649 results about "Magnetic effect" patented technology

A reciprocating and rotating magnetic refrigeration apparatus adopts a dynamo concept and the design of magnetic supply path and heat transfer unit to alternately magnetize and demagnetize a magnetocaloric material to generate thermo-magnetic effect for cooling. The apparatus includes magnetocaloric material located on the head of stator nose poles, magnetic supply coils surrounding the magnetocaloric material, permanent magnets located on a rotating stator, and a heat transfer unit in contact with the magnetocaloric material. Two adjacent magnetocaloric materials magnetize and demagnetize alternately to alter the temperature and entropy of the magnetocaloric material, and through the heat transfer unit, heat exchange occurs between the magnetocaloric materials and the atmosphere to achieve the cooling effect.

A magnetic detector locates magnetically tagged items, such as surgical sponges or instruments, introduced to and remaining in the body cavity of a surgical patient. The magnetic detector is a wand or probe that is manually handleable, and spatially manipulable and moveable, by an operator, such as a medical professional. The detector is moved about at a spatial location of an ambient magnetic field at the patient and operating table. A characteristic of the ambient magnetic field at the spatial location is saved by the detector. The detector is subsequently moved about at the same spatial location. If any magnetically tagged item is present in the vicinity of the detector during this subsequent movement at the spatial location, an anomalous magnetic effect is detected by comparison of the prior detection reading absent the tagged item to the detection reading in presence of the tagged item in the patient. The anomalous magnetic effect, and thus the tagged item, is locatable spatially in the patient, by three-dimensional sensor(s), arrays of sensors, and pluralities of arrays of sensors of the detector. The different detection readings with and without presence of the anomalous magnetic effect caused by presence of the tagged item in the patient are calculable as scalar, vector array, and / or gradient array determinations, according to the particular number and configuration of sensors in the detector.

A reciprocating and rotating magnetic refrigeration apparatus adopts a dynamo concept and the design of magnetic supply path and heat transfer unit to alternately magnetize and demagnetize a magnetocaloric material to generate thermo-magnetic effect for cooling. The apparatus includes magnetocaloric material located on the head of stator nose poles, magnetic supply coils surrounding the magnetocaloric material, permanent magnets located on a rotating stator, and a heat transfer unit in contact with the magnetocaloric material. Two adjacent magnetocaloric materials magnetize and demagnetize alternately to alter the temperature and entropy of the magnetocaloric material, and through the heat transfer unit, heat exchange occurs between the magnetocaloric materials and the atmosphere to achieve the cooling effect.

The invention provides an electric pressure cooker capable of automatically exhausting. The electric pressure cooker comprises a cooker body, a cooker cover and a control circuit, wherein an exhaust pipe and a gravity hammer which is in sealed contact with the exhaust pipe are arranged on the cooker cover; a first connecting rod is additionally arranged on the cooker cover; a ferromagnetic material is arranged at the first end of the first connecting rod; the position, corresponding to the ferromagnetic material, of the cooker body, is provided with an electromagnet which can take a magnetic effect on the ferromagnetic material; the electromagnetic is electrically connected to the control circuit; the second end of the first connecting rod is in transmitted connection to the gravity hammer; and the gravity hammer is displaced directly or indirectly when the second end of the first connecting rod displaces upwards, and the gravity hammer is separated away from the port of the exhaust pipe. By virtue of the electromagnet and a lever linkage device which are mutually matched, the electric pressure cooker can simplify an automatically exhausting structure, shorten a power transmission route, reduce a probability of a jamming phenomenon in a power transmission process and improve product quality.

An aircraft equipped for airborne vector magnetic exploration surveys comprising three magnetometers orthogonally mounted to measure the components of the earth's vector magnetic field; two rotation sensors mounted to measure the angular orientation of the aircraft; and a recording system to record the measurements of the magnetometers, and rotation sensors. The measured angular orientation is used to orientate the measured components of the earth's vector magnetic field to derive true vector acro-magnetic (VAM) data from airborne surveys. Also disclosed is a method for processing magnetic data by removing the permanent, induced, and eddy-current magnetic effects of the aircraft from the magnetic data.

A silicon nanoparticle transistor and transistor memory device. The transistor of the invention has silicon nanoparticles, dimensioned on the order of 1 nm, in a gate area of a field effect transistor. The resulting transistor is a transistor in which single electron flow controls operation of the transistor. Room temperature operation is possible with the novel transistor structure by radiation assistance, with radiation being directed toward the silicon nanoparticles to create necessary holes in the quantum structure for the flow of an electron. The transistor of the invention also forms the basis for a memory device. The device is a flash memory device which will store electrical charge instead of magnetic effects.

The invention relates to the technical field of preparation of environment functional materials, in particular to a magnetic composite material surface imprinting thermosensitive adsorbent, and a preparation method and the application thereof. The method comprises the following steps that: firstly, a ferroferric oxide / nerchinskite nanotube magnetic composite material is prepared by a solvent thermal synthesis method; secondly, the magnetic composite material is modified on ethenyl by using 3-(methacrylo) propyltrimethoxyl silane; and finally, the nerchinskite nanotube magnetic composite material is prepared by using the ethenyl-modified magnetic composite material as a substrate material, 2, 4, 5-trichlorophenol as a template molecule, methacrylate as a functional monomer, N-isopropylacrylamide as a thermosensitive functional monomer, ethylene glycol dimethacrylate as a cross-linking agent, and 2,2'-azodiisobutyronitrile as an initiator. The prepared thermosensitive imprinting adsorbent is obvious in thermal stability and magnetic stability, sensitive in magnetic effect and thermosensitive effect, relatively high in adsorption capacity, obvious in reversible absorption / release function along with temperature and obvious in tertiary calcium phosphate (TCP) molecule recognition performance.

A highly efficient, single sided circuit board layout design providing magnetic field self-cancellation and reduced parasitic inductance independent of board thickness. The low profile power loop extends through active and passive devices on the top layer of the circuit board, with vias connecting the power loop to a return path in an inner layer of the board. The magnetic effect of the portion of the power loop on the top layer is reduced by locating the inner layer return path directly underneath the power loop path on the top layer.

The invention discloses a spherical hinge capable of realizing the rotation angle measurement and a measurement method of the rotation angle. The spherical hinge is characterized in that a ball seat provided with a ball socket therein is formed by a base and an end closure, a ball head is placed in the ball socket, a spherical crown is exposed at an opening of the end closure, and the top surface of the spherical crown of the ball head is connected to a ball-jointed rod; the ball head and the ball socket are concentric, and the ball head can concentrically rotate relatively to the ball socket; permanent magnets are embedded and uniformly distributed on the surface of a low half ball of the ball head; magnetic effect sensors are embedded and uniformly distributed on the surface of the ball socket; sensing output signals of the magnetic effect sensors are used for judging the relative location between the ball head and the ball socket and the direction of the relative movement. The spherical hinge can be used for realizing the three-dimensional angle measurement under the condition of having no influence on the movement accuracy and the mechanical property of ball joints and no damage on the structures of the ball joints.

A motor includes a housing having a substantially cylindrical shape accommodating therein a stator portion and a rotor portion. The housing includes a housing body having an opening at an upper side thereof, and a lid portion arranged between an armature and a sensor so as to close the opening of the housing body. Since the lid portion is made of a magnetic material and is arranged between the armature and the sensor, a magnetic effect on the sensor caused by a magnetic force generated at the armature is minimized. By virtue of such configuration in which the lid portion of the housing functions as a magnetic shield, the motor can be smaller in the axial direction compared with a configuration in which an extra layer of magnetic shield is arranged.

A method and apparatus for preventing damage to a metal component that is susceptible to damage by electro-magnetic effects or reduce manufacturing assembly steps. An initial channel is formed through the metal component. The initial channel is defined by an inner surface. A bushing is placed into the initial channel, wherein the bushing has an outer surface and an inner channel. An interference fit is created between the outer surface of the bushing and the inner surface of the initial channel through the metal component. A final channel is formed through the bushing. In forming the final channel, material is removed from the bushing to increase a size of the inner channel to one that is suitable to receive a fastener and such that the inner surface of the metal component remains unexposed within the final channel. The final channel extends through a second component. A fastener is placed into the final channel to attach the metal component to a second component, wherein electrical magnetic effects occur between the fastener and the bushing.

The invention discloses magnetic aerogel and a preparation method thereof. The preparation method comprises the following steps: loading ferroferric oxide magnetic nanoparticles by taking graphene oxide as a carrier, improving the morphological stability by taking a carbon nano tube as a framework or by using a calcium ion cross-linking effect, freezing and drying to obtain graphene oxide magnetic aerogel, and performing chemical reduction so as to obtain the graphene magnetic aerogel. On the basis of maintaining the ferroferric oxide magnetic effect, the aerogel also has the advantages of low density, great strength, high-temperature resistance and large specific surface area; due to the structure characteristic, the aerogel has the super strong absorption capacity, wave absorption capacity and conductivity; the magnetic aerogel can be used in the fields of sewage treatment, target administration, wave absorption materials and photoelectric materials. The magnetic aerogel is a novel functional magnetic material.

A prime mover using a split coil for magnetically inducing movement of a steel piston. The magnetic effects are emphasized in higher reciprocating movement by the proximate introduction of a permanent magnet. The prime mover is sparkless, brushless, quiet, low friction, and can operate on a wide array of voltages, including high frequency very low voltage signals.

The invention discloses a porous magnetorheological elastomer and a buffer device based on the same. The porous magnetorheological elastomer comprises a rubber substrate, gas somas and soft magnetic packing grains. A foaming agent is promoted to decompose and release gases under certain temperature and magnetic field actions in the crosslinking process of substrates magnetorheological elastomers by utilizing a rubber foaming technology, thus, a great number of obturated gas somas are formed in the magnetorheological elastomer; and after the solidification process of the magnetorheological elastomer is ended, the gas somas are implanted in the magnetorheological elastomer to form the porous magnetorheological elastomer. Meanwhile, the soft magnetic packing grains inside the magnetorheological elastomer are distributed in a chain-shaped structure under the action of a magnetic field so that a favorable magnetic effect is achieved. The obturated gas somas are introduced to the magnetorheological elastomer so that the rigidity and dampness changing performances of the magnetorheological elastomer under the action of the magnetic field are improved; and a compression type buffer device is designed by utilizing the porous magnetorheological elastomer so that a better buffering effect can be achieved.

A foldable electric device comprises a first member, a second member and a pivot portion. The pivot portion is used to pivot the first member and the second member. The first member comprises a first cushion pad and a first magnetic component. The first cushion pad is retractably disposed on a surface of the first member. The first magnetic component is installed in the first member, and synchronously moves with the first cushion pad. The second member comprises a second magnetic component. When the first member and the second member are covered together, with the magnetic effect between the first magnetic component and the second magnetic component, the first cushion pad is linked by the first magnetic unit to protrude from or retract into the first member.

There is disclosed a scanning probe microscope for producing a topographic image of a surface of a sample by noncontact AFM (atomic force microscopy). First, a first topographic image of the sample undergoing magnetic effects is produced from the resonance frequency of a cantilever by FM detection. Then, a second topographic image of the sample free of magnetic effects is produced from the amplitude of the cantilever by slope detection. The difference between these two topographic images is taken. Thus, a magnetic force image is produced.

The present invention relates to a rotation angle determination device (1) used for determining the rotation angle position of a rotating shaft (10). The device comprises the following components: a main rotor (11) which is coupled with the rotating shaft (10) and is provided with a first sensor unit (12) for determining the rotation angle position of the main rotor (11); and an additional rotor (13) which is rotatably coupled with the main rotor (11) and is provided with a second sensor unit (14) for determining the rotation angle position of the additional rotor (13). According to the invention, each of the sensor unit (12, 14) is provided with at least one sensor with induction effect and at least one sensor with magnetic effect.

A security device includes a carrier for a tell-tale provision having electro-magnetic characteristics. The device is adapted to be releasably secured to an article to be protected, in particular to the shaft of a golf club, in a tamper-resilient manner and to retain the tell-tale provision in a spaced relationship from the article. In this way any adverse magnetic effects on the tell-tale provision by ferromagnetic parts of the article are avoided. Preferably, the tell-tale provision is spaced at least 3 mm from the article to which the device is secured.

Disclosed is a low-B rare earth magnet. The rare earth magnet contains a main phase of R2T14B, and comprises the following raw material components: 13.5 at%-14.5 at% of R, 5.2 at%-5.8 at% of B, 0.3 at%-0.8 at% of Cu, 0.3 at%-3 at% of Co, and the balance being T and inevitable impurities, the R being at least one rare earth element comprising Nd, and the T being an element mainly comprising Fe. 0.3-0.8 at% of Cu and an appropriate amount of Co are added to the rare earth magnet by compositing, so that three Cu-rich phases are formed in the grain boundary, and the magnetic effect of the three Cu-rich phases existing in the grain boundary and the solving of the problem of insufficient B in the grain boundary can obviously improve the squareness and heat-resistance of the magnet.

An inductance component comprising a column-shaped magnetic material substrate 21, conductor layer 24 covering ends and a peripheral surface of the substrate, coil portion 27 having groove portion 25 and wire conductor portion 26 formed in the conductor layer covering the peripheral surface, electrode portions 28 including the conductor layer covering the ends of the substrate, and magnetic material portion 31 made of sintered magnetic material on the coil portion, wherein the conductor layer has a melting point higher than a sintering temperature of the sintered magnetic material. The manufacturing process comprises forming a substrate, forming a conductor layer, forming a coil portion, forming electrode portions at ends of the substrate, and forming a magnetic material portion of sintered magnetic material on the coil portion. The present invention provides an inductance component with high inductance, low magnetic flux leakage, and less undesirable magnetic effects on adjacent components.

The invention discloses a parallel restoration method for heavy metal pollution in farmland, which belongs to the technical field of heavy metal pollution restoration. It can be implemented by embedding repair rods in the soil, and uniformly discharging and collecting materials through the soil filter screen, so as to directly The way of water injection penetrates into the soil autonomously, and is doped with heavy metal scavenger and repair microspheres. The heavy metal scavenger uses the infiltration of water to capture the heavy metal ions in the soil and forms insoluble substances, while the repair microspheres infiltrate simultaneously In the process of peeling off the surface, the nutrients are continuously released into the soil to improve the soil properties. At the same time, the insoluble heavy metals are adsorbed and captured, and the magnetic effect of the repair microspheres is used to assist diffusion in the soil and intersect to form a tight repair. Finally, the residual repair microspheres and heavy metals are recovered through a magnetic field, which not only significantly reduces the cost of repair, but also greatly improves the efficiency and effect of repairing heavy metal pollution in farmland.

The invention provides a magnetic control soft grasping robot based on magnetically programmed temperature sensitive hydrogel. The magnetic control soft grasping robot based on the magnetically programmed temperature sensitive hydrogel comprises a central part and gripper parts; a plurality of the gripper parts are uniformly distributed on the periphery of the central part; each gripper part is magnetic particle-containing temperature response hydrogel; and the gripper parts are bent by applying an alternating magnetic field to the gripper parts. Any gripper part is of a double-layer structure; the upper layer structure is dual network cross-linked hydrogel; the lower layer structure is the magnetic particle-containing temperature response hydrogel; and the deformation amount of the lowerlayer structure is greater than the deformation amount of the upper layer structure by applying the alternating magnetic field to the gripper parts. According to the magnetic control soft grasping robot based on the magnetically programmed temperature sensitive hydrogel, magnetic nano-particles are added into temperature sensitive hydrogel through a magnetic programming technology; and when the magnetically programmed temperature sensitive hydrogel is placed in a magnetic field, the internal temperature of the hydrogel changes because of a magnetic effect, and the deformation of the hydrogel is controlled by utilizing unequal deformation amounts of the two layers of the grippe parts.

The invention relates to a ZnFe2O4 / BiOBr magnetic photocatalyst and a preparation method thereof. A semiconductor material BiOBr and a magnetic material ZnFe2O4 are compounded by a simple co-precipitation method under a condition of room temperature to obtain the magnetic photocatalytic material. The prepared magnetic photocatalytic material can effectively degrade rhodamine B in organic dye wastewater under visible light irradiation, can realize efficient recycling and repetitive cycle use under the magnetic effect of an additionally applied magnetic field, reduces the use cost of a catalytic material, and provides a new photocatalytic material for removal of organic pollutants in the environment; the synthesis method is simple, high in operability, and low in cost, has the conditions easy to control, and is beneficial for large-scale industrialized production and application; and the prepared composite material having a heterogeneous structure has the advantages of higher visible light catalytic activity and better magnetic separability and cycle stability.

The invention relates to a method for transforming a columnar crystal-orienting isometric crystal of a directional solidified alloy with strong static magnetic field induction and belongs to the technical field of an alloy metallographic structure controlled by a physical field. According to the method, the growth morphology of an alloy treelike crystal is controlled by utilizing a thermoelectric magnetic effect generated under the mutual action of the strong static magnetic field and a temperature gradient generated on a solid liquid interface during a directional solidifying process. The method provided by the invention is characterized in that a 10-14T strong static magnetic field is utilized; a typical Bridgman directional solidifying device is adopted; the solid liquid interface of a melt is designed as being in a central position of the strong static magnetic field; the whole solidifying process is finished under the strong static magnetic field; a lathy alloy bar is adopted; the temperature gradient of the solid liquid interface of a sample is changed following the change in furnace temperature and alloy variety; the directional solidifying is performed under the condition of a downward drawing speed of the alloy bar at 10-120 microns per second; and after a crystal grows to a stable stage, the crystal is quickly pulled into a cooling medium for quenching, so that a special isometric crystal alloy structure is finally obtained under the directional solidifying condition.

The present invention is directed to a magnetic device for treating conditions such as incontinence, upper and lower back pain, irritable bowel syndrome, arthritis in the hand and fingers, menstruation problems and prostate problems. The magnetic device in a preferred form consists of a mesh with spaced apart holding portions for magnets so that the device produces a synergistic magnetic effect to the desired area. The magnetic device in another preferred form consists of spaced apart magnets that are arranged about a desired area for treatment but maintaining the spacing relative to each other. In another preferred form, the magnetic device is a garment overlay which has spaced apart magnets on the overlay in positions that correspond to significant acupuncture points when the overlay is fitted. The garment overlay also has locating means for locating the position of the overlay relative to the desired body portion.

The invention relates to the chiral modulator technology and provides a multi-functional chiral modulator which works in a terahertz band and has a simple structure, and chiral dependent transmission,chiral dependent surface plasmon excitation, chiral polarization state control and the like can be achieved. Therefore, the terahertz chiral modulator based on a superstructure hole structure is disclosed, the superstructure hole structure is formed by four layers which are a metasurface metal ring, a dielectric layer, a metal plate hollowed out in the middle and a dielectric layer from the top to bottom, metal strip pair resonators are employed by basic units of the metasurface metal ring of the top layer, each of the metal strip pair resonators is formed by two same metal strips which are perpendicular to each other, the metal strip pair resonators are uniformly and rotatingly arranged around a center point O to form the metal ring, the center of the metal ring is opposite to the centerof a metal hole made in the metal plate. A strong magnetic effect can be generated by the design of the metal ring, the dielectric layer and the metal plate. The terahertz chiral modulator is mainlyapplied to the design and manufacture of chiral modulators.

The invention discloses a non-linear piezoelectric / electromagnetic composite broadband energy harvester. The non-linear piezoelectric / electromagnetic composite broadband energy harvester comprises a low-frequency piezoelectric composite beam, a high-frequency piezoelectric composite beam, a movable magnet, a static magnet and a coil, wherein one end of the low-frequency piezoelectric composite beam is connected with one end of the movable magnet in series, the high-frequency piezoelectric composite beam is located above the low-frequency piezoelectric composite beam and the movable magnet; the coil is located below the movable magnet; the static magnet is fixed at one side of another end of the movable magnet, and the static magnet and the other end of the movable magnet are arranged in parallel. The non-linear piezoelectric / electromagnetic composite broadband energy harvester disclosed by the invention has the advantages that the low-frequency piezoelectric composite beam, the high-frequency piezoelectric composite beam and the coil are simultaneously integrated on the same structure to realize the piezoelectric-electromagnetic composite energy harvesting; the energy harvester can simultaneously output the large voltage and current, and broadens the optimal load application range. The energy harvesting of the low-frequency piezoelectric composite beam, the high-frequency piezoelectric composite beam and the coil in the broadband range can be realized through the non-linear magnetic effect between the movable magnet and the static magnet.

A cosmetic and therapeutic mask assembly with an accessible and positionable magnetic pocket system is disclosed for use in interaction with and treatment of a face, head or other body area of a human or animal treatment subject. The invention is provided with an elastic support pattern of one or more layers which is provided with an integral or multi-ported space designed to fit adjacently to sense organs or other body areas, or skin or tissue. A number of subassemblies having accessible fluted pivot pockets, each having access grooves, arranged in series or by virtue of other configurations, are positioned close to the perimeter of the pivot space and affixed to the support pattern. A number of magnets, each having positive and negative poles, are respectively mounted in the pivot pockets where they can be pivoted and positioned by contact through the respective access grooves, or prepositioned before installation; to create magnetic pairings of adjacent pocketed magnets, to transmit and communicate a magnetic differential and field producing a magnetic effect and resulting attraction and repulsion forces, through or traveling through the support pattern to an adjoining treatment area. The invention is further provided with an attachment strap or belt or like structure for securing and installing the mask assembly of the invention functionally snugly in relation to a treatment area.

The present invention discloses a backlight module and an LCD having a positioning structure for fixing an optical film and a frame. The frame includes a side frame having an assembling hole. The optical film is placed on the side frame and includes a protruded ear having a positioning hole. The positioning structure includes: a magnetic member installed inside the assembling hole; an attracted member including a compression part and a positioning pillar, wherein the positioning pillar is connected to the compression part and gets inside the assembling hole through the positioning hole such that the positioning pillar is connected to an attraction hole due to a magnetic effect to make the compression part compress and fix the optical film on the side frame. The positioning structure can fix the optical film in X, Y, and Z directions to raise the positioning reliability, assembling speed, and capacity.