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52 results about "Plasma resonance" patented technology

Plasma resonance in layered normal metals and superconductors. Abstract. A microscopic theory of the plasma resonance in layered metals is presented. It is shown that electron-impurity scattering can suppress the plasma resonance in the normal state and sharpen it in the superconducting state.

Basalt fiber composite material as well as preparation method and application thereof

The invention relates to the field of super-hydrophobic materials, in particular to a basalt fiber composite material as well as a preparation method and application thereof. According to the composite fabric material provided by the invention, a multistage micro-nano rough surface of the MoS2 nanoflowers and the silver nanoparticles is constructed on the fiber substrate, so that not only is super-hydrophobic self-cleaning realized, but also the anti-icing performance is relatively high, and particularly, rapid heating is realized by combining broadband absorption of the MoS2 nanoflowers and a local surface plasma resonance effect of the silver nanoparticles; and meanwhile, the silver nanoparticles accelerate heat conduction, so that excellent ice melting capability is obtained. The high conductivity of the silver nanoparticles constructs a conductive path, and the layered structure of MoS2 triggers interface polarization, so that the electromagnetic shielding effectiveness of the X wave band is improved. The dual antibacterial mechanism of the MoS2 nanoflowers and the silver nanoparticles also realizes broad-spectrum efficient antibiosis, the preparation method is green and environment-friendly, the cost is low, and the requirements of complex scenes such as wearable electronic equipment, medical protection, polar region protection and national defense can be met.
Owner:HAINAN UNIV

Single-groove type photonic crystal fiber sensor based on surface plasma resonance

The invention discloses a single-groove type photonic crystal fiber sensor based on surface plasma resonance. The single-groove type photonic crystal fiber sensor structurally comprises a fiber core and a perfect matching layer wrapping the fiber core, and circular air holes which are arranged periodically and are different in size are formed in the fiber core; the fiber core is provided with a groove channel, and the lower surface of the groove channel is coated with a gold film and a titanium dioxide film. A loss spectrum is obtained through calculation, and then the wavelength of the surface plasma formant and the sensitivity of the sensor are calculated. The refractive indexes of the to-be-detected analysis liquid sample are different, and the wavelengths of the resonance peaks of the transmission loss spectrum are also different. The refractive index range of a to-be-detected analysis liquid sample of the sensor is 1.39-1.4, the sensitivity of 11000 nm / RIU and the resolution of 9.09 * 10 <-6 > RIU can be obtained, the sensitivity and the resolution of the sensor are superior to those of an existing sensor, and the sensor is simple in structure and easy to operate and has great application prospects in the fields of biosensing, environmental monitoring and the like.
Owner:GUILIN UNIV OF ELECTRONIC TECH

Method for detecting external vesicle marker through high-flux nano plasma exciting light immune color development

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.
Owner:QINGDAO RAISECARE BIOTECHNOLOGY CO LTD

COB process circuit board manufacturing process for photoelectric display

PendingCN120435139ANanosecondDisplay device
The invention discloses a manufacturing process of a COB (Chip On Board) process circuit board for photoelectric display. The manufacturing process comprises the following steps: performing constant-amplitude direct-current driving on a light-emitting chip array before injection of packaging glue to obtain full-board light field baseline data; the refractive index distribution of the packaging adhesive is regulated and controlled through multi-phase current pulses after the packaging adhesive is injected; forming a composite structure of a high-refractive-index chip interconnection interface and a low-refractive-index packaging surface by using Joule heat in a packaging adhesive crosslinking stage; the metal surface roughness is adjusted through nanosecond cosine pulses so as to control the plasma resonance characteristic; and finally, carrying out fine adjustment on the local refractive index by utilizing the interaction of the moving ions and the polar side chain. According to the technical scheme, stable refractive index distribution can be formed in the chip packaging structure through multi-physics field coupling regulation and control, formation of sub-wavelength stray light waveguides is effectively restrained, the problems of dynamic color cast and brightness flicker in an ultra-small pixel pitch COB display device are solved, and the optical performance consistency of the device is improved.
Owner:JIAN MANKUN TECH

Preparation method and application of S-type heterostructure material with plasma resonance effect

The invention discloses a preparation method and application of an S-type heterostructure material with a plasma resonance effect, and the preparation method comprises the following steps: grinding a precursor material, calcining, collecting solid powder, carrying out reflux purification in deionized water, and collecting white powder; dispersing the white powder in a hydrazine hydrate solution, carrying out solvothermal reaction to obtain a faint yellow solution, repeatedly dissolving and precipitating by respectively using acidic and alkaline reagents, washing and drying to obtain a faint yellow solid product; uniformly grinding the faint yellow solid product, calcining the faint yellow solid product in an atmosphere furnace, and cooling to obtain orange solid powder; and adding the orange solid powder into an organic solvent of a precursor containing a tungsten source, and centrifuging, washing and drying after the solvothermal reaction is finished to obtain the S-type heterostructure material with the plasma resonance effect. The S-type heterostructure material with the plasma resonance effect has relatively high efficiency for simulating separation and removal of uranium species in post-treatment wastewater and shows relatively good anti-radiation stability.
Owner:SOUTHWEAT UNIV OF SCI & TECH

Ultrasonic parameter adaptive adjustment and cleaning evaluation method in wafer cleaning process

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.
Owner:SHENZHEN ON XI GREEN ENERGY TECH

Paper-based SERS (Surface Enhanced Raman Scattering) substrate based on ultrahigh-activity silver nanowires as well as preparation method and application thereof

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.
Owner:CHINA AGRI UNIV

Interlayer surface plasma resonance biosensor as well as preparation method and application thereof

The invention provides an interlayer surface plasmon resonance biosensor which comprises a patterned substrate, and detection areas which are arranged in an array and are formed by metal layers are formed on the surface of the patterned substrate; the spacing layer is formed in the detection area and comprises capture molecules; the nanometer adhesive tape is compounded on the surface of the patterned substrate, and a metal nanoparticle layer is arranged on one surface, facing the patterned substrate, of the nanometer adhesive tape. The invention further provides a preparation method and application of the interlayer surface plasma resonance biosensor. The nano double-sided adhesive tape is used as a transfer medium, and stable transfer of the metal nanoparticles from the substrate to the adhesive tape can be realized through two-step operation of'attaching-stripping ', so that the transfer difficulty of the metal nanoparticle layer is remarkably reduced, the operation is simplified, and the transfer efficiency is improved. And parameters such as the size, the morphology and the density of the nanoparticles in the sandwich structure can be accurately controlled, and the obtained metal nanoparticle layer is good in stability and can be stored for a long time.
Owner:JILIN UNIVERSITY

UCNPs modified AgNPs (at) MgAl LDH composite material and preparation and application thereof

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.
Owner:FUZHOU UNIV

A surface plasmon resonance terahertz sensor

The present invention relates to a terahertz sensor based on surface plasmon resonance, belonging to the field of terahertz sensing technology. The present invention comprehensively considers the reasonable layout and parameter optimization of the dielectric layer, bottom metal plate, and resonator unit to achieve high-sensitivity, high-selectivity, and fast-response sensing performance. The present invention is composed of a periodic array of ring resonators and butterfly resonators, forming a novel integrated sensor. The butterfly resonator is arranged in the middle of four metal ellipses, which can enhance the interaction between electromagnetic waves and substances, thereby improving the sensor performance. Plasma resonance is introduced into the reflection spectrum and a red shift occurs during transverse stretching, achieving high sensitivity and excellent robustness. Moreover, by optimizing the electromagnetic field distribution, the response ability of the sensor to specific frequencies or refractive indices is enhanced, and it can more accurately detect tiny refractive index changes, thereby improving its sensitivity.
Owner:GUILIN UNIV OF AEROSPACE TECH

Induced polarization logging instrument system based on plasma optical fiber sensor and acquisition method

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.
Owner:OPTICAL SCI & TECH (CHENGDU) LTD

Multi-dimensional spectrum real-time voiceprint recognition system based on bionic physical reserve pool optical calculation

The invention discloses a multidimensional spectrum real-time voiceprint recognition system based on bionic physical reservoir optical calculation, which comprises an upper computer, a microprocessor and a plurality of synchronous sampling modules, and is characterized in that the synchronous sampling modules are connected with a USART serial port through a control bus; each synchronous sampling module comprises a DAC laser trigger unit, a laser, an ORRAM optical calculation array, a signal amplification unit and an ADC sampling unit which are connected in sequence, and the DAC laser trigger unit and the ADC sampling unit are connected with a USART serial port through a control bus; the ORRAM optical calculation array is composed of an ITO / MoS2 / Ag heterojunction memristor and used for converting the optical pulse sequence into a light current response signal through the synergistic effect of the MoS2 interlayer exciton effect and Ag nanoparticle surface plasma resonance. The method has the remarkable effects that through material innovation, architecture optimization and algorithm collaboration, the multi-dimensional constraint of the prior art is broken through.
Owner:SOUTHWEST UNIV

D-type photonic crystal fiber temperature sensor based on surface plasma resonance

PendingCN120507059AThermometer detailsCladded optical fibreFiberPerfect matched layer
The invention discloses a D-type photonic crystal fiber temperature sensor based on surface plasma resonance. The D-type photonic crystal fiber temperature sensor structurally comprises a fiber core and a perfect matching layer wrapping the fiber core, and circular air holes of different sizes are periodically arranged in the fiber core; the fiber core is provided with a polished plane, and the surface of the polished plane is coated with a gold film; a loss spectrum is obtained through calculation, and then the wavelength of the surface plasma formant and the sensitivity of the sensor are calculated. According to different temperatures of the temperature-sensitive liquid samples, wavelengths of formants of the transmission loss spectrum are also different. The temperature range of a temperature-sensitive liquid sample of the sensor is-10-60 DEG C, and the sensitivity of 9.8 nm / DEG C and the resolution of 0.01 DEG C. The sensitivity and the resolution of the sensor are superior to those of an existing sensor, and the sensor is simple in structure and easy to operate and has great application prospects in the fields of biomedicine, environmental monitoring and the like.
Owner:GUILIN UNIV OF ELECTRONIC TECH

An aerosol jet frequency domain shaping laser plasma resonance sintering system

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.
Owner:BEIJING INST OF TECH

Preparation method for enhancing performance of TMDCs heterojunction photoelectric detector with Cu-coated CuO core-shell structure

PendingCN120456626AHeterojunctionLight response
The invention designs a 0D / 2D Cu-coated CuO / MoS2 heterojunction of a Cu-coated CuO core-shell structure enhanced TMDCs system, and the 0D / 2D Cu-coated CuO / MoS2 heterojunction can realize efficient photoelectric conversion and is applied to a high-sensitivity photoelectric detector. According to the invention, a core-shell plasma structure is obtained through a metal surface thermal oxidation technology, and a type-II 0D / 2D Cu-coated CuO / MoS2 heterojunction is constructed. On one hand, a built-in electric field is formed by a plasma shell layer material CuO and MoS2, so that separation of photo-induced electron-hole pairs can be promoted, hot electrons of LSPR (Local Surface Plasma Resonance) can be injected into a MoS2 layer in cooperation, the photoelectric conversion efficiency of a heterojunction system is improved, the contradiction between light absorption and carrier separation of a traditional heterojunction system is solved, and the photoelectric conversion efficiency of the heterojunction system is improved. And the response speed of the device is improved. And on the other hand, the shell layer material CuO can reduce interface damage caused by metal / semiconductor contact, so that the problem of high dark current accompanied by the plasma type photoelectric detector under high light response is solved. Compared with a traditional plasma type device only paying attention to light absorption, the plasma / TMDCs system heterojunction photoelectric detector designed by the invention effectively solves the problem of low response speed and shows excellent photoelectric conversion efficiency. The method is of great significance to development of low-dimensional hybrid heterojunction photoelectric detectors.
Owner:CHANGCHUN UNIV OF SCI & TECH

Method for simultaneously measuring thickness and optical constant of thin film

The invention relates to the field of optical precision measurement, and discloses a method for simultaneously measuring film thickness and optical constants based on a surface plasma resonance holographic microscopy system. When surface plasmon resonance occurs in the structure with the film attached to the surface of the metal film, the thickness and the optical constant of the film above the metal film have a differential modulation effect on a reflection phase curve near a resonance angle. And performing parameter inversion on a theoretical resonance curve calculated based on a multilayer film reflection theory and a reflected light wave phase difference under different incident angles measured by using a surface plasma resonance holographic microscopy system to realize simultaneous measurement of the film thickness and the optical constant.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Plasmon-enhanced photocatalyst and method of using the same for the degradation of halogenated organics in aqueous solutions

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.
Owner:YALE UNIVERSITY

Ag-sensitized core-shell Ag (at) CdS (at) ZnS quantum dot and preparation and application thereof

PendingCN120648453ANanoopticsFluorescence/phosphorescenceQuantum yieldLattice defects
The invention discloses an Ag-sensitized core-shell Ag (at) CdS (at) ZnS quantum dot as well as preparation and application thereof. The quantum dot comprises a silver nanoparticle inner core, a cadmium sulfide middle layer coating the silver nanoparticle inner core, and a zinc sulfide outer layer coating the cadmium sulfide middle layer, a core-shell structure of silver nanoparticle inner core-cadmium sulfide middle layer-zinc sulfide outer layer is constructed, CdS and ZnS shell layers are coated step by step, lattice defects can be reduced, meanwhile, Ag is introduced, the plasma resonance effect can be improved, and the quantum yield and the detection sensitivity to nitro explosives are remarkably improved.
Owner:WUHAN UNIV OF TECH +1

Metal nanoparticles with adjustable size, structure and performance, and preparation method and application thereof

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.
Owner:HEFEI INSTITUTE OF PHYSICAL SCIENCE CHINESE ACADEMY OF SCIENCES

High-sensitivity recyclable microfluidic Raman detection substrate

The invention relates to the technical field of nano photon fluidics, and discloses a high-sensitivity recyclable microfluidic Raman detection substrate, which comprises: a substrate; the metal rough film enhancement layer is arranged on the surface of the substrate, and the enhancement layer comprises a copper deposition layer and a gold deposition layer and is used for providing surface enhanced Raman scattering sites for target molecules; the micro-fluidic channel is arranged on the surface of the metal rough film enhancement layer, and the micro-fluidic channel is provided with at least one inlet and one outlet and is used for guiding a liquid sample to flow through the surface of the enhancement layer. According to the invention, the metal rough film enhancement layer formed by depositing the copper layer and the gold layer on the substrate and the nanoscale rough structure on the surface of the metal rough film enhancement layer are utilized to generate high-density localized surface plasma resonance hot spots, so that Raman scattering signals of target molecules adsorbed on the metal rough film enhancement layer are greatly enhanced; according to the invention, the detection sensitivity can be obviously improved, and the effective detection requirement on ultra-trace molecules can be met.
Owner:EAST CHINA NORMAL UNIV

Raman spectrum enhanced substrate and femtosecond laser liquid phase ablation preparation method thereof

The invention relates to a Raman spectrum enhanced substrate and a femtosecond laser liquid phase ablation preparation method thereof, and belongs to the technical field of femtosecond laser processing. The metal nanoparticles are embedded on the surface of the titanium dioxide nanotube array in a direct writing manner, so that a multi-element plasma nanostructure is formed, and the SERS performance is further improved. Due to the existence of the local surface plasma resonance effect, the multi-metal nanostructure resonates to generate a hot spot, so that an enhanced local electric field is generated, and the SERS signal performance is adjusted. Compared with other processing methods, the method has the advantages of simple and efficient process steps and high controllability and stability.
Owner:BEIJING INST OF TECH

Method for enhancing NV color center fluorescence based on localized surface plasma resonance effect of precious metal nanoparticles

The invention discloses a method for enhancing NV color center fluorescence based on a localized surface plasmon resonance effect of noble metal nanoparticles, and belongs to the technical field of quantum sensing and nano photonics. The invention aims to solve the problems that an existing optical microcavity enhancement method for improving the diamond NV color center fluorescence intensity is extremely high in NV color center positioning precision requirement and complex in process, surface plasmon enhancement depends on a propagation mode of a metal film, the mode size is large, resonance wavelengths are not matched, ohmic loss is serious, and the cost is low. And although the random metal nanoparticles are simple to prepare, the problems of unstable enhancement effect and low signal-to-noise ratio caused by uncontrollable size and arrangement are solved. According to the method, the metal nanoparticle array is prepared on the surface of the diamond, the resonance enhancement requirement of the NV color center zero phonon line (637nm) is met by regulating and controlling the geometric parameters and spatial arrangement of the metal nanoparticles and the coupling relation between the metal nanoparticles and the NV color center, and the fluorescence intensity of the NV color center of the diamond is improved.
Owner:HARBIN INST OF TECH +1

Multi-payment institution bar code payment method and system

The invention discloses a bar code payment method and system for multiple payment institutions, and relates to the technical field of quantum financial security, and the method comprises the steps: collecting gravitational field data, calculating a four-dimensional space-time coordinate of a user through a Carrousel-Claien five-dimensional field equation, triggering the plasma resonance wavelength locking of an SPP metamaterial layer, and building an optical enhancement field; performing quantum entanglement photon pair scanning by using an optical enhancement field, decoding a payment institution routing parameter set through a Bell inequality violation value, and generating a non-localized quantum signature; performing Riemannian manifold curvature matching on the four-dimensional space-time coordinate and a geographical fence boundary of the payment institution, and when the four-dimensional space-time coordinate is within a fence boundary threshold, triggering a target payment institution screening instruction and binding a non-localized quantum signature; according to the method, the four-dimensional space-time coordinates of the user are calculated by collecting the gravitational field data and applying the Carrouba-Claien five-dimensional field equation, so that high-precision space-time positioning and photon regulation are realized.
Owner:HANGZHOU CITIZEN CARD PAYMENT CO LTD

Core-shell parameter optimization SERS signal regulation and control method and system

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.
Owner:INST OF PHYSICS HENAN ACAD OF SCI +1

Novel metamaterial multispectral imaging chip and preparation method thereof

The present invention discloses a novel metamaterial multispectral imaging chip and a preparation method thereof, belonging to the technical field of optical sensors, comprising: a multi-channel metamaterial filter array, a microlens array and an image sensor, wherein the multi-channel metamaterial filter array is located between the microlens array and the image sensor and integrated with the image sensor; the multi-channel metamaterial filter array includes a base layer, a nanopore array structure layer and a plasma resonance effect covering layer, the plasma resonance effect covering layer is located on the upper surface of the nanopore array structure layer, and the base layer is located on the lower surface of the nanopore array structure layer. The present invention directly constructs and packages the multi-channel metamaterial filter array and the microlens array on a commercial CMOS image sensor silicon chip, realizes imaging and spectral acquisition of multiple wavelength channels, and the constructed multispectral imaging chip is compact.
Owner:HEFEI HEGUANG MICROELECTRONICS TECH CO LTD

Preparation method and application of NiFe2O4 spinel / NiFe-hydrotalcite photocatalytic composite material

The present invention belongs to the field of photocatalysis, and relates to a preparation method and application of NiFe2O4 spinel / NiFe‑hydrotalcite photocatalytic composite material. A soluble nickel salt and a soluble iron salt are dissolved in deionized water, a NaOH solution is added dropwise to the solution to make it alkaline, and Na2CO3 is added to the solution, stirred, and then transferred to a microwave hydrothermal reaction kettle; after cooling to room temperature, the reaction product is collected by centrifugation, cleaned, dried, and ground; and finally a NiFe2O4 spinel / NiFe‑hydrotalcite photocatalytic composite material is obtained. The NiFe2O4 / NiFe‑LDH photocatalytic composite material prepared by the present invention presents a regular hexagonal morphology, has a plasma resonance effect and abundant active sites, has a large specific surface area, can achieve near-infrared light response, effectively suppresses the recombination of photogenerated carriers, enhances the performance of the photocatalyst, and has excellent effect on the photocatalytic reduction of carbon dioxide to methane.
Owner:CHANGZHOU UNIV

A data processing system and method for textile auxiliary production

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.
Owner:ZHEJIANG WEIFENG NEW MATERIALS CO LTD

SPR device (surface plasma resonance device)

UndeterminedDE102026100938A1Plasma resonanceMechanical engineering
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).
Owner:AFFINITY SENSING TECHNOLOGY CO LTD

Device for controlling temperature of buffer solution to be constant in imaging process and use method

PendingCN121253486AMaterial analysis by optical meansSurface plasmon resonance imagingImaging technology
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.
Owner:JINAN CHENGQUAN BIOTECHNOLOGY CO LTD