111 results about "Nanostructure" patented technology

The application relates to a light-degradation-driven high-molecular nanomotor and a preparation method, and aims to solve the environmental pollution and biological safety problems caused by the degradation difficulty or long cycle of the nanomotor power assembly. The nanomotor has an asymmetric nanostructure and is assembled by a light-degradation high-molecular assembly and a biocompatible high-molecular effective load in a nanometer scale. The preparation method comprises the following steps: 1. uniformly mixing a light-degradation high-molecule and a biocompatible high-molecule in an organic solvent to prepare a mixture A; 2. mixing the mixture A and water at a high speed to prepare a mixture B; and 3. removing the organic solvent to prepare the nanomotor. Under light, the light-degradation assembly absorbs light energy to degrade and generate bubbles, which push the nanomotor to move in the solution. The start / stop of the nanomotor is controlled by the on / off of the light source, and the fast / slow movement of the nanomotor is controlled by the strong / weak of the light source. The structure of the light-degradation assembly is gradually degraded and finally completely destructed with the reaction, so that the biological safety and environmental pollution problems of the nanomaterial are relieved.

Methods and systems are disclosed that enhance the yield and speed of emission and control the spectral and angular emission of light emitted by materials under irradiation by high-energy particles through a process known as scintillation. In each case, a photonic structure (of nano- or micron-scale feature sizes) is integrated with a scintillating material, and the photonic structure enhances the yield or controls the spectrum of the material. Various embodiments of this technology and practical demonstrations are disclosed.

The application provides a feature region identification method and system based on an atomic force microscope (AFM) topography, and the method comprises the following steps: acquiring an AFM topography data matrix of a nano preparation region; dividing the AFM topography data matrix into a plurality of sub-regions corresponding to preparation structures according to the number of the preparation structures; performing a region positioning step on each sub-region to determine the start and end ranges of a feature region representing a nano structure in a vertical direction in each sub-region; performing a center line fitting step in the start and end ranges of the feature region, fitting feature points in multiple rows of data to obtain a feature center line representing an extension direction of the nano structure; and performing a row-by-row identification operation on multiple rows of topography data in the feature region along the feature center line to identify feature region boundary points in each row of data. The technical scheme provided by the application realizes batch, automatic and high-precision identification of a plurality of nano structure feature regions in a complex AFM topography.

This invention discloses a method for controlling the thermal relaxation path of superconducting nanostructures and its application. This method utilizes a van der Waals integration strategy to sequentially fabricate a molybdenum disulfide layer on a silicon / silicon oxide substrate using chemical solution deposition and a niobium nitride superconducting layer using magnetron sputtering, constructing a niobium nitride / molybdenum disulfide heterostructure with intrinsic anisotropic thermal conductivity. Superconducting nanodevices with specific geometric configurations are designed for this heterostructure. Leveraging the ultra-high in-plane thermal conductivity of molybdenum disulfide and its suppressed out-of-plane heat transfer characteristics, the method achieves directional control of the internal thermal relaxation path of the superconducting nanostructure, verifying its dual advantages of optimizing thermal management and enhancing superconducting performance. The control method of this invention is mature and controllable, effectively transforming disordered thermal relaxation into directional heat transfer, significantly improving the thermal stability and integration density of superconducting devices, and providing a core solution for the thermal management of nanocircuits in fields such as superconducting quantum computing and high-sensitivity quantum detection.

This invention discloses a CuS nanostructure material, its preparation method, and its applications. The CuS nanostructure material uses Cu-MOF octahedrons as a precursor, which are hydrothermally sulfided to obtain an octahedral hierarchical structure assembled from CuS nanorods. The CuS nanorods have a size of 50-100 nm, and the edge length of the precursor Cu-MOF octahedrons is 0.8-1 μm. This invention utilizes a one-step hydrothermal method to prepare a CuS nanostructure material through Cu-MOF sulfidation, resulting in a zinc-ion battery anode material with high conversion efficiency and excellent electrochemical performance.

Disclosed is an imaging apparatus comprising: a segmented scintillator structure; and a photocathode structure optically coupled to the segmented scintillator structure, for conversion of high-energy particles with an arbitrary spatial distribution to a corresponding distribution of photoelectrons, emitted with a spread in energy ranging from 100 meV to 1 meV. Also disclosed is an imaging apparatus comprising: a segmented scintillator structure, and a photocathode structure optically coupled to the segmented scintillator structure, for conversion of high-energy particles with an arbitrary spatial distribution to a corresponding distribution of photoelectrons, emitted with an angular spread ranging from 10 degrees to 0.1 degrees. Also disclosed is a pressureless filling of capillary tubes and nano-molds using electroosmosis effect.

This invention provides a CD147-targeting nano-ultrasound contrast agent, its preparation method, and its application. The contrast agent comprises: microbial-derived gas vesicles and CD147 nanoantibodies linked to the surface of the gas vesicles via a coupling agent. The hollow nanostructure of the gas vesicles in this invention endows the contrast agent with highly efficient acoustic reflection capabilities, significantly improving the ultrasound signal intensity. The CD147 nanoantibodies possess high affinity and high specificity, enabling precise recognition of the CD147 antigen on the surface of tumor cells. This invention uses biosynthesized gas vesicles instead of traditional chemically synthesized gas microbubbles, combined with a simple and efficient coupling process, significantly reducing preparation difficulty and equipment dependence. The contrast agent of this invention overcomes the shortcomings of existing technologies in imaging performance, targeting, preparation process, safety, and multifunctional diagnostic and therapeutic capabilities, providing a novel technical pathway for precision diagnosis and treatment of tumors.

This invention provides a one-dimensional silver nanostructure / metal hydroxide composite material, its preparation method, and its application. The preparation method includes: adding a one-dimensional silver nanostructure, a metal salt, and an additive to a solvent and stirring to disperse them evenly; adding an acidic or alkaline reagent under stirring conditions to adjust the pH of the solution, causing the metal ions in the solution to convert into metal hydroxide precipitates, obtaining a one-dimensional silver nanostructure-metal hydroxide suspension; then performing solid-liquid separation, washing and drying the obtained solid product to obtain a one-dimensional silver nanostructure / metal hydroxide composite powder; wherein the metal hydroxide is aluminum hydroxide, zinc hydroxide, magnesium hydroxide, iron hydroxide, manganese hydroxide, copper hydroxide, nickel hydroxide, or cobalt hydroxide, and the one-dimensional silver nanostructure is silver nanowire or silver nanoribbon. The resulting composite material uses metal hydroxide as a carrier and separator, inhibiting the drying and agglomeration of silver nanowires from the source, exhibiting high conductivity and good redispersibility, thus improving conductivity.

This invention discloses a method and system for predicting electrical joint faults, belonging to the field of electrical joint fault prediction technology. Through microstructural degradation analysis, it obtains microstructural information such as initial strain and strain response rate, and analyzes its changes using a strain accumulation model and a nanostructure dynamic response model. Subsequently, it performs electrical performance response evaluation, collecting parameters such as initial contact resistance to quantify the impact of microstructural changes on electrical performance. Based on this, a fault prediction model is constructed. Potential fault risks are assessed by comparing the fault occurrence probability with a preset risk threshold. When a risk occurs, a maintenance priority quantification value is calculated based on the fault occurrence probability, compared with a preset threshold range, and a maintenance decision is generated. Priorities are assigned and maintenance is notified. Through multi-dimensional analysis and precise model construction, the accuracy of electrical joint fault prediction is significantly improved, facilitating the early detection of potential fault risks and making maintenance work more targeted.

This invention discloses a preparation process for high-carbon ferrochrome based on plasma spheroidization technology, belonging to the field of powder metallurgy. The process involves crushing and ball milling high-carbon ferrochrome blocks to obtain pre-formed powder, adding tannic acid, urea, nickel acetate tetrahydrate, and citric acid for coating, followed by spray drying. After pre-reduction carbonization in an argon-hydrogen atmosphere, the powder is then spheroidized using a radio frequency inductively coupled plasma torch. In-situ nanostructure growth is achieved in a mixed atmosphere of argon, hydrogen, and acetylene. Nickel acetate is reduced to catalytically active elemental nickel nanoparticles under the action of hydrogen and carbon monoxide. The powder is then cooled, graded, and inertly encapsulated to obtain a high-sphericity, low-oxygen-content, high-carbon ferrochrome-based core-shell structured spherical powder. The process flow of this invention is continuous and controllable, effectively improving powder flowability, bulk density, hardness, and corrosion resistance, and is applicable to additive manufacturing, thermal spraying, and powder metallurgy forming.

The application discloses a kind of multilayer nanostructure hemostatic powder and preparation method thereof, belong to the field of biomedical hemostatic material.To solve the problem of insufficient mechanical strength of existing silk fibroin-polyphenol hemostatic material, the silk fibroin solution is mixed with regenerated chitin nanofiber solution in proportion, and tea polyphenol solution is added dropwise to induce co-assembly and gelation, and the powder is prepared by washing, freeze-drying and grinding.The powder can quickly absorb water and self-gel after contacting with blood, and form a stable three-dimensional network hydrogel within a few seconds.The regenerated chitin nanofiber guides the formation of hierarchical nanostructure of silk fibroin through supramolecular interaction, significantly enhances the mechanical strength and adhesion, while tea polyphenol provides antibacterial, antioxidant and procoagulant functions.The hemostatic powder of the application has the functions of rapid hemostasis, strong adhesion in wet state, resistance to flushing and promotion of wound healing, and is suitable for various acute bleeding scenarios.

The present application belongs to the field of micro-nano processing and X-ray optical testing technology, and particularly relates to a high-resolution test card in hard X-ray band and a preparation method thereof. The test card adopts electron beam lithography combined with proximity effect correction technology to prepare an HSQ template pattern, forms a Siemens star structure with a minimum line width of 10 nm and a height of 500 nm, and then covers a metal working layer on the template surface through atomic layer deposition technology. The HSQ template pattern has a duty cycle less than 1, effectively improving the aspect ratio of the pattern. The covering of the metal working layer doubles the line density of the final pattern. The present application breaks through the resolution limit of the traditional test card, solves the problem of preparation of high-aspect-ratio nano structures, and has simple and reliable process, and is suitable for resolution calibration of absorption contrast and phase contrast imaging systems in hard X-ray band, thereby providing key technical support for performance evaluation of high-end X-ray optical systems.

This invention belongs to the field of nanoimprint lithography technology. It provides a dielectric-driven tunable nanoimprint template, its manufacturing method, and a nanoimprinting method. The tunable nanoimprint template integrates a dielectric active driving layer and an electrode layer on one side of a flexible substrate, and a nanostructure layer on the other side. By applying a voltage to the dielectric active driving layer, the Maxwell strain generated by the dielectric effect causes the thickness of the dielectric active driving layer to compress and the area to expand, inducing in-plane stretching, which in turn changes the geometric parameters of the nanostructure in the front nanostructure layer. This nanoimprint template can achieve a large-scale adjustment of the nanostructure geometric parameters with a change rate of 5% to 20%, with an adjustment accuracy of less than 5 nm. It can withstand typical nanoimprinting pressure and is particularly suitable for hot and soft imprinting. Dynamic adjustment significantly reduces the cost of template remanufacturing and improves R&D iteration efficiency.

The application discloses an antifouling and antibacterial drag reduction agent and a preparation method and application thereof. The antifouling and antibacterial drag reduction agent comprises double-charge modified organic nanoparticles, nanocarbon materials and polydimethylsiloxane, and is prepared through the following steps: providing double-charge modified organic nanoparticles; dispersing the double-charge modified organic nanoparticles and the nanocarbon materials in a mixed solvent to obtain a nanosolution; mixing the nanosolution with polydimethylsiloxane and fully stirring to obtain the antifouling and antibacterial drag reduction agent. The organic nanoparticles and the nanocarbon materials are cooperated to generate a multi-level nanostructure, and the multi-level nanostructure is cooperated with low-surface-energy polydimethylsiloxane to form super-hydrophobic nanomaterial, so that the drag reduction performance is improved, and the double-charge groups on the surface of the organic nanoparticles have antifouling and antibacterial effects.

A nucleic acid-based nanostructure having a pre-defined geometrical shape is disclosed which encapsulates at least one active agent. The nanostructure comprises at least one force or pressure sensor, which, when activated, allows release of said active agent from said nanostructure.

The application discloses a short-wave infrared high-NA achromatic superlens design method based on Latin square partition and hybrid optimization, and belongs to the technical field of micro-nano optics. Firstly, an electromagnetic response database of a silicon dioxide substrate-silicon nanometer cylindrical unit is constructed, covering a 2.1-2.3-micron wavelength band; then equal-area ring-belt-fan partition is adopted in combination with Latin square wavelength distribution, so that multiple wavelengths are uniformly distributed in the ring-belt and sector directions; a high-NA evaluation function containing a radial quadratic position weighting factor is constructed, so as to strengthen the optimization weight of the edge phase of the lens; finally, a genetic algorithm-pattern search three-stage hybrid collaborative optimization is executed, and the optimal nanometer structure size distribution is obtained through global search, local convergence and pixel-level discrete fine adjustment. The application can significantly suppress wavelength crosstalk and chromatic aberration, realizes broadband achromatic focusing under the condition of a numerical aperture NA=0.915, and the focal length variation coefficient is only 3.45%, the focused light spot is close to the diffraction limit, and the application is suitable for short-wave infrared high-NA imaging applications such as gas detection and environmental monitoring.

This invention discloses a method and apparatus for preparing nanoscale AG glass using a magnetron sputtering composite mask layer, relating to the field of glass manufacturing technology. The specific steps are as follows: pretreating the glass substrate; using a silicon target, depositing a SiO2 / Si3N4 composite film on the glass surface under mid-frequency magnetron sputtering conditions by adjusting the flow ratio of oxygen and nitrogen; optimizing the composition, thickness, and structure of the composite mask layer; achieving rapid selective etching of the SiO2 layer using an etching solution; forming a nanoscale uneven structure through etching under the protection of the mask layer; removing the residual mask layer; and post-processing the glass substrate to obtain the finished product. This invention, through sputtering parameter optimization, introduces carbon and oxygen elements into the Si3N4 layer, improving the density and crystallinity of the Si3N4 layer, reducing its etching rate, ensuring complete removal of the SiO2 layer, avoiding excessive etching of the Si3N4 layer, and ensuring controllable formation of the subsequent nanostructures.

This invention relates to the field of organic photovoltaic (PV) device technology, specifically to an organic PV device based on disk-shaped liquid crystal molecules, its fabrication method, and its applications. The organic PV device based on disk-shaped liquid crystal molecules provided by this invention comprises an anode substrate, a hole transport layer, an active layer, an electron transport layer, and a metal cathode stacked sequentially. The active layer is composed of a donor material, an acceptor material, and a benzo[a]phenanthrene disk-shaped liquid crystal derivative. The benzo[a]phenanthrene disk-shaped liquid crystal derivative self-assembles into a two-dimensional columnar superlattice nanostructure. The benzo[a]phenanthrene disk-shaped liquid crystal derivative has the structure shown in Formula I and / or Formula II, where R1 and R2 independently comprise a cycloalkane-furanyl or adamantyl group. Based on the self-assembly behavior of the benzo[a]phenanthrene disk-shaped liquid crystal derivative, this invention constructs an ordered columnar superlattice structure by controlling its steric hindrance and dipole interactions, significantly improving the charge transport efficiency and energy conversion efficiency of the device.

This invention provides a permeable photocatalytic nano-antibacterial agent, its preparation method, and its application. The agent uses graphitic carbon nitride nanosheets as the core, with a molecular weight of 10 encapsulated on their surface. 3 ~10 7 The hyaluronic acid nanoparticles form nanostructures with a particle size of 200-400 nm. The nano-graphite phase carbon nitride, with its sharp-edged, sheet-like structure, can physically disrupt drug-resistant bacterial biofilms. Hyaluronic acid enhances the stability of the nano-antibacterial agent in the physiological environment and is degraded by hyaluronidase within the drug-resistant bacterial biofilm, thus disrupting the biofilm's structural stability and promoting efficient penetration and accumulation of the antibacterial agent within the biofilm. Under laser irradiation, the nano-graphite phase carbon nitride catalyzes the generation of reactive oxygen species, synergistically achieving efficient biofilm removal. This nano-antibacterial agent possesses excellent solution stability, biosafety, and photocatalytic activity, making it suitable for treating diseases related to drug-resistant bacterial biofilm infections.

An optical apparatus may include an illumination system configured to emit illumination light to a measurement object, a photodetector configured to detect light from the measurement object, and based on the measurement object including a three-dimensional nanostructure and a substrate, and the substrate including a first surface on which the three-dimensional nanostructure is mounted and a second surface that opposes the first surface, a meta deflector configured to be provided on the second surface of the substrate. The illumination system may be configured to emit the illumination light to be obliquely incident on the meta deflector, and the meta deflector may be configured to negatively deflect the illumination light.

The present disclosure relates to a method for obtaining a miniaturised structure from a bulk anisotropic material, the method comprising: forming, by way of patterning the bulk anisotropic material, a miniaturised structure in an upper surface of a bulk anisotropic material; removing bulk anisotropic material around the miniaturised structure to form a pillar including the miniaturised structure on an upper surface thereof, wherein the upper surface of the pillar is laterally isolated from the surrounding bulk anisotropic material; etching the pillar below the upper surface to reduce a perimeter of at least part of the pillar below the upper surface to thereby form a bottom profile beneath the upper surface, wherein the anisotropic properties of the bulk material result in anisotropic etching of the material of the pillar.

The application belongs to the technical field of biosensing and specifically relates to a biosensor for detecting active acetylcholinesterase and application thereof. The biosensor comprises nanotubes with nanometer apertures at tips for generating current blocking signals; and a ring bundle DNA tetrahedron carrier for loading a solution containing active acetylcholinesterase to be detected, wherein the ring bundle DNA tetrahedron carrier is TDN1 or TDN4, the sequences of the four DNA single strands in TDN1 are shown as SEQ ID NO. 1 to SEQ ID NO. 4, and the sequences of the four DNA single strands in TDN4 are shown as SEQ ID NO. 1, SEQ ID NO. 3, SEQ ID NO. 5 and SEQ ID NO. 6. The application utilizes a closed-loop DNA tetrahedron nanostructure anchored at two ends of an aptamer to generate a difference in current signals in a nanometer hole before and after the active AChE is combined, so that high-sensitivity and high-selectivity detection of the active AChE at a single-molecule level is achieved.

Compositions containing a nucleic acid nanostructure having a desired geometric shape and immunostimulatory agent(s) bound to its surface are provided. The nanostructures can be, for example, in the form of a 6-helix bundle, or icosahedron, or a pentagonal bipyramid. The nanostructure design allows for control of the relative position and / or stoichiometry of the immunostimulatory agent(s) bound to its surface. The 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 a TLR agonist, such as a TLR9 agonist. The immunostimulatory compositions may thus be useful as immunogens, vaccines, adjuvants, and the like. Methods of inducing immune responses, and for targeted induction of TLR activation are also provided.

A capture construct for capturing a plurality of analytes of a biological sample includes a nanostructure backbone, at least a first orientation indicator and a second orientation indicator, and at least a first plurality of capture regions on the nanostructure backbone. Each capture region includes at least one affinity capture reagent configured to capture one of the plurality of analytes.

A device usable in fluorescently determining a type, presence and / or level of a bioanalyte in the tissue or the organ of the subject, which is configured to contact a tissue or an organ of a subject, and a method of detecting a presence and / or level of a bioanalyte in a tissue or an organ of a subject using the device, are provided. The device has a substrate featuring one or more sensing area(s) each including one or more nanostructures having associated therewith at least one sensing moiety which is a capturing bioanalyte-specific substance. Once the device is contacted with the tissue or organ, or a portion thereof, the device is contacted with a labeling bioanalyte-specific substance in which a labeling agent is attached to a bioanalyte-specific substance.

The application discloses preparation and application of a multi-level structure composite electrode material. The electrode material comprises a perovskite-fluorite structure oxide and nanoparticles; the chemical formula of the perovskite-fluorite structure oxide is Pr 1‑x Ba x Co 1‑y‑z Fe y Ti z O 3‑δ ‑Ln 0.2 Ce 0.8 O 2‑δ , wherein Ln=Gd, Sm, La, 0 3‑δ <0.5, and the oxygen vacancy content is δ; the loading of the nanoparticles is 0-10 wt.%, and the end value 0 is excluded. The electrode material has a multi-level nanostructure, can effectively expand a three-phase interface, increase reaction sites, has good conductivity and CO2 poisoning resistance, and has catalytic activity of both oxygen evolution reaction and carbon dioxide reduction reaction, and can be used as both an anode material and a cathode electrode material of a SOEC.

A substrate having at least one surface that is bounded by microstructures and / or nanostructures and having a filling mass within the bounded surface, and the filling mass forms on or on top of the boundary an apparent static contact angle of ≥ 30°, preferably ≥ 35°, more preferably ≥ 40° and particularly preferably ≥ 42°.

The invention relates generally to optically high transparency and high haze structures and, more particularly, to plastic, e.g., polymer, and glass structures having a sub-wavelength texture formed on a surface thereof, which is effective to impart the optical properties of high transparency and high haze to the structures. The texture is in a grass-like or needle-like form. Additionally, the optically high transparency and high haze structures may include a transparent conductor. Furthermore, the glass structures may exhibit a self-cleaning function.