43results about How to "Improve Sensing Performance" patented technology

The invention discloses a terahertz sensor based on graphene Fano resonance and a regulation and control method and application thereof, and relates to the technical field of sensing devices, the terahertz sensor comprises a substrate layer, a dielectric layer and a graphene layer, the graphene layer comprises at least one unit structure arranged on the dielectric layer, each unit structure comprises two long graphene ribbons arranged in parallel at intervals and four short graphene ribbons arranged between the two long graphene ribbons, the four short graphene ribbons are symmetrically arranged at the two ends of the two long graphene ribbons in pairs, and the outer ends of the short graphene ribbons are flush with the ends of the long graphene ribbons. Fano resonance is combined with the graphene terahertz sensor, electric dipole resonance caused by the action of an electric field and a magnetic field is utilized to generate a Fano resonance phenomenon, radiation loss is effectively reduced and the Q value of the sensor is improved through destructive interference action between a light mode and a dark mode, and the terahertz sensor has good sensing performance and can be used for sensing terahertz waves. The method has important application potential in the aspects of biomedicine and sample detection.

The invention provides a communication perception integrated waveform design method for the Internet of Vehicles, which belongs to the technical field of wireless communication, and can realize peak performance, enhance radar capability and ensure efficient communication by minimizing the weight sum of multi-user interference, the similarity between a design waveform and a reference waveform, a Cramer-Rao bound and an ISAC waveform. According to the method, optimization with the total transmission power and the peak-to-average power ratio as constraints is adopted, a non-convex problem is converted into a convex problem, an alternating direction multiplier method algorithm is adopted for solving, and a simulation result shows that the ISAC waveform has good communication and target detection capability, and the V2X spectrum utilization rate can be improved. According to the method, a target can be detected during communication with a downlink user, the sum of MUI, CRB and waveform similarity is minimized, weighing parameters are introduced, flexible weighing between communication and sensing is achieved under the constraint of the total power and the peak-to-average power ratio, the method better adapts to a V2X high-dynamic scene, and mutual interference caused by separation of traditional sensing and communication functions is reduced.

Example embodiments relate to devices, systems, and methods related to a three-dimensional time-of-flight / visible image sensor. Example embodiments include an apparatus that includes a plurality of time-of-flight sensor (ToF) pixels and a plurality of visible image sensor (VIS) pixels. The apparatus also includes a ToF communication channel configured to provide ToF image data indicative of one or more ToF pixels, and a VIS communication channel configured to provide VIS image data indicative of one or more VIS pixels. The plurality of ToF pixels and the plurality of VIS pixels are arranged along a plane. The plurality of ToF pixels are disposed in an arrangement between the plurality of VIS pixels.

The invention discloses a UV-CIPP material for pipeline repair and intelligent water level monitoring and a preparation method of the UV-CIPP material, and belongs to the technical field of ultraviolet curing pipeline repair. The preparation method comprises the following steps: selecting a proper amount of MWCNTs solution; the woven glass fibers are put into the dipping solution to be soaked; coating a conductive silver adhesive on the woven glass fiber, and pasting a copper electrode; adding a thermal initiator into the ultraviolet curing resin; pouring the resin into a mold, and laying woven glass fibers; and carrying out ultraviolet light curing and thermocuring on the prefabricated member. By introducing the MWCNTs impregnated woven glass fiber sensing layer and adopting ultraviolet light / heat dual curing, the intelligent pipeline composite material with ultrahigh strength and ultrahigh sensing capacity is formed, and the change of the water level in a pipeline can be monitored in real time while the pipeline is repaired.

The invention discloses lead-free perovskite Cs2NaHoBr6 as well as a fractal structure, a preparation method and application thereof, and belongs to the technical field of photoluminescence and fractal crystal growth. The lead-free perovskite Cs2NaHoBr6 is successfully synthesized through a novel solvent boiling method, and compared with a traditional fluorescence thermal quenching perovskite material, the lead-free perovskite shows thermally enhanced red light and near infrared light emission under excitation of ultraviolet light, blue light and near infrared light, has up-conversion and down-conversion luminescence capabilities, and can be used for preparing a luminescent material. The emission peak intensity is in positive correlation in the range of 293-593 K, and an abnormal heat quenching resistance behavior is shown. Cs2NaHoBr6 powder is dissolved in an anti-solvent, and a fractal structure pattern with preferred orientation and self-similarity characteristics is prepared by using an in-situ solution crystallization method, so that the temperature sensing performance of the compound is remarkably improved, the relative sensitivity of the compound is enhanced from 1.14% K <-1 > to 2.60% K <-1 >, and the compound shows a good application prospect in the aspect of non-contact optical temperature measurement.

The invention relates to the field of special equipment detection, in particular to a digital-based special equipment sensing information processing system and method.The digital-based special equipment sensing information processing system comprises a film cultivation module, a classification excitation module, a high-temperature stabilization module, a sound wave control module and a matrix analysis module; the classification excitation module is used for performing annealing treatment on a film to different degrees and recovering excitation sound waves; the high-temperature stability module is used for fitting a thermal stability function of the film; the sound wave control module is used for matching a to-be-detected material and an ultrasonic sensor; the matrix analysis module is used for adjusting excitation current and analyzing material stress; the preparation process and the production process of the ultrasonic piezoelectric film can be optimized, the production efficiency and the product quality are improved, meanwhile, the sensing performance of the ultrasonic piezoelectric film is improved, the detection sensitivity and the resolution of sound waves are enhanced, and more efficient sound wave excitation and sensing functions are achieved.

The CSHS reaction device comprises a liquid phase conveying system, a reaction system, a temperature control system and a sample collection system, the liquid phase conveying system consists of three same high-pressure conveying pumps for liquid chromatography, corresponding liquid phase pipelines and adapters; the reaction system consists of two sets of electric heating devices, corresponding liquid phase pipelines and adapters; the temperature control system controls the two sets of electric heating devices to enable the electric heating devices to be subjected to programmed temperature rise and stabilize the temperature to be 400 DEG C or above; and the sample collection system consists of a water cooling device, a filter and a back pressure valve. The CSHS reaction device is applied to preparation of a semiconductor H2S sensing material, is good in structural consistency and excellent in sensing performance, and can meet application requirements.

The invention provides a sensor preparation method based on organ-shaped MXene, V4AlC3 takes Al and Co as catalysts at room temperature, an HF aqueous solution is used for selectively etching an Al layer in the V4AlC3 to prepare a V4C3Tx room-temperature gas-sensitive material, and then the V4C3Tx room-temperature gas-sensitive material is transferred to a flexible substrate to prepare an acetone gas sensor, and the method comprises the following specific steps: (1) preparing a high-molecular flexible substrate; (2) preparation of organ-shaped MXene; and (3) transferring the gas sensitive material to a flexible substrate to prepare the acetone sensor. The acetone sensor of V4C3Tx prepared by the invention has a low working temperature of 25 DEG C, a low detection limit of 1 ppm and high selectivity to acetone in mixed gas of acetone and water vapor. Different electrodes can be deposited on the flexible substrate, the cost is low, the steps are simple and controllable, the flexibility is good, the sensitivity is high, and the acetone can be detected at room temperature.

The invention discloses a preparation method of an impact-resistant elastic conductor material for 3D printing, and the method comprises the steps: taking silver particles / silver nanosheets as a conductive phase, and taking polyboron dimethyl siloxane as an impact-resistant material; by adding the polyhydroxy low-boiling-point solvent, the density of B-O dynamic cross-linking bonds in the polyboron dimethyl siloxane is reversibly adjusted, meanwhile, the number of silicon hydroxyl is reversibly increased, the hydrogen bond density is improved, the printability of the PBS is enhanced, and meanwhile, the cushioning effect of the PBS is not affected. According to the invention, the reduction and recovery of B-O density are controllable based on a reversible reaction principle of a polyhydroxy low-boiling-point solvent and a B-O dynamic cross-linking bond, and meanwhile, due to the seepage effect of silver powder particles / silver sheets, the Ag / PBS impact-resistant elastic conductor shows excellent conductivity. After the polyhydroxy low-boiling-point solvent in the printed pattern is subjected to vacuum drying, the B-O dynamic crosslinking bond density is recovered, and the Ag / PBS impact-resistant elastic conductor recovers good shear thickening effect, conductivity, sensing performance and self-repairing performance.

The present application relates to a kind of based on carbonized wood natural structure dopamine electrochemical sensor and its preparation method and application, the working electrode of the electrochemical sensor is modified with carbonized wood-ZnO nanowire-ZIF-8.The electrochemical sensor of the present application uses carbonized wood as substrate, after cutting carbonized wood whole piece, using conductive carbon paste is pasted on working electrode, while ensuring conductivity, also retain the three-dimensional structure of nanomaterial not be destroyed, guarantee the performance of sensor, with good application prospect.

The invention provides a programmable robot control system, which relates to the technical field of robot control, and comprises a flexible humidity sensor array, an energy storage module, a resistance acquisition device, Bluetooth and a robot control end, the energy storage module supplies power to the resistance acquisition device and the Bluetooth, the flexible humidity sensor array is connected with the resistance acquisition device, the resistance acquisition device uploads acquired data to the robot control system through the Bluetooth, and the robot control system processes the data and converts the data into corresponding control signals so as to control movement of the programmable robot. According to the technical scheme, the problem that in the prior art, a programming robot is controlled in a contact mode, and bacteria or viruses are likely to be spread is solved.

The invention provides a method for preparing a photonic crystal fiber with sensing and filtering functions. The method comprises the specific steps that a first layer of air holes are formed in the circle center of quartz; by taking the first layer of air holes as the center, two second type of air holes and three third type of air holes are formed in the periphery of the first layer of air holes along a regular hexagon; by taking the first layer of air holes as the center, two first type of air holes and nine third type of air holes are formed in the periphery of the first layer of air holes along a regular hexagon; thirteen third-type air holes are formed in the periphery of the first-layer air holes in a regular hexagon mode with the first-layer air holes as the center; and preparing a preform according to the arranged cladding, melting and drawing wires, and depositing gold on a polished plane to obtain the photonic crystal fiber, and immersing the photonic crystal fiber in a liquid to be detected when in use. According to the invention, integration of the optical fiber sensor and the filter is realized, high-sensitivity sensing is realized in the X polarization direction, and polarization filtering with adjustable bandwidth and high extinction ratio is realized in the Y polarization direction.

This invention discloses a method for preparing a self-healing hydrogel with both sensing and antibacterial properties. The invention uses a hydrogel prepared from acrylamide (AM) and 2-(methacryloyloxy)ethyl dimethyl-(3-sulfopropyl)ammonium hydroxide (SBMA) and cellulose nanofibers (CNF) as a matrix, silver-coated polydopamine nanoparticles (Ag@PDA NPs) as antibacterial and conductive agents, and 2-hydroxy-4'-(2-hydroxyethoxy)-2-methylphenylacetone (I2959) and polyethylene glycol diacrylate (PEGDA) as photoinitiators and crosslinking agents. A multifunctional hydrogel with multiple dynamic reversible bonds is prepared by ultraviolet light-initiated self-polymerization. By constructing various dynamic reversible interactions, including covalent and non-covalent bonds and interionic interactions, a self-healing Ag@PDA NPs / AM / SBMA / CNF hydrogel was obtained. Ag and DA were introduced to prepare Ag@PDA with antibacterial, adhesive, and electronic conductivity properties, while zwitterionic SBMA was introduced to provide ionic conductivity. The synergistic effect of these two compounds endows the hydrogel with electrical conductivity. The hydrogel dressing prepared by this method can achieve rapid sterilization while possessing excellent biocompatibility, high adhesion, high conductivity sensing ability, and environmental adaptability.

The application discloses a kind of Ni doped nano SnO2 semiconductor HCHO sensing materials and preparation method and application thereof, and the preparation method of sensing material includes the following steps: step one, Sn salt-Ni salt solution is configured;Step two, using supercritical hydrothermal synthesis (CSHS) reaction device, Sn salt-Ni salt solution is contacted with supercritical water and crystallization is generated nano doped oxide, and reaction liquid is discharged and collected after cooling, and the crystalline material is separated, i.e. the Ni doped nano SnO2 semiconductor HCHO sensing material of the application.The Ni doped nano SnO2 semiconductor HCHO sensing material prepared by the method of the application has good structural consistency and excellent sensing performance.

The present application relates to a kind of preparation methods of coating material, more particularly to a kind of preparation method of porous polyethyleneimine-silver nanocluster / chitosan / silica coating material.The purpose of the present application is to overcome the problem that the sensing of existing metal nanocluster composite nanoparticles after silica coating is poor, and the application in fluorescence sensing is limited.The present application provides a kind of preparation method of porous polyethyleneimine-silver nanocluster / chitosan / silica coating material, which includes etching the prepared porous polyethyleneimine-silver nanocluster / chitosan / silica coated nanoparticles, making it loose and porous, and enhancing its sensing ability, thereby solving the problem that the sensing of existing metal nanocluster composite nanoparticles after silica coating is poor, and the application in fluorescence sensing is limited.

The invention discloses an m-benzene bridged alkynyl pyrazole pyridine derivative as well as a preparation method and application thereof, and belongs to the technical field of pyrazole pyridine derivatives. The preparation method of the m-benzene bridged alkynyl pyrazole pyridine derivative comprises the following steps: dissolving pyrazole halide, an ethynyl aromatic compound and a catalyst in a solvent, carrying out heating reflux in an N2 atmosphere, and carrying out filtering, spin-drying and chromatographic evaporation to obtain a solid product; and adding the solid product into a mixed solvent prepared from methanol and dichloromethane according to a volume ratio of 1: 1, adding HCl into the mixed solvent to remove a protecting group, adding NaHCO3 to adjust the pH value of the mixed solvent to 7, filtering to obtain a solid, and washing, filtering and vacuum drying the solid to obtain the derivative. By adopting the m-benzene bridged alkynyl pyrazole pyridine derivative as well as the preparation method and the application thereof, the problems that a single pyridine pyrazole ligand adopted in the prior art is simple in coordination form and an obtained complex is single in structure and function can be solved.

The present invention relates to the technical field of micro-nano optical devices, and in particular to a metasurface refractive index sensor based on a bimetallic composite periodic structure and a method for manufacturing the same. The sensor comprises a substrate and a bimetallic composite periodic structure distributed on the surface of the substrate in a periodic array, wherein the bimetallic composite periodic structure comprises a nanopore membrane and a nanocolumn, wherein the nanopore membrane is provided with circular holes that penetrate up and down and are distributed in an array, wherein the nanocolumn is a cylindrical structure and is nested inside the circular hole, wherein a space filled with a substance to be tested is formed between the nanocolumn and the circular hole, wherein the nanopore membrane and the nanocolumn are composed of different metal materials, wherein the nanopore membrane and the nanocolumn are used to independently excite surface plasmons of different modes and couple with incident light to generate Fano resonance. Surface plasmons of different modes are excited by the bimetallic composite periodic structure, thereby coupling with incident light, thereby improving the sensitivity and quality factor of the refractive index sensor.

The invention belongs to the technical field of materials and electronic information, and discloses a preparation method of a pressure sensor based on Li / Al-LDH enhanced polyacrylamide / xanthan gum dual-network nano conductive hydrogel, an assembly method of a sole three-point pressure sensing intelligent insole based on the pressure sensor and APP function development. The pressure sensor based on the PXL nano conductive hydrogel has extremely high sensitivity and detection accuracy on pressure on the basis of ensuring flexibility, has good linearity of resistance change in a pressure range, shows excellent pressure-sensitive characteristics in the aspects of response / recovery time, repeatability, stability and the like, and has good application prospects. And the advantages of the pressure sensor are fully exerted. After the method is applied to the sole three-point pressure sensing intelligent insole, the intelligent insole is light, small and easy to wear through integrated programming, real-time sole pressure distribution detection can be carried out on a user through an APP, and sports health monitoring and disease prevention are more convenient and economical.

The present invention relates to the field of distributed optical fiber sensing, and discloses a gain differential measurement type high-performance chaotic Brillouin sensing device and method. The output of a chaotic laser source in the device is divided into a first and a second chaotic laser. The first chaotic laser is sequentially divided into a detection light and a differential reference light after passing through a single-sideband modulator, an erbium-doped optical fiber amplifier, and a second beam splitter. The detection light is incident on one end of the sensing optical fiber and outputted from the other end through a first optical circulator to be detected by a first photodetector, and the differential reference light is detected by a second photodetector; the second chaotic laser is sequentially divided into a pump light and a cross-correlation reference light after passing through an optical delay line, a semiconductor optical amplifier, and a third beam splitter. The pump light is amplified and injected into the sensing optical fiber from the other end, and the cross-correlation reference light is detected by a third photodetector; the three-way detection signal is processed by a computer. The present invention can suppress the interference of chaotic intensity noise, improve the system signal-to-noise ratio, and broaden the sensing distance while ensuring high spatial resolution.

The invention discloses a double-frequency single-walled carbon nanotube terahertz metasurface biosensor with high sensing performance, which is composed of two parts, the biosensor comprises an upper carbon nanotube resonator layer and a lower substrate, the resonator layer is composed of double-ring unit structures arranged in a periodic array, all the double-ring unit structures are the same, and the upper substrate and the lower substrate are arranged in parallel. Each unit structure is composed of two circular rings with the middle portions overlapped with each other, and the middles of the two circular rings are communicated. The terahertz metasurface sensor with high sensitivity is realized by combining the excellent photoelectric characteristics of the carbon nanotubes.

The invention relates to preparation and application of a Cu (at) s-Ti3C2Tx composite material. The composite material obtained by the invention is used for analyzing and detecting dopamine by an electrochemical method. The invention designs and prepares an elemental copper nanoparticle loaded thin-layer Ti3C2Tx nanosheet composite material (Cu (at) s-Ti3C2Tx), a LiF / HCl etching method is utilized to prepare multiple layers of Ti3C2Tx, an ultrasonic stripping method is utilized to prepare thin-layer Ti3C2Tx nanosheets (s-Ti3C2Tx), and finally, copper nanoparticles are grown on the s-Ti3C2Tx in situ to form the Cu (at) s-Ti3C2Tx composite material. The s-Ti3C2Tx has a larger effective surface area, and due to the good catalytic activity of the copper nanoparticles and the synergistic effect of the copper nanoparticles and the s-Ti3C2Tx, the Cu (at) s-Ti3C2Tx composite material has excellent electrocatalytic activity. The prepared material has a wide linear range (0.8-150 [mu] M), a low detection limit (0.267 [mu] M) and a high specific surface area (2.16 cm < 2 >) on dopamine detection. The preparation process is simple and convenient, the cost is low, and the obtained material has good electrochemical sensing performance on dopamine.

A cross-scale manufacturing method of a porous flexible piezoresistive sensor with a designable structure comprises the following steps: dispersing a conductive filler in a flexible polymer, and mixing the flexible polymer with water to form an emulsion for later use; preparing a soluble photosensitive resin mold, pouring paraffin, removing the soluble photosensitive resin to prepare a paraffin mold, pouring the prepared emulsion into the paraffin mold, removing the paraffin mold after the flexible polymer is cured, and generating micron-sized pores in the structured flexible polymer through high temperature; electrodes are manufactured on the two sides of the prepared structured porous flexible polymer, and the porous flexible piezoresistive sensor with the designable structure is obtained; the porous flexible piezoresistive sensor prepared by the invention has the characteristics of flexibility, light weight, hyperelasticity, high sensitivity, wide response range and the like, and the sensing performance and application scene adaptability of the flexible piezoresistive sensor as wearable equipment are greatly improved.

The invention provides an innovative acrylic acid-based gel preparation method, and the composite conductive hydrogel with fluorescence and shape memory is prepared. The preparation method is a one-pot method and comprises the following steps: firstly, dissolving anhydrous betaine and chitosan in a mixed solution of acrylic acid and water, then adding a photoinitiator 1173, and carrying out ultrasonic treatment. Through ultraviolet curing, the transparent gel with special functions is obtained. The gel is suitable for the field of information encryption and sensing, has the advantages of luminescence and shape memory under specific illumination, and provides new possibility for development of related technologies.

The electronic device of the present invention comprises: a display module; and a digital converter disposed below the display module, and including a folding portion folded about a folding axis extending in a first direction, and a first non-folding portion and a second non-folding portion spaced apart from each other with the folding portion therebetween in a second direction crossing the first direction. The digital converter includes a plurality of sensing coils, different sensing coils among the plurality of sensing coils are shared by a common line, and the common line is disposed at least in the folded portion.

The invention discloses a method and system for monitoring chloride ions in concrete, belonging to the technical field of concrete monitoring. The chloride ion monitoring system performs multi-point real-time monitoring on the chloride ion concentration inside the concrete through the linear relationship between the fluorescence wavelength change value and the chloride ion concentration. The chloride ion monitoring system comprises an excitation light source, a spectrometer, a filter, a fluorescent probe, and an optical splitter; the fluorescent probe is obtained by encapsulating cesium lead bromide with a porous polymer obtained by reacting octaallyl bromide-POSS with a diamine compound to obtain fluorescent nanoparticles, and click chemistry is performed under ultraviolet light reaction through double bonds in the outer layer of the fluorescent nanoparticles and double bonds on the surface after optical fiber cone modification and thiol, so as to obtain the fluorescent probe through photoplating.

This invention belongs to the field of electronic component technology, and discloses a SnTe material for a nitrogen dioxide gas sensor, its preparation process, and its application. The SnTe material is synthesized via a solvothermal method. The nitrogen dioxide gas sensor mainly consists of a gas-sensitive material and gold interdigitated electrodes. The gas-sensitive material is coated on the surface of the gold interdigitated electrodes with a coating thickness of approximately 15mm to 75mm. The gas-sensitive material is SnTe. This invention provides a simple, low-cost, safe, and controllable TMDC nanomaterial preparation scheme. Using ethanolamine as a solvent and coordinating agent, and potassium hydroxide aqueous solution as a tellurium source activator, this invention synthesizes SnTe nanomaterials in one step via a solvothermal method. The SnTe nanomaterials prepared by this invention achieve a small nanoscale size. A large number of small-sized nanomaterials can effectively increase the sufficient contact between the material and gas molecules, improving the residence rate of gas molecules on the nanomaterial surface.

The invention discloses super-tensile, compression-resistant and double-physical-crosslinking conductive hydrogel based on phytic acid as well as a preparation method and application of the super-tensile, compression-resistant and double-physical-crosslinking conductive hydrogel. The main preparation process comprises the following steps: adding hexadecyl methacrylate into a mixed solution of a surfactant hexadecyl trimethyl ammonium bromide and lithium chloride, completely dissolving, adding an acrylamide monomer, phytic acid and an initiator to obtain a mixed solution, and obtaining the hydrogel by adopting a micelle copolymerization method. The hydrophobic association hydrogel has the advantages that a network structure contains physical interactions such as hydrogen bonds, electrostatic interaction and hydrophobic association, so that the hydrophobic association hydrogel has relatively high mechanical strength and rebound resilience. The hydrophobic association hydrogel sensor is simple in preparation method, rich in raw materials and low in price, has the properties of high mechanical strength, high sensitivity, high rebound resilience and the like compared with traditional hydrogel, and has potential application value in the fields of tissue engineering, flexible electronic skin, intelligent sensors and the like.

A wearable sensor manufacturing system based on silk-screen printing comprises a storage table, a silk-screen printing plate, a scraper and two fixing assemblies. An inclined placing plate is arranged at one end of the material storage table, one end of the silk-screen printing plate is obliquely arranged in the area between the material storage table and the placing plate, the connecting position of the placing plate and the material storage table is an arc-shaped face, the other end of the silk-screen printing plate is arranged on a fixed rail, and two fixing assemblies are arranged on the fixed rail in a sliding fit mode. The two fixing assemblies are clamped with the left side and the right side of the silk-screen printing plate correspondingly. An inclined scraper is arranged on the surface of the silk-screen printing plate, the scraper is attached to the surface of the silk-screen printing plate and reciprocates along the silk-screen printing plate, and a discharging cavity is formed in the position, close to the containing plate, of the top of the storage table. An inclined material plate is arranged on the back face of the silk-screen printing plate, and the base layer corresponds to the silk-screen printing plate in position. A lifting air cylinder is arranged at the bottom of the fixed rail. The interdigital electrode is high in quality and good in conductive effect, and the sensing effect of the sensor is good.

The invention provides a flexible fiber-based organic phototransistor serum amyloid protein A sensor and a preparation method thereof. According to the method, two flexible fibers are used as base materials, one base material is immersed in a dispersed conductive polymer and inorganic nanometer oxide mixed solution, and conductive polymer fibers are obtained and used as a source electrode and a drain electrode of the phototransistor; and the other substrate is a conductive fiber, after uniform inorganic oxide nanorods grow on the surface of the conductive fiber, inorganic quantum dots are adsorbed, and the conductive fiber is used as a grid electrode of the photoelectric transistor. The grid electrode is modified by a silane coupling agent, a serum amyloid protein A antibody solution and a biocompatible solution, and then the source electrode, the drain electrode, the grid electrode and ionic gel electrolyte are assembled to prepare the fiber-based organic phototransistor serum amyloid protein A sensor. The flexible fiber-based organic electrochemical transistor sensor disclosed by the invention is simple in preparation process, low in toxicity, good in repeatability, fast in electrochemical response to serum starch protein A, high in sensitivity and low in detection lower limit.

A silk-screen printing device for manufacturing a flexible sensor comprises a printing table, a silk screen and a scraper. The printing table comprises a low end, a high end, a right side plate and a left side plate, a right silk screen hole and a right material hole are formed in the right side plate, a left silk screen hole and a left material hole are formed in the left side plate, a silk screen groove is formed between the left silk screen hole and the right silk screen hole, a silk screen is inserted into the silk screen groove, and the top of the silk screen is connected with the scraper. And the slurry is tightly accumulated at the bottom of the scraper under the action of gravity and falls down along the silk screen under the action of gravity, so that the slurry can be uniformly distributed on the flexible material, the uniform slurry can generate a uniform conductive layer, and the silk-screen printing effect is relatively good. Therefore, according to the design, the slurry can be evenly distributed on the flexible material, and the screen printing effect is good.