5 results about "Electrode polarisation" patented technology

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.

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.

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.