116 results about "Magnetic films" patented technology

The invention discloses a flexible magnetic tactile sensing device based on a microstructure elastic layer, a three-dimensional force measuring device and a measuring method.The flexible magnetic tactile sensing device comprises a flexible magnetic film, the microstructure elastic layer, a Hall sensor, a PCB and a bottom shell, the Hall sensor is installed on the PCB, and the flexible magnetic film, the microstructure elastic layer, the PCB and the bottom shell are sequentially stacked from top to bottom; the microstructure elastic layer is of a non-planar structure, when the flexible magnetic film deforms due to stress, deformation of the flexible magnetic film is transmitted to the microstructure elastic layer, the change of the three-axis magnetic field intensity is measured through the Hall sensor and uploaded to a PC terminal for data processing, and three-dimensional force measurement is achieved. Three-dimensional force measurement can be achieved, the flexible magnetic film can generate local deformation in the normal direction when normal force is applied, the flexible magnetic film can generate tangential displacement when tangential force is applied, and application scenes suitable for different microstructure elastic layers are provided according to quantitative analysis results.

The invention provides a resin composition, a magnetic film and application thereof. The resin composition comprises the following components: (A) magnetic filler, (B) epoxy resin, (C) a curing agent, (D) a flexibilizer and (E) polyester polyol, the number average molecular weight of the (E) polyester polyol is 2000 to 3000. According to the resin composition provided by the invention, through screening and synergistic compounding of specific components, the resin composition has relatively high magnetic conductivity and relatively low magnetic loss under high frequency after being cured, and meanwhile, the binding force with a copper layer is relatively high.

The application discloses a flexible multi-dimensional force sensor based on a centripetal gradient magnetic field design and a preparation method thereof, and belongs to the field of electronic devices. The flexible multi-dimensional force sensor comprises, from top to bottom, a protective layer, a magnetic film layer, a buffer layer and a transmission layer. The protective layer comprises a flexible base material with force-sensitive characteristics. The magnetic film layer is provided with a cross-shaped groove on the bottom surface, and the edges of the groove are arc-shaped, so that a magnetic field with a gradient magnetic flux can be formed. The buffer layer comprises a strain material with a stepped shape. The transmission layer comprises an electromagnetic effect chip with three-axis magnetic field sensing capability and a readout circuit thereof. Compared with the prior art, the sensor of the application realizes natural decoupling from the magnetic field design, and has decoupling capability on three axes. The gradient design of the application enables the sensor to have different response slopes at different stress stages when subjected to stress, greatly improves the force measurement range of the device, and the sensing sensitivity and range on the three axes are the same.

The invention discloses a visual tactile sensor based on a magnetic imaging principle. The visual tactile sensor comprises a shell, an image acquisition module, a magnetic pole display film, an elastic body and a magnetic film, the magnetic pole display film, the elastic body and the magnetic thin film are arranged in the shell from top to bottom, and the image acquisition module is located above the magnetic pole display film and used for acquiring an image of the magnetic pole display film; when the sensor is used for pressure sensing, the position with the maximum gray level variation of the magnetic pole display film image is the pressure acting position, and the pressure is equal to the result that the gray level variation of the magnetic pole display film image is divided by the magneto-optical conversion coefficient of the magnetic pole display film and the product thereof. The magnetic induction intensity in the center range of the surface of the magnetic film, the initial distance between the magnetic film and the magnetic pole display film and the equivalent elastic coefficient of the magnetic film and the elastic body are related. The sensor converts a mechanical signal into a magnetic field signal and then converts the magnetic field signal into an optical image, high-sensitivity sensing of tiny pressure is achieved, and meanwhile the sensor has the higher signal-to-noise ratio, stability and anti-interference capacity.

The invention discloses a visual tactile sensor, an electronic skin and a robot, relates to the field of sensors, and is used for improving the comprehensiveness and sensitivity of stress detection. The sensor comprises a magnetic film covering the top surface and the side surface, and the magnetic film is prepared by mixing magnetic powder and silicone rubber; the support supports the magnetic thin film, a magnetic display card and a light source are arranged in the support, the visual touch collector collects magnetic induction data and development data of stress of the magnetic thin film, and then the multi-mode pressure detection model analyzes the stress position and / or the stress size. The stress detection sensitivity is high, comprehensive detection of the top face and the side faces can be achieved, and the detection precision is high.

The invention relates to a high-toughness anti-crack magnetic decorative film and a preparation method thereof. The decorative film is prepared from the following raw materials in parts by weight: 40 to 60 parts of poly (dihydrothiophene-vinyl ether) copolymer, 10 to 25 parts of shell layer self-assembly modified Fe3O4 nanosheets, 5 to 15 parts of polyether ester block elastomer, 0.5 to 2 parts of sodium dodecyl benzene sulfonate, 0.5 to 1.5 parts of fluorosilane coupling agent, 0.1 to 1.0 part of 2-hydroxybenzotriazole ultraviolet absorbent, 3 to 6 parts of bisphenol A type epoxy curing agent and 0.05 to 0.5 part of imidazole catalyst. The flexible copolymer is synthesized through copolymerization of dihydrothiophene and vinyl ether, the modified Fe3O4 nanosheets form a Fe3O4 structure through coprecipitation of ferric chloride and ferrous chloride and regulation and control of ammonia water, and shell self-assembly coating is carried out through tetraethoxysilane and a block micromolecule interface agent. The material has excellent tensile strength, elongation at break, magnetic adsorption force and cycling stability, and is suitable for the application fields of flexible magnetic films and high-adhesion decorations.

The invention provides a magnetic resin composition, a magnetic film and application thereof. The magnetic resin composition comprises (A) a magnetic filler, (B) epoxy resin, (C) a curing agent and (D) a flexibilizer, the magnetic filler (A) comprises carbonyl iron powder (A1), FeSiCr alloy (A2) and iron-based nanocrystals (A3); based on the total mass of the magnetic resin composition as 100%, the content of the (A) magnetic filler is 85% or more; based on 100% of the total mass of the magnetic filler (A), the content of the carbonyl iron powder (A1) is 55%-65%, the content of the FeSiCr alloy (A2) is 15%-25%, and the content of the iron-based nanocrystalline (A3) is 15%-25%. According to the magnetic resin composition and the preparation method thereof, specific types of magnetic fillers are introduced and compounded according to a specific content, so that the magnetic resin composition has relatively high magnetic conductivity and relatively low magnetic loss after being cured, and meanwhile, the binding force with a copper layer is relatively high.

The invention provides a tactile sensor and a calibration method of the tactile sensor, and belongs to the technical field of sensors, the tactile sensor comprises a magnetic sensing layer, a pressure sensing layer and a flexible stress layer which are stacked in sequence; a magnetic film made of a magnetic material is embedded in the flexible stress layer, and after the flexible stress layer is subjected to three-dimensional force, the position of the magnetic film is changed; the pressure sensing layer is used for measuring a normal force of a three-dimensional force; and the magnetic sensing layer is used for detecting and acquiring magnetic field data of the magnetic film at different positions before and after the magnetic film is stressed so as to solve a three-dimensional force. According to the touch sensor provided by the invention, after the flexible stress layer is stressed, the pressure is transmitted to the pressure sensing layer through deformation, so that normal force detection is realized; meanwhile, according to the magnetic field change of the magnetic sensor before and after the flexible stress layer is stressed, the displacement change of the magnetic film is calculated, and finally the three-dimensional force is generated through decoupling.

The invention belongs to the technical field of magnetic field sensing, and discloses a silicon-based anisotropic magnetic film non-contact magnetic field sensing device which comprises an organic glass probe, a rotating table, a steering engine, a support, a solar panel, a rear-end waterproof box and a fixed base which are sequentially combined from top to bottom. Magnetic field components at different angles are obtained through the variable attitude angle scanning mechanism, so that the optimal sensing angle is selected, measurement errors caused by installation attitude deviation, structural tolerance and environmental disturbance can be effectively eliminated, the reliability and stability of the system in outdoor long-term operation are remarkably improved, and the reliability and stability of the system in outdoor long-term operation are improved. The magnetic field of the wire is sensed in a non-contact mode, the light-weight probe and the movable fixing support are matched, fixation can be directly carried out below the measured wire, the installation process is simple, convenient and rapid, and the device is very suitable for the rapid arrangement and temporary monitoring requirements of an electric power field.

To provide an aluminum alloy sheet for a magnetic disk, an aluminum alloy sheet blank for the magnetic disk, and an aluminum alloy sheet substrate for the magnetic disk, having satisfactory rigidity and capable of suppressing thermal deformation during magnetic film sputtering.SOLUTION: An aluminum alloy sheet for a magnetic disk, comprising: 0.1 to 7.0 mass% of Mg; 0.005 to 1.0 mass% of Cr; 3 to 100 mass ppm of Be; 0.20 mass% or less of Si; 0.05 to 5.9 mass% of at least one or more of Fe, Mn, and Ni in total; and a balance of Al and impurities.SELECTED DRAWING: None

The application discloses a visual tactile sensor, an electronic skin and a robot, relates to the field of sensors, and aims to improve the comprehensiveness and sensitivity of force detection. The sensor comprises a magnetic film covering the top surface and the side surface, which is made of mixed magnetic powder and silicone rubber; a support supports the magnetic film, a magnetic display card and a light source are arranged in the support, the magnetic sensing data and the display data of the magnetic film under force are collected by a visual tactile collector, and a multi-modal pressure detection model is used for analyzing the force position and / or the force size. The application has high force detection sensitivity, can realize comprehensive detection of the top surface and the side surface, and has high detection precision.

The application discloses a four-stage paddle thrombus-removing micro robot, a preparation method and a magnetic field driving thrombus-removing micro robot system, relates to the technical field of micro robots, and comprises a conical drill bit, a main straight rod and a four-stage paddle group, wherein the conical drill bit is made of a biodegradable material; the bottom of the conical drill bit is connected with the main straight rod; the main straight rod is internally provided with a thrombolytic drug; the four-stage paddle group is arranged on the outer circumferential surface of the main straight rod in an axial direction; the paddle group comprises three paddle blades which are centrally symmetrical to the axis of the main straight rod; the paddle blades in the adjacent two-stage paddle groups are arranged in a staggered manner; the paddle blades are of a round head structure; the thickness of the paddle blades gradually increases from outside to inside; and the surface of the micro robot is coated with a magnetic film and is subjected to directional magnetization treatment. The application can obtain strong movement ability and stable movement state under the accurate control of a movement system, realizes intravascular drilling and crushing of a thrombus, and can biodegrade and release the thrombolytic drug after surgery, so as to solve the problem of downstream vascular embolism after drilling.

The present application relates to a kind of orientation method of two-way plate fiber using magnetic film material, mainly a kind of two-way plate fiber control method using magnetic film material applied to maintenance formwork concrete curing forming device, including the magnetic adsorption layer of soft magnetic material such as magnetic film material / silicon steel sheet, curing formwork, power supply, magnetization generator and the like composition of curing forming device.The curing forming device passes through " magnetic film " structure, on the one hand, vertical fiber is turned over during insertion process, on the other hand, when power is connected, magnetization generator generates magnetism, so that magnetic film adsorption layer obtains magnetism, and then the part of steel fiber in mixed slurry is acted, the uniformity of steel fiber dispersion in construction process is improved, the consistency of orientation.The device is simple, the scope of application is wide, the operation method is easy to operate, and it can be reused, the method can improve the mechanical properties of UHPC, innovate UHPC construction technology, and has great promoting significance for large-scale promotion and application of UHPC.

The present application belongs to the field of magnetic functional materials and components, and relates to high-frequency electromagnetic interference suppression technology, in particular to an integrated thin film noise suppressor. The present application divides the magnetic thin film into layers, integrates multiple layers of soft magnetic thin film on the transmission line through the isolation of the insulating layer, realizes the suppression of noise through the magnetic loss of the soft magnetic thin film, and can form an integrated thin film noise suppressor with single frequency point or multiple frequency points in the frequency range of 0-6GHz. The present application provides an optional scheme for further satisfying wideband electromagnetic noise suppression by adjusting the type or thickness of the magnetic film material according to actual needs. The present application has the advantages of simple structure and process, integrability, high performance, wide frequency band and high applicability.

The invention belongs to the technical field of biomedical instruments, and particularly relates to a flexible magnetic modified wearable piezoelectric repair tooth socket. Comprising a flexible carrier and a functional composite layer, the flexible carrier serves as a substrate, and the functional composite layer is arranged on the flexible carrier; the functional composite layer comprises a first PU packaging layer, a first magnetic film modification layer, a piezoelectric functional layer, a second magnetic film modification layer and a second PU packaging layer which are sequentially arranged from top to bottom. According to the piezoelectric functional layer, parameters such as the occlusion pressure range, the flexible structure design and the action area can be comprehensively adjusted according to the actual application scene, the target output voltage value is achieved, and personalized customization is supported. And by introducing the magnetic film mutual exclusion layer, the stability of the piezoelectric device is improved.

A soft magnetic resin composition includes a solid content containing flat soft magnetic particles and a resin component, and a dispersion medium. Furthermore, a viscosity (A) at a shear rate of 38.1 s-1 is 300 mPa·s or more. Furthermore, a ratio (A / C) of the viscosity (A) at a shear rate of 38.1 s-1 with respect to a viscosity (C) at a shear rate of 191.5 s-1 is 1.7 or more.

The invention discloses a gallium oxide-based transverse FinFET (FinFET) device with high electron mobility, which mainly solves the problems of small channel mobility and large on-resistance and thermal resistance effects of the existing similar devices. The device comprises a substrate (1), a barrier layer (2) and a channel layer (3) from bottom to top, the channel layer (3) adopts a Fin structure, a source electrode (4) and a drain electrode (5) are respectively arranged at two ends of the channel layer (3), and a gate dielectric layer (6) and a gate electrode (8) are arranged between the source electrode and the drain electrode; a magnetic thin film layer (7) is arranged on the gate dielectric layer corresponding to the groove between the Fin channel layers and is used for providing magnetic field force in a channel and applying Lorentz force from bottom to top to moving electrons, so that the channel electrons perform directional movement under the synergistic effect of the Lorentz force and the electric field force, the probability of electron collision and scattering is reduced, and the performance of the device is improved. And the carrier mobility of the device is improved. Under the condition that the process complexity is not increased, the on resistance and the thermal resistance effect of the device can be effectively reduced, and the device can be used as a power electronic device.

The application provides a super-clean corrugated pipe pump cavity health state monitoring method and system, comprising the following steps: S1: a marking step, a magnetic film is pasted at a preset position of the corrugated pipe as a magnetic film marking point; S2: a magnetic flux density value acquisition step, when the corrugated pipe is in a compressed state, a magnetic flux density signal generated by excitation of the magnetic film is synchronously collected through a magnetic sensor, and the magnetic flux density signal is processed to obtain a magnetic flux density value; S3: a strain prediction value acquisition step, the magnetic flux density value is taken as input, and a trained LSTM neural network prediction model is processed to output a corresponding strain prediction value; and S4: a health state judgment step, the strain prediction value is compared with a preset strain threshold value to judge the current health state of the corrugated pipe. Compared with the prior art, the application has the advantages of non-contact, high-precision monitoring and the like.

The invention relates to a magnetic membrane synergetic ultrafiltration system and ultrafiltration method, and the system comprises a magnetic coupling unit and a membrane separation unit; the membrane separation unit comprises a membrane material, and soft magnetic composite particles are embedded in the membrane material; the magnetic coupling unit comprises a first magnetic field device and a second magnetic field device, the first magnetic field device is arranged adjacent to the water inlet end of the membrane separation unit, and the second magnetic field device is arranged adjacent to the backwashing end of the membrane separation unit. The device has the beneficial effects that the membrane material embedded with the soft magnetic composite particles and the magnetic coupling units separately arranged at the water inlet end and the backwashing end have a synergistic effect, so that precise control and efficient cleaning of the membrane pollution process are realized.

The application discloses a low-noise high-sensitivity micro planar laminated magnetic induction type magnetic sensor, which comprises, from bottom to top, an insulating base, a bottom magnetic film, a combined coil and a top magnetic film; insulating isolation layers are arranged between the combined coil and the bottom magnetic film and the top magnetic film; the bottom magnetic film and the top magnetic film are rectangular planar magnetic films or surface strip grid pattern magnetic films; at least one of the bottom magnetic film and the top magnetic film is a surface strip grid pattern magnetic film; and the combined coil is a double helix coil structure, comprising alternating excitation coils and induction coils. The application not only weakens the demagnetization effect of the surface strip grid pattern magnetic film in the length direction, enhances the effective permeability of the surface strip grid pattern magnetic film in the length direction, but also suppresses eddy current noise, so that low-noise high-sensitivity magnetic field detection is realized.

The application relates to a magnetic skyrmion writing device and a forming method thereof, which comprises a magnetic film, a writing unit for writing a magnetic skyrmion to the magnetic film, and a stress providing device for providing a compressive stress or a tensile stress to the magnetic film. According to the positive or negative magnetostriction coefficient of the magnetic film, a magnetization easy axis along the tensile direction or perpendicular to the tensile direction can be generated in the film, and then the energy threshold of the nucleation of the magnetic skyrmion in the film is reduced.

An embedded inductor may include a substrate. The inductor may include a first layer of magnetic film, disposed on a first side of the substrate. The inductor may include a second layer of magnetic film, disposed on a second side of the substrate. The inductor may include a dielectric layer disposed over each of the first and second layers of magnetic film may include. The inductor may include a first redistribution layer formed over the dielectric layer. The inductor may include a second redistribution layer a formed over the dielectric layer. The inductor may include two or more through-substrate vias (TSVs) extending through the dielectric layer and the substrate from the first redistribution layer to the second redistribution layer.

A magnetic sensor head includes an optical fiber, a GI fiber having one end optically connected to the optical fiber, a magnetic film joined to the other end of the GI fiber, and a reflective film joined to a surface of the magnetic film opposite a surface joined to the GI fiber. The magnetic film is formed of a rare-earth iron garnet film. The slope of the sum of squared differences of the rare-earth iron garnet film with respect to an applied magnetic field is 100 or greater.

The application discloses a frequency selective amplitude limiter and a radio frequency device, and relates to the technical field of microwave radio frequency devices. Specifically, the frequency selective amplitude limiter comprises a planar transmission line structure, a first magnetic film and a second magnetic film. The planar transmission line structure is used for transmitting a microwave radio frequency signal and generating a microwave magnetic field. The first magnetic film covers a first surface of the planar transmission line structure. The second magnetic film covers a second surface of the planar transmission line structure, so that the planar transmission line structure is clamped between the first magnetic film and the second magnetic film. The microwave magnetic field generated by the planar transmission line structure is coupled to the first magnetic film and the second magnetic film at the same time. The first surface and the second surface of the planar transmission line structure are covered by the first magnetic film and the second magnetic film respectively, so that the magnetic coupling efficiency can be improved without greatly increasing the interaction length, and the frequency selective amplitude limiter also has a very low nonlinear starting threshold and a very low insertion loss.

The invention relates to the field of uniaxial strain devices, in particular to a uniaxial strain device of an integrated sensor, which comprises a fixing part, a supporting part, a color center quantum sensor, a first piezoelectric stack structure, a second piezoelectric stack structure and an external power supply, and is characterized in that voltages with opposite polarities are applied to the first piezoelectric stack structure and the second piezoelectric stack structure through the external power supply; therefore, the magnetic film to be tested on the color center quantum sensor can be stretched or compressed. When the device stretches or compresses the magnetic film to be detected, the magnetic field generated by the magnetic film to be detected changes, the stress change corresponding to the process can be quantitatively revealed through the optical detection magnetic resonance energy spectrum of the color center quantum sensor, and the magnetic field of the magnetic film is coupled to the color center quantum sensor. Zeeman splitting of the optical detection magnetic resonance energy spectrum is caused, so that quantitative in-situ measurement of the property change of the to-be-detected magnetic film is realized, and the quantitative relation of the magnetism of the magnetic film along with the stress can be revealed.

The application provides a large-area split-type flexible magnetic tactile sensor with a sensing function, which adopts a plurality of flexible square magnetic sheets magnetized in a thickness direction and arranged in a chessboard array mode with opposite polarities of adjacent flexible square magnetic sheets to simulate a flexible magnetic film magnetized in a folding mode, the magnetic flux density of a contact force collection area is enhanced, a U-net algorithm is used to fit the "field strength-force" relationship of the divided collection area, a contact force cloud map is generated, the Hall sensor and the flexible magnetic film can be kept at a larger distance for split-type large-area contact force sensing, and lossless split-type installation is realized; compared with a simple magnetic field mode such as one-way magnetization, the tactile sensor has higher sensitivity. According to the size of a required contact force measurement surface, more flexible magnetic tactile sensor arrays are arranged, a plurality of units jointly draw a contact force cloud map, and the application has application potential in the fields of bionic robots, flexible electronics, medical treatment and the like.

The application discloses an iron-based molecular magnetic storage and memory integrated device and belongs to the technical field of semiconductor storage. The device comprises a substrate layer, an FeB molecular magnetic film, a solid-state read-write control layer and a packaging layer. FeB is a unique magnetic phase (atomic ratio 1:1, no impurity phase), and a doping element is connected with FeB units in a molecular bridge to form a molecular-level continuous structure without grains and photolithography. The molar ratio of Fe / B is 85-97% / 3-15%, and the process parameter range is disclosed. The application discloses discarding charge storage, reading and writing data through FeB molecular magnetic moment flip, adapting to three scenes of HDD, SSD and non-volatile memory, having the advantages of low cost, long service life, no data loss after power failure, photolithography exemption and secret storage of core accurate parameters.

The application discloses a kind of high-power radio frequency magnetron sputtering patterning preparation CoTaZr film and high-frequency performance regulation process, belongs to soft magnetic film preparation technical field.The application is with high-power radio frequency magnetron sputtering as core deposition process, stripe pattern is as characteristic regulation means, and the composition ratio of preparation patterned CoTaZr amorphous soft magnetic film is Co:89 at.%;Ta:5 at.%;Zr:6 at.% on Si (111) substrate;By 140W high sputtering power optimization film intrinsic structure and morphology, in combination with the mask plate induced shape anisotropy that stripe spacing is fixed at 50 μm, width 30 μm~70 μm, realize the synergic regulation of film high-frequency performance, surface morphology and resistivity.The application is carried out at room temperature, and compatible with standard CMOS process, the film cutoff frequency is continuously regulated at 2.19~3.06 GHz, saturation magnetization is stable at 12000~12500 Gs, initial permeability is 191~371 adjustable, surface roughness is 0.401~1.284 nm, resistivity keeps low loss characteristics, solve the problem that film morphology, resistivity and high-frequency performance are difficult to take into account in traditional process, can meet the application demand of GHz frequency band on-chip integrated inductor, 5G communication module and other high-frequency devices on magnetic core material.

The invention discloses a method for regulating and controlling the perpendicular magnetic anisotropy and the magnetic ion effect of a magnetic film through neon ion implantation. Belongs to the technical field of magnetic material preparation and optimization. The inert neon ions are selected to carry out irradiation pretreatment on the magnetic thin film, so that the vertical magnetic anisotropy of the thin film is remarkably enhanced, and a solid foundation is laid for manufacturing a high-stability and high-density storage unit. Besides, the film pretreated by neon ions successfully induces a multi-stage and reversible magnetic ion effect: oxygen ions (O < 2->) can be driven to controllably migrate in the film by applying a specific grid voltage, so that efficient and reversible switching of magnetic anisotropy between an in-plane (IMA) state and a vertical (PMA) state is realized, the response speed is high, and the magnetic anisotropy is high in performance. And a brand new implementation way is provided for the design of low-power-consumption nonvolatile magnetic memories and logic devices.

The invention discloses a modular panel based on a composite magnetic thin film, which belongs to the technical field of decorative panels and comprises a base layer, a first bonding layer, a magnetic functional layer, a second bonding layer and a surface layer which are sequentially arranged from bottom to top, the base layer and the magnetic attraction function layer are fixed through a first bonding layer, and the magnetic attraction function layer and the surface layer are fixed through a second bonding layer; the magnetic attraction functional layer comprises a base material and soft magnetic powder, and the magnetic attraction functional layer is a sheet-shaped continuous magnetic composite material film; and the soft magnetic powder is subjected to high-temperature passivation treatment. Through systematic innovation of the continuous soft magnetic functional layer, the integrated composite structure and process adaptation, the core problems that an existing magnetic panel is poor in flatness, uneven in magnetic force distribution, low in production efficiency, insufficient in reliability and single in adaptability are fundamentally solved. And the comprehensive advantages of high flatness, uniform magnetic attraction, efficient production, long acting, reliability and multi-scene adaptation are realized.