647 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.

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 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 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.

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.

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.

A device or class of devices that provides a mechanism for controlling charge current flow in transistors that employs collective magnetic effects to overcome voltage limitations associated with single-particle thermionic emission as in conventional MOSFETs. Such a device may include two or more magnetic stacks with an easy-in-plane ferromagnetic film sandwiched between oppositely magnetically oriented perpendicular magnetization anisotropy (PMA) ferromagnets. Each stack includes two non-magnetic layers separating the easy-plane ferromagnetic film from the PMA layers. Charge current flow through one of these stacks controls the current-voltage negative differential resistance characteristics of the second stack through collective magnetic interactions. This can be exploited in a variety of digital logic gates consuming less energy than conventional CMOS integrated circuits. Furthermore, the easy-in-plane magnetic films may be subdivided into regions coupled through exchange interactions and the in-plane fixed magnetic layers in the input magnetic stacks can be used in non-volatile logic and memory.