213 results about "Surface plasmonic resonance" patented technology

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.

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.

The invention discloses a surface plasmon resonance imaging system for expanding a dynamic range through a multi-mode optical path, and relates to the technical field of microscopic imaging, a laser outputs a monochromatic and linearly polarized continuous wave beam, a first dynamic beam deflection device performs dynamic angle deflection adjustment on the continuous wave beam, a prism is used for providing a total reflection interface, and a second dynamic beam deflection device is used for performing dynamic angle deflection adjustment on the continuous wave beam. Exciting an evanescent wave; a surface plasma resonance effect is generated through interaction of the SPR detection chip and evanescent waves, and sample characteristics are detected; the flow cell provides a sample flow channel, so that a sample is in full contact with the surface of the SPR detection chip; the second dynamic light beam deflection device cooperatively adjusts the propagation direction of reflected light on the surface of the SPR detection chip, and the imaging detection device captures a high-spatial-resolution SPR image formed by the reflected light and transmits the image to the upper computer in real time for processing and analysis. According to the invention, the change of the resonance angle can be tracked in real time, and high-sensitivity and high-resolution monitoring of the dynamic process of biomolecule interaction is realized.

The invention discloses a preparation method and application of a peptide microtube / SnO2 / Au composite gas-sensitive material. The three-dimensional network structure of the peptide microtube is utilized to effectively adsorb SnO2 and Au nanoparticles, so that the SnO2 and Au nanoparticles form a complete connection path on the surface of the peptide microtube, and electron transfer is facilitated; and gas diffusion is also facilitated. The localized surface plasmon resonance (LSPR) effect of Au nanoparticles can enhance visible light absorption and surface reaction activity, so that the gas-sensitive property is improved, and rapid adsorption and desorption reaction can be carried out at room temperature. The prepared sensor exerts the synergistic effect of the three materials, realizes efficient detection of NO2 at room temperature, has very high selectivity to NO2, and has relatively high response to low-concentration NO2, so that trace detection can be carried out.

The invention belongs to the technical field of SERS (Surface Enhanced Raman Scattering) detection, and relates to a preparation method of an Ag-Fe3O4 composite SERS substrate and application of the Ag-Fe3O4 composite SERS substrate in monitoring trace pollutants in water. Based on a plasma-semiconductor synergistic enhancement mechanism, cubic Fe3O4 nano particles with exposed {100} crystal faces are synthesized through a hydrothermal method, and the cubic Fe3O4 nano particles and Ag nano particles are subjected to ultrasonic-stirring to construct the Schottky heterojunction. The substrate creatively realizes dual-channel enhancement: the local surface plasmon resonance effect of Ag nanoparticles generates electromagnetic enhancement, the narrow band gap of Fe3O4 promotes photo-induced electrons to be transferred to Ag, an interface electric field is formed, and the polarizability of adsorption molecules is remarkably increased. When the probe is applied to detection of trace pollutants in a water body, the probe molecule RB is anchored on the surface of Fe3O4 through carboxyl, and the HOMO energy level of the probe molecule RB and the valence band top of Fe3O4 generate resonance charge transfer, so that the Raman cross section is improved. The detection limit of RB under 0.25 mW laser is increased by several orders of magnitude compared with that of a single Ag substrate.

The invention provides a heterogeneous dual-core optical fiber SPR (Surface Plasmon Resonance) microfluidic chip system for biochemical detection. The system is characterized by comprising a heterogeneous dual-core optical fiber 1, a dual-core optical fiber movable connector 2, a dual-core optical fiber SPR probe 3, a microfluidic chip 4, a dual-core optical fiber fan-in and fan-out device 5, a double-clad optical fiber 6, a large-core-diameter optical fiber 7, a spectrograph 8, a light source 9 and the like, wherein the double-core optical fiber 1 comprises a middle single-mode fiber core and a biased multi-mode fiber core, the end face of the single-mode fiber core is subjected to inclined grinding and plated with a gold film for exciting the surface plasma resonance effect, the end face of the multi-mode fiber core collects SPR reflected light signals through a secondary reflection inclined plane, and the double-core optical fiber SPR probe 3 is embedded into the micro-flow chip 4. The device has the advantages of high sensitivity, low loss and multi-channel detection, and can be widely applied to the fields of biochemical detection, environmental monitoring, precision medical treatment and the like.

The invention provides an optical fiber biosensor, a preparation method thereof and an optical fiber sensing system.The optical fiber biosensor comprises an optical fiber microstructure with an optical fiber sensing part and a surface plasma resonance layer, and the outer surface of the optical fiber sensing part is coated with the surface plasma resonance layer; the surface plasma resonance layer is used for exciting the optical fiber sensing part to generate surface plasma waves and combining or adsorbing a sensing target, and the surface plasma resonance layer is an AuNPs (at) MOF composite film; the AuNPs (at) MOF composite film is combined on the outer surface of the optical fiber sensing part through a chemical modification method, the optical fiber sensing part can be excited to generate surface plasma waves, and a sensing target is combined or adsorbed, so that a sensing film corresponding to a target detection object does not need to be coated during follow-up biological sensing, and the cost is reduced. And the manufacturing cost of the optical fiber biosensor based on the LSPR effect is further reduced.

The invention relates to the field of optical fiber sensing, in particular to a multichannel optical fiber surface plasma resonance sensing probe as well as a preparation method and application thereof. According to the multichannel optical fiber surface plasma resonance sensing probe, the sensing probe adopts an end face reflection type optical fiber sensing structure, and the end face reflection type structure is formed by welding a multimode optical fiber and a coreless optical fiber. A multimode-coreless optical fiber welded end face reflection type structure is adopted, SPR signals are excited through end face total reflection, the defect that a traditional lateral coupling type optical fiber SPR sensor is difficult to carry out directional detection in narrow spaces (such as blood vessels and tissue gaps) is overcome, miniaturized insertion type diagnosis with the minimum diameter being 300 micrometers is achieved, and the SPR sensor is suitable for in-situ monitoring of living tissue; according to the invention, through the nanocluster modification layers (0 / 2 / 4 layers) which are axially distributed at intervals, multi-channel functionalization can be completed only by a pulling method, traditional micro-nano processing and a complex film layer structure are not needed, and the preparation time of the multi-channel sensor is shortened from gt to gt; and the time is shortened from 6 hours to 1 hour.

A surface plasmon resonance sensor system includes a sensor plate having a quartz glass substrate and a copper film sputtered onto the substrate and annealed for about two hours. A quartz prism is attached to a surface of the sensor plate, and a microfluidics unit containing carrier fluid is attached to the opposite surface. A target analyte reservoir is connected through a pump to inject target analytes into the microfluidics unit. A binder is attached to the copper film and binds to target analytes. A laser transmits a beam into the quartz prism at an incident angle that generates surface plasmons resonating with the copper film and reflects a phase shifted laser beam. Receive optics and a charge coupled device convert the phase shifted beam to electrical signals. A computing unit processes the electrical signals to compute refractive index changes based on phase shifts to indicate target analyte detection.

The invention provides a multicolor visual semi-quantitative detection method for miRNA in skin interstitial fluid, which comprises the following steps: extracting a skin interstitial fluid sample in a minimally invasive manner by combining a microneedle patch with a vacuum negative pressure technology; the method comprises the following steps: incubating a skin interstitial fluid sample and a magnetic nanoprobe of which the surface is immobilized with a hairpin probe H1, opening H1 in the presence of target miRNA, triggering a subsequent hybridization chain reaction of a hairpin probe H2 and H3, and constructing a biotin-rich DNA compound on the surface of a magnetic bead; the method comprises the following steps: carrying out enzyme labeling by using an alkaline phosphatase-streptavidin conjugate, catalyzing ascorbic acid phosphate to generate ascorbic acid to reduce potassium iodate, and generating an iodine elementary substance to etch a gold nano bipyramid, so that the color of a solution is changed, and high-sensitivity detection on target miRNA is realized. The multi-color visual detection method provided by the invention is combined with the gold nano bipyramid localized surface plasmon resonance property change, so that near-full spectrum color change can be generated, and the portability of the sensor and the accuracy of visual analysis can be improved.

The invention discloses a preparation method of an MF (at) NH2 (at) Ag SERS (Surface Enhanced Raman Scattering) sensor for detecting paraquat and diquat, belongs to the field of nano material synthesis and spectral analysis, and solves the problems that a traditional detection method is complicated in process and cannot detect pesticides and free radicals thereof at the same time, and a traditional SERS substrate is poor in enhancement effect and low in stability. The preparation method comprises the following steps: firstly segmenting melamine foam, cleaning and drying, soaking in hydrochloric acid, soaking in a polyethyleneimine aqueous solution to modify amino, drying, soaking in a silver nitrate solution for ultrasonic treatment, adding a sodium borohydride solution under an ice bath, stirring and reducing, and finally cleaning and drying to obtain the sensor. The sensor takes three-dimensional melamine foam as a support, silver nanoparticles are uniformly loaded on the surface of the three-dimensional melamine foam, paraquat, aquacide and free radicals thereof are enriched through electrostatic interaction based on a localized surface plasma resonance principle, and Raman signal enhancement is realized. The detection limit is 10 <-9 > mol / L, the signal stability and repeatability are excellent, the applicability to actual water sample detection is good, the detection of other pesticides can be expanded, and the method is suitable for on-site rapid trace detection.

Provided are compounds, formulations comprising compounds, and devices that utilize compounds, where the devices include a substrate, a first electrode, an organic emissive layer comprising an organic emissive material disposed over the first electrode. The device includes an enhancement layer, comprising a plasmonic material exhibiting surface plasmon resonance that non-radiatively couples to the organic emissive material and transfers excited state energy from the organic emissive material to the non-radiative mode of surface plasmon polaritons. The enhancement layer is provided no more than a threshold distance away from the organic emissive layer, where the organic emissive material has a total non-radiative decay rate constant and a total radiative decay rate constant due to the presence of the enhancement layer. At least one of the organic emissive material and the organic emissive layer has a vertical dipole ratio (VDR) value of equal or greater than 0.33.

A method for manufacturing a surface-enhanced Raman scattering substrate for detecting virus macromolecules, in which a high-refractive spherical open cavity array with uniform noble metal nanoparticles on the inner surface is manufactured by using a dielectric nanoparticle monolayer close-packed array as a template, the coupling effect of surface plasmon resonance of noble metal particles and high-order magnetic resonance of high-refractive spherical cavities is utilized to form a uniform electric field enhanced hot zone on the inner surface of the cavity; after virus molecules enter the high-refractive spherical cavity with adsorbed noble metal particles, the virus molecule surface directly contacts the noble metal particles adsorbed on the inner surface of the high-refractive spherical cavity in a large area, that is, the virus molecules, the noble metal particles and the inner surface of the spherical cavity are coupled to overlap the electric field hot zone, which greatly improves the Raman signal intensity of the virus molecules and realizes high-sensitivity detection of the virus molecules.

To provide a hand-held or portable SPR device.SOLUTION: A hand-held or portable SPR device focuses light at two or more positions on a noble metal sensor surface, functionalized to enable detection of different SPR curves and their respective minima. The detection is accomplished substantially simultaneously by obtaining SPR signals contemporaneously from the different locations on the sensor surface, on the same sensor. The SPR device may incorporate multiple light sources or a single light source with a beam that is shifted by deflectors in seriatim to focus on different positions on along the functionalized sensor surface. To control wettability of the sensor surface (to augment multiplexing), the sensor surface may include i) the addition of surface assembled monolayers (SAMs) and ii) surface bombardment by gaseous plasmas, most notably O2.SELECTED DRAWING: Figure 1A

This invention discloses a copper-tungsten oxide / zinc oxide heterojunction photocatalyst, its preparation method, and its application, belonging to the field of nanomaterials and photocatalysis technology. Firstly, a single-atom copper-modified plasma W-type photocatalyst is synthesized using a solution-thermal method combined with an impregnation-thermal reduction process. 18 O 49 Nanowires were first prepared; then porous ZnO nanosheets were prepared via a hydrothermal method combined with calcination; finally, single-atom copper-modified plasma W was constructed via electrostatic self-assembly. 18 O 49 Nanowire / porous ZnO nanosheet heterojunction composite material. This invention utilizes the above-described preparation method to prepare Cu-W nanowires with matched band structures. 18 O 49 / ZnO heterojunction can realize the photogenerated electrons of ZnO into the plasma Cu-W 18 O 49 Nanowire implantation stabilizes and increases the surface oxygen vacancy concentration and free electron density, thereby enhancing the surface plasmon resonance effect and promoting the continuous generation of high-energy hot electrons. Single-atom copper active sites and W 18 O 49 The synergistic effect of nanowires enables the enriched hot carriers to efficiently and selectively photocatalytically reduce CO2 to CH4.

The application provides a skin interstitial fluid miRNA multicolor visualization semi-quantitative detection method, which comprises the following steps: incubating a skin interstitial fluid sample with magnetic nano probes of surface immobilized hairpin probes H1, opening H1 and triggering a subsequent hybridization chain reaction of hairpin probes H2 and H3 in the presence of target miRNA, and constructing a biotin-rich DNA complex on the surface of the magnetic beads; performing enzyme labeling by using an alkaline phosphatase-streptavidin coupling compound, and catalyzing ascorbic acid phosphate to generate ascorbic acid potassium iodate, so that the color of the solution changes, and high-sensitivity detection of the target miRNA is realized. The multicolor visualization detection method can produce near-full-spectrum color changes by combining the gold nano double-cone local surface plasmon resonance property change, and is beneficial to improving the portability of the sensor and the accuracy of the visual analysis.

The invention relates to a photochromic lens with a photochromic dye grafted nanoparticle composite film layer and a preparation method of the photochromic lens, and belongs to the technical field of optical lenses. The photochromic lens comprises a lens base material, a priming coat, a photochromic dye grafted nanoparticle composite film layer and a protective layer which are sequentially stacked from bottom to top, wherein chemical bond grafting is formed between the photochromic dye and the surfaces of the gold / silver nanoparticles through sulfydryl or carboxyl at the tail end of a molecule of the photochromic dye. The localized surface plasmon resonance effect of the covalent grafting structure and the nanoparticles synergistically solves the bottlenecks of easy agglomeration, low loading capacity and slow response of the dye in the traditional technology. The lens disclosed by the invention has the characteristics of extremely fast color-changing response, high color fading efficiency, high mechanical strength, good environmental stability and the like, and the comprehensive performance and the service life of the color-changing lens are remarkably improved and prolonged.

The invention belongs to the technical field of energy materials, and discloses a photo-assisted rechargeable lithium ion battery based on a Schottky heterostructure positive electrode, the photo-assisted rechargeable lithium ion battery comprises a lithium negative electrode, a solid electrolyte, a Schottky heterostructure photo-assisted positive electrode and FTO conductive glass with a transparent substrate, and a titanium dioxide semiconductor material and metal gold are compounded to serve as the battery positive electrode. On one hand, gold is nanoparticles, a plasma effect exists, and the light absorption capacity is remarkably improved, on the other hand, a built-in electric field is generated at a phase interface, the material has a lower ion migration energy barrier in the electrochemical process, and the ion diffusion capacity is higher and faster; the positive electrode material not only can collect solar energy similar to a solar cell, but also can store solar energy like energy storage equipment, so that the complexity and energy loss of a solar system are reduced; meanwhile, through the plasma effect, surface plasma resonance is shown, the optical path is increased, and a built-in electric field of the heterostructure achieves effective separation of photo-induced electrons and holes, so that the battery interface resistance is effectively reduced, the conductivity of an electrode material is increased, and the battery capacity is improved.

To achieve high spectral performance [Solution] The infrared spectrometer according to the embodiment comprises a diffraction grating structure, a metal thin film, and a current detection unit. The diffraction grating structure includes continuous convex and concave portions. A metal thin film is formed on the surface of the diffraction grating structure so that surface plasmon resonance can be excited when infrared light is incident at a specific incident angle. The current detection unit detects the current generated by the surface plasmon resonance. The pitch of the uneven structure in the diffraction grating structure is 1.52 times or more and 2.17 times or less the width of the convex portion.

An aerosol-generating device is disclosed. The aerosol-generating device includes a storage chamber storing an aerosol-generating substance, a wick that is in communication with the storage chamber, a heating element that is in contact with the wick and contains nanoparticles generating heat through surface plasmon resonance, and a light source configured to emit light toward the heating element. The heating element includes a first part receiving light emitted from the light source and a second part disposed outside the first part and having a plurality of holes formed therein.

An surface plasmon microscope includes a light source, a polarization element, a beam splitter, an objective lens, a photodetector, an operation unit, and the like. An illumination optical system including lenses, the polarization element, the beam splitter, and the objective lens guides light output from the light source to converge the light by the objective lens, and illuminates a metal thin film with the light from a lower surface side of a transparent substrate and focuses the light on the metal thin film to generate a surface plasmon resonance. A detection optical system including the objective lens, the beam splitter, and a lens guides reflected light generated by the focused illumination on the metal thin film to the photodetector. The operation unit acquires refractive index information of a sample disposed in contact with the metal thin film based on the reflected light intensity detected by the photodetector.

The application discloses a wavelength modulation surface plasmon resonance imaging sensing method, which generates multiple groups of illumination spectra by controlling a light-emitting diode, processes the spectra into p-polarized light, excites a sensing chip to generate surface plasmon resonance through prism coupling, collects corresponding reflected light intensity images by using a CMOS camera, and reconstructs surface plasmon resonance reflection spectra of each pixel on the sensing chip by using a smooth constraint reconstruction algorithm according to intensity observation values of the pixel in all images and corresponding illumination spectrum data, so as to further extract a phase signal and generate a spatially resolved phase image. The phase signal and the imaging scheme realize high-sensitivity and high-throughput sensing performance. The method realizes low-cost, high-signal-to-noise ratio and high-throughput sensing imaging.

The invention is applicable to the field of optical fiber sensors and the field of in-situ detection of ion batteries, and provides an in-situ detection method for an SPR type optical fiber ion battery based on MXene modification, which comprises the following steps: placing a micro-nano optical fiber sensor in the ion battery and fully contacting the micro-nano optical fiber sensor with electrolyte; when the battery works, the ion concentration change rule is mapped through the wavelength response distance of the reflection spectrum of the micro-nano optical fiber sensor so as to realize battery health state detection; the micro-nano optical fiber sensor is a high-sensitivity optical fiber sensing device based on an MXene composite gold nanoparticle (AuNPs) modified micro-nano optical fiber accompanying excitation surface plasma resonance (SPR) absorption peak phenomenon, MXene serves as an important candidate material of a new-generation energy storage and electrochemical device, and has stable electrochemical characteristics of electric conduction, energy storage, catalysis and the like; according to the invention, long-term structural stability can be maintained in a battery electrolyte environment, AuNPs can be firmly compounded on the basis of characteristics of rich functional groups on the surface, a multilayer structure and the like, and an SPR effect is excited on the surface of the micro-nano optical fiber, so that the detection sensitivity and the cycling stability of the sensor under long-term working of a battery are remarkably improved. According to the embodiment provided by the invention, high-sensitivity detection of the ion concentration in the battery can be realized, and the prepared sensor can be used for health state evaluation of energy storage batteries such as a lithium ion battery and a sodium ion battery.

This invention provides an Ag-doped photocatalytic composite membrane, its preparation method, and its application, relating to the field of water treatment membrane technology. The Ag-doped photocatalytic composite membrane of this invention has a composite functional structure consisting of a polyester nonwoven fabric support layer, a PVDF base membrane core layer, an Ag-BaTiO3 / ZnIn2S4 piezoelectric-photocatalytic functional layer, and a polydopamine hydrophilic protective layer, arranged sequentially. By constructing an Ag-doped dual piezoelectric coupled heterojunction system, introducing the surface plasmon resonance effect of Ag ions, and combining plasma-assisted deposition technology with the composite functional structure, this invention achieves a wide spectral response (UV to near-infrared), highly efficient piezoelectric-photocatalytic synergistic degradation, robust catalyst adhesion to prevent detachment, and multiple effects of "separation-degradation-self-cleaning." This solves the problems of traditional piezoelectric-photocatalytic membranes in terms of catalytic efficiency, long-term stability, and industrial adaptability, and has good application prospects.

The invention discloses an erbium-doped zinc selenide composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving zinc nitrate hexahydrate and erbium nitrate hexahydrate in deionized water, wherein the molar ratio of erbium ions in the zinc nitrate hexahydrate is 0.02-0.08; adding sodium selenite and sodium hydroxide; adding a reducing agent hydrazine hydrate; after hydrothermal reaction for h, washing and drying to obtain the erbium-doped zinc selenide composite material. The material is of a cubic phase ZnSe structure, erbium is uniformly doped in crystal lattices, and the material is in a nearly spherical particle shape. Rich 4f electronic defect states are introduced into a ZnSe band gap through erbium doping, charge transfer (chemical enhancement) is remarkably promoted, the free carrier concentration is improved to excite localized surface plasma resonance (electromagnetic enhancement), and the synergistic effect of two enhancement mechanisms is achieved. The detection limit of the SERS substrate to methylene blue is as low as 3.24 * 10 <-8 > mol / L, the enhancement factor is as high as 1.73 * 10 < 4 >, and a new way is provided for environmental pollutant monitoring.

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.

The invention belongs to the field of medicine detection, and particularly discloses a comprehensive control method for the quality of compound Pien Tze Huang lozenges, which comprises the following steps of: fishing targeted protein active ingredients of the compound Pien Tze Huang lozenges by respectively adopting a surface plasma resonance instrument with a built-in TNFR2 protein chip, a built-in TLR4 protein chip or a built-in TLR5 protein chip; the biological effect of the compound Pien Tze Huang lozenge is detected by adopting an SPR method based on the fished anti-inflammatory active ingredients, and the fingerprint spectrum of the compound Pien Tze Huang lozenge and the content of the ingredients in the fingerprint spectrum are detected by adopting an UPLC method. The surface plasmon resonance method and the UPLC method are combined to control the quality of the compound Pien Tze Huang lozenge, evaluation of the overall drug effect and accurate determination of component composition are combined, the quality of the compound Pien Tze Huang lozenge is controlled more comprehensively, and the method has practical application value.

The invention relates to the technical field of optical fiber sensors, in particular to a double-parameter photonic crystal optical fiber sensor based on surface plasma resonance, which comprises a fiber core and a perfect matching layer coated outside the fiber core, and circular air holes with different sizes are symmetrically distributed in the fiber core; the fiber core is provided with double groove channels, the surface of the upper groove channel is coated with a gold film, and the surface of the lower groove channel is coated with a gold film and a tantalum pentoxide film. According to the invention, dual-channel sensing and dual-parameter measurement can be realized, the refractive index range of an analysis liquid sample to be measured is 1.38-1.4, and the sensitivity of 5000nm / RIU and the resolution of 2 * 10 <-5 > RIU can be obtained; the temperature measurement range of the temperature-sensitive liquid is 20-40 DEG C, and the sensitivity of 4.2 nm / DEG C and the resolution of 0.024 DEG C can be obtained. The sensitivity and the resolution ratio of the sensor are superior to those of an existing sensor, and the sensor has great application prospects in the fields of biomedicine, industrial nondestructive testing and the like.

The invention provides a battery, a battery module and an electrical system. The battery comprises a shell and at least one liquid level detection assembly, and electrolyte is injected into the shell. The liquid level detection assembly comprises a detection structure located in the shell and a liquid absorption material strip, one end of the liquid absorption material strip is immersed in the electrolyte, the other end of the liquid absorption material strip extends to the position above the liquid level of the electrolyte in the first direction, and the first direction is perpendicular to the liquid level direction of the electrolyte. The detection structure comprises at least one detection section, the detection section is wrapped in the liquid absorption material strip, and the detection section comprises at least one detection point based on the optical fiber surface plasma resonance effect. According to the battery, based on the arrangement of the liquid level detection assembly, accurate dynamic detection of the liquid level of the electrolyte in the battery can be realized, so that the infiltration state of the electrolyte to the pole group is accurately quantified, and the battery has high reliability and stability. And the battery is simple in overall structure and is compatible with the existing battery production and assembly process. The reliability and safety of the battery module and the electrical system are improved.

This invention relates to the field of fiber optic sensor technology, and in particular to a dual-D structure fiber optic sensor for simultaneous refractive index and temperature detection and its fabrication process. The fiber optic sensor includes a cladding layer, within which a fiber core is disposed. A first channel is located at the bottom of the fiber core, and a second channel is located at the top of the fiber core. An inner hexagonal vent ring is disposed within the fiber core, and an outer hexagonal vent ring is formed outside the inner hexagonal vent ring. A first circular hole is formed at the bottom of the fiber core, directly above the first channel, and a second circular hole is formed at the top of the fiber core, directly below the second channel. This invention combines the microstructure design of photonic crystal fibers with the high-sensitivity technology of surface plasmon resonance, offering advantages such as real-time monitoring, no need for marking, and low interference. Replacing ordinary optical fibers with photonic crystal fibers as sensors can solve the phase matching problem, thereby achieving high-sensitivity and multifunctional real-time sensing measurements.