54 results about "Electroactive polymers" patented technology

The invention belongs to the technical field of intelligent scooters, provides a dynamic supporting type self-adaptive scooter based on artificial intelligence, and innovatively solves the defects of an existing scooter in the conversion process of a sitting posture and a standing posture by combining an intelligent AI model, a 360-degree somatosensory camera, sensor data and an electroactive polymer supporting system. Through the self-adaptive adjusting function of the AI model, the system can accurately carry out dynamic supporting adjustment in real time according to the posture, pressure and body shape of the user, and comfort, stability and health of each stage are ensured.

A control surface system for a body located in an air and / or space vehicle. The control surface system having at least one control surface which is located on the body and which, by moving relatively to the body, enables air flow to be controlled and the air vehicle to maneuver accordingly. The control surface system having at least one actuator which is made of an electroactive polymer material which is located on the body and which changes its form depending on electrical energy and based thereon, triggers the control surface.

The invention discloses an ablation therapy auxiliary device for the interventional department, and relates to the technical field of medical instruments, the ablation therapy auxiliary device comprises two sets of multi-axis arms, a multi-layer annular gradient magnetic field generator is arranged at the tail end of the other set of multi-axis arms, and a spherical magnetorheological fluid cavity, a laminated electroactive polymer film and a flexible supporting layer structure are adopted through an ablation needle assembly; according to the composite driving mode combining the magnetorheological fluid and the pneumatic micro push rod, the viscosity of the magnetorheological fluid can be rapidly changed under the action of a magnetic field, large-angle flexible rotation of the joint is achieved, the electroactive polymer film can be accurately and finely adjusted at a small angle, and the pneumatic micro push rod can push away surrounding tissues and is matched with the multi-layer annular gradient magnetic field generator at the tail end to achieve large-angle flexible rotation of the joint. The multi-dimensional precise positioning of the ablation needle assembly in the space is achieved, it is ensured that the ablation electrode can be precisely aligned with a tiny focus or a focus in a special position, the flexibility and precision of operation are greatly improved, damage to surrounding normal tissue is effectively avoided, the operation safety is improved, and the ablation success rate of the focus is increased.

The invention discloses a maxillary obturator made of a novel material, and relates to the technical field of oral treatment maxillary obturations.The maxillary obturator comprises an obturator base body, the upper surface of the obturator base body is fixedly connected with a reinforcing layer for conducting auxiliary reinforcing on the obturator base body, and the upper surface of the reinforcing layer is fixedly connected with a medical soft silica gel layer; the auxiliary deformation structure abuts against the medical soft silica gel layer through an electroactive polymer arranged in the reinforcing layer. According to the maxillary obturator made of the novel material, the interior of the mouth is scanned through the digital repairing technology, scanned data are collected, a prosthesis can be accurately and rapidly designed, the prosthesis can be accurately and rapidly manufactured through the digital machining and manufacturing technology, and the practicability is high. The medical soft silica gel layer correspondingly deforms and is tightly attached to the upper jaw through the migration volume change of ions in the polymer, so that the change of the internal pressure of the oral cavity is further reduced when the patient swallows and speaks, and the phenomenon of unstable attachment of the plate body is avoided.

The present invention belongs to the field of air suspension blowers, and particularly relates to an automatic centering bearing chamber for the rotating shaft of an air suspension blower and its usage method; this device includes: a limit flange, a flat foil, a corrugated foil, an insulating plate, a washer, a bearing chamber body, a displacement sensor, a power-on wire, and a controller. The washer includes an electroactive polymer, the washer is attached to the inner wall of the bearing chamber body, the insulating plate is arranged between the electroactive polymers, one end of the power-on wire is connected to the electroactive polymer, and the other end is connected to the controller. The corrugated foil is attached to the inner wall of the electroactive polymer, the flat foil is attached to the inner wall of the corrugated foil, the limit flange is fixedly connected to the front end face of the bearing chamber body, and the displacement sensor is installed in the sensor installation hole and is in signal connection with the controller; compared with the prior art, the present invention has the advantage that the rotating shaft can be automatically centered when the air suspension blower is working.

A first flow distribution device, to be disposed in a body or a stem of a showerhead of a substrate processing system, includes: a pair of electrodes; and an intermediate layer disposed between the pair of electrodes and comprising an electroactive polymer that changes state based on a voltage applied to the pair of electrodes. The pair of electrodes and the intermediate layer are collectively implemented as a baffle plate affecting flow of a substance through the showerhead.

The present application relates to a kind of adjustable blade type water turbine upper crown leak stop device, including multiple flexible blade type leak stop mechanism, flexible blade type leak stop mechanism includes flexible blade and adjustable electroactive polymer layer, flexible blade is set in runner upper crown gap and runner upper crown outlet position, the inside of flexible blade is provided with adjustable electroactive polymer layer, flexible blade type leak stop mechanism is provided with wireless flow sensor between, the power line of wireless flow sensor and adjustable electroactive polymer layer is connected servo voltage stabilizer feeder respectively, servo voltage stabilizer feeder is connected with lower computer, lower computer and wireless flow sensor are all connected with internet of things intelligent controller communication.This application sets up adjustable electroactive polymer layer, which can adjust posture through servo voltage stabilizer feeder, when water flow enters gap cavity from runner around along upper crown gap, flexible blade provides centrifugal force for water, under the action of centrifugal force, water in upper crown cavity is discharged to achieve leak stop effect.

A test device for monitoring sterilization using a steam sterilant in a chamber is provided. The test device includes a test stack. The test stack includes an entrance layer including an entrance hole. The test stack further includes a sensor layer spaced apart from the entrance layer. The sensor layer includes a pair of electrodes disposed on the sensor layer. The test stack further includes a sensor coating disposed on a portion of the sensor layer and including an electrically active polymer. The test stack further includes a channel layer disposed between the entrance layer and the sensor layer. The channel layer includes an internal channel. The internal channel is configured to allow a flow of steam sterilant from the entrance hole to the sensor coating.

To provide a system and method for manufacturing affordable carbon fiber insulation as an alternative to glass fiber insulation to improve energy efficiency in a building environment.SOLUTION: An embodiment disclosed herein relate to a system and a method for processing coal. A direct air capture system includes a voltage source and a coal-derived electroactive polymer electrically connected to the voltage source, in which applying voltage to the coal-derived electroactive polymer causes carbon dioxide to bind to the coal-derived electroactive polymer. The method for capturing carbon dioxide includes introducing the electroactive polymer into a gas stream containing carbon dioxide, applying voltage to the electroactive polymer to bind the carbon dioxide to the electroactive polymer, and reversing the polarity of the voltage applied to the electroactive polymer to release the carbon dioxide.SELECTED DRAWING: Figure 1

A Dielectric Elastomer Actuator has first and second DEA electrodes coupled to electroactive polymer at least one of the DEA electrodes includes a plurality of boundary electrodes configured to detect a localised change in resistivity on the at least one DEA electrode, or detect a localised change in capacitance between the DEA electrodes.

Electroactive polymers having redox activatable moieties pendant from a polymeric backbone, and compositions of the electroactive polymers are disclosed. The polymers are useful in membranes for electrochemical cells, and for facilitation of electrolytically-based carbon dioxide enrichment.

This utility model discloses an OLED substrate encapsulation assembly, comprising: a substrate, a display functional layer fixedly connected to the top of the substrate, and a cover plate snapped onto the top of the substrate; and a stabilizing assembly, the stabilizing assembly including a frame adhesive, the frame adhesive being fixedly connected to the outer sides of both sides of the display functional layer. This utility model improves the adhesion between the frame adhesive and the substrate by utilizing the strong adhesion between the silicon oxynitride layer and the frame adhesive material, thereby improving the encapsulation efficiency of the frame adhesive. Simultaneously, the combination of slots and blocks enhances stability during the assembly of the substrate and the cover plate, preventing detachment and cracking. The frame adhesive further enhances the stability of the overall device assembly process. Furthermore, the electroactive polymer layer can deform under the influence of an electric field. During encapsulation, by controlling the electric field applied to the electroactive polymer layer, the electroactive polymer layer can use mechanical pressure to expel residual gas from the encapsulation cavity between the display functional layer and the cover plate.

In some embodiments, the present invention is directed to an actuator which includes at least the following: a pre-stretched electro-active polymer film being pre-stretched in a single or biaxial planar directions; at least one first semi-stiff conductor attached to a first surface of the pre-stretched electro-active polymer film, wherein the first surface is parallel to the single or biaxial planar stretch directions; at least one second semi-stiff conductor attached to a second surface of the pre-stretched electro-active polymer film, wherein the second surface is opposite to the first surface; where the semi-stiff conductors are configured to: fix the pre-stretched electro-active polymer film in a pre-stretched state and allow the pre-stretched electro-active polymer film to expand; a pair of mechanical connectors coupled to each end of an active region of the pre-stretched electro-active polymer film.

A test device for monitoring sterilization using a steam sterilant in a chamber is provided. The test device includes a test stack. The test stack includes an entrance layer including an entrance hole. The test stack further includes a sensor layer spaced apart from the entrance layer. The sensor layer includes at least one pair of electrodes disposed on the sensor layer. The test stack further includes at least one sensor coating disposed on at least one portion of the sensor layer and including an electrically active polymer. The test stack further includes an intermediate layer disposed between the entrance layer and the sensor layer. The intermediate layer is disposed in fluidically connects the entrance hole and the at least one sensor coating. The intermediate layer is configured to allow a flow of the steam sterilant received from the entrance hole to the at least one sensor coating.

Performance requirements of electroactive polymer materials used for transducer devices include dielectric breakdown strength, Young's modulus, dielectric constant, thickness, and electromechanical instability. There are correlation relationships therebetween but definitions of the correlation relationships have not been achieved. Therefore, it is necessary to search for an excellent material by trial and error, which requires a great deal of work. Disclosed herein is a curable elastomer composition that includes a compound having a high dielectric functional group. A cured product of the composition satisfies the following formula:E=α⁡(Yε0⁢εr)0.5where E is the dielectric breakdown strength in the range of 50 V / μm to 200 V / μm, α is a constant in the range of 0.4 to 0.9, Y is Young's modulus and is in the range of 0.001 MPa to 10 MPa, εγ is a specific dielectric constant and is 100 or less, and ε0 represents the dielectric constant of vacuum.

The invention relates to a detection device comprising: a flexible substrate (20) comprising a first surface (30) and a second surface opposite the first surface; a plurality of transducers (21, 22) attached to the substrate; and a plurality of electrical tracks (23, 24) extending over the substrate. Each transducer has: an electroactive polymer film (50); and a first and a second electrode (54) that are stacked on either side of the film. Each of the first and second electrodes of the corresponding transducer (21, 22) has a conductive layer in contact respectively with a first face and a second face (66) of the film.

The invention relates to the technical field of heat energy engineering, and discloses a centrifugal negative pressure heat dissipation control method which comprises the following steps: initializing a centrifugal heat dissipation system, and configuring a vortex generator, a self-adaptive porous medium shunting layer, a sound wave generator, an airflow deflection memory matrix, a pressure sensor and a temperature sensor, initial parameters are set, and the negative pressure gradient and the heat source temperature are collected; when the temperature of the heat source exceeds a threshold value, the vortex generator is driven to generate micro-scale vortexes through vaporization of the low-boiling-point phase change medium; adjusting the pore opening and closing proportion of the porous medium shunting layer through the thermosensitive shape memory alloy, and guiding eddy current to a high-heat area; the curvature of the inner wall of the air duct is adjusted through the electroactive polymer unit, an eddy current path is optimized, and the curvature state is recorded; through negative pressure gradient and temperature feedback, parameters of each assembly are dynamically adjusted, and closed-loop regulation and control of heat flow acoustoelectric multi-physics field coupling are achieved. Through cooperation of multiple physical fields, negative pressure field distribution is optimized, and the heat dissipation requirement of a high-heat-density scene is met.

The invention provides an active pneumatic control system based on an electroactive polymer fiber array and a miniature flight detection device, belongs to the technical field of miniature robots and intelligent materials, and aims to solve the problem that a passive wind power aircraft cannot be actively controlled. The control system comprises a fiber array composed of a plurality of independent EAP flexible fibers, and a control module capable of applying accurate electric signals to specified fibers. The electric signals drive the fibers to generate reversible deformation, so that the collective pneumatic form of the fiber array is changed. The detection device mainly comprises a detector main body, a fiber system and an attitude control system. The fiber system is composed of a fiber array and is unfolded in a natural state to form a windward sail face providing pneumatic elasticity. The attitude control system symmetrically or asymmetrically drives the fiber array through a control module, changes the three-dimensional configuration of the sail surface, adjusts the aerodynamic characteristics in real time, and achieves the precise control of the flight height and direction. The passive aircraft is suitable for a deep space exploration environment.

An actuator mechanism having body, at least one actuator made of an electro-active polymer material which changes form depending on the electrical energy so that it triggers the body, at least two reinforcers which allow the actuator to change form are positioned on the actuator such that they remain opposite to each other and are connected to the actuator by clamping, thus transmitting movement to the body.

A pressure regulator that is used for various fluids is described. The regulator can be an integral part of a tank containing pressured fluid or a standalone device. The regulator uses an electroactive polymer (EAP) that can both increase and reduce its volume when exposed to a weak electrical pulse. The EAP through its change of volume controls the pressure of the fluid that is released from the fluid tank to a required pressure to be used for different applications. The control of the EAP is carried out by a pressure sensor and a controller. The controller uses the real time pressure data measured by the pressure sensor and adjusts the pressure of the fluid through the control of EAP.

The present application illustrates an electroactive polymer (EAR)-based device (10, 20) comprising: a dielectric layer (13, 23) arranged between two electrode layers (12, 14), the dielectric layer (13, 24) consisting of a stretchable material, the two electrode layers (12, 14) comprising a carbon-based electrically conductive material forming the stretchable layer and a solid oxidant material, the EAP-based device further comprises an additional dielectric layer (11, 15) of the stretchable material arranged on each of the two electrode layers (11, 13) and configured with the dielectric layers (13, 23) to seal each of the two electrode layers (12, 14) therein.

A soft haptic device and a local control method are disclosed. The soft haptic device includes a soft actuator. The soft actuator includes an electroactive polymer film, a patterned electrode, and a dielectric liquid injected between the electroactive polymer film and the patterned electrode. The soft actuator generates a reconfigurable shape such that a form of an output shape and a number of outputtable shapes are changed depending on the number of electrodes constituting the patterned electrode, a shape of the electrodes, and an arrangement of the electrodes.

The utility model discloses a kind of pumpless electric drive liquid cooling battery box devices, including integrally die-casting box, its inside is divided into battery cabin and cooling liquid cabin by partition, and its outer bottom is attached to set up the liquid cooling plate of inner flow channel;Inlet section and outlet section of flow channel are respectively corresponding to set up inlet flexible check valve and outlet flexible check valve, and the inner wall of flow channel between two valves is attached with electroactive polymer;Electroactive polymer is connected with alternating current power supply, generates radial periodic deformation drive cooling liquid from inlet flexible check valve to outlet flexible check valve directional flow. The utility model drives traditional pump by electroactive polymer deformation drive belt, and set up flexible check valve to prevent backflow, effectively reduce the power consumption of battery box liquid cooling system.

Spring support (14) for a suspension element of a motor vehicle (2), wherein the spring support (14) - an electroactive polymer and - has a piezoactive element (22).

The present invention discloses a method for long-term stabilization of MXene aqueous dispersion using a three-dimensional particle electrode strategy. The method comprises mixing π-conjugated monomers into the MXene aqueous dispersion and constructing a three-dimensional particle electrode system with suitable anode and cathode materials; treating the MXene nanosheets dispersed in water as particle electrodes and the π-conjugated monomers as pollutants; electrocatalytically oxidizing the π-conjugated monomers under suitable treatment process parameters; and in-situ depositing corresponding electroactive polymers on the surface and edge of the particle electrode (MXene sheet) to fully seal oxidation-sensitive sites and achieve long-term stabilization of the MXene aqueous dispersion. Even if interlayer water and oxygen are present during the process of preparing the film by vacuum filtration, the coated electroactive polymer can effectively protect the accumulated MXene nanosheets. While stabilizing MXene, the coated electroactive polymer also retains the charged properties of the nanosheets to the greatest extent possible, with little impact on subsequent practical applications.

The invention provides an intelligent pressure sock capable of detecting a pressure value, and relates to the technical field of pressure socks, the intelligent pressure sock comprises an intelligent pressure sock, the intelligent pressure sock carries a detection system, the intelligent pressure sock comprises an outer layer, a middle layer and an inner layer which are arranged in sequence, the outer layer, the middle layer and the inner layer are connected through a sewing method, the outer layer is an antibacterial nylon layer, and the middle layer is an antibacterial nylon layer. The middle layer is a medical-grade elastic fiber layer, the inner layer is a moisture-absorbing breathable fabric layer, a plurality of groups of flexible piezoresistive sensor sub-modules are arranged in the outer layer, a plurality of groups of electroactive polymer pressure sub-modules are arranged on the intelligent pressure sock, and the electroactive polymer pressure sub-modules are arranged on the outer layer. The intelligent pressure sock is further provided with a microcontroller module and a flexible battery sub-module. By combining the sensor and the microcontroller and introducing the machine learning model, the pressure change and the motion state of the user can be monitored in real time, the pressure is dynamically adjusted according to different activity requirements, the optimal pressure support is ensured, and the ulcer treatment effect is optimized.

Detection Device with Electroactive Transducers and Associated Detection Assembly. The invention relates to a detection device comprising: a flexible substrate (20) having first (30) and second opposing surfaces; a plurality of transducers (21, 22) fixed to the substrate; and a plurality of electrical tracks (23, 24) extending over the substrate. Each transducer comprises: a film (50) of electroactive polymer; and first and second electrodes (54) stacked on either side of said film. Each of the first and second electrodes of the corresponding transducer (21, 22) has a conductive layer in contact with a first and second face (66) of said film, respectively. Figure for the abstract: Figure 3

Membrane actuator (10) comprising a first frame part (12) and a second frame part (14), between which at least two membrane layers (16) are stacked and designed as electroactive polymer layers, wherein the first frame part (12) abuts a first surface (17a) of the at least two membrane layers (16) and the second frame part (14) abuts a second surface (17b) of the at least two membrane layers (16) opposite the first surface (17a), such that the membrane layers (16) are clamped in a single frame comprising both frame parts (12, 14), wherein the at least two membrane layers (16) each have at least one electrode (20, 22) and the electrodes (20, 22) of directly adjacent membrane layers (16) are arranged offset from each other.

The invention discloses a multi-modal perception blind person shopping guide method, and relates to the technical field of blind person shopping guide, and the method comprises the steps: carrying out the optimization of touch coding parameters according to the multi-modal touch perception characteristics of a user, and generating a personalized touch coding scheme of the user; mapping an array of electroactive polymer haptic cells into a dynamic touchpad based on the haptic coding scheme and environmental information within the target area; obtaining user interaction data, dynamically adjusting the complexity of the touch coding scheme, and updating the dynamic touch pad; and according to the spatial audio technology and the updated dynamic touchpad, guiding the user to a position corresponding to the target goods to complete shopping. According to the method, the unique tactile perception ability of each user is fully considered, excessive information is prevented from being transmitted in a complex environment, the user can receive and understand the tactile information more easily, the user can gradually adapt to the complex tactile information in the using process through a dynamic adjustment mechanism, and adaptability and practicability are improved.