24 results about "Plasma resonance" patented technology

The invention provides a method for detecting an external vesicle marker through high-flux nano plasma exciting light immune color development, and belongs to the technical field of human extracellular vesicles. After a serum sample is subjected to centrifugal treatment, the serum sample and a CD81 capture antibody substrate are incubated, and the particle size distribution of the vesicles is monitored in real time; a zwitterionic polymer modified gold nanoparticle LAM detection probe and a polyethylene glycol modified silver nanoparticle LprG detection probe are prepared to be specifically combined with a vesicle surface antigen, a chromogenic enhancement solution is adopted to induce a plasma resonance signal, and full-hole scanning imaging is carried out; and constructing a double-layer game optimization model to cooperatively optimize the detection sensitivity and the signal stability, carrying out weighted summation on normalized signals of the particle size subgroups to obtain comprehensive detection signal intensity, comparing the comprehensive detection signal intensity with a threshold value, and outputting a final judgment result. The technical problem that quantitative accuracy is affected by signal intensity deviation caused by vesicle particle size difference in outer vesicle marker detection is solved.

The invention provides an ultrasonic parameter adaptive adjustment and cleaning evaluation method in a wafer cleaning process, and relates to the technical field of semiconductor manufacturing, and the method comprises the steps: calculating sound field energy distribution through collecting wafer surface temperature distribution and cavity vibration response data; based on the temperature gradient and the sound intensity gradient, calculating the micro-flow field distribution of the cleaning fluid, and establishing a cavitation bubble collapse characteristic matrix; recognizing and cleaning a dead zone through singular value decomposition of the feature matrix, and controlling a piezoelectric transducer to generate focused ultrasonic waves; meanwhile, the plasma resonance sensor is used for monitoring the surface adsorption characteristic change and evaluating the cleanliness. According to the invention, real-time self-adaptive adjustment of ultrasonic cleaning parameters is realized, and the cleaning uniformity and efficiency are improved.

The invention provides a paper-based SERS (Surface Enhanced Raman Scattering) substrate based on ultrahigh-activity silver nanowires as well as a preparation method and application of the paper-based SERS substrate, and belongs to the technical field of surface enhanced Raman spectrum detection. Silver nanowires which are arranged in order are fixed on the surface of hydrophobic filter paper to regulate and control gaps of the silver nanowires so as to enhance the local electromagnetic field coupling effect, target molecules are induced to be enriched in situ by utilizing the hydrophobic characteristic of the hydrophobic filter paper, and a high-density Au / Ag heterogeneous interface is constructed on the surface of the etched silver nanowires in combination with aqua regia etching and AuNPs self-assembly technologies. The SERS signal intensity is further improved through the synergistic effect of bimetallic plasma resonance, the repeatability of the substrate is improved through neat arrangement of the silver nanowires, the stability is improved by wrapping the silver nanowires with the gold nanoparticles, the detection sensitivity of the paper-based SERS substrate is further improved, and the paper-based SERS substrate is low in preparation raw material price, can be manufactured in a large scale and is suitable for industrial production. The trace substances are very convenient to detect and can be taken at any time when being used.

The invention discloses a UCNPs modified AgNPs (at) MgAl LDH composite material and a preparation method of the UCNPs modified AgNPs (at) MgAl LDH composite material. According to the preparation method, MgAl LDH is synthesized through a solvothermal method, AgNPs is loaded on the MgAl LDH through a reduction precipitation method, and the AgNPs-coated MgAl LDH composite material is successfully prepared; liYF4: Yb and Tm-coated LiYF4 UCNPs are prepared at the same time, the LiYF4: Yb and Tm-coated LiYF4 UCNPs are subjected to hydrophilic modification by adopting a ligand exchange method, and finally the LiYF4: Yb and Tm-coated LiYF4 UCNPs and the LiYF4: Yb and Tm-coated LiYF4 UCNPs are compounded to prepare the AgNPs-coated MgAl LDH / According to the ternary composite system, through surface plasma resonance (SPR) of AgNPs, the up-conversion luminescence effect of UCNPs and the layered structure synergistic effect of MgAl LDH, efficient degradation of TCH can be achieved, and meanwhile a new thought is provided for the near-infrared driven environment restoration technology.

The application discloses a kind of induction logging instrument systems and acquisition method based on plasma optical fiber sensor, including ground current emission source and at least one well in current emission source and well in receiving acquisition device, the well in receiving acquisition device is connected with the optical system of induction signal detection being arranged on ground, the optical system is composed of sequentially connected broadband light source, polarizer, polarization controller, fiber optic circulator and spectrum analyzer, the fiber optic circulator is connected with well in receiving acquisition device and spectrum analyzer respectively, at least two plasma resonance optical fiber sensing probes are arranged in the well in receiving acquisition device. There is no mutual interference or crosstalk between plasma resonance optical fiber sensor, optical fiber sensor and emission power supply and antenna, and it is not easy to be disturbed by environmental electromagnetic noise, and multi-channel large data high-speed real-time transmission can be realized by using armored photoelectric composite cable connected with each well in receiving acquisition device.

This invention provides a frequency-domain shaping laser-plasma resonance sintering system using aerosol jetting. The localized strong electromagnetic field excited by LSPR can induce electron cloud rearrangement and chemical bond reconstruction at the interface of adjacent nanoparticles, forming an atomic-level interdiffusion transition layer. This invention precisely controls the laser wavelength through frequency-domain shaping technology to match the LSPR characteristic peaks of the nanoparticles, maximizing the local electromagnetic field enhancement effect. This allows for the completion of nanoparticle melting and necking formation at ultra-low laser power, overcoming the energy efficiency limitations of traditional post-processing techniques such as high-temperature furnace heating. Simultaneously, this process is completed within the femtosecond to picosecond timescale, avoiding component segregation caused by high-temperature thermal diffusion and significantly improving the bonding strength of the nanoparticle interface. Furthermore, it achieves nanoscale selective heating, completing particle melting and necking formation at ultra-low laser power, avoiding overall thermal damage.

A plasmon-enhanced photocatalyst comprising: (a) a support substrate; and (b) a surface plasma resonance (SPR) metal coupled to / loaded on the support substrate and a method of making the same are described. The SPR metal is a plasmonic metal and is coupled to / loaded on the support substrate by embedding the SPR metal into and onto surfaces of the support substrate. A method of using plasmon-enhanced photocatalysis for the degradation of halogenated organic molecules and compounds in an aqueous solution is also described.

The invention belongs to the technical field of metal nano material preparation, and discloses metal nano particles with adjustable size, structure and performance as well as a preparation method and application thereof. According to the method, a primary product containing specific ligands is firstly prepared through a co-reduction reaction and then subjected to post-synthesis heat treatment without additional addition of metal salts. According to the method, internal reconstruction and curing of a primary product are driven through additive-free heat treatment, and the limitation that a metal source needs to be additionally arranged in a traditional seed growth method is broken through. By regulating and controlling heat treatment conditions, the size of the product can be continuously controlled, and the evolution of an electronic structure of the product from a non-metal characteristic to a strong metalloid plasma resonance absorption characteristic is realized. The obtained nanoparticles have high structural integrity and strong metalloid performance especially in a critical size range of 2-3 nanometers, show a synergistic enhancement effect in the aspects of photothermal conversion efficiency and SERS sensitivity, and are suitable for the fields of photothermal therapy, sensing detection, catalysis and the like.

The invention discloses a core-shell parameter optimization SERS (Surface Enhanced Raman Scattering) signal regulation and control method, and particularly relates to the technical field of nano materials, comprising the following steps: S1, defining optical parameters of a target structure; s2, multi-source signals are synchronously acquired in real time; s3, generating fed-batch decision logic; s4, performing regulation and control execution and response evaluation; and S5, terminating judgment when the performance reaches the standard. According to the core-shell parameter optimization SERS signal regulation and control method disclosed by the invention, preparation of a core-shell nano structure is converted from open-loop empirical operation to closed-loop quantitative regulation and control. A geometric parameter combination with the strongest theoretical enhancement effect is screened out in advance through electromagnetic simulation, and the optical formant position of the geometric parameter combination is defined as a target value of the preparation process, so that the synthesis process has clear and quantitative optical performance guidance; raman characteristic peak intensity reflecting SERS signal intensity, plasma resonance peak position reflecting structure formation and particle size polydispersity index reflecting particle aggregation state are synchronously acquired in situ.

The application provides a data processing system and method for textile auxiliary production, which generates a dynamic gradient data set by monitoring the solution flow state of the textile auxiliary; acquires a reflection signal parameter set of a surface of a textile substrate to be processed under electromagnetic excitation of a preset frequency band, constructs an energy distribution map based on resonance frequency offset data associated with plasma resonance effect in the reflection signal parameter set, and dynamically couples the energy distribution map with the dynamic gradient data set to generate a time-space evolution data set, extracts infiltration dynamic fluctuation data, and generates a latent variable set representing the molecular structure characteristics of the textile auxiliary; in combination with a preset infiltration rate constraint condition, a target parameter data set is generated for data processing of textile auxiliary production; the application breaks through the limitation of the disconnection between static surface energy detection and dynamic auxiliary flow analysis in the prior art, realizes real-time dynamic adaptation of the substrate surface energy and the auxiliary molecular characteristics, and improves the infiltration uniformity and process control precision.

The invention relates to an SPR device (100) comprising a detection platform (110) with a detection area (111) and an optical component (112) attached to the underside (111a) of the detection area (111), wherein the optical component (112) has a light-entry side and a light-emission side for receiving an incident light (LIN) and for correspondingly providing an output light (LOUT); a light source (120) for generating the incident light (LIN); and an optical detector (130) for receiving the output light (LOUT), wherein the optical component comprises an integrated module having a structure for guiding the incident light, a reflecting section, and a structure for guiding the reflected light, the reflecting section being attached to the underside (111a).

The invention relates to the technical field of temperature control in a cell SPR (Surface Plasmon Resonance) imaging process, in particular to a device for controlling the temperature of a buffer solution to be constant in an imaging process and a use method. After the surface temperature of the chip and the temperature of the buffer solution are constant through the temperature control device, the SPRM experiment is executed, and the cells can be kept to be combined with and dissociated from drug molecules at the constant temperature. On the basis of the surface plasma resonance imaging technology, a buffer solution heating and refrigerating temperature control device is designed, on one hand, the temperature of the environment where cells are located in the SPRM experiment process is more constant, and therefore noise generated by cell environment temperature changes is reduced, and the influence of baseline drift on the experiment is reduced; on the other hand, a new application direction is developed, namely, the interaction between cells and drug molecules and the like under the environment temperature or even in the low-temperature state in the SPRM experiment is developed.

The invention discloses a preparation method of a molybdenum disulfide-gold nano composite material based on ice bath and ultrasonic stripping, and belongs to the technical field of nano enzymes. Molybdenum disulfide powder and a dispersion stabilizer are dispersed and subjected to ultrasonic stripping treatment, and suspension liquid is obtained; carrying out gradient centrifugal separation on the suspension to obtain a precipitate; dispersing the precipitate in ultrapure water, carrying out ultrasonic treatment, adding a surfactant, and uniformly stirring to obtain a mixed solution; and heating the mixed solution, slowly dropwise adding a gold chlorate aqueous solution, carrying out a first reaction and a second reaction, and then carrying out gradient centrifugation to obtain the composite material. Through cooperation of the molybdenum disulfide nanosheets and the gold nanoparticles, the gold nanoparticles are loaded on the surfaces of the molybdenum disulfide nanosheets, and the gold nanoparticles improve the stability of the molybdenum disulfide nanosheets, so that molybdenum disulfide is not easy to decompose in water. Due to the surface plasma resonance effect of the gold nanoparticles, the gold nanoparticles have high photothermal conversion rate and have better photothermal effect than single molybdenum disulfide, so that photothermal therapy is realized.

The invention discloses a surface plasmon resonance imaging chip and a preparation method thereof. The surface plasmon resonance imaging chip comprises a substrate, a chromium coating, a nickel coating and a silver coating, wherein the chromium coating, the nickel coating and the silver coating are sequentially stacked on the substrate. The preparation method comprises the following steps: providing a substrate; preparing a chromium plating layer on the substrate; preparing a nickel plating layer on the chromium plating layer; and preparing a silver plating layer on the nickel plating layer. The three-layer metal material combination of the chromium plating layer, the nickel plating layer and the silver plating layer is used for carrying out surface plasma resonance imaging detection, and high biochemical detection sensitivity is achieved; and meanwhile, post-treatment is conducted on the plating layer through electrostatic laminating, deoxidizing agent placing and vacuumizing, so that the plating layer is high in stability and easy to store, the property of the plating layer can still be kept stable after the plating layer is stored at the room temperature for 6 months or above, and the cost is low.

The invention relates to the technical field of semiconductor optoelectronic materials, in particular to a heterojunction photoelectric material based on the in-situ self-reduction surface plasma resonance effect, a preparation method and application, and the technical points are as follows: MoS2 quantum dots are deposited on a substrate, and a Cs2AgBiI6 nanosheet with a selectively exposed (100) crystal face is prepared by a low-temperature solvothermal method to obtain a Cs2AgBiI6 (100) nanosheet; cs2AgBiI6 (100) nanosheets are deposited on a MoS2QDs-substrate through a spin-coating method to prepare a Cs2AgBiI6 (100) / MoS2 QDs-substrate, a reducing agent is sprayed on the surface of the Cs2AgBiI6 (100) / MoS2 QDs-substrate, Ag elementary substances are generated through in-situ reduction, the heterojunction photoelectric material is obtained, an all-inorganic heterojunction system is constructed, the plasma resonance effect is introduced, and collaborative improvement of wide spectral response, high sensitivity, rapid response and high stability is achieved.

The utility model relates to the technical field of detection, and discloses a universal three-dimensional mesoporous gold substrate and an auxiliary device thereof, the universal three-dimensional mesoporous gold substrate comprises a silicon wafer, and a three-dimensional mesoporous gold film is attached to the side surface of the silicon wafer. The universal three-dimensional mesoporous gold substrate is prepared from the three-dimensional mesoporous gold film, and the three-dimensional mesoporous gold film is uniformly spread on the surfaces of quartz and monocrystalline silicon, uniform in microstructure and high in specific surface area, has excellent response signals when being used as an SERS (Surface Enhanced Raman Scattering) substrate, has highly consistent Raman enhancement effects in different regions, and is good in detection repeatability; 3D-Au has a plasma resonance effect (SPR) in a wide spectral range, and can generate obvious SERS response under the irradiation of laser from an ultraviolet region to a near-infrared region (325-1442nm); and on the other hand, the auxiliary device of the universal three-dimensional mesoporous gold substrate can realize accurate positioning of the detection substrate through the matching of the positioning ring and the positioning circular bulge, and the positioning ring and the positioning circular bulge are convenient for human eye observation and verification.

In response to the difficulty in disease early diagnosis and low diagnostic accuracy in the prior art, a disease early diagnosis system based on sebum gas analysis is provided, which combines a micro-electro-mechanical system, a novel two-dimensional material and a metal surface plasma resonance technology to provide a device for sebum gas collection and infrared spectrum enhancement, which collects human body trace sebum gas and enhances its infrared spectrum by metal plasma resonance, and then the sebum gas metal-plasma-enhanced infrared spectrum is inputted into a disease early diagnosis model for analysis, and ultimately achieved early diagnoses of diseases. The method is a truly non-invasive disease diagnosis method, which is non-invasive, simple, efficient, and has the advantages of no pollution to the environment and no ecological damage.

The invention provides a fault diagnosis system and method for power transformation equipment of a wind power substation based on multi-source data fusion, and relates to the technical field of power equipment fault diagnosis. Comprising a photonic crystal signal acquisition module, a magnetohydrodynamic signal amplification module, a plasma resonance feature extraction module, a Brownian motion fault evolution module, a cellular automaton fault positioning module, a dielectrophoretic force environment modulation module and a metamaterial signal verification module. All-weather and real-time collection of mechanical vibration, sound waves and thermal signals is achieved through the photonic crystal signal collection module, turbulence noise of a wind field is effectively filtered out in combination with an information geometric filtering algorithm, and the signal-to-noise ratio is increased by 10-20 dB. According to the system, an embedded processor or a cloud platform is adopted for data processing, the signal processing period is smaller than 10 ms, it is ensured that fault signals are captured in time, and the risk that faults evolve into major accidents is greatly reduced.

The invention discloses a multi-frequency plasma resonance and thermal gradient synergistic heteroepitaxy large-carat color diamond preparation system and method. According to the system, 2.45 GHz and 5.8 GHz double-frequency microwaves are synchronously introduced into an MPCVD reaction chamber, and superposition of low-energy and high-density plasmas and high-energy and low-density plasmas is achieved, so that carbon cluster deposition energy distribution is optimized. Meanwhile, a substrate thermal gradient which is gradually reduced from the center to the edge is formed through temperature control heating, and seamless splicing growth of diamond crystals is promoted. The system integrates multi-path gas injection and an in-situ Raman / photoluminescence feedback mechanism, dynamically regulates and controls color center doping and defect generation, and realizes stable preparation of the high-purity colored diamond with the color center distribution being more than or equal to 6ct, the defect density being lower than 106cm <-2 > and the color center distribution being uniform.

The invention provides a measuring device and method based on PCF-SPR refractive index sensing, and the device comprises an optical transmitting assembly, a sensing main body, an optical receiving assembly and a prediction module, the optical transmitting assembly is used for transmitting an optical signal and adjusting the polarization state of the optical signal; the sensing main body is connected with the optical emission assembly, the sensing main body is of a photonic crystal fiber structure and is provided with double layers of air holes, an Au / TiO2 composite film layer is deposited in a groove channel of the sensing main body, and the Au / TiO2 composite film layer interacts with an analyte to excite a surface plasma resonance effect so as to modulate an optical signal; the optical receiving assembly is connected with the sensing main body, and the optical receiving assembly is used for receiving the modulated optical signal so as to obtain a fundamental mode loss spectrum according to the modulated optical signal; the prediction module is connected with the optical receiving assembly, and the prediction module is used for rapidly predicting the sensor performance under different structural parameters; therefore, high-precision and high-efficiency refractive index measurement is realized.

The invention discloses a plasma double-resonance waveguide sensor based on nanometer antenna assistance, which comprises a substrate, a waveguide and a plasma resonator, the plasma resonator, the waveguide and the substrate are stacked from top to bottom, the waveguide is used for accessing and transmitting two optical signals with different wavelengths, and the waveguide is used for receiving and transmitting the two optical signals with different wavelengths. The plasma resonator can realize localized surface plasma resonance when the two optical signals are input into the waveguide, the plasma resonator is realized by adopting a gold nanorod array, the gold nanorod array is formed by uniformly distributing 2N gold nanorod units at intervals according to a mode of 2 rows and N columns, N is an integer greater than or equal to 1, and N is an integer greater than or equal to 1. Each gold nanorod unit comprises four gold nanorods which are distributed at intervals, and a nanoscale I-shaped gap structure is formed among the four gold nanorods; the device has the advantages that the structure is simple, the detection of the characteristics of the two substances can be realized, and the detection precision of the characteristics of the two substances is higher.

The induced polarization (IP) data acquisition system and method based on plasma fiber optic sensors provided by this invention can rapidly and cost-effectively detect the distribution patterns of formation complex resistivity and formation polarizability in underground three-dimensional work areas, as well as their relationship with underground oil, gas, and mineral resources. This significantly reduces interference from various anthropogenic noises on existing electronic IPI data acquisition devices, improving the signal-to-noise ratio of the IPI data. Because plasma resonance fiber optic sensors are used, the IPI data acquisition device no longer contains any electronic components or sensors. There is no mutual interference or crosstalk between plasma resonance fiber optic sensors or between the plasma resonance fiber optic sensors and the instrument host. The plasma resonance fiber optic sensors and the fiber optic host are also less susceptible to electromagnetic noise interference from the surrounding environment of the three-dimensional work area. Furthermore, the armored optical cables connecting the various plasma resonance fiber optic sensors enable high-speed, real-time transmission of large amounts of data across multiple channels and parameters.

The invention provides an SPR (Surface Plasmon Resonance) sensor, system and method for acetone concentration detection, and relates to the technical field of optical fiber gas sensing. The SPR sensor comprises a conical sensing area formed by tapering a part of multimode optical fiber, a metal film layer and a metal organic framework ZIF-90 layer, the surface of the conical sensing area is coated with the metal film layer, and the outer surface of the metal film layer is coated with the metal organic framework ZIF-90 layer; the metal organic framework ZIF-90 layer is used for selectively adsorbing acetone gas and triggering the refractive index change of the metal organic framework ZIF-90 layer after adsorption; the metal film layer is used for interacting with an evanescent field in the conical sensing area to generate a surface plasma resonance effect; the metal film layer is also used for responding to the refractive index change, so that the surface plasma resonance valley of the surface plasma resonance effect shifts; wherein the offset of the resonance valley represents the concentration of the acetone gas. According to the invention, efficient and accurate acetone concentration detection can be realized in a complex gas environment.