208 results about "Nanoscopic scale" patented technology

The invention discloses a cross-scale rock elastic mechanical parameter measurement method and system, and relates to the technical field of rock measurement, and the method comprises the following steps: obtaining nano-scale rock elastic mechanical parameters and micro elastic-plastic deformation of rock through a nanoindentation experiment, so as to construct a molecular dynamics model of the rock; according to the molecular dynamics model of the rock, using an inclusion homogenization theory to upgrade the rock elastic mechanics parameters of the nanoscale to the rock elastic mechanics parameters of the centimeter scale, so as to construct a rock elastic mechanics parameter conversion model, and using environmental data in an in-situ environment for correction; and inputting the nano-scale rock elastic mechanical parameters into the corrected rock elastic mechanical parameter conversion model to obtain centimeter-scale rock elastic mechanical parameters. According to the invention, centimeter-scale rock elastic mechanical parameters in a deep stratum in-situ environment can be accurately measured.

A preparation method of porous hafnium carbide superhigh-temperature ceramic is characterized by comprising the following steps: dispersing graphene oxide in a solvent to form a graphene oxide dispersion liquid, mixing a monomer hafnium source solution with the graphene oxide dispersion liquid, and carrying out hydrothermal treatment on a hafnium oxide carbon precursor network structure to obtain the porous hafnium carbide superhigh-temperature ceramic. The organic-inorganic hybrid precursor is subjected to two-stage heat treatment, the first stage is inorganic treatment, the second stage is carbon thermal reduction reaction, and the porous hafnium carbide ultrahigh-temperature ceramic material is obtained. Graphene oxide is used as a structure-directing agent and an in-situ carbon source, a monomer hafnium source is uniformly anchored on the surface of a GO sheet layer on the molecular scale, an organic-inorganic hybrid precursor is formed, after the precursor is subjected to hydrothermal crosslinking, Hf species and a carbon skeleton are highly mixed on the nanoscale, and the Hf / GO composite material is obtained. And the subsequent carbon thermal reduction reaction can be efficiently completed in a low-temperature interval of 1300-1450 DEG C.

The invention provides a waterproof design method and a long-term performance maintaining method for a reinforced concrete structure. Reinforcing steel bars are arranged in concrete, and the top face of the concrete is covered with a waterproof layer. The method comprises the following steps: determining an essential mechanism of waterproof layer cracking caused by concrete cracking from a microscopic scale; based on the essential mechanism, the width value of the concrete top surface crack is applied to the bottom surface of the waterproof layer as forced displacement in the opposite direction; iteratively calculating the cracking height of the waterproof layer; it is ensured that the remaining uncracked solid thickness of the waterproof layer is still larger than the minimum solid thickness meeting the waterproof requirement under the condition that concrete cracking is not considered. And at the moment of initial cracking of the concrete, the longitudinal tensile thickness of the waterproof layer has obvious influence on the final cracking height of the waterproof layer, but the calculation result of the cracking height tends to be stable when the thickness is close to the nanoscale. According to the invention, the long-life design of the waterproof layer is facilitated, and the method is applicable to bridges, roads, tunnels, buildings and hydraulic structures.

The invention belongs to the field of quantum sensors, and discloses a diamond spin quantum sensor and a preparation method thereof. The preparation method comprises the following steps: cleaning and polishing a monocrystal diamond substrate; a microwave plasma chemical vapor deposition method is adopted for preparing a diamond film with the nitrogen-vacancy color center density larger than 10 < 16 > cm <-3 > on the single crystal diamond substrate; and preparing an anti-ferromagnetic NiO film on the diamond film by adopting a radio frequency magnetron sputtering method to obtain the diamond spin quantum sensor. The diamond spin quantum sensor disclosed by the invention contains a high-concentration nitrogen-vacancy color center diamond film, and nitrogen-vacancy color center measurement has extremely high spatial resolution, so that the change of a nano-scale magnetic field can be detected; the diamond spin quantum sensor is applied to precise measurement of the magnetic moment of an antiferromagnetic film and the magnetic coupling effect of an antiferromagnetic / ferromagnetic heterojunction interface. And the preparation method is simple, economical and applicable, and provides possibility for application of the diamond nitrogen-vacancy color center material in the field of quantum magnetic sensors.

The invention provides a method and a device for in-situ determination of quartz oxygen isotope in shale, and relates to the technical field of geological prospecting, the method comprises the following steps: crushing or cutting a shale core sample to obtain a core square block, embedding the core square block into a metal target, and pre-treating to obtain a shale sample; scanning and photographing the surface of the shale sample according to a preset mode, splicing a reflected light panoramic image, judging quartz attribute characteristics and cause types of a test target through observation, and delineating the position of the test target; positioning the position of a test target according to the morphology characteristics of the test target and different surrounding reference objects in combination with the reflected light panoramic image, and performing in-situ oxygen isotope test on the test target by using a nanoscale secondary ion probe mass spectrometer to obtain in-situ oxygen isotope test data; and checking each in-situ oxygen isotope measuring point pit position of the shale sample, performing quality control on in-situ oxygen isotope test data according to a checking result, and determining an in-situ oxygen isotope measuring result.

The invention relates to the technical field of scanning tunneling microscopes, and discloses a scanning probe measuring device and a control method for pinpoint-to-pinpoint imaging, two pinpoints are oppositely arranged, and the pinpoints are accurately controlled and movably positioned based on a basic working mode of a scanning probe microscope. A needle tip-tunnel junction-needle tip working structure is established, after bias voltage is applied externally, electron tunneling between needle tips only relates to a small number of atoms or single atoms at the tail ends of the needle tips, the tunneling effect that the small number of atoms contribute to electrons is achieved, and therefore small number or single atom imaging is achieved. The device can be rapidly transplanted to application scenes of low temperature, strong magnetic field, optical measurement and the like, the double-needle-point structure is regulated and controlled through piezoelectric displacement or an electric field, tunnel junction width and barrier height can be optimized in real time, and research on dynamic construction and dynamic electrical characteristics of nanoscale tunnel junctions is greatly facilitated.

The invention relates to the field of oil and gas reservoir exploration and development, and discloses a shale oil reservoir carbon dioxide injection exploitation effect prediction method and device, and the method comprises the steps: obtaining the characteristic parameters of a target core and the engineering parameters of a target block; constructing molecular dynamics models corresponding to different minerals in the target rock core according to the characteristic parameters and the engineering parameters; determining a target relational expression according to a simulation result of each molecular dynamics model; based on a target pore network model and the target relational expression, the exploitation effect of carbon dioxide injection of the shale oil reservoir is determined, and the target pore network model is obtained based on the characteristic parameters. Due to the fact that the flow rule of fluid in the nanoscale pores, nanoscale effect changes and differences among different mineral types are considered when the exploitation effect of the shale oil reservoir injected with the carbon dioxide is predicted, the accuracy of prediction of the exploitation effect of the shale oil reservoir injected with the carbon dioxide can be improved.

The invention relates to a nanoindentation and reliability characterization technology thereof, in particular to a heterogeneous material welding reliability characterization method applied to a brush type sealing structure. By means of the nanoindentation technology, mechanical properties such as hardness, elasticity modulus and plastic deformation of the welded joint are obtained by analyzing indenter deformation and indentation morphology. Meanwhile, indentation testing is carried out on different positions of the brush type sealing welding joint, and the performance comparison condition of all areas of the welding joint is obtained. Compared with a traditional reliability characterization means, the device and the method have the advantages that various areas of the heterogeneous welding joint including a base material, a heat affected zone and a fusion zone are tested under the nanoscale, various material performance indexes such as hardness, elasticity modulus and plastic deformation are measured at the same time, and the device and the method have high-precision and multifunctional testing capacity and are suitable for popularization and application. And moreover, the joint cannot be damaged or other properties cannot be influenced, and compared with a room-temperature stretching result, the nanoindentation technology has relatively high reliability and repeatability, and an accurate characterization result is obtained.

The invention provides a method for analyzing and determining an aggregation structure in a condensed state, which comprises the following steps: step 1, measuring a same condensed state substance sample by adopting at least two structure determination means with different principles, at least another kind of structure measurement means is used for obtaining nanoscale or mesoscale aggregation structure information so as to obtain multi-source structure measurement data representing different structure hierarchies. According to the method, multi-scale structure measurement data is obtained by adopting at least two structure measurement means with different principles for the same condensed substance sample, and structure information of different scales is subjected to combined treatment in the same analysis process; and the structural characteristics of the aggregation structure on the atomic scale, the nanoscale and the mesoscale can be simultaneously included in an analysis range, so that the characterization integrity of the overall characteristics of the aggregation structure in the condensed state is improved.

The invention discloses a manufacturing method of a double-sided micro-nano structure, which can realize high absorptivity of a visible light wave band in a space environment based on the double-sided micro-nano structure, so that some structural components of a satellite are enabled, and the manufacturing efficiency of ultra-black structural components of the satellite is greatly improved. The double-sided micro-nano structure is formed by combining three functional structure modules and comprises a nano-scale anti-reflection structure, a substrate and a micron-scale light trapping structure. The nanoscale anti-reflection structure is a dot-matrix type nanocone structure, and the interface reflectivity can be greatly reduced. The micron-scale light trapping structure is of a dot-matrix pyramid structure, and absorption of light entering the double-face micro-nano structure is increased through multiple times of reflection. The substrate provides an attachment space for the nano anti-reflection structure and the micron light trapping structure, and provides the mechanical strength of the whole double-sided micro-nano structure. And the double-sided micro-nano structure is integrally manufactured and formed based on an imprinting process.

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.

The invention relates to a preparation method of an epitaxial structure with micron holes and the epitaxial structure, and belongs to the technical field of epitaxial wafer manufacturing. Comprising the following steps: sequentially growing an AlN buffer layer, a Si-doped 3D AlN layer containing a nano-scale air gap, a high-temperature AlN layer, an n-type AlGaN layer, a multi-quantum well active layer, an electron barrier layer, a p-type AlGaN layer and a p-type GaN contact layer on the surface of a substrate; etching a region corresponding to the n electrode in the epitaxial structure until the air gap is exposed; growing a SiO2 protective layer; enlarging a nano-scale air gap to a micron-scale air gap through electrochemical etching; and preparing a p electrode metal layer on the p-type GaN contact layer, and preparing an n electrode metal layer on the micron-level air gap of the Si-doped 3D AlN layer to obtain an epitaxial structure with micron holes. According to the invention, the nanoscale fusiform air gap is expanded to the micron scale by using the dry etching process and the electrochemical etching process, so that the light extraction efficiency is improved.

The present invention relates to the field of optical nano-imaging bioassays and discloses a bioassay and optical imaging method based on a one-dimensional nanophotonic platform. The method comprises the following steps: (1) a beam of white light is irradiated along a non-periodic direction on a one-dimensional nanostructure, and the generated scattering and diffraction signals are received using a microscope or mobile phone; (2) defects in the one-dimensional nanostructure disrupt the distribution of the local field, reduce the scattering intensity of the nanostructure, and change the color of the one-dimensional nanostructure; (3) in the visible light region, in addition to a scattering peak, another new diffraction peak can improve the sensitivity of the spectral response, allowing the measurement of size differences of 20 nanometers; (4) by modifying antibodies on the surface of the one-dimensional nanostructure, the detection of a single virus can be achieved, which is beneficial for the early diagnosis of in vitro diseases, especially in underdeveloped areas and areas with harsh biological experimental conditions. The technology is simple to operate, low-cost, and conducive to the rapid and high-throughput detection of nanoscale samples.

The application discloses a high-compression-strength high-plasticity iron-based alloy and a preparation method and application thereof, and relates to the technical field of high-performance metal structural materials.The application provides an element composition of the high-compression-strength high-plasticity iron-based alloy; the microstructure of the alloy comprises a Fe2Nb Laves phase network structure distributed along grain boundaries and an intracrystalline nanometer-scale composition modulation structure; the room-temperature compression yield strength of the high-compression-strength high-plasticity iron-based alloy is not less than 2000 MPa, and the compression fracture strain is not less than 30%. The application further provides a preparation method and application of the alloy. The application forms a multi-level micro-nano strengthening structure in-situ in an alloy block through a specific non-equilibrium solidification process, so that the alloy simultaneously has ultrahigh strength and high plasticity under compression load, and can be applied to high-pressure-resistant structural parts, and effectively solves problems of a complicated preparation process of traditional high-strength materials, high strength necessarily accompanied by low plasticity and the like.

The present application relates to the technical field of silver-coated copper powder, in particular to a silver-coated copper powder particle with uniform plating thickness and a preparation method thereof. The method comprises raw material pretreatment, plating solution preparation, plating, electroplating solution preparation, electroplating and post-treatment. First, the non-selective deposition characteristics of chemical plating are used to build a complete and non-porous thin silver layer on the surface of the copper powder, ensuring 100% conductive coverage. Then, the uniform conductive layer is used as a substrate to precisely thicken through a highly controllable electroplating process. The synergistic effect of electric field and fluid dynamics is used to achieve high uniformity and structural densification of the silver layer in the nanometer scale. Through the precise relay of "chemical plating bottoming" and "electroplating thickening", the inherent contradictions of traditional single methods in coverage, uniformity and plating quality are cooperatively overcome.

This invention belongs to the field of advanced manufacturing technology and relates to an electro-spraying method for inducing jets with pre-printed functional layers. Based on electrohydrodynamic effects, a jet is ejected to pre-print complex micro / nano functional structure patterns on a substrate. Then, under the action of an electric field, the jet size and deposition position are induced. Dual nozzles work together to rapidly achieve the same shape as the pre-printed functional layer. The pre-printed functional layer fully adheres to and solidifies with subsequent nanoscale continuous jets, forming a composite micro / nano functional structure. This electro-spraying method uses a pre-printed functional layer to change the distribution of the electric field on the substrate, ensuring the accuracy of the jet deposition position and reducing dimensional errors in the composite micro / nano functional structure process. It has advantages such as low equipment cost, simple process, and short processing cycle, optimizing the micro / nano functional structure and improving the performance and lifespan of nanodevices.

The invention relates to a preparation method of a highly ordered, soft and malleable MXene-based organic-inorganic hybrid superlattice material, which comprises the following steps: carrying out surface modification on hydrochloric acid acidified Ti3C2Tx nanosheet aqueous dispersion by using oleylamine, washing the product with ethanol, drying, and dispersing in trichloromethane; and adding small molecular ligands such as oleic acid into the dispersion liquid, and then carrying out solvent evaporation assembly to obtain the superlattice material with a long-range ordered layered structure. The film shows intrinsic flexibility and can be directly formed into a macroscopic three-dimensional block through physical folding and mold pressing. The mechanical property of the MXene material is fundamentally regulated and controlled through molecular intercalation and ordered assembly, integrated construction from a nanoscale ordered structure to a macroscopic functional material is achieved, and the obtained MXene-based organic-inorganic hybrid superlattice material has electrical conductivity, structural orderliness and good deformability; the method has important application prospects in the fields of flexible electronic devices, deformable electrodes, intelligent sensing and the like.

The application discloses a method for analyzing the existence form of As elements in pyrite based on a combination of multiple methods, which comprises the following steps: S1, selecting pyrite particles containing multiple ring zones as the object to be detected; S2, performing electron probe analysis to circumscribe the further analysis area; S3, judging the substitution property of As to Fe or S to preliminarily determine the existence form of As elements; S4, performing focused ion beam processing and spherical aberration transmission electron microscope analysis to shoot HAADF and ABF images; and S5, analyzing the spherical aberration transmission electron microscope images by using DigitalMicrograph data processing software to analyze the intensity difference of Z contrast microscopic images of different atomic sites and the abnormal atomic space occupation of heavy elements and light elements in the ABF images. The application is based on the combination of electron probe and spherical aberration transmission electron microscope, can finely analyze the existence form of As elements in pyrite from the micron to nanometer scale, and has high reliability and sufficient substantial evidence.

1. The name of the design product: hot field emission scanning electron microscope (8200). 2. The use of the design product: precision scientific instrument for high-resolution topography observation and microstructure analysis of sample surface at nanometer scale. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The application discloses a method and device for testing interfacial water in a Z direction with nanometer scale step by Raman spectrum, and the method comprises the following steps: providing a bottom plate and an upper substrate on the top surface of the bottom plate, modifying the top surface of the bottom plate and the bottom surface of the upper substrate according to the interfacial type of the interfacial water to be tested; the left edge surface of the top surface of the bottom plate is attached to the left edge surface of the bottom surface of the corresponding upper substrate, and a partition is arranged between the top surface of the bottom plate and the bottom surface of the corresponding upper substrate; the partition forms a gap with increasing height between the top surface of the bottom plate and the bottom surface of the upper substrate; the water solution to be tested is added in the gap, the step length of the horizontal movement of the laser Raman is set, the Raman spectrum at different distances in the Z direction is obtained by detection, and the interfacial water condition at different distances in the Z direction is obtained by analysis. The method successfully analyzes the change of the interfacial water structure at different distances in the Z direction with nanometer scale for the first time.

The invention discloses a near-field terahertz nonlinear optical effect excitation detection method and system. A femtosecond laser space-time shaping technology is combined, a strong terahertz pulse is generated based on a femtosecond laser filament, the strong terahertz pulse is coupled with a tapping mode atomic force microscope, and space-time matching of probe vibration and the terahertz pulse is accurately controlled by using a synchronous sampling method, so that the time-space matching of the probe vibration and the terahertz pulse is realized. Mismatch between the low-repetition-frequency strong-field terahertz pulse and the vibration frequency of the near-field microscope probe is overcome, and strong-field terahertz near-field coupling and detection are achieved. The local field enhancement effect of the tip of the nanoprobe can realize nanoscale focusing (peak field intensity reaches MV / cm magnitude) of a terahertz field at a probe-sample gap, the near-field nonlinear interaction is remarkably enhanced, the diffraction limit is broken through, and the nanoscale spatial resolution is realized. According to the method, the excitation detection efficiency and the spatial resolution of the terahertz nonlinear effect are remarkably improved, and accurate excitation, characterization and regulation of the nonlinear optical effect of the sample can be realized.

The invention discloses a method for quantitatively detecting uranyl ions by adopting a silicon-based carbon dot material and application of the method, and belongs to the field of nano composite materials and radionuclide detection. Mixing the silicon-based carbon dot composite material with an acid solution containing uranyl ions, carrying out ultrasonic treatment, detecting the fluorescence intensity of the mixed solution by adopting a fluorescence spectrum, and quantitatively analyzing the uranyl ion concentration according to the uranyl ion concentration and a fluorescence intensity curve. The silicon-based carbon dot composite material is a silicon-based carbon dot material of which the surface is modified by functional groups; the functional groups comprise hydroxyl, carboxyl and amino. The method can generate stable fluorescence response change when acting with uranyl ions, accurate quantitative analysis of uranyl ion concentration can be realized, the silicon-based carbon dot composite material has high uranyl ion detection response speed by means of the synergistic effect of the nanoscale effect and the surface functional group, and detection can be completed in a short time.

The invention discloses a reversible dynamic aperture solid nanopore array based on a temperature-sensitive phase change layer and a preparation method and application of the reversible dynamic aperture solid nanopore array, and belongs to the technical field of single molecule detection and nanostructure regulation, the array introduces the temperature-sensitive phase change layer into the inner wall of a solid nanopore, and when the local temperature crosses the phase transition point of the temperature-sensitive phase change layer, reversible volume change is generated; therefore, the effective aperture of the nanopore is continuously adjustable in a sub-nanometer scale range. An independent micro heating unit and an independent temperature sensing unit are integrated below each nanopore in the array, and single-pore-level accurate temperature control adjustment is achieved in a row-column addressing mode. In combination with ionic current monitoring and an external control module, the aperture can be set in real time according to the size requirements of different target molecules, and dynamic aperture regulation and control with a programmable structure, quick response and good repeatability are realized. The array structure provided by the invention is suitable for single molecule level detection of objects such as multiple types of small molecule pollutants, tumor-related biomarkers, biomacromolecules and the like, and has the advantages of high sensitivity, high flux and wide applicability.

The device is capable of monitoring and controlling the layer-by-layer buildup at the molecular level using an etched FBG. Etched FBG enhances the sensitivity of a traditional FBG by increasing the light interaction with the deposited layers. This enables sub-nanometer thickness monitoring during the buildup process, allowing the detailed study of adsorption and desorption processes. the proposed mechanism can be used as an instrument for probing inter-diffusive behaviour of macromolecules, bio-polymers and proteins at sub- nanometer scale.

A nanoscale temperature detector including a diamond sensing probe with a transverse dimension of at least 200 nanometres and a sensing tip-having a curvature radius of less than 100 nanometres, less than 10 nanometres or less than 1 nanometre, and a plurality of colour centres, whose emission count rate show temperature-sensitive features. The diamond sensing probe has a transverse dimension of at least 200 nanometres and is connected to a to a detector system by means of a mounting structure. A thermal isolation barrier thermally decouples the sensing probe from the detector system.

The invention provides an indium-lead composite oxide nanowire and a preparation method and application thereof, the atomic ratio of In to Pb in the nanowire is 0.1-10, and the diameter of the nanowire is 10-300 nm. In the invention, the two metal components indium and lead generate a synergistic component effect and are applied to the electrochemical reduction process, so that the adsorption and activation of the raw materials are greatly enhanced. Different valence states of lead and indium are mutually adjusted, and the electronic structure of the catalyst is optimized. Meanwhile, more active sites can be exposed by the nanowire structure, and the reaction kinetics process is effectively improved by the three-dimensionally arranged nanoscale structure.

The invention discloses a preparation method of a high-strength and high-conductivity lamellar heterogeneous copper-chromium-zirconium alloy, and belongs to the technical field of preparation and modification of copper alloy materials. According to the method, equal channel angular pressing (ECAP) and an accumulative ply rolling process are combined, CuCrZr alloy subjected to solid solution state and different passes of ECAP treatment is sliced, overlaid, fixed and subjected to one-time ply rolling, metallurgical bonding of the two layers of alloy is achieved, the steps are repeated on metal sheets subjected to ply rolling, accumulative ply rolling can be carried out multiple times, and finally annealing treatment is carried out again. According to the process, an ideal lamellar heterogeneous structure with alternate coarse and fine crystals can be obtained by controlling the size of crystal grains in each layer of alloy, meanwhile, the deformation far larger than that of common rolling can be obtained through multi-pass accumulative ply rolling, the crystal grains are refined to the nanoscale, meanwhile, the influence of a high-density crystal boundary on the electric conductivity is balanced, the tensile strength and the electric conductivity are synchronously improved, and the service life of the alloy is prolonged. The deformation aging process is far beyond the conventional deformation aging process.

The invention discloses a method for preparing a composite nitriding coating on the surface of titanium alloy, and belongs to the technical field of surface engineering and coatings. The coating at least comprises a nitride strengthening layer and a hard coating in sequence from inside to outside. The hard coating comprises a composite coating, the composite coating comprises a nano multilayer structure formed by alternately depositing A layers and B layers on the surface of the nitride strengthened layer, the A layers are TiAlN layers, the B layers are TiSiC-N layers, and the TiSiC-N layers have nano-scale (Ti, Si) (C, N) composite phases. According to the method, one or more hard coatings are deposited on the surface of the nitride layer through the composite process of double-glow combined active screen plasma nitriding and post-treatment hard coating deposition, and the problems that a single nitriding layer is insufficient in hardness, limited in wear resistance and the like are successfully solved. And two procedures are continuously finished in the same vacuum cavity, so that the interlayer bonding strength is ensured, and the production efficiency is improved.

The application discloses 3D printing aramid wave-absorbing honeycomb material and a preparation method and application thereof, utilizes wave-absorbing agents with nano-scale structure and excellent electrical properties and aramid nanofibers with excellent mechanical properties to be tightly combined through hydrogen bonds, and advantages that the surface of the wave-absorbing agents and the aramid nanofibers is easy to produce a strong network cross-linking structure, and the mechanical properties of the 3D printing aramid wave-absorbing honeycomb material are improved, a new aramid nanofiber-based material with good wave-absorbing performance and mechanical properties is developed, and the defects of the current wave-absorbing honeycomb material, such as a large weight of a surface coating and easy peeling, are solved, and the application demand in the fields of aerospace, radar stealth technology and the like can be met. The 3D printing technology is used to print aramid wave-absorbing honeycomb materials with different sizes and densities, energy consumption is low, printing precision is high, the process is simple, the 3D printing aramid wave-absorbing honeycomb material has excellent mechanical properties, good wave-absorbing performance, strong structure designability, and a wide application prospect.

The invention relates to a cross-wavelength response integrated biosensor which comprises a plurality of periodic units, and each periodic unit comprises a substrate layer, a dielectric layer and a metal layer which are sequentially arranged from top to bottom; the metal layer comprises a plurality of metal structure units, each metal structure unit comprises a metal wire and two discrete metal split rings, and the metal wire and the metal split rings are formed by nano particle arrays. According to the invention, a plurality of independent sensors are not needed, and high-sensitivity sensing response of the THz wave band and the optical wave band can be realized only by a single integrated structure; in a single sensor, high-sensitivity detection of biomolecules from small to sub-nanometer scale and from large to micron scale can be realized at the same time; on the microscopic scale, the THz resonance sensitivity of the sensor can reach 63.9 GHz / RIU; on the nanoscale, when the incident wavelength is 785 nm, the SERS enhancement factor of the sensor is 8.8 * 10 < 4 >; the response performance of the biosensor can be realized by optimizing the structural parameters, geometrical shapes, unit arrangement and the like of the metal layer.