13 results about "Electrode polarisation" patented technology

This invention, in the field of geophysical electromagnetic exploration technology, discloses a system and method for evaluating the grouting effect at the working face based on the charge-induced polarization method. A power supply device and a receiving device are deployed around the grouting drill rod at the working face. The power supply device includes power supply electrodes that directly charge the water body. The receiving device includes multiple non-polarized electrodes uniformly distributed on the working face. The method includes: after the power supply current stabilizes, injecting a high-conductivity, high-polarization solution into the water body in front of the working face, and during the injection of grout into the water body in front of the working face, acquiring the electric field components received by the multiple non-polarized electrodes. For the data received at the same time, the distribution data of electrical parameters at the working face are calculated to determine the changes in the distribution of the water body in front of the working face, and to infer the grout migration and solidification process. By setting up power supply electrodes directly connected to the water body in front of the working face, observation data can be acquired in real time before and during grouting, realizing dynamic monitoring of the grouting effect during the grouting process.

Provided is an electrode including: a polarizable electrode layer; and a non-polarizable electrode layer laminated on the polarizable electrode layer. The non-polarizable electrode layer includes silver, silver chloride, and a corrosion inhibitor for the silver. The corrosion inhibitor is a polymer-based corrosion inhibitor.

An electro-optical method and device that allows for efficient polarization of ferroelectric devices. The electro-optical device includes a waveguide, a barium titanate (BTO) layer adjacent the waveguide. One or more polarization electrodes are provided for polarizing the Pockels material.

The invention discloses a test calibration method and device for a non-polarized electrode. The method comprises the following steps: constructing a standard electric field test environment; synchronously acquiring response signals of the measured electrode and the reference electrode; calculating performance parameters such as direct current drift, range, long-term stability and noise power spectral density of the measured electrode; and comparing the parameters with corresponding parameters of the reference electrode to finish calibration. The device comprises a standard electric field generation system, a data acquisition and measurement system and an environment control and guarantee system. According to the invention, multi-parameter, high-precision and traceable systematic testing and calibration of the non-polarized electrode are realized.

This invention provides a method for fabricating a metal electrode for signal acquisition and / or transcranial electrical stimulation. The method produces a non-polar metal electrode with a titanium substrate, a platinum layer, and a silver chloride layer arranged sequentially from inner to outer layers. The good machinability of titanium allows the electrode to be easily fabricated into various shapes, making it suitable for diverse applications. The high conductivity of platinum allows for the fabrication of a high-performance, integrated electrode that performs well as both a cathode and anode, accommodating switching between two operating modes. Platinum achieves a conductivity of 75 A / dm². 2 The loss rate at current density is extremely low, so when this metal electrode is applied to transcranial electrical stimulation, it is also corrosion resistant and has a long service life. The material properties of platinum can be utilized to easily form a silver chloride layer on its outer layer, resulting in a non-polarized electrode. The platinum layer is very thin, which allows the electrode to maintain low cost and is suitable for large-scale application in various fields.

The application provides an integrated ceramic core shell integrated with a piezoelectric sensor, and a preparation and monitoring method thereof, and relates to the technical field of ceramic core preparation.The ceramic core shell comprises a ceramic base formed through an additive manufacturing process, a piezoelectric sensing unit embedded in a monitoring area, a protective shell for sealing the sensing unit, and a signal transmission line embedded in the protective shell.The preparation method comprises the following steps: determining the monitoring area based on thermal-mechanical coupling simulation and constructing a three-dimensional digital model; printing the ceramic base, the piezoelectric sensing unit and its polarization electrode, and the synchronously formed protective shell and signal transmission line in sequence through a multi-material additive manufacturing process; and performing integrated sintering and polarization treatment on the green body.The application realizes integrated manufacturing and integration of the sensor and the ceramic structure, and solves the problem that traditional external sensors cannot reliably monitor the inside of a high-temperature and complex-structure casting core.

The invention discloses a high-strength solid non-polarized electrode and a preparation method thereof. The electrode comprises a polyvinyl chloride tube, an upper end sealing cover, a lower end opening bottom cover, a lower end porous low-permeability ceramic chip, a kaolin salt bridge containing electrolyte, a polyvinyl chloride channel, a lead wire and an external wire. A certain proportion of high-strength quartz sand is doped into the kaolin salt bridge, so that the environmental adaptability of the electrode is improved, and the service life of the electrode is prolonged. In addition, the invention also provides a preparation method of the electrode, and the preparation method comprises the steps of kaolin salt bridge preparation and filling, integral sealing and the like. The electrode is suitable for long-term earth potential observation in a field extreme environment, and has the advantages of being high in structural strength, good in environmental adaptability and long in service life.

This invention provides a lead-acid storage battery with a medium or greater capacity. However, it allows only a very small current to flow into lead-acid storage batteries, which have a structure that enables this. Prevents the fracture of the positive electrode strip from stretching of the positive electrode plate which occurs in... For effective long-term operation, this invention is a lead-acid battery. It consists of a group of electrode plates in which the positive and negative electrode plates are connected. Laminates are alternately layered over protruding segmented plates to connect the strip couplers of polarized electrode plates. Similarly, in the group of electrode plates and electrode holders, which connect the strips and electrode terminals, there are... A characteristic feature is the distance from the two edges of the joint between the electrode placement areas on the top side. The positive electrode and the positive electrode bar reach the end of the positive electrode bar in the longitudinal direction, which Appearing on the same side as each edge section, the width of the positive electrode strip is 0 to 20 millimeters. 10 to 25 millimeters, and the thickness of the positive electrode strip is 5 to 15 millimeters, and in addition... The height of the positive electrode plate, excluding the protruding part and the lower base, is 180 millimeters. more than

The application discloses a kind of high-pressure polarization quantum dot electrode preparation process without attenuation, belongs to energy storage electrode preparation technical field.The process includes five core steps of quantum dot pretreatment, electrode coating, drying, two-way differentiation polarization, post-processing, by surface pretreatment to carbon quantum dots and silicon oxide quantum dots, optimize coating process, adopt two-way differentiation polarization of accurate temperature control, control field, combined with post-processing solidification, prepare anode polarization carbon quantum dot positive electrode and cathode polarization silicon oxide quantum dot negative electrode.The polarization quantum dot electrode prepared in the application has strong charge trap stability, non-decay charge density, complete electrode structure, no cracking, falling phenomenon when working in the range of 0.1V to infinite high voltage, adapts to infinite high-voltage energy storage device, solves the technical pain points of existing polarization electrode performance attenuation under high pressure, structure damage.

The invention provides an induced polarization electrode stem advanced prediction system push rod position detection system and method, and the system comprises a cutter head, a plurality of electrode telescoping devices are uniformly installed on the cutter head, each electrode telescoping device comprises an oil cylinder and an electrode tip, and a pull rope type displacement sensor is installed on each electrode telescoping device. A sensor body of the pull rope type displacement sensor is fixed to the tail of the oil cylinder, a pull rope of the pull rope type displacement sensor is fixed to the electrode tip, the pull rope type displacement sensor generates displacement signals of the electrode telescopic devices when the electrode tip acts, and a sensor communication line of the pull rope type displacement sensor is connected to a host. The system has the advantages of being stable in installation, convenient in wiring, and capable of rapidly checking obstacle points according to sensor feedback.

The application discloses a kind of semi-submarine electromagnetic detection device and method, solve the technical problem that present technical cannot accurately characterize deep sulfide mine distribution.Its device includes seabed fixed transmitting device, underwater autonomous robot receiving system, the seabed fixed transmitting system includes seabed current source transmitting device and anchoring unit, sensor receiving array and data acquisition module are installed on the underwater autonomous robot receiving system;The seabed current source transmitting device includes transmitting source control bin, first watertight cable, transmitting end positive pole and transmitting end negative pole, the anchoring unit includes anchor body, acoustic positioning beacon, the sensor receiving array includes electric field collection bin, second watertight cable and several pairs of Ag / AgCl non-polarization electrode and three-component magnetometer.The application can more accurately detect the distribution characteristics of deep seabed sulfide, reduce drilling risk, improve the accuracy of exploration and the reliability of resource quantity evaluation.

This invention discloses a surface acoustic wave (SAW) filter based on periodic ferroelectric domains and its implementation method. The invention employs a ferroelectric domain polarizer to cause polarization reversal in a ferroelectric semiconductor thin film. Multiple concentric ring-shaped narrow ferroelectric domains with alternating ferroelectric polarization directions are formed beneath the ferroelectric semiconductor thin film between two adjacent polarization electrodes, resulting in a periodic ferroelectric domain thin film. A sheet-like filter input electrode is formed on the periodic ferroelectric domain thin film. Upon receiving an in-phase voltage, the ferroelectric domains with opposite polarization directions automatically generate oscillations in opposite directions, forming a surface acoustic wave standing wave. The operating frequency of the filter is determined by the width of the narrow ferroelectric domains, which is modulated by the voltage and frequency of the applied amplitude-modulated alternating current. Narrow ferroelectric domains with smaller widths are easier to fabricate; therefore, the operating frequency of the filter in this invention is not limited and can operate at higher frequencies. This invention has applications in fields such as radio frequency communication and 6G network transmission, high-precision radar, and remote sensing monitoring.

The application provides a kind of space charge measurement electrically excited ellipsometric joint detection system and method, the high voltage pulse source of the excitation part generates electric pulse, disturbs the space charge accumulated in the interior of insulating sample and excites elastic wave, the elastic wave is transmitted to the photoelastic sensor that is attached to the surface of polarization electrode, causes the refractive index change of sensor;Subsequently, the detection part adopts the ellipsometric measurement light path, is polarized after polaroid and is incident to photoelastic sensor, and the reflected light is decomposed into two orthogonal polarized lights by 1 / 4 wave plate and Wollaston prism in turn, and the light intensity difference is detected by balanced detector difference, so that the elastic wave signal is converted into electrical signal output.The physical isolation of detection end and high voltage loop is realized, and the breakdown risk of capacitive isolation is avoided;At the same time, since the detection laser does not need to be in direct contact with the sample, the damage of the original electric field distribution of the insulating sample by the full contact structure is eliminated, and the measurement result more truly reflects the original state of the internal space charge of the insulating sample.