61 results about "Sensor materials" patented technology

The invention discloses an alginate-based high-entropy metal oxide as well as a preparation method and application thereof, and belongs to the technical field of gas sensor materials. The preparation method comprises the following steps: mixing a high-entropy metal salt solution of at least five metal sources with an alginate solution to prepare alginate-based high-entropy metal aerogel, and then wrapping the alginate-based high-entropy metal aerogel with carbon cloth and rapidly heating the alginate-based high-entropy metal aerogel by using a Joule thermal method to obtain the nanosheet-shaped alginate-based high-entropy metal oxide. The material can be used for high-sensitivity detection of ethanol gas. The preparation method provided by the invention is green, simple and rapid, has a good sensing response effect in ethanol gas detection, and the sensing material has good stability, can be recycled for multiple times, and has a good application prospect.

This application discloses an embedded whole-cell biosensor, its fabrication method, and its application in machine learning-assisted mercury ion detection, belonging to the field of sensor materials and detection technology. This sensor encapsulates *E. coli* expressing green fluorescent protein (GFP) in a polyacrylamide / hyaluronic acid (PAAM / HA) hydrogel matrix, enabling highly selective and sensitive detection of mercury ions. It effectively eliminates interference from competing metal ions and can be completely regenerated through EDTA-2Na treatment, allowing for repeated use without performance loss. It maintains a stable fluorescence response for up to three weeks, possesses excellent biocompatibility and biodegradability, minimizing the risk of secondary contamination, and facilitates rapid on-site analysis.

In an embodiment a method includes providing a substrate with an electrical functional layer comprising a plurality of functional regions, wherein the functional regions are electrically addressable independently from each other, wherein the plurality of functional regions comprises at least a first group of functional regions and a second group of functional regions, wherein the first group is different from the second group, and wherein at least one functional region is part of the first group and of the second group and performing a multiple-mask process by applying a first mask on the electrical functional layer, wherein the first mask exposes the functional regions of the first group and covers all other functional regions, applying a first sensor material over the exposed functional regions by sputtering, removing the first mask, applying a second mask on the electrical functional layer, wherein the second mask exposes the functional regions of the second group and covers all other functional regions, applying a second sensor material over the exposed functional regions by sputtering and / or performing a functionalizing treatment in the exposed functional regions and removing the second mask.

The invention proposes an optical temperature sensor head, which comprises an optical fiber and a sensor material optically connected to the free end of the optical fiber. The free end of the optical fiber has an overmolding made of a plastic material, which engages on the free end of the optical fiber and forms a protection body. In the protection body a transparent window is arranged. The window permits an optical connection to the free end of the optical fiber. Luminescent radiation from the sensor material can enter into the optical fiber. The effect of the protection body is that the temperature sensor head is mechanically stable and insensitive to environmental influences. The invention also proposes a temperature sensor device having such a temperature sensor head. Finally, the invention proposes an electrical machine, which has a winding with winding wires, which are connected to the proposed temperature sensor head.

The application discloses a preparation method of hollow double-shell ZnSnO3 / SnO2 heterojunction sensor material and application of the material in selective detection of triethylamine, and belongs to the technical field of gas sensors. The preparation method of the hollow double-shell ZnSnO3 / SnO2 heterojunction sensor material comprises the following steps: ZnSn(OH)6 / SnO2.nH2O microsphere precursors are prepared by using a coprecipitation method; the ZnSn(OH)6 / SnO2.nH2O microsphere precursors are added into an organic solvent to perform a solvothermal reaction, and then are calcined to obtain the hollow double-shell ZnSnO3 / SnO2 heterojunction sensor material. The hollow double-shell ZnSnO3 / SnO2 heterojunction sensor material can be used for high-response detection of triethylamine at a low working temperature, has excellent selectivity and stability, and can be used for actual monitoring application of food freshness.

Salmon meat is prone to spoilage during transportation and storage due to its rich protein and fatty acid content. During the spoilage process, the released volatile organic compounds (VOCs) can vary greatly, mainly including trimethylamine (TMA), dimethylamine (DMA), formaldehyde (HCHO), and ammonia (NH3). In this study, an array of quartz crystal microbalance (QCM) gas sensors was established, which was modified with graphene oxide (GO), Mxenes (Ti3C2T X ), hydroxylated multi-walled carbon nanotubes (MWCNTs), and graphdiyne oxide (GO P ), respectively, to detect TMA, DMA, HCHO, and NH3 in salmon meat, respectively. The results showed that the four kinds of sensor materials modified QCM sensors had good sensitivity, selectivity and repeatability for the corresponding target gas. Finally, the freshness of salmon meat was detected using the sensor array. The sensor response data was visualized by principal component analysis (PCA), and the first two principal components (PCs) explained 98.8% of the total contribution variance. A further discriminant model was established using quadratic support vector machine (QSVM), and the classification result was 100%. To further describe, the detection results were compared with the total volatile base nitrogen (TVB-N) content to judge the freshness of salmon meat.

A method for manufacturing an electrochemical cell, in particular an electrolysis cell or a fuel cell, comprising several superimposed layers and / or layers, is proposed, comprising a membrane (1), characterized by the following steps a) at least partial application of at least one sensor material (3) to a surface (2) of the membrane (1) and / or a subgasket surrounding the membrane (1), b) Stacking the layers and / or layers and c) Joining the individual layers and / or layers, preferably by pressing or screwing. Furthermore, the invention relates to a control unit that is configured to carry out a method or individual steps of a method.

The invention discloses a multifunctional full-automatic aggregate silt content determination method and device, and relates to the technical field of sensor material detection. The device comprises a mounting frame, a guide rail arranged on the mounting frame, a sliding piece arranged on the guide rail, a cargo carrying table fixedly connected with the sliding piece, a material collecting barrel arranged on the cargo carrying table, sieve holes formed in the material collecting barrel and a water receiving barrel arranged at the bottom of the mounting frame. The moving assembly is arranged on the mounting frame and comprises a first motor, a rotating wheel connected with the first motor in a matched manner, a rotating rod connected with the rotating wheel, an upper crank and a lower crank which are rotationally arranged on the rotating rod, and a moving seat arranged on the mounting frame; and a flushing assembly; the whole measurement process, including flushing, shaking of the shaking screen and drainage, is automatically completed by a motor and a mechanical structure, so that the traditional operation mode of manual flushing, shaking and drainage is thoroughly changed, and operators are liberated from heavy, repeated and boring labor.

Electrically conductive sensor substrate (1) comprising at least one electrically conductive sensor material in combination with an electrically non-conductive support, with at least two areas, a first, transparent area which serves as a sensor and reacts upon touch and / or approach with analog value changes which can be detected as analog electrical signals and a second, further area which provides digital signals, wherein the sensor substrate has conductors which lead from the first area to at least one component which is arranged on and / or on the second area, and wherein the component converts analog value changes of the sensor into digital signals.

The invention belongs to the technical field of sensor materials, and relates to a c-MOF composite material and a preparation method and application thereof, the preparation method comprises the following steps: (1) providing a substrate, and preparing a bottom electrode on the surface of the substrate through photoetching patterning; (2) growing a metal oxide on the surface of the substrate in situ; and (3) growing a c-MOF material on the surface of the metal oxide in situ to form a multi-stage controllable heterojunction structure so as to obtain the c-MOF composite material. According to the preparation method provided by the invention, the metal oxide can be quickly and controllably grown, the c-MOF material is grown on the surface of the metal oxide in situ, a multi-stage controllable heterojunction structure is formed, more reaction active sites are provided for gas response, high sensitivity, low detection limit and long-term stability at low working temperature are realized, and the preparation method is suitable for various application scenes and has wide application prospects. The method is simple in process, mild in condition, low in production cost and beneficial to large-scale popularization and application.

This invention discloses a pressure measurement system for a sealed reaction vessel, comprising a reaction vessel body, a pressure tapping module, a measurement module, a signal processing module, an early warning module, and a power supply module. By optimizing the location of the pressure tapping ports and the design of the pressure tapping pipeline, this invention avoids interference from turbulent flow fields, liquid and gas accumulation, pipeline blockage, and thermal expansion and contraction of the pressure-tapping medium, significantly improving pressure measurement accuracy. Through the use of redundant backup designs for main and backup pressure tapping ports and measurement branches, it avoids pressure monitoring interruptions caused by single-point failures, effectively preventing safety accidents and improving system reliability. By optimizing sensor materials and sealing structures and adding anti-interference mechanisms, it enhances the system's tolerance to harsh conditions such as high temperature, strong corrosion, and strong vibration, ensuring continuous and stable system operation, reducing maintenance costs, and comprehensively guaranteeing the reaction efficiency, product quality, and production safety of the sealed reaction vessel.

The application belongs to the field of electrochemical biosensors, and discloses a preparation method of an electrochemical biosensor for multi-modal sweat detection, and specifically proposes a single-electrode multi-functional arrangement method in a three-electrode system. The preparation method comprises the selection and modification of electrode materials, the assembly of sensors, and the integration of a signal acquisition and analysis system, by preparing a sensor material with high sensitivity and high selectivity, and then printing and assembling the sensor material into a portable device through screen printing to realize the simultaneous detection of multiple biomarkers in sweat. Through innovative material design and process optimization, the sensor can not only obtain real-time information of multiple biomarkers in sweat, but also provide reliable data analysis, and has excellent long-term stability and anti-interference ability in actual application. The technology provides an effective and reliable solution for real-time health monitoring.

The application discloses a kind of based on pressure pain sensation's bionic flexible touch sensor and robot active protection method, it is related to bionic robot flexible sensing and safety protection field.The sensor adopts DIW integrated printing process, including flexible silica gel base, cross intersection row and column conductive grid and spherical cap micro convex pressure resistance sensing unit, no layering, full flexibility, can adapt to robot complex curved surface whole body.It is based on the critical pressure intensity of sensor material destruction as benchmark, constructs three-stage progressive quantization bionic pain sensation system, through pain sensation value driving robot executes graded protection action, core through expanding force area to eliminate structural risk from root;While constructing whole body partition density bionic skin system, fusion foot bottom pressure and gyroscope data realizes walking balance adjustment.The application gives consideration to sensing accuracy and engineering cost, greatly improves the bionic sensing ability of humanoid robot, operation safety and structure life.

The application discloses a preparation method of a lanthanum ferrite / biochar composite material and application thereof in detection of gas, and belongs to the technical field of gas-sensitive sensor materials. The application first adopts a NaOH solution to treat rice husks, and prepares biochar with a porous structure after calcination, then combines the high specific surface area, porous structure and surface functional groups of the biochar with the P-type semiconductor characteristics and high catalytic activity of LaFeO3, and significantly improves the adsorption capacity and electron transmission efficiency of the composite material to ethanol. Moreover, the LaFeO3 in the composite material obtained by the preparation method of the application is uniformly loaded on the surface of the biochar in the form of regular spherical nanoparticles, and forms a porous interconnected structure, meanwhile, the surface of the biochar still retains rich functional groups such as hydroxyl groups and carboxyl groups, high-sensitivity, low-energy-consumption and high-selectivity detection of ethanol are realized, and the response speed and stability are significantly improved.

The invention discloses a preparation method and application of an electrochemical chiral sensor material L-Ni-BDC / NM88B (Fe) based on a chiral MOF-on-MOF heterostructure, and belongs to the technical field of electrochemical chiral sensing recognition materials. According to the technical scheme, the preparation method comprises the following steps: firstly, dissolving ferric chloride hexahydrate and 2-aminoterephthalic acid in an alkaline solution, and carrying out hydrothermal reaction to prepare NH2-MIL-88B (Fe); and then the NH2-MIL-88B (Fe) is dissolved in an acid solution containing terephthalic acid and nickel chloride hexahydrate, and the composite material Ni-BDC / NM88B (Fe) is prepared through a hydrothermal reaction. And continuously adding EDC and NHS to activate carboxyl of TPA, then adding a protonated cysteine solution, and carrying out an amidation reaction to prepare a target product. A sensor prepared from the material prepared by the invention can quickly and sensitively identify L-tryptophan in tryptophan isomers.

An optical stack for sensing a presence of an analyte is provided. The optical stack includes a sensor material. The sensor material includes a first optical response including a first optical property having a second value in response to an excitation signal including the first optical property having a first value different from the second value. The first optical response includes a second optical property sensitive to the presence of the analyte. The optical stack includes a first optical film disposed proximate the sensor material and includes a third optical property having respective third and fourth values in response to the respective first and second values of the first optical property. The third value is different from the fourth value by at least a factor of 2.

A hydrogen sensor material comprising at least one rod-shaped single crystal with a wurtzite structure made of a semiconductor and a conversion layer formed by a MOF on the surface of the single crystal. The single crystal has a length of 100 nm to 100 μm and a lateral extent of 500 nm to 10 μm. The aspect ratio of the single crystal of length to lateral extent is greater than 3. Furthermore, the invention relates to a production method for a hydrogen sensor material.

Sensor elements are provided for determining at least one analyte concentration in a body fluid. The sensor elements are at least partially implantable into a body tissue and have a substrate and at least two electrodes. One electrode is a working electrode having at least one conductive pad applied to the substrate and at least one electrically conductive sensor material is applied to the conductive pad that includes at least one detector substance adapted to perform an electrically detectable electrochemical detection reaction with the analyte. Another electrode is a counter electrode having at least one counter electrode conductive pad applied to the substrate. The sensor elements also include at least one electrically insulating material that surrounds at least the counter electrode on all sides, where a height of the electrically insulating material at least equals a height of the counter electrode conductive pad.

The purpose of the present invention is to provide an optical sensor material that has sensitivity in a green light region and a red light region, and is suitable for a vacuum deposition process. The present invention is an optical sensor material having a structure that is represented by general formula (1). In general formula (1), R1-R8 are each independently selected from the group consisting of a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, a heteroaryl group, an alkoxy group, a halogen atom, a cyano group, a nitro group, a silyl group, and a boryl group. R9-R12 are each independently an alkyl group that has fewer than 6 carbon atoms. X is an oxygen atom, a sulfur atom, or a selenium atom. Y1-Y4 are each independently selected from the group consisting of NR13, an oxygen atom, and a sulfur atom. R13 is a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, or a heteroaryl group. Z1 and Z2 are each independently selected from the group consisting of a carbon atom, a silicon atom, and a germanium atom.

The invention belongs to the technical field of flexible electronics and sensor materials, and particularly relates to a sensor based on a three-dimensional graphene-hydrogel composite material and a preparation method and application thereof. The sensor comprises a three-dimensional graphene conductive skeleton and dynamic adhesion type hydrogel layers located on at least two side surfaces of the three-dimensional graphene conductive skeleton, wherein the dynamic adhesion type hydrogel layer is formed by copolymerization of acrylic acid, choline chloride, ethylene glycol, lignin-tannic acid nanospheres, an initiator and a cross-linking agent. The sensor can sense signals of strain, pressure and humidity at the same time, and has the advantages of high sensitivity, high stretchability, quick response and excellent environmental adaptability and biocompatibility. According to the invention, the key problems of intrinsic tradeoff, poor interface stability, weak adaptive capacity to environment, single sensing function and the like existing between the sensitivity and the tensile property of the existing flexible sensor can be solved.

This invention provides oxide crystals and methods for producing the same that are suitable for various applications such as scintillator materials, substrate materials, battery materials, sensor materials, dental materials, structural materials, and jewelry. [Solution] The oxide crystal according to one embodiment of the present invention has the general formula (Zr 1-x Hf x ) 1-y (RE z M 1-z ) y O 2-0.5y-p (In the formula, x, y, z, and p each independently satisfy 0 ≤ x ≤ 1, 0 ≤ y ≤ 0.6, 0 ≤ z ≤ 1, and -0.5 ≤ p ≤ 0.5, RE is selected from at least one rare earth element, and M is selected from at least one element from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Mg, and Ca.) It is characterized by being represented as and containing a hydrogen atom (H).

The invention belongs to the technical field of piezoresistive sensors, and relates to a three-dimensional porous piezoresistive sensor and a fusion 3D printing preparation method thereof.The three-dimensional porous piezoresistive sensor is prepared through fusion 3D printing, and the number of printing layers is one; the three-dimensional porous piezoresistive sensor comprises a conductive material unit and a piezoresistive material unit, the conductive material unit is planar, and the piezoresistive material unit is in a shape formed by connecting a plurality of arched structures and is distributed on the surface of one side of the conductive material unit; the material A and the material B are extruded from the same nozzle of a fusion 3D printer and then printed on a bottom plate, and the three-dimensional porous piezoresistive sensor is obtained after cooling; the shrinkage rate of the material A is 3-6% higher than that of the material B, and the shrinkage rate of the material B is smaller than or equal to 0.6%; the material A is a piezoresistive material containing a foaming agent, and the material B is a conductive material; the nozzle temperature is higher than the foaming temperature of the foaming agent. According to the piezoresistive sensor, the response sensitivity to micro pressure can be improved; the preparation method is simple.

The Voltage Image Optical System (VIOS) includes a substrate, an electro-optic modulator, a light source, a detector, and a processor. The electro-optic modulator is separated from the substrate by a buffer material and includes a mirrored pellicle, a transparent electrode, and a polymer dispersed liquid crystal (PDLC) sensor material disposed between the transparent electrode and the mirrored pellicle. The buffer material is disposed between the mirrored pellicle and the substrate. The light source is configured to illuminate the PDLC sensor material during application of a voltage to the transparent electrode, and the detector is configured to detect intensity of light reflected by the mirrored pellicle. The processor is configured to determine whether a pixel electrode on the substrate is a defective pixel electrode or a functioning pixel electrode based on the intensity of the light transmitted by the PDLC and reflected by the mirrored pellicle.

The application discloses a hydrogen sensor based on ligand-protected palladium clusters and a preparation method thereof, and relates to the technical field of gas sensor materials. The hydrogen sensor based on ligand-protected palladium clusters is prepared by the following steps: preparing a ternary composite material dispersion liquid by mixing organic ligand-protected palladium nanoclusters, a sulfonic acid group-containing polymer surfactant and reduced graphene oxide, and then dropping and coating the ternary composite material dispersion liquid on the surface of an alumina ceramic substrate with interdigital electrodes and drying; and the organic ligand-protected palladium nanoclusters are anchored on the surface of reduced graphene oxide sheets by the sulfonic acid group-containing polymer surfactant. The hydrogen sensor based on ligand-protected palladium clusters has the advantages of rapid, sensitive and stable detection, and effectively overcomes the problems of phase transition, hydrogen poisoning and cycle failure in traditional Pd-based sensors, thereby significantly improving the performance stability and service life of the hydrogen sensor. x phase transition, hydrogen poisoning and cycle failure in traditional Pd-based sensors, thereby significantly improving the performance stability and service life of the hydrogen sensor.

Sensor elements are provided for determining at least one analyte concentration in a body fluid. The sensor elements are at least partially implantable into a body tissue and have a substrate and at least two electrodes. One electrode is a working electrode having at least one conductive pad applied to the substrate and at least one electrically conductive sensor material is applied to the conductive pad that includes at least one detector substance adapted to perform an electrically detectable electrochemical detection reaction with the analyte. Another electrode is a counter electrode having at least one counter electrode conductive pad applied to the substrate. The sensor elements also include at least one electrically insulating material that surrounds at least the counter electrode on all sides, where a height of the electrically insulating material at least equals a height of the counter electrode conductive pad.

This invention discloses a big data-based ecological environment monitoring method, comprising: acquiring water bodies in a target area; using nanocomposite materials to collect data from the water bodies to obtain a large amount of raw data; transmitting the large amount of raw data to a big data center; the server in the big data center classifying the large amount of raw data according to the format of "transmitting device number - acquisition time - acquisition spatial location" and storing it in a database; preprocessing the large amount of data in the database to obtain a standard dataset with multiple indicators correlated with time and space; and performing data analysis on the standard dataset to obtain the composition of the water body sample. For water body monitoring, sensor materials have slow response speeds to pollutants such as heavy metal ions and pesticide residues, failing to reflect water quality changes in a timely and accurate manner. This invention makes innovative breakthroughs at the physical and chemical material levels to construct a more comprehensive ecological environment monitoring system.

The application discloses a fluorescent gas sensing material, a preparation method thereof and application thereof in monitoring chlorinated volatile organic compounds, and belongs to the technical field of gas sensor materials. The fluorescent gas sensing material comprises a copper cluster-based metal organic framework material, and a chemical formula of the copper cluster-based metal organic framework material is {[Cu3I3(TPSA)]·CH3CN} n ; wherein TPSA represents N,N',N"-tris(3-pyridyl)thiophosphoric triamide. The application synthesizes the copper cluster-based metal organic framework with cyan fluorescence by a solvothermal method, and realizes rapid and sensitive detection of CH2Cl2, CHCl3 and 1,2-DCE steam by taking the copper cluster-based metal organic framework as a fluorescent gas sensing material. Among them, the detection of dichloromethane steam is the most sensitive and rapid, the minimum detection limit is 0.4 Pa (3.7 ppm), and the response time is 10 s.

A method for producing a sensor assembly is provided The method comprises the steps of providing a sensor material sheet comprising a plurality of sensor units, a plurality of bridging strips and a remainder of the sensor material sheet, arranged such that the sensor units are separated from each other and each bridging strip interconnects a sensor unit with the remainder of the sensor material sheet; arranging a flexible adhesive sheet overlaying one side of the sensor material sheet, such that the sensor material sheet adheres to the flexible adhesive sheet; separating the remainder of the sensor material sheet from the adhesive sheet, causing each bridging strip to disengage from the sensor units, such that the sensor units remain on the adhesive sheet; arranging the adhesive sheet with the sensor units facing a flexible substrate with a plurality of electrodes disposed thereon; aligning each sensor unit with an associated first electrode and an associated second electrode; and joining the adhesive sheet and the flexible substrate such that the adhesive sheet adheres to the flexible substrate, thereby sandwiching at least the plurality of sensor units and the plurality of electrodes therebetween. A sensor assembly is also provided.

This invention represents a system for testing the material properties of film-type gas sensors. It consists of two parts: the gas sensor testing system in the probe head station, which has a designed mechanism. A small probe assembly with a positioning adjuster that allows for fine adjustment of the probe position to a minimum level. 1 milliliter with freedom of positioning and movement in 3 axes in the base assembly. Floating heaters are made of nickel-chromium coils in such a way that the coils are stretched between two posts. It features a thermocouple temperature sensor housed in a ceramic tube to measure the temperature from the back of the plate. Sensor mounting base;

The application discloses a kind of alginate-based high-entropy metal oxides and preparation method and application thereof, belong to gas sensor material technical field.The application uses the high-entropy metal salt solution of at least five kinds of metal sources and alginate solution is mixed, and alginate-based high-entropy metal aerogel is prepared, and then carbon cloth is wrapped, and nanometer sheet-shaped alginate-based high-entropy metal oxide is obtained by using Joule heating method rapid heating.The material can be used for high-sensitivity detection of ethanol gas.The preparation method in the application is green, simple, fast, has good sensing response effect in ethanol gas detection, and the sensing material has good stability, can be recycled multiple times, and has good application prospect.