding a glass-loaded zinc antibacterial agent to GPPS. This glass-loaded zinc antibacterial agent is treated with a surface treatment agent, improving its compatibility with GPPS and resulting in an antibacterial GPPS material with both high light transmittance and high mechanical strength.

The present application relates to a kind of laminated optical films, it is sequentially laminated with the 1st optical film, the 1st adhesive layer, the 2nd optical film, the 2nd adhesive layer and the 3rd optical film, wherein, the 1st adhesive layer and the 2nd adhesive layer are the cured product layer of laminated optical film adhesive composition containing curable component and metal oxide particles.It is preferable that the refractive index of the 1st adhesive layer and the 2nd adhesive layer is 1.55 or more.It is preferable that the refractive index of the 1st optical film and the 2nd optical film is 1.55 or more.It is preferable that the 1st optical film and the 2nd optical film are both phase difference films of liquid crystal type, and it is preferable that the 3rd optical film is at least a polarizing film with polarizer.

The utility model relates to the technical field of optical fiber laser, specifically relates to a kind of based on phase continuous sweep frequency optical fiber laser, including shell, the inside one side of shell is fixedly installed with the multimode pump transmitter for emitting laser source, the output end of multimode pump transmitter is provided with phase modulator, the other end of phase modulator is provided with first fiber grating, the one side of first fiber grating away from phase modulator is connected with optical fiber body, the other end of optical fiber body is fixedly connected with second fiber grating, the other side of second fiber grating is fixedly connected with the multimode pump coupler of emission gain rear laser.Compared with prior art, the utility model, by being provided with first fiber grating and second fiber grating cooperate optical resonant cavity, and in optical resonant cavity outer wrapping heat pipe, the frequency of stable optical resonant cavity is ensured the stability of laser output frequency, and optical path length drift caused by heat effect can be reduced.

The application relates to the technical field of micro-nano elements and light field regulation, and particularly relates to a micro-nano element for realizing dynamic light field regulation and a preparation method thereof. The preparation comprises the following steps: preparing a master template and a transfer template; processing a layer of transparent electrode on a quartz glass substrate to prepare two electrode plates; processing a PMN-PT film on the transparent electrode layer of the prepared electrode plate; processing the PMN-PT film layer into a functional micro-nano structure; covering another electrode plate above the functional micro-nano structure, and the quartz glass substrate is located on the outer side; the two layers of transparent electrodes are a bottom electrode and a top electrode, wires are connected between the two, and a dynamic light field regulation micro-nano element is obtained. The application has the advantages of simplified steps, flexible processing mode and reduced cost. The application has the advantages of high manufacturing efficiency and easy realization of batch production. The application provides a new idea for dynamic tuning of the light field of a high-refractive-index material metasurface, and can be widely applied to multiple fields such as nanometer sensing, micro-nano object manipulation and capture.

This invention relates to an optical film, its preparation method, and its application. The optical film comprises a polyester matrix resin and a cyclic olefin copolymer dispersed in the polyester matrix resin in particulate form, and satisfies at least the following conditions: (1) the particle size distribution coefficient is less than or equal to 0.25; (2) the particles separate from the polyester matrix resin interface to form a microporous structure, and the ratio of the pore size of the microporous structure to the particle size is 0.7~1.3; (3) the glass transition temperature of the cyclic olefin copolymer is T. g,COC The glass transition temperature of the polyester matrix resin is T. g,Polyester And T g,COC -T g,Polyester ≥40℃. The optical film of this invention has excellent reflectivity and heat resistance.

This invention relates to the field of architectural ceramics technology, disclosing a titanium sphene crystal frit, its preparation method, and its application. The raw materials include kaolin, titanium dioxide, quartz, potassium feldspar, calcite, and wollastonite. By pre-firing the titanium sphene crystal frit using this formula, the titanium sphene crystals are pre-dissolved in the glass phase. During the subsequent glaze firing process at 1200℃, the titanium sphene crystals melt again and precipitate a second time, resulting in an opaque glaze layer. This secondary crystallization enhances the chemical stability of the titanium sphene crystal frit during subsequent glaze firing, leading to a more stable increase in the solar reflectance of the fired glaze. This solves the problem of unstable reflectivity in glazes when directly using titanium sphene powder or combining it with titanium dioxide and titanium frit to directly form titanium sphene crystals during glaze firing.