61 results about "Piezo electric" patented technology

The invention provides structures and synthesis of a class of piezoelectric monomers and COFs with fluorine-substituted side chains tethered on the peripheral position of an aromatic moiety (thus different functional side chains). The multi-fluoro groups on the mentioned piezoelectric COFs provide abundant piezoelectric active sites, which enable the application as the active layer for PENGs. The exemplary embodiments also provide a process for the fabrication of a piezoelectric COF and a process for the fabrication of the piezoelectric nanogenerator utilizing mentioned piezoelectric COF.

A painting robot is provided with painting head unit that has a plurality of nozzles to eject droplets and painting head that is provided with piezoelectric substrate to eject the droplets from nozzles, robot arm to move said painting head unit to a desired position, and paint supply mechanism that may be installed between robot arm and painting head unit. Also, paint supply mechanism is provided with paint supply channel to provide paint towards painting head, return flow channel to recover paint that was not discharged from nozzle, an air-operated paint regulator that has been installed in paint supply channel for which the valve opening position can be adjusted in response to the controlled air pressure, and orifice that has been installed on the downstream side of paint supply channel facing painting head side.

The invention relates to a photovoltaic and piezoelectric combined pavement photovoltaic module, and belongs to the technical field of new energy power generation. The photovoltaic tile comprises a bottom protection layer, a multi-layer stacked piezoelectric ceramic array, a photovoltaic tile base, an elastic protection layer, a photovoltaic cell array and a high-pressure-resistant light-transmitting plate from bottom to top, the photovoltaic cell array is arranged in the elastic protection layer; the photovoltaic brick base is provided with through holes arranged in an array, a spring is fixed in each through hole, each spring corresponds to one multi-layer stacked piezoelectric ceramic, and the two ends of each spring are in contact with the elastic protective layer and the multi-layer stacked piezoelectric ceramic respectively; the pavement photovoltaic module further comprises an external protection layer, and the bottom protection layer, the multilayer stacked piezoelectric ceramic array, the photovoltaic brick base, the spring, the elastic protection layer, the photovoltaic cell array and the high-pressure-resistant light-transmitting plate are stacked in the external protection layer. The piezoelectric ceramic is combined with the photovoltaic cell, vehicle rolling and solar energy are fully utilized, dual energy output is achieved, and a sustainable energy solution is provided for an intelligent city.

A battery-operated utility meter for measuring an amount of a liquid delivered from a utility distribution network to a consumption site network. The utility meter comprises a flow tube with an inlet and an outlet for passage of the liquid and a first and a second piezoelectric ultrasonic transducer arranged at the flow tube. A measurement circuit is arranged to transmit and receive ultrasonic signals through the liquid in the flow tube via the piezoelectric ultrasonic transducers and a digital processing unit is arranged for calculating a flow rate of the liquid in the flow tube based on the signals received by the first measurement circuit. The first measurement circuit and the digital processing unit are operated with intervals, to perform a finite duration flow rate measurement. Further, the utility meter includes an analogue second measurement circuit arranged for detecting a pressure transient of the liquid in the flow tube using the first and / or the second piezo electric transducer. The utility meter is arranged to continuously operate the second measurement circuit in a time period in between two adjacent finite duration flow rate measurements, to perform an intermediate pressure transient detection having a duration which is longer than the duration of the finite duration flow rate measurements.

An energy harvesting system 60 comprises a transducer 100 arranged to provide an output signal in response to being deformed by an applied force, and a structure 300 in mechanical communication with the transducer. The structure is arranged to cause deformation of the transducer and comprises a first portion 310, a second portion 320 in contact with the transducer, and one or more third portions 330 connecting the first and second portions. The one or more third portions comprise one or more curved arms. The first portion may be centrally located in the structure and the second portion may be provided around the first portion. The first portion may be rotatable relative to the second portion and may be a shaft or hub. The third portion(s) may vary or taper towards the second portion. The transducer may be piezoelectric or magnetostrictive. The system may be used in a projectile or munition.

A patch pump utilizes piezoelectricity to dispense medicament from a cartridge syringe to a patient. Pump can include a plurality of piezoelectric elements that when energized cause linear motion of a pushrod that interfaces with the syringe in the cartridge to advance the syringe and dispense the medicament. The high torque generated by the piezoelectric elements is directly converted into the same amount of torque on the lead screw, so no torque increasing gear reduction system is needed and the pushrod utilized to drive the syringe can be contained within and connected directly to the motor assembly. Such a piezoelectric-based system can therefore be made smaller and with fewer moving parts than an electromagnetic motor of the same capability such that the pump has a smaller size than has heretofore been possible with prior art electromagnetic-based syringe pumps and other pumps that utilize gear reduction systems.

A workpiece support (18) for supporting a workpiece (14), the workpiece support (18) comprising a workpiece support body (54) and a workpiece support element (20) associated with the workpiece support body (54) for engaging the workpiece (14) and a piezo electric actuator (32) being associated with the workpiece support body (54) for moving the workpiece support element (20) for supporting the workpiece (14). The workpiece support body (54) comprising one or more flexures (44) that enable a movable portion (42) of the workpiece support body (54) to move when acted on by the piezo electric actuator (32) and to move the workpiece support element (20). The workpiece support (18) can comprise two or more workpiece support bodies (54) and a piezo electric actuator (32) being associated with each workpiece support body (54) for moving the respective workpiece support elements (20).

In an example, the present invention provides a laser system. The laser system has a source laser (e.g., CBC) coupled to first mirror device opposing a second mirror device and configured to generate a resonating laser beam between the first mirror and the second mirror. In an example, the system has a piezoelectric device configured to the second mirror device and characterized by a refractive e index such that one or more voids is changed by applying an energy to the piezo electric device to cause a change in a value of the refractive index, e.g., by more than 0.0001, to allow the resonating laser beam or a portion of the resonating laser to traverse through a portion of the second mirror device.

The application provides a ferroelectric metal and a preparation method and application thereof. The ferroelectric metal of the application is composed of cubic silicon carbide crystals and doping elements doped therein, wherein the concentration of the doping elements is greater than or equal to 1*10 18 cm ‑3 The material of the application can be prepared by a chemical vapor deposition method, a high-temperature solution growth method, a solid-phase sintering method, a pulse laser deposition method and the like. Since the conductivity of metal, the switching characteristics of ferroelectric and the force-electric coupling characteristics of piezoelectric are integrated, the ferroelectric metal of the application has great application value in the fields of high-performance transducers, high-sensitivity sensors, low-power micro-electro-mechanical system (MEMS), next-generation multifunctional electronic devices and the like.

A touch panel, the touch panel includes a control substrate, a touch layer and a piezoelectric layer that are stacked; the control substrate includes a first substrate and a control circuit layer arranged on the first substrate, and the touch layer and the piezoelectric layer are located on the control substrate, the control circuit layer comprises a control circuit, and the control circuit is electrically connected with the touch layer and the piezo electric layer respectively, and is configured to apply electrical signals to the touch layer and the piezoelectric layer and / or receive electrical signals from the touch layer and the piezoelectric layer respectively. The touch panel can realize the global tactile feedback function, and has a simple structure and has the advantages of thinner, lighter, lower driving voltage, and lower power consumption.

Provided is a low mass antigen detecting device for quickly and conveniently detecting various types of antigens. In a low mass antigen detecting device for detecting a low mass antigen through a sensor, the sensor includes a piezo-electric substrate, a sensing layer coupled to one surface of the piezo electric substrate and comprising at least one antigen-BSA, an input IDT electrode disposed at one side of the piezo-electric substrate to apply an input frequency provided as a sweep frequency, and an output IDT electrode disposed at the other side of the piezo-electric substrate to output an output frequency.

To generate a driving signal which is scarcely distorted, without needing large power-supply voltages.SOLUTION: A recording device, which performs recording on a recording medium while discharging liquid using a piezoelectric element, comprises amplifying means that amplifies at least either of voltages or currents which have an input waveform to supply the either to the piezoelectric element. The amplifying means has switch means for supplying power-supply voltages for output of the amplifying means and charged means that is charged with the power-supply voltages. The switch means is turned on by at least either of voltages and currents supplied from the charged means.SELECTED DRAWING: Figure 1

The invention concerns a wafer positioning stage with 4 degrees of freedom for use in a cryogenic environment and suited for cryogenic chip probing. 10 Special focus has been attended to realize high speed and considerable lifetime improvements with respect to current piezo based positioners. In the presented concept we introduce cryogenic compatible electromagnetic linear motors in close 15 distance to the contacting probes which enables high speed, no wear and precise displacements. All required 4 degrees of freedom, positioning in X, Y, rotation around Z and probing action Z displacement have been integrated in a stand-alone module. 20 Special attention has been put to keep the substrate table at the desired temperature under moving circumstances and minimizing the dissipation during cryogenic chip probing.

The invention provides a low-interface toughness coating coupling piezoelectric deicing device and a test method. The device comprises a signal generator (1), a power supply (2), a power amplifier (3), a piezoelectric plate (4), a substrate plate (5), a low interface toughness coating (6), a fixed bottom plate (7), a clamping device (8), a fixing device (9) and a vibration meter (10). The invention further relates to a testing method of the device. The device can fully show the state of the ice layer on the surface of the sample, the interface change and the fragmentation or falling process when the coating and the piezoelectric vibration act at the same time; according to the invention, the comprehensive deicing performance of the coupling piezoelectricity of the low-interface toughness coating can be accurately evaluated; the deicing device for coupling the low-interface-toughness coating with the piezoelectricity is easy to build, simple to operate and high in applicability, can quantitatively evaluate the anti-icing / deicing performance of the sample at multiple angles, and provides technical support for development of the field of low-energy-consumption, large-area and efficient deicing.

In an example, the present invention provides a laser system. The laser system has a source laser (e.g., CBC) coupled to first mirror device opposing a second mirror device and configured to generate a resonating laser beam between the first mirror and the second mirror. In an example, the system has a piezoelectric device configured to the second mirror device and characterized by a refractive e index such that one or more voids is changed by applying an energy to the piezo electric device to cause a change in a value of the refractive index, e.g., by more than 0.0001, to allow the resonating laser beam or a portion of the resonating laser to traverse through a portion of the second mirror device.

In an example, the present invention provides a laser system. The laser system has a source laser (e.g., CBC) coupled to first mirror device opposing a second mirror device and configured to generate a resonating laser beam between the first mirror and the second mirror. In an example, the system has a piezoelectric device configured to the second mirror device and characterized by a refractive e index such that one or more voids is changed by applying an energy to the piezo electric device to cause a change in a value of the refractive index, e.g., by more than 0.0001, to allow the resonating laser beam or a portion of the resonating laser to traverse through a portion of the second mirror device.

A piezo electric and thermal harvesting method for rail-transportation systems. The method embodies a three-dimensional arrangement of piezo vertebrae configured in parallel within a track housing that is operatively associated with the rail of the rail-transportation system. Weight from rail traffic compresses the track housing and thus the piezo vertebrae, thereby generating electricity. Thermal control incorporates a chill beam within the track housing as well as a multi-wire thermal electric couple wiring scheme.

The valve system, to be used as a suction valve and / or as a discharge valve in a reciprocating compressor, comprises a valve body, at least one sensor mounted on the valve body and configured to detect a parameter associated to operation of the valve device, and a wireless communication unit electrically coupled to the at least one sensor and configured to transmit information detected by the at least one sensor; the at least one sensor is associated with a fixing member that is inserted in holes of the valve body and that seals the holes. The innovative valve system may comprise further at least one energy harvesting system, which could be for example thermoelectric or piezoelectric, located preferably in or on or at the valve body.

The device includes a test circuit for receiving signals from a piezoelectric horn and a circuit for determining whether the device should be operated in a silent test mode or in a normal mode. Based on the determination that it should be operated in normal mode, the device includes a circuit that enables a driver circuit to drive the piezoelectric horn so that it emits sound when activated by the driver circuit.The circuit, based on a finding that it is operating in silent test mode, is intended to cause the piezoelectric horn to generate a piezoelectric response, with the piezoelectric horn being silent while generating the piezoelectric response during the silent test mode, and to perform an evaluation as to whether the piezoelectric horn is operating correctly or not, based on the signals received from the piezoelectric horn.

This invention introduces a novel energy conversion system and method that synergistically combines the electrohydraulic and piezoelectric effects to enhance electricity generation efficiency. By leveraging the overunity energy potential of cavitation, the system achieves exceptionally high energy efficiency for producing electrical energy. It features a hermetically sealed container filled with a pressurized dielectric liquid, electrodes connected to a high-voltage power source to induce cavitation, and a geometric shape incorporating piezoelectric material to directly convert energy from pressure shock waves into electricity. This approach uniquely exploits cavitation dynamics to generate sustainable and efficient electrical power, offering a scalable solution adaptable to various applications. The invention has the potential to revolutionize renewable energy systems by providing a cleaner and highly efficient source of electricity.

The invention provides a tunnel lining active and passive monitoring method and system based on piezoelectricity, and relates to the technical field of tunnel lining monitoring, the method comprises the steps that a plurality of monitoring faces are arranged in a tunnel lining, each monitoring face is provided with a plurality of piezoelectric sensors, and the monitoring faces are used for dividing effective sections of the tunnel lining; performing passive monitoring based on the piezoelectric sensor, and combining temperature correction and time-frequency diagram conversion to obtain an abnormal section; the abnormal section is actively monitored, piezoelectric driving and model construction are combined, the damage result of the tunnel lining is obtained, and the damage result comprises the damage position, the damage type and the damage degree. According to the invention, the problem that the existing periodic test is insensitive to the acquisition of the damage occurring at the period interval is solved.

The invention provides an alternating-current circuit optimized energy taking device for open-close type installation, which is characterized in that two ends of a first magnetic semi-ring and two ends of a second magnetic semi-ring are connected through piezoelectric elements, and the two piezoelectric elements are connected in series through a wire and are connected with a rectifying circuit; an insulated wire winding is wound on the second magnetic semi-ring, one end of the insulated wire winding is in short circuit with the serially connected piezoelectric element and is connected to the common ground end of the rectifying circuit, and the other end of the insulated wire winding is connected to the rectifying input end of the rectifying circuit. The invention further provides an energy taking method of the alternating current line optimization energy taking device for open-close type installation. According to the invention, the two magnetic-conductive semi-rings are adopted so as to be suitable for open-close type installation, the two magnetic-conductive semi-rings are connected through the piezoelectric element, the electricity taking efficiency of an alternating current line is improved through magnetic-piezoelectric-electricity conversion, mechanical vibration generated by the magnetic-conductive element due to the magnetic pressure effect can be reduced based on the magnetostrictive effect and the piezoelectric effect, and the reliability of the magnetic-conductive element is improved. Therefore, demagnetization of the magnetic conductive element caused by mechanical vibration is relieved.

The ultrasonic device for skin treatment, according to this invention, comprises of the external part consisting of the body of the device (2) where the middle of the body of the device (2) is installed with a light (3) for indicating the operation status of the device, the switch (4) for turning on and turning off the device and the mechanism parts which consists of the source of energy (6) that connects to the circuit control panel (7) contained with the short circuit detection circuit (8), the Bluetooth and / or Wi-Fi receiver and transmitter (9) and the skin temperature monitoring circuit (10). The circuit control panel (7) delivers the electric current to the electromagnetic electrodes (11), the electrical muscle stimulation electrodes (12) and the ultrasonic transducer (1) consisting of the deeper focal length ultrasonic transducer (17) and the shallower focal length ultrasonic transducer (13). Both of the transducers consist of the electrodes connecting to the piezo electric material for delivering the electricity to the piezoelectric material and the solid or semi-solid material such as polymer, metal or gel, which is ultrasonic transmittable for intensifying the ultrasonic wave into the desired skin layer. There is the temperature monitoring probe (21) near the ultrasonic transducer (1) which is connecting to the temperature monitoring circuit (8).

A battery-operated utility meter for measuring an amount of a liquid delivered from a utility distribution network to a consumption site network. The utility meter comprises a flow tube with an inlet and an outlet for passage of the liquid and a first and a second piezoelectric ultrasonic transducer arranged at the flow tube. A measurement circuit is arranged to transmit and receive ultrasonic signals through the liquid in the flow tube via the piezoelectric ultrasonic transducers and a digital processing unit is arranged for calculating a flow rate of the liquid in the flow tube based on the signals received by the first measurement circuit. The first measurement circuit and the digital processing unit are operated with intervals, to perform a finite duration flow rate measurement. Further, the utility meter includes an analogue second measurement circuit arranged for detecting a pressure transient of the liquid in the flow tube using the first and / or the second piezo electric transducer. The utility meter is arranged to continuously operate the second measurement circuit in a time period in between two adjacent finite duration flow rate measurements, to perform an intermediate pressure transient detection having a duration which is longer than the duration of the finite duration flow rate measurements.

A piezo electric device having a configuration that can suppress the formation of a leakage path between electrodes that sandwich a piezoelectric layer and also reduce deterioration in the piezoelectric characteristics, is provided. The piezoelectric device has a first electrode, a piezoelectric layer, and a second electrode stacked in this order on a substrate. The first electrode and the second electrode are arranged so as not to overlap each other in the stacking direction.

To provide an acoustic wave device suppressed in deterioration of pass characteristics.SOLUTION: A filter 20 includes a series arm resonator s21, parallel arm resonators p21-p24, a laminated substrate 40 having main surfaces 40a and 40b, a piezoelectric substrate 50, and a bump electrode 70 (121) disposed on a main surface 50a. The parallel arm resonator p21 includes an IDT electrode disposed on the main surface 50a. The bump electrode 70 (121) is connected to the IDT electrode. The laminated substrate 40 includes a flat electrode 410 disposed on the main surface 40a and joined to the bump electrode 70 (121), a flat electrode 440 disposed on the main surface 40b and connected to the ground, and a plurality of via conductors 81 connecting the flat electrode 410 and the flat electrode 440. In a plan view of the main surface 40a, the bump electrode 70 (121) is located between a via conductor 81a and a via conductor 81b connected to the flat electrode 410. In the parallel arm resonators p21-p24, the parallel arm resonator p21 has the highest resonance frequency.SELECTED DRAWING: Figure 1

The invention discloses a method for measuring the flexoelectric coefficient of a two-dimensional material capable of separating piezoelectricity, and the method comprises the steps: respectively testing N samples with different distance values, the distance value being the distance from the thickness bisecting surface of the two-dimensional material to the thickness bisecting surface of the sample in the thickness direction of a bottom plate in one sample, and the distance value being the distance from the thickness bisecting surface of the two-dimensional material to the thickness bisecting surface of the sample; because the distance value affects the strain state and piezoelectric polarization of the two-dimensional material, the flexoelectric contribution and the piezoelectric contribution are separated according to the total polarization difference of the plurality of samples, thereby accurately measuring the flexoelectric coefficient of the two-dimensional material.

The present invention discloses a method for measuring the flexoelectric coefficient of a separable piezoelectric two-dimensional material, comprising: testing N samples with different distance values ​​respectively, where the distance value is the distance from the thickness bisector of the two-dimensional material to the thickness bisector of the sample along the thickness direction of the base plate in one sample; since the distance value affects the strain state and piezoelectric polarization of the two-dimensional material, the flexoelectric contribution and the piezoelectric contribution are separated according to the total polarization difference of multiple samples, thereby accurately measuring the flexoelectric coefficient of the two-dimensional material.

In an example, the present invention provides a laser system. The laser system has a source laser (e.g., CBC) coupled to first mirror device opposing a second mirror device and configured to generate a resonating laser beam between the first mirror and the second mirror. In an example, the system has a piezoelectric device configured to the second mirror device and characterized by a refractive e index such that one or more voids is changed by applying an energy to the piezo electric device to cause a change in a value of the refractive index, e.g., by more than 0.0001, to allow the resonating laser beam or a portion of the resonating laser to traverse through a portion of the second mirror device.

A vehicle seat system comprises a vehicle seat and a pneumatic system (1). The pneumatic system (1) has the following components: at least one fluid actuator (4) preferably arranged in a vehicle seat; a plurality of pumps (11-41, 12-42) which are operated in a piezoelectric manner or by means of an actuator with a dielectric elastomer; and a common pipeline system (L). The piezoelectric pumps (11-41, 12-42) or the pumps (11-41, 12-42) operated by means of an actuator with a dielectric elastomer are fluidically connected to one another and to the at least one fluid actuator (4) via the common line system, such that the pumps (11-41, 12-42) can be actuated, the at least one fluid actuator (4) is arranged such that the pump affects a fluid pressure or / and a fluid flow in the line system (L) and thus affects a fluid pressure in the at least one fluid actuator (4) or / and a fluid flow into or out of the at least one fluid actuator (4).