956 results about "Nanostructure" patented technology

The invention discloses a biomass-based reinforcing agent for paper and application of the biomass-based reinforcing agent. The reinforcing agent comprises a biomass-based material, the biomass-based material comprises a micron-sized structure and a nano-sized structure distributed on the micron-sized structure. The reinforcing agent prepared by the invention has abundant nanostructures, is beneficial to physical crosslinking such as entanglement and bridging of fibers in paper pulp, and improves the wet strength of paper; the preparation of the reinforcing agent is a simple physical process, and a complex synthesis chemical process for synthesizing a polymer in a traditional organic reinforcing agent is avoided; the reinforcing agent is prepared by a dissolution regeneration method, so that the energy consumption is low, the solvent can be recycled and reused, no chemicals are consumed, and the reinforcing agent is environment-friendly; the reinforcing agent prepared by the invention can achieve a satisfactory wet strength effect at a lower content.

The invention discloses a heat-resistant aluminum rare earth alloy wire containing a two-phase nanostructure and a preparation method of the heat-resistant aluminum rare earth alloy wire, and belongs to the field of non-ferrous metal materials. According to the alloy, aluminum serves as a matrix, and the alloy further comprises, by mass, 0.005%-0.2% of Ce, 0.05%-0.25% of Er, 0.05%-0.25% of Yb, 0.1%-0.2% of Zr and 0.05%-0.2% of Fe. The alloy wire prepared by combining two-stage homogenization, hot extrusion and cold drawing processes contains an Al3 (RE, Zr) nano precipitated phase and a nanoscale Al13Fe4 dispersed phase, the inner layer of the Al3 (RE, Zr) nano precipitated phase is Al3RE, and the outer layer of the Al3 (RE, Zr) nano precipitated phase is Al3Zr; and the nanoscale Al13Fe4 dispersed phase is a nano precipitated phase formed by sequentially coating the outer layer of an Al13Fe4 phase with an Al3RE structure and an Al3Zr structure. The alloy provided by the invention has excellent strength, high-temperature service stability and conductivity.

The invention discloses a two-dimensional bionic nanostructure assembled based on receptor-ligand acting force and a preparation method of the two-dimensional bionic nanostructure. The core characteristic of the two-dimensional bionic nanostructure is that the ultrafine particles modified by ligand molecules are anchored on the surface of a cell membrane fragment with a corresponding receptor expressed on the surface through a receptor-ligand effect, so that uniform compounding of the ultrafine particles and the cell membrane is realized; the bottlenecks of low compounding efficiency, functional site masking and the like caused by high surface curvature of small-size particles in the traditional cell membrane complete wrapping technology are broken through. According to the preparation method disclosed by the invention, the binding force between the cell membrane and the ultramicro particles is stronger, the off-target phenomenon of the ultramicro particles in the in-vivo circulation process can be avoided, the response release of the ultramicro particles under the competition effect in a lesion region expressed by a high-abundance receptor can be realized, and the preparation method has a good application prospect in the aspect of precise drug delivery. Meanwhile, the in-vivo circulation time of the ultrafine particles is prolonged by membrane loading, the biocompatibility of the ultrafine particles is improved, and the effectiveness and low toxicity of a drug delivery system are ensured.

The invention discloses a three-fluid three-dimensional flow guide spinning head, electrostatic spinning equipment and a batch preparation method of three-chamber embedded parallel structure nanofibers, three different fluids are synchronously guided into a high-voltage electrostatic field by simultaneously arranging a plurality of nozzle outlets with combined structures, and a plurality of complex combined nozzle outlets are used as macroscopic templates, so that the three-chamber embedded parallel structure nanofibers are prepared under the high-voltage electrostatic field. Through interaction of a high-voltage electrostatic field and fluids, batch preparation of the three-chamber embedded and column-structured nanofibers by multi-fluid common electrospinning is realized. The three spinning solutions are guided to a common outlet through the first series of metal capillary tubes, the second series of metal capillary tubes and the spinning solution insulating container respectively; the first series of metal capillary tubes and the second series of metal capillary tubes are respectively dispersed from respective capillary tube gathering inlets, penetrate through the interior of the spinning solution insulating container to the bottom of the spinning solution insulating container and vertically penetrate out to form a plurality of outlets which are parallel in pairs; a through hole outlet is formed in any parallel outlet at the bottom of the spinning solution insulating container to form a common outlet of the three spinning solutions, and the three-chamber embedded and arrayed nano structure is directly prepared in batches in a single step.

A composite, comprising a binder, the binder comprising one or more of polymeric, metallic, or ceramic, or pyrolytic carbon binder and a nanostructured carbon having a cellular structure. The cellular structure comprises one or more cell walls having a structure formed by a template and one or more cavities. Each cavity is substantially enclosed by the one or more cell walls and substantially unimpregnated by a liquid or solid.

The invention relates to a device (1) for imaging micro- and / or nanostructures, in particular structures on microlithography masks. The device (1) comprises an illumination device (10) for illuminating an object (20) with illumination radiation and an image capture unit (40) for capturing the illumination radiation transformed by the object (20), wherein the device (10) is designed to be focusable, wherein the image capture unit (40) comprises at least two image capture sensors (45, 46, 47) which are arranged such that at least one image capture sensor (45, 46, 47) is defocused regardless of the focusing of the device (1).

The invention belongs to the technical field of kitchen ware coatings, and discloses a preparation method of a wear-resistant coating based on nano structure optimization, through a specific ratio of nano silicon carbide, titanium dioxide, boron nitride and silver, four particles form a complementary and synergistic functional system-silicon carbide provides a hardness basis, boron nitride optimizes the antifriction performance by means of a layered structure, and the wear-resistant coating is prepared. Titanium dioxide enhances the chemical stability; by matching with a composite dispersion process of high-energy ball milling and ultrasonic treatment, particle aggregation is broken, so that the coating forms a uniform and compact nano-structure, the structure can effectively disperse friction stress, the wear resistance is remarkably improved, and the service life of the kitchen ware in a high-frequency cooking friction environment is greatly prolonged; a kitchen ware substrate is subjected to 80-mesh white corundum sand blasting to form a rough surface, then impurities are removed through ultrasonic cleaning, and a good interface condition is created for coating adhesion; and a subsequent stepped vacuum curing process promotes chemical bonding of the nanoparticles and the polyimide resin, and the binding force of the interior of the coating and the binding force of the coating and the substrate are enhanced.

The application relates to a modified separation membrane in the technical field of membrane materials, a preparation method and application thereof. The modified separation membrane comprises a base film and a nanostructure layer on the upper surface of the base film and the membrane hole surface close to one side of the upper surface of the base film; wherein the pore size of the base film is 120-400 mu m; the nanostructure layer is composed of microparticles with a size of 100-1000 nm; the preparation method comprises 3D printing of the separation membrane; and the upper surface of the separation membrane and the membrane hole surface close to one side of the upper surface of the separation membrane are subjected to plasma treatment. The modified separation membrane preparation method combines the 3D printing technology and the membrane separation technology, improves the traditional membrane preparation process, finds a more optimal membrane replacement process, and the modification method is free of chemical agents, has the advantages of being more convenient and fast to operate, high in separation efficiency, low in processing cost, green and pollution-free, and the like, and has important significance in the aspects of membrane separation technology improvement and application of oily wastewater treatment.

The present disclosure provides compositions and related methods, e.g., for preparing immobilized nucleic acid nanostructures using compaction oligonucleotides. In some embodiments, rolling circle amplification reaction can be conducted with compaction oligonucleotides on-support or in-solution to generate concatemer molecules having multiple copies of a polynucleotide unit arranged in tandem. Each polynucleotide unit comprises a sequence-of-interest and at least one universal adaptor sequence that binds one end of a compaction oligonucleotide. The 5′ and 3′ regions of the compaction oligonucleotide can hybridize to the concatemer to pull together distal portions of the concatemer causing compaction of the concatemer to form a nanostructure. Nanostructures having tighter size and shape compared to concatemers generated in the absence of the compaction oligonucleotides. The compact and stable characteristics of the nucleic acid nanostructures improves sequencing accuracy by increasing signal intensity and they retain their shape and size during multiple sequencing cycles.

An augmented reality system may include a waveguide having an edge surface extending between opposing light guide surfaces. The waveguide may direct light toward the edge surface. The waveguide may include a reduced reflectivity film, such as an absorber film or a photovoltaic film, disposed on the edge surface. To form a reduced reflectivity film, a curable material may be disposed on the dissolvable film. The curable material may be cured when disposed on the dissolvable film such that the cured material forms a reduced reflectivity structure on the dissolvable film. The dissolvable film may be dissolved such that the reduced reflectance structure remains intact as a reduced reflectance film, which may be adhered to the edge surface, for example, with a primer layer. The edge surface may include a nanostructure sized to be less than the half wavelength of the guided light, which nanostructure may reduce the reflectivity of the edge surface.

Nanostructured chiral microparticles with bowtie shape having widely variable pitch, size, thickness and length are provided. The self-limited assembly of anisotropic building blocks makes possible high synthetic reproducibility, size monodispersity and computational predictability of their geometries for different assembly conditions. They display multiple strong circular dichroism peaks originating from absorptive and scattering phenomena. Unlike classical chiral molecules, these particles display a continuum of Osipov-Pickup-Dunmur chirality measures that exponentially correlate with the spectral positions of the circular dichroism peaks. Bowtie particles with variable polarization rotation were utilized in printing photonically active metasurfaces with spectrally tunable positive / negative polarization signatures for light detection and ranging (LIDAR) devices.

The invention discloses a super-lens design method based on etching uniformity compensation and an optimization system thereof. The super-lens design method specifically comprises the following steps: S1, etching a wafer and establishing an etching rate space distribution model; S2, designing layout partitions and distributing compensation coefficients; s3, pre-compensating the size of the nano structure; s4, generating a final mask and executing etching; according to the method, the space size pre-compensation of the nano structure is actively performed in the mask design stage, and the phase deviation caused by non-uniform etching depth is counteracted by using the change of the effective refractive index of the nano unit, so that the high-performance super lens is obtained under the non-ideal process condition, and the limitation of the process physical limit is broken through.

The invention discloses construction and application of a confinement enhanced photoelectrochemistry-electrochemiluminescence dual-mode biosensor, and relates to the technical field of biosensing and analytical chemistry. The preparation method of the biosensor comprises the following steps: taking a CdS (at) SiO2 (at) NaYF4: Yb / Tm nano composite material as a substrate to obtain a confinement enhanced photoelectrochemistry (PEC) and electrochemiluminescence (ECL) sensing interface; in combination with a DNA wheel nanostructure triggered by target acetamiprid, signal amplification is realized; and synchronous dual-mode quenching detection of PEC and ECL signals is realized by virtue of peroxidase-like catalytic precipitation and wide-spectrum absorption characteristics of the PtPd-CoSnO3 nanocube. The biosensor prepared by the invention has the advantages of high sensitivity, strong reliability, good selectivity and the like, can be applied to accurate detection of acetamiprid in samples such as agricultural products and the like, and has important application value in the aspects of environmental monitoring and food safety control.

The invention provides a polarization selectivity all-dielectric high-saturation structural color metasurface with a maintainable color center. The metasurface sequentially comprises a SiO2 semi-ellipsoid layer, a GaN elliptic cylinder array and a PDMS flexible substrate from top to bottom, wherein the SiO2 semi-ellipsoid layer and the GaN elliptic cylinder array form a periodically arranged double-layer all-dielectric nanostructure unit. Under the condition of x polarization incidence, the structure generates a narrow-band high-reflection structural color in a visible light wave band, the full width at half maximum of a main reflection peak is about 9 nm, the peak reflectivity can reach 99.8% or above, and the reflectivity of a secondary reflection peak on the short wave side is lower than 0.01; and under the y polarization incidence condition orthogonal to the light source, the reflectivity near the corresponding wavelength is lower than 2%, and the light source shows remarkable polarization selectivity. The inventor further finds that when the equivalent radius change of the nano unit causes the reduction of the reflection efficiency, the reflectivity of the main peak can be recovered by adjusting the long-short axis ratio of the GaN elliptic cylinder and the SiO2 semi-ellipsoid, and the central wavelength of the main formant is basically kept unchanged, so that the brightness adjustment is realized on the premise that the color center is basically constant. The structure is suitable for flexible or wearable optical devices, polarization-related structural color display and other applications.

The invention relates to the technical field of crossing of biomedical engineering, molecular diagnosis and nano-optical sensing, and particularly discloses a virus nucleic acid variation amplification-free LSPR (Local Surface Plasmon Resonance) detection method and chip based on a gold nano-structure. The virus nucleic acid variation amplification-free LSPR detection chip based on the gold nanostructure comprises a sample injection port, a reaction area, a washing area, a detection area and a waste liquid area, the sample injection port is used for injecting a viral nucleic acid or protein sample, a plurality of groups of probe sequences are fixed in different reaction regions of the chip, non-amplification rapid detection of viral nucleic acid variation is realized, high sensitivity and specificity are ensured, and by utilizing the unique advantages of an MSNs template branched gold nanostructure, the detection sensitivity is improved. Refractive index change caused by single base mutation is directly amplified, the capability of completing femtomole-level detection within 30 minutes is achieved, the overall detection speed is increased, rapid typing detection of viral nucleic acid variation is achieved through LSPR spectral signals under the non-amplification condition, and a portable platform is formed by integrating the LSPR spectral signals and a micro-fluidic chip.

The invention provides a laser interference processing optimization method and system for improving the performance of a micro-nano structure, and relates to the technical field of laser micro-nano machining.The method comprises the steps that firstly, micro-nano structure sample processing parameters are extracted, a sensitive tracking model is constructed to analyze parameter sensitivity, and a lifting-retaining parameter set is obtained; according to the simulation modeling, processing and lifting a dynamic model diagram, analyzing the period consistency of the dynamic model diagram and a reference design diagram through foreground and background maximum flow cutting, and determining a structure period; if the local photoetching model diagram is of a periodic structure, projecting the actual local photoetching model diagram to a local photoetching model diagram of one type in a sine manner, analyzing the curve slope, and optimizing a periodic interference angle and a light beam wavelength; and if the structure is a non-periodic structure, interpolating a gradient processing chromaticity layout for the second-class local photoetching model diagram according to a chromaticity tradeoff criterion, and analyzing and optimizing a dynamic phase in real time. According to the method, high-precision optimization of the processing parameters of the micro-nano structure with consistency in different periods is realized, and the overall performance and stability of the micro-nano structure are effectively improved.

Compositions containing a nucleic acid nanostructure having a desired geometric shape and an antigen and / or immunostimulatory agent(s) bound to its surface are provided. The nanostructure design allows for control of the relative position and / or stoichiometry of the immunostimulatory agent(s) bound to its surface. The antigen and / or immunostimulatory agent(s) displayed on the nanostructure surface are arranged with the preferred number, spacing, and 3D organization to elicit a robust immune response. The displayed antigen can be eOD-GT8. The immunostimulatory agent can be, e.g., T cell epitope such as a pan HLA DR-binding epitope (PADRE) and / or a lectin such as MBL or C3, or ligand thereof such as a glycan including mannose. Also provided are antigen-T cell epitope fusions such as eOD-PADRE and nanostructures presenting the same. The immunostimulatory compositions may thus be useful as immunogens, vaccines, adjuvants, and the like. Methods of inducing immune responses are also provided.

A septum configured to transmit extreme ultraviolet radiation, the septum including a nanostructure configured to absorb deep ultraviolet radiation, and a method for forming the septum. The diaphragm may form part of an EUV lithographic apparatus, for example as part of a spectral purity filter, pellicle assembly, or dynamic airlock assembly.

To provide an aperture metasurface and a hybrid refractive metasurface imaging system.SOLUTION: There is provided a hybrid imaging system incorporating a conventional optical element and a metasurface element together with a light source and / or a detector, and a method of manufacturing and operating such an optical arrangement. The system and method describe the integration of an aperture with metasurface elements and refractive optical systems with metasurface elements in an illumination source and a sensor. The imaging system includes at least one image sensor, a substrate layer having a substrate thickness disposed a first distance above the at least one image sensor, an aperture disposed on a first surface of the substrate and having an aperture opening disposed therein, and a monolayer of a plurality of identical or unique nanostructure elements including a metasurface disposed on a second surface.SELECTED DRAWING: Figure 1

A semiconductor device structure is provided. The semiconductor device structure includes a substrate. The semiconductor device structure includes a channel nanostructure and a dielectric nanostructure over the substrate. The dielectric nanostructure is between the substrate and the channel nanostructure. The semiconductor device structure includes a gate cut structure passing through the channel nanostructure and the dielectric nanostructure. The semiconductor device structure includes a first source / drain structure over the substrate and connected to the channel nanostructure. The inner spacer is between the first source / drain structure and the dielectric nanostructure.

The present invention relates to a medical device manufactured using the additive manufacturing process (3D printing). It is a medical device used preferably as a bone graft composed of a porous structure based on bioceramics based on β-tricalcium phosphate (β-TCP) or hydroxyapatite, which may or not contain nanostructures in its composition, for example: carbon nanostructures (graphene, graphene oxide, reduced graphene oxide, carbon nanotubes, etc.) and, in preferred embodiments, stem cells and polymeric membrane. Also, the present invention relates to the use of this device as a bone graft and the process of preparing this device.

The invention discloses a soft coal seam nanofluid fracturing propping material and a preparation method thereof.The soft coal seam nanofluid fracturing propping material is prepared from, by weight, 80-90% of a base material, 1-5% of a super-hydrophobic coating, 5-10% of a catalytic active component and 5-15% of a rheological enhancer, the base material is a compound of high-purity silicon dioxide nanoparticles and graphene nanosheets GNP, the particle size of the high-purity silicon dioxide nanoparticles is 50-200 nm, the super-hydrophobic coating is a fluorosilane modified layer, the thickness of the super-hydrophobic coating is 5-20 nm, and the invention relates to the technical field of coal bed gas exploitation. According to the soft coal seam nanofluid fracturing propping material and the preparation method thereof, the surface of the material is provided with a super-hydrophobic coating, friction force with a coal matrix is reduced, high embedding resistance is achieved, the flow conductivity is specifically enhanced, an extra flow channel is provided through a porous nanostructure, the fracturing fluid permeability is improved, and meanwhile gas desorption can be cooperated; catalytic active sites are introduced to the surface of the material to promote adsorption and diffusion of methane molecules.

The invention discloses a vector vortex super lens for directional selective edge detection and an imaging system with the vector vortex super lens, and the vector vortex super lens comprises a substrate and a nano-structure unit on the substrate. The nano-structure units are arranged on the substrate according to specific phase distribution to form a nano-structure unit array; x-line polarized light carrying sample information passes through the vector vortex super lens to generate left-handed and right-handed emergent light, the two paths of emergent light are superposed to obtain an edge image carrying polarization information, and a vector edge detection function is realized. The vector vortex super lens provided by the invention has the edge extraction capability of dynamic adjustment as required, and can realize real-time directional edge detection only by rotating the polarization analyzer without other hardware modification or digital post-processing.

The utility model provides a super lens for dodging and a dodging emitting device comprising the same. The super lens comprises a substrate and a micro-nano structure arranged on the substrate, the super lens is used for modulating the received light beam so as to form a homogenized light spot on a target plane; the micro-nano structures are anisotropic, and the absolute value of the difference value between the rotation angles of two adjacent micro-nano structures on the super lens is larger than a preset threshold value. According to the invention, the geometric phase of the super lens is designed through the GS algorithm, so that the phase distribution of the super lens is more random, the rotation angles of the adjacent micro-nano structures differ greatly, that is, the same-polarization phase of the super lens is more disordered, the same-polarization emergent light does not become zero-order, and the homogenization effect on the light beam is improved.

A method for fabricating functional optical components. A detackable adhesive layer is deposited on an intermediate substrate. A curable liquid is deposited onto the detackable adhesive layer on the intermediate substrate. An imprint template is used to transfer patterns onto the curable liquid followed by curing thereby forming an imprinted patterned material on the intermediate substrate. A layer of functional material is deposited on the imprinted patterned material. Furthermore, a polymer layer is deposited on top of the functional material layer. A correlated etch of the polymer layer and the functional material layer is then performed thereby forming an etched functional material surface. The etched functional material surface is bonded to a final substrate. The imprinted patterned material is then detacked from the intermediate substrate at the detackable adhesive layer.

The present invention discloses a high-voltage conductor with a surface microstructure (abbreviated as "microstructured conductor") and a preparation method thereof. The high-voltage conductor with a surface microstructure is continuously prepared by a wire drawing nanoimprinting method using a wire drawing die with a micro-nanostructure on the inner hole surface. The preparation method has low cost and high efficiency, and can mass-produce high-performance microstructured conductors with super-hydrophobicity, super-oleophobicity, anti-icing, anti-freezing rain, anti-rime, anti-fouling and self-cleaning functions, thereby solving the icing problem faced by overhead high-voltage conductors in ice, snow and freezing rain weather, and providing a new technical solution for improving the reliability and stability of transmission lines.

An ion trap (1) is specified, comprising: - a support substrate (3) on which a set of electrodes (4) is arranged, wherein the set of electrodes is configured to capture at least one ion (2), - an optical system (5) provided on the support substrate (3), and - a detector device (6) arranged behind the support substrate (3) and the optical system (5), wherein - the optical system (5) comprises a nanostructure, - the optical system (5) is designed to be transparent to fluorescence emission of at least one ion (2), and - the detector device (6) is designed to detect the fluorescence emission passing through the optical system (5). Additionally, a quantum computer device is mentioned.

An electrocatalyst useful for forming hydrogen from water by the hydrogen evolution reaction. The electrocatalyst includes a titanium (Ti)-including substrate, an array of titanium dioxide (TiO2) nanotubes (TNTs) disposed on the Ti-including substrate, and cobalt oxyphosphide (CoOP) nanostructures disposed on the surface of the TNTs. The TNTs are crystalline, as observed by powder X-ray diffraction (PXRD). The CoOP is amorphous by PXRD, and the CoOP nanostructures are substantially spherical and have a mean size of 75 to 400 nanometers (nm).

The invention relates to a thermoforming method, in particular a press forming method, for forming structures, in particular microstructures or nanostructures, in a surface (2) of a substrate (3) by means of a forming die (4). To this end, the surface (2) of the substrate (3) is locally heated by means of laser radiation (5) above a softening temperature, and then a negative structure of the press surface (6) of the forming press (4) is embossed into the deformable glass frit at a set pressure by means of a forming force (F). In order to maintain the heat input even during the forming process, in particular to ensure that the temperature is constant throughout the forming process and that the temperature distribution is uniform over the entire die surface (6), the forming die (4) and the die surface (6) are made of a material which is wavelength transparent to the laser radiation (5).

The invention discloses a treatment method for blocking open pores of nuclear graphite by adopting a silicon carbide nanostructure so as to prevent molten salt and molten metal from infiltrating graphite. Comprising the following steps: 1) mixing polycarbosilane and an organic solvent according to a mass concentration ratio of 50%-70% to form a solution, adding a catalyst to serve as a precursor solution, and completely immersing the precursor solution into graphite pores through vacuum infiltration or pressure infiltration; 2) placing the infiltrated graphite in a closed environment of 70-200 DEG C, hydrolyzing and curing the precursor solution to form a gel network, then drying in a vacuum environment of 0-300 DEG C, and forming an aerogel precursor in graphite holes; and 3) in an inert gas atmosphere or a vacuum environment, heating to 1300-1800 DEG C, and pyrolyzing the aerogel precursor to form the silicon carbide nanostructure. Compared with a traditional method, the method has the advantages of simple process, difficulty in failure, no change of the original performance of graphite and the like, and has relatively high economic value and application prospect.