23 results about "Ion sensing" patented technology

Aspects provide a device comprising: a substrate doped to form a first well; a first deep trench etched in the substrate; a dielectric in the first deep trench; a first conductor within the dielectric in the first deep trench and biased to create a first depletion region in the substrate proximate the first deep trench, wherein the substrate forms a bottom electrode of a first deep trench isolation varactor and the conductor in the first deep trench forms a top electrode of the first deep trench isolation varactor; a sense electrode operable to become electrically charged when interacting with an ionized fluid, wherein the sense electrode is operable to electrically charge the first deep trench isolation varactor; and a fluid property measurement circuit operable to determine a change in the capacitance of the first deep trench isolation varactor and output a fluid property signal.

The invention provides a sensing device based on a stretchable metasurface and a heavy metal ion sensing method, and belongs to the technical field of optical sensing. The device comprises a flexible stretchable substrate and an optical metasurface arranged on the flexible stretchable substrate, a periodic nanostructure of the device can spontaneously suck liquid to be measured through the capillary effect, and meanwhile the metasurface period can be changed by stretching the substrate so as to tune the wavelength of an optical formant. The method comprises the following steps: applying strain to tune wavelength, introducing liquid to be measured to spontaneously fill, collecting spectrum and analyzing spectrum characteristics to determine the heavy metal ions. According to the invention, through integration of mechanical tuning and capillary sampling functions, the existing technical problems are solved, multi-dimensional detection based on wavelength selection and spectral line analysis is realized, and the device has the beneficial effects of high selectivity, high sensitivity, portability and capability of realizing multi-ion parallel detection.

The application discloses a display panel and a display device. The display panel has a display area and a non-display area arranged at the periphery of the display area; the display panel comprises: an array substrate; a counter substrate arranged on one side of the array substrate; and a liquid crystal layer arranged between the array substrate and the counter substrate; wherein the non-display area of the display panel is provided with an ion dispersion structure, and the ion dispersion structure comprises: an ion sensing element for sensing the concentration of charged ions in the liquid crystal layer; a charge output element which is arranged in a spaced manner with the ion sensing element and is used for receiving a charge output by a control circuit, the charge having the same polarity as the charged ions in the liquid crystal layer; and a porous ion adsorption carrier which is arranged in a spaced manner with the ion sensing element and the charge output element and is used for adsorbing the charged ions in the liquid crystal layer. Through the above arrangement, the charged ions in the liquid crystal layer can be eliminated, and the problem that the charged ions in the liquid crystal layer of the display panel in the related art cause display residual image, the response speed of the display panel and the display stability to decrease can be solved.

Inductors and biased deep trench isolation (DTI) varactors may detect the type and concentration of ions in a fluid. An ion sensing device comprises: a deep trench isolation varactor in a substrate having a dielectric and a conductor and biased to create a depletion region in the substrate proximate the deep trench; a sense electrode operable to become electrically charged when interacting with an ionized fluid, wherein the sense electrode is operable to electrically charge the deep trench isolation varactor; an inductor proximate the deep trench isolation varactor and configured so that a change of a characteristic of the deep trench isolation varactor induces a change in the quality factor of the inductor; and a fluid property measurement circuit operable to determine a change in the quality factor of the inductor and output a fluid property signal.

Hydrocarbon enhanced ionophore-based ion-selective optodes (ISOs) and methods of their use are provided. The ISOs exhibit improved ultrasensitive ion sensing due to the addition of ultralow-polarity hydrocarbons to the sensing phase using specific ratios of sensing phase components. The ISOs can be operated under an exhaustive or non-exhaustive extraction response mode.

The application discloses a paper-based arsenic ion synthetic biosensor based on a cell-free system and application thereof, and comprises a cell-free arsenic ion sensing module and a semi-quantitative paper-based detection chip. The cell-free arsenic ion sensing module is composed of a synthetic arsenate reduction module, an arsenic ion specificity sensing module, a high-gain transcription amplification module and a visual reporting module connected in sequence. The synthetic arsenate reduction module converts pentavalent arsenic into trivalent arsenic; the arsenic ion specificity sensing module recognizes trivalent arsenic and removes transcription inhibition; the high-gain transcription amplification module amplifies the signal through ecf11 cascade; and the visual reporting module outputs a colorimetric or fluorescent signal. The application integrates an engineered promoter and an ecf11 cascade amplification system in a cell-free system, greatly improves sensitivity and dynamic range and keeps low leakage. The paper-based chip can present different pattern arrangements according to arsenic concentration and is easy to read. The application provides an environmentally friendly, portable and easy-to-read innovative method for monitoring arsenic pollution in drinking water.

Hydrocarbon enhanced ionophore-based ion-selective optodes (ISOs) and methods of their use are provided. The ISOs exhibit improved ultrasensitive ion sensing due to the addition of ultralow-polarity hydrocarbons to the sensing phase using specific ratios of sensing phase components. The ISOs can be operated under an exhaustive or non-exhaustive extraction response mode.

This invention discloses an intelligent monitoring method and system for chloride ion content based on multi-source data correction, belonging to the field of intelligent chloride ion content monitoring technology. The method includes: acquiring chloride ion sensing data and electrolysis process parameters during copper foil electrolysis production to construct a basic monitoring data set; identifying stable operating intervals based on the basic monitoring data set and generating a micro-perturbation control sequence to be applied to the electrolysis process to create a perturbation state; extracting the time interval and preceding / following neighborhoods of the perturbation effect to construct a perturbation response data sequence; segmenting the perturbation response data sequence to extract the response change amplitude, change rate, and recovery characteristics to form a perturbation response feature set; performing consistency analysis based on the response characteristics to identify and correct abnormal response intervals, obtaining a correction sequence; performing continuity screening and fluctuation convergence processing on the correction sequence to output the target chloride ion content value. This invention achieves dynamic and accurate monitoring of chloride ion content.

In described examples, a biosensor device has a porous membrane with a test region that contains a test analyte. A sensor die has an ion sensing field effect transistor (ISFET) with an ion sensitive gate element located in an active sensor surface of the sensor die. The active sensor surface is in contact with the porous membrane test region. A controller is coupled to the ISFET and an interface module is coupled to the controller to provide a human readable test result.

The application provides an ion sensing slurry and a preparation method thereof, a textile ion sensor and a preparation method and application thereof, and relates to the technical field of sensors.The ion sensing slurry provided by the application comprises graphene, water-based polyurethane and silk fibroin; the mass of the silk fibroin is 5-25% of the total mass of the graphene and the water-based polyurethane; and the mass of the graphene is 5-15% of the total mass of the graphene and the water-based polyurethane.The ion sensing slurry provided by the application has the function of ion sensing, is printed onto the surface of a fabric, and the obtained textile ion sensor can effectively detect urine protein in urine, realizes the monitoring of human life and health, and has good mechanical strength and bending resistance.

The invention discloses a calixarene derivative and a preparation method and application thereof, the structure of the calixarene derivative is as shown in formula I: R1 is CO2-NH4 < + >; r2 is any one of straight-chain alkyl, branched-chain alkyl, straight-chain alkyl containing double bonds and branched-chain alkyl containing double bonds. According to the invention, iodobalix [4] arene and an alkynyl-containing phenyl compound are connected through a Sonogashira coupling reaction to construct an extended aromatic macrocyclic skeleton, and then an ionic water-soluble structure is obtained through upper edge ester group hydrolysis. The calixarene derivative has the following innovative advantages that the depth and the volume of a cavity are remarkably increased, and large-volume guest molecules can be efficiently included; the extended cavity realizes effective inclusion of guest molecules through hydrophobic interaction and Van der Waals force; an upper edge carboxylate radical ion group specifically recognizes a cationic object through electrostatic interaction, so that the multi-site recognition function of enzyme is simulated; the water solubility is enhanced, and the method is suitable for the biological medicine fields of drug delivery, ion sensing and the like.

The application discloses a kind of monolithic three-dimensional integrated differential amplification circuit ion sensing system and preparation method thereof, belong to MEMS technical field, including differential amplification circuit and ion-sensitive field effect transistor, by setting molybdenum disulfide layer in differential amplification circuit, and ion-sensitive field effect transistor is set on molybdenum disulfide layer, through the two ion-sensitive membranes set on two gates synchronous work under differential amplification circuit, one ion-sensitive membrane senses ion signal in the liquid to be measured, another ion-sensitive membrane senses environmental noise, through ion-sensitive field effect transistor and differential amplification circuit, the difference of two end output signals is extracted and amplified, while retaining target ion response signal, environmental noise is inhibited, high-precision, high-sensitivity detection to target ion concentration is realized;And the whole ion sensing system only occupies the area of two FETs, reduces chip plane area, realizes the chip-level miniaturization and high integration of ion sensing system.

The invention discloses an ion sensing system of a monolithic three-dimensional integrated differential amplification circuit and a preparation method of the ion sensing system, and belongs to the technical field of MEMS, the ion sensing system comprises a differential amplification circuit and an ion sensitive field effect transistor, a molybdenum disulfide layer is arranged in the differential amplification circuit, and the ion sensitive field effect transistor is arranged on the molybdenum disulfide layer. Two ion sensitive films arranged on two grid electrodes synchronously work under a differential amplification circuit, one ion sensitive film senses ion signals in liquid to be detected, the other ion sensitive film senses environmental noise, and the difference value of output signals at the two ends is extracted and amplified through an ion sensitive field effect transistor and the differential amplification circuit. Environmental noise is suppressed while target ion response signals are reserved, and high-precision and high-sensitivity detection of target ion concentration is realized; and the whole ion sensing system only occupies the area of two FETs, so that the plane area of a chip is reduced, and chip-level miniaturization and high integration of the ion sensing system are realized.

Aspects provide a device comprising: a substrate doped to form a first well; a first deep trench etched in the substrate; a dielectric in the first deep trench; a first conductor within the dielectric in the first deep trench and biased to create a first depletion region in the substrate proximate the first deep trench, wherein the substrate forms a bottom electrode of a first deep trench isolation varactor and the conductor in the first deep trench forms a top electrode of the first deep trench isolation varactor; a sense electrode operable to become electrically charged when interacting with an ionized fluid, wherein the sense electrode is operable to electrically charge the first deep trench isolation varactor; and a fluid property measurement circuit operable to determine a change in the capacitance of the first deep trench isolation varactor and output a fluid property signal.

The application discloses a crystal material based on a cadmium-viologen complex, a preparation method and application of the crystal material. II (Btybipy)Cl4; wherein Btybipy is a double 1-(thienyl)-3-methyl-4,4'-bipyridyl-1-onium. II The application is connected with a cadmium-viologen complex with chlorine as a counter anion to form a zero-dimensional crystal material. (Btybipy)Cl4 is a zero-dimensional structure, and has the advantages of simple synthesis method and convenient purification; the viologen compound is used as a nitrogen-containing ligand, the viologen ligand has good water solubility, is beneficial to crystallization of the crystal material, and improves a synthesis yield; the synthesized crystal material is sensitive to light and a solvent, can occur a photochromic phenomenon, and can be applied as an ion sensing material.

The invention provides a piezoelectric ion sensing-based diabetic foot necrosis tissue identification method and system, and relates to biosensing and clinical detection. A piezoelectric ion sensing probe is in contact with the surface of a diabetic foot target tissue to obtain a to-be-detected electric signal, the to-be-detected electric signal is amplified, filtered and subjected to analog-to-digital conversion to obtain a digital to-be-detected electric signal, the digital to-be-detected electric signal is compared with a standard electric signal in a pre-constructed tissue electric signal database, and the tissue type is recognized through a mode matching algorithm. And determining an interface position of the necrotic tissue and the suspected necrotic tissue, outputting an identification result and generating a visual image. The piezoelectric ion sensing probe is in contact with the surface of the target tissue of the diabetic foot to obtain a to-be-detected electric signal, the tissue type is recognized through a pattern matching algorithm, and non-invasive, accurate and rapid recognition of the interface between the necrotic tissue and the suspected necrotic tissue of the diabetic foot is achieved. And a piezoelectric ion material and zinc ion-containing polymer composite sensing technology is further adopted, so that the accuracy of interface recognition is further improved.

Inductors and biased deep trench isolation (DTI) varactors may detect the type and concentration of ions in a fluid. An ion sensing device comprises: a deep trench isolation varactor in a substrate having a dielectric and a conductor and biased to create a depletion region in the substrate proximate the deep trench; a sense electrode operable to become electrically charged when interacting with an ionized fluid, wherein the sense electrode is operable to electrically charge the deep trench isolation varactor; an inductor proximate the deep trench isolation varactor and configured so that a change of a characteristic of the deep trench isolation varactor induces a change in the quality factor of the inductor; and a fluid property measurement circuit operable to determine a change in the quality factor of the inductor and output a fluid property signal.

The application discloses a method for constructing an organic electrochemical transistor ion sensing device based on a printing technology. The method comprises the following steps: taking a PI film as a flexible substrate of an organic electrochemical transistor, using a silk screen to make an electrode layer on the substrate to obtain the organic electrochemical transistor, then modifying a polyelectrolyte layer on a channel of the organic electrochemical transistor to obtain the polyelectrolyte layer, finally, modifying an ion-selective membrane on the channel of the organic electrochemical transistor with the polyelectrolyte layer to obtain the final organic electrochemical transistor ion sensing device, and exploring the feasibility of the device for ion sensing through a series of electrical characterization methods. The method combines the organic electrochemical transistor technology and the printing technology, prepares the organic electrochemical transistor flexible ion sensing device based on a flexible material substrate, is used for ion content detection, greatly reduces production cost, improves production efficiency, and meets the requirements of device and biological body adaptation and the like.

The invention discloses a water algae detection device based on a GaN chip and a detection method for water algae thereof.The device is formed by integrating a microcystin sensor, a chlorophyll sensor and an ammonium ion sensor which share a substrate layer and a cover plate, and the structure of each unit sequentially comprises a gallium nitride layer, an aluminum gallium nitrogen barrier layer and a gallium nitride cap layer from bottom to top; a source electrode, a drain electrode and a grid electrode region are arranged on the gallium nitride cap layer in parallel, a sensing film with a microcystin and chlorophyll a combination function and an organic molecular polymer serving as an ammonium ion sensing film are deposited on the surface of the grid electrode region of each unit, and the aluminum gallium nitrogen barrier layer and the gallium nitride layer in the sensor form a heterojunction. Two-dimensional electron gas is formed in the channel and is sensitive to potential change of the surface of the grid electrode, and compared with a traditional water algae detection means, the method is more portable, detection is rapid, and the result is accurate.

The application discloses a micro-array type concrete chloride ion sensor and a measurement data correction method. The micro-array type chloride ion sensing sensor is composed of Ag / AgCl selective electrodes, a micro-MnO2 reference electrode array, a shell, connecting wires and a packaging material. The Ag / AgCl selective electrode array and the long-acting micro-MnO2 reference electrode array are nested with each other, so that the same number of Ag / AgCl selective electrodes are distributed at equal intervals around each micro-MnO2 reference electrode. The measurement data correction method is that the array type chloride ion sensing sensor collects concrete chloride ion concentration data through the electrode pair composed of the Ag / AgCl selective electrode and the adjacent micro-MnO2 reference electrode, and calibrates the data by using the difference between the micro-MnO2 reference electrode and the rest of the micro-MnO2 reference electrode groups in the array. The micro-array type chloride ion sensing sensor can improve the repeatability and reliability of the monitoring results of the chloride ion concentration in the concrete and inverses the concentration gradient of the chloride ion in the concrete.

Aspects provide fluid ion sensing via inductors using deep trench isolation, comprising: a coil-shaped deep trench etched in a substrate, a dielectric in the deep trench, a conductor within the dielectric in the deep trench, wherein the conductor forms a deep trench inductor, a sense electrode operable to become electrically charged when interacting with an ionized fluid, wherein the sense electrode is operable to electrically communicate with the deep trench inductor, and a fluid property measurement circuit operable to measure a quality factor or inductance of the deep trench inductor and output a fluid property signal.

Aspects provide fluid ion sensing via inductors using deep trench isolation, comprising: a coil-shaped deep trench etched in a substrate, a dielectric in the deep trench, a conductor within the dielectric in the deep trench, wherein the conductor forms a deep trench inductor, a sense electrode operable to become electrically charged when interacting with an ionized fluid, wherein the sense electrode is operable to electrically communicate with the deep trench inductor, and a fluid property measurement circuit operable to measure a quality factor or inductance of the deep trench inductor and output a fluid property signal.

The purpose of the present invention is to provide an electrode body for an ion sensor in which the bonding strength is improved without relying on the material of the electrode body and the ion-sensing film, thereby reducing the cases of poor performance. To this end, the electrode body for an ion sensor according to the present invention comprises: an internal electrode for outputting an electric potential to an ion sensing film; and an electrode body that accommodates an internal solution that electrically connects the internal electrode and the ion-sensing film, the electrode body having a flow path through which a liquid containing a specimen to be measured flows and a placement surface on which the ion-sensing film is placed, and the placement surface and the ion-sensing film are welded via a compatibilizer.