84 results about "Magnetic films" patented technology

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, 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.

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 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 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.

The invention relates to the technical field of functional glass materials and composite manufacturing, in particular to magnetic glass as well as a preparation method and application thereof. The preparation method of the magnetic glass comprises the following steps: S1, glass pretreatment; s2, sealing the bottom of the glass; s3, substrate pretreatment; s4, electrolyte preparation and electro-deposition, wherein electrolyte comprises magnetic metal salt, a complexing agent and a dispersing agent, and electro-deposition is conducted through a three-electrode system; s5, post-treatment: carrying out heat treatment and surface modification; s6, bonding a magnetic film; and S7, an MI process is carried out, wherein a texture mold is adopted, and a micro-nano imprinting technology is adopted. On the basis of combination of electro-deposition and an MI process, the magnetic glass with a large area and a uniform magnetic adsorption function is prepared, and meanwhile it is ensured that the sealing performance, the heat preservation performance and the structural strength of a door body are not affected.

The invention provides a preparation method of an electromechanical coupling micro-nano device and the electromechanical coupling micro-nano device, and is applied to the technical field of micro-nano manufacturing. The preparation method comprises the following steps: forming a device structure layer on a first side of a substrate, wherein the device structure layer comprises or is preset with a movable structure region and a fixed structure region; a patterned mask aligned with the substrate is fixed on the device structure layer, the pattern of the mask is provided with an opening, and the opening exposes the first area in the movable structure area; depositing a permanent magnet thin film on the first area through the opening of the mask, and removing the mask after deposition; forming a functional unit on a second region different from the first region in the movable structure region or in the fixed structure region, and forming an interconnection structure electrically connected with the functional unit on the fixed structure region; and partially or completely removing the substrate below the movable structure region in the device structure layer, and forming a cavity below the movable structure region to release part of the movable structure region including the first region.

This invention provides a high-permeability multilayer flexible soft magnetic film, its preparation method, and its applications. The multilayer flexible soft magnetic film is composed of alternating layers of magnetic metal layers and polymer insulating dielectric layers. Each magnetic metal layer is precisely controlled to be 200–900 nm thick, and each polymer insulating dielectric layer is controlled to be 100–500 nm thick, with the total thickness of the magnetic metal layers accounting for 30%–80%. Through this structural design, the polymer insulating dielectric layer effectively blocks interlayer eddy current paths, significantly suppressing high-frequency eddy current losses. Simultaneously, the high proportion of magnetic layers provides sufficient magnetic flux and magnetic loss contribution, avoiding insufficient magnetic performance due to excessively thick insulating layers or exacerbated eddy current losses due to excessively thick magnetic layers. Therefore, the imaginary peak value of the film's effective permeability is greater than 400, exhibiting excellent high-frequency magnetic loss, wave absorption, and noise suppression capabilities. Furthermore, the structure is stable and flexible, making it suitable for high-frequency filtering, electromagnetic compatibility, and other applications.

Spin diode device (100; 300; 500) configured to detect a microwave signal oscillating at a first target oscillation frequency or a second target oscillation frequency, the spin diode device (100; 300; 500) comprising: a magnetic tunnel contact stack (150) arranged between a lower electrode (130) and an upper electrode (140), the magnetic tunnel contact stack (150) comprising: a lower magnetic layer (102) with a lower magnetic film (312); a tunnel barrier layer (104) above the lower magnetic layer (102), wherein the tunnel barrier layer (104) comprises an insulating material; and an upper magnetic layer (106) above the tunnel barrier layer (104), wherein the upper magnetic layer (106) comprises an upper magnetic film (322); wherein each of the lower magnetic film (312) and the upper magnetic film (322) has a perpendicular magnetic anisotropy, wherein the lower magnetic film (312) comprises a first strength of perpendicular magnetic anisotropy corresponding to a first natural ferromagnetic resonance frequency, wherein the first natural ferromagnetic resonance frequency corresponds to the first target oscillation frequency, wherein the upper magnetic film (322) comprises a second strength of perpendicular magnetic anisotropy corresponding to a second natural ferromagnetic resonance frequency, wherein the second natural ferromagnetic resonance frequency corresponds to the second target oscillation frequency, where the second strength of perpendicular magnetic anisotropy differs from the first strength of perpendicular magnetic anisotropy, and where the second natural ferromagnetic resonance frequency differs from the first natural ferromagnetic resonance frequency.

The application discloses a kind of vector magnetic sensor based on acoustic wave driven ferromagnetic resonance, including processing component and two groups of interdigital transducing components, each group of interdigital transducing components includes input interdigital transducer and output interdigital transducer, and a certain space distance is arranged between input and output interdigital transducer in each group of interdigital transducing components to form delay line structure, two delay line structures are crossed same and are set at 45 ° angle, and magnetic film made of ferromagnetic material is grown in the space distance of two delay line structures, and the direction of the magnetic field sensed by two delay line structures is-45 ° with the direction of acoustic wave propagation in the delay line structure.The processing component is analyzed by collecting the electrical signal of input and output interdigital transducer in two groups of interdigital transducing components, and the size of the magnetic field measured by each delay line structure is obtained, and then the size and direction of external magnetic field are obtained by vector synthesis.The application can simultaneously detect the direction and size of external magnetic field.

This utility model discloses a tablet computer with facial recognition function, relating to the field of tablet computers. The utility model includes a tablet computer body. Functional mechanisms are arranged above and below the outer surface of the body. Through a cooperative control structure of a sliding privacy mechanism and the functional mechanisms, the privacy film moves along the pull-out groove trajectory, triggering the elastic deformation of a deformation piece. This directly drives the locking / separation action of the magnetic card slot and the magnetic card block, achieving precise switching between the privacy film's protective and disassembly states. The oblique deformation of the deformation piece, combined with the pull-out trajectory limitation, ensures that the privacy film always moves along a predetermined path, avoiding the risk of traditional magnetic films shifting and falling off or scratching the screen during forced removal. Simultaneously, the mechanical locking mechanism of the magnetic buckle replaces chemical adhesion, ensuring the privacy film remains undamaged during repeated disassembly and reassembly.

The invention discloses a low-loss CoNbZr film preparation method based on radio frequency magnetron sputtering, and belongs to the technical field of soft magnetic film preparation, and particularly relates to a Co94Zr6 alloy target as a main target material, 1-2 Nb metal sheets are pasted on the surface of the Co94Zr6 alloy target to obtain a CoNbZr composite target material, the CoNbZr composite target material is loaded into a magnetron sputtering equipment growth chamber, a Si substrate is fixed, sputtering is carried out for 8-12 min at the room temperature under the Ar air pressure of 2-4 mtorr and the radio frequency power of 130-150 W, and the low-loss CoNbZr film is obtained. The amorphous CoNbZr soft magnetic thin film is obtained through deposition, gradient precise regulation and control of the thin film components of Co89Nb5Zr6 and Co84Nb10Zr6 are achieved, the high-frequency magnetic performance is considered, and meanwhile the resistivity of the Co-based soft magnetic thin film is greatly improved. In addition, the in-plane uniaxial anisotropic field and cut-off frequency of the thin film can be continuously and accurately regulated and controlled by adjusting the inclination angle of the Si substrate to change within the range of 0-40 degrees.

The application provides a method for simultaneously improving the remanence and coercivity of a micrometer-scale NdFeB-based permanent thick film. The method is to introduce a combined layer during the growth of the NdFeB-based thick film, and the combined layer is arranged between hard magnetic layers, and the arrangement structure of the combined layer is: isolation layer / soft magnetic layer / isolation layer. The non-magnetic layer in the combined layer acts as an isolation layer to increase the coercivity to a certain extent, and the soft magnetic layer improves the remanence through long-range interaction between the hard magnetic layer and the thick film. The isolation layer is preferably Ta, and the soft magnetic layer is preferably Fe. When the combined layer is inserted into 7 layers, and the thickness of the soft magnetic layer is 80 nm, the remanence of the permanent thick film reaches 1.2 T, and the coercivity is maintained at above 1.5 T. The method provides performance guarantee for the use of the NdFeB-based permanent thick film in MEMS and micro permanent magnet motors.

1. Name of the designed product: heating panel of a heater for substrate heating. 2. Use of the designed product: the whole of the designed product is used for a heater for substrate heating, for example, for heat treatment of a disc having a magnetic film as a storage medium of a hard disc, and the part as claimed in the partial design is used for a heating panel of a heater for substrate heating. 3. Design points of the designed product: combination of shape and pattern. 4. Picture or photograph best indicating the design points: front view. 5. Left view and right view are symmetrical, and the left view is omitted; bottom view and top view are symmetrical, and the bottom view is omitted. 6. Other circumstances needing explanation: the part indicated by solid line is the part as claimed in the partial design.

A nanoparticle magnetic film has a structure in which a first phase is dispersed in a second phase. The nanoparticle magnetic film has a nano-sized metal phase containing Fe and Co as a first phase, and oxygen and nitrogen are contained in a second phase. The metal phase contains one or more crystal grains. The mode frequency of the crystal grain diameter of the crystal grains on a volume basis in the nanoparticle magnetic film is 1.5 nm or more and 6.0 nm or less.