A resin composition including: a magnetic fluid that includes magnetic particles, a dispersant, and a dispersion medium; and a resin or precursor thereof that includes, in a molecule thereof, at least one partial structure selected from the group consisting of a diene skeleton, a silicone skeleton, a urethane skeleton, a 4- to 7-membered ring lactone skeleton, an alkyl group having from 6 to 30 carbon atoms and an alkylene group having from 6 to 30 carbon atoms, a production method thereof, a resin composition molded body obtained by using the resin composition, and a production method thereof.

Composition for making magnetic coverings comprising at least one elastomer, at least one magnetic filler, at least one compatibilizer, wherein the at least one magnetic filler is present in the composition in an amount comprised between 90% and 300% by weight, preferably between 100% and 250% by weight based on the weight of the least one elastomer.

An embodiment of the present invention relates to a magnetic sheet having both an electromagnetic field shielding function and a heat dissipating function, and to a wirelessly charged magnetic member using same.

A soft magnetic resin composition contains flat soft magnetic particles, and a resin component containing an epoxy resin, a phenol resin, and an acrylic resin. The epoxy resin consists of only an epoxy resin having three or more functional groups, the phenol resin consists of only a phenol resin having three or more functional groups, and the content ratio of the acrylic resin in the resin component is 25 mass % or more.

This invention provides parasitic millirobots that can effectively adapt to an unstructured environment and coherently interact with diverse objects in order to fulfil various application needs. Particularly, a minimalist millirobot construction strategy by splashing composited agglutinate magnetic spray (M-spray) is adopted, which is capable of self-turning multifarious milli-/centi-objects into parasitic millirobots on-demand. Through taking full advantage of the objects' inherent structure and a covered thin drivable film, the M-spray demonstrates superior handling (from 1-D to 3-D structures) and loading capabilities (up to thousand-fold and hundred-fold of its volume and weight, respectively) while with neglectable size increment (as low as 1%) to target. Moreover, benefitting from peculiarities of online reprogramming and controllable disintegration, the parasitic millirobots can rewrite its locomotion mode according to the task and disintegrate themselves after mission accomplished, offering high adaptivity and compatibility for in vivo biomedical applications. Methods for conversion and fabrication thereof are also provided.

Techniques for fabricating a semiconductor package having magnetic materials embedded therein are described. For one technique, fabrication of package includes: forming a pad and a conductive line on a build-up layer; forming a raised pad structure on the build-up layer, the raised pad comprising a pillar structure on the pad; encapsulating the conductive line and the raised pad structure in a magnetic film comprising one or more magnetic fillers; planarizing a top surface of the magnetic film until top surfaces of the raised pad structure and the magnetic film are co-planar; depositing a primer layer on the top surfaces; removing one or more portions of the primer layer above the raised pad structure to create an opening; and forming a via in the opening on the raised pad structure. The primer layer may comprise one or more of a build-up layer, a photoimageable dielectric layer, and a metal mask.

A method of manufacturing a magnetic member comprises preparing a base member, which have a front surface and a back surface, and wherein an anchor coat layer is formed on the front surface, and forming a composite magnetic layer on the anchor coat layer.

A method of producing an oppositely magnetized magnetic structure within or on a substrate material includes: generating first and second numbers of cavities within or on a substrate material and filling the first and second numbers of cavities with first and second hard magnetic materials, respectively exhibiting first and second coercive field strengths, wherein the second coercive field strength is smaller than the first coercive field strength. The method further includes magnetizing, in a first direction, the first and second arrangements of magnetic structures, by a magnetic field having a field strength that exceeds the first and second coercive field strengths. The method further magnetizes the second arrangement of hard magnetic structures in a second direction, which differs from the first direction, by a second magnetic field having a field strength below the first coercive field strength but greater than the second coercive field strength.

Some variations provide a magnetically anisotropic structure comprising a magnetically anisotropic film on a substrate, wherein the magnetically anisotropic film contains a plurality of discrete magnetic hexaferrite particles, wherein the film is characterized by an average film thickness from 1 micron to 5 millimeters, and wherein the magnetically anisotropic film contains from 2 wt % to 75 wt % organic matter. Some variations provide a magnetically anisotropic structure comprising an out-of-plane magnetically anisotropic film on a substrate, wherein the magnetically anisotropic film contains a plurality of discrete magnetic hexaferrite particles, wherein the film is characterized by an average film thickness from 1 micron to 5 millimeters, and wherein the magnetically anisotropic film contains a concentration of hexaferrite particles of at least 40 vol %. The magnetically anisotropic structures are fabricated at low temperatures so that the magnetically anisotropic film may be monolithically integrated into an integrated-circuit fabrication process.

A method of producing an oppositely magnetized magnetic structure within or on a substrate material includes: First and second numbers of cavities are generated within or on a substrate material and are filled with first and second hard magnetic materials, respectively, exhibiting first and second coercive field strengths, respectively, so as to produce first and second arrangements of hard magnetic structures, respectively, the second coercive field strength being smaller than the first coercive field strength.

The first and second arrangements of hard magnetic structures are magnetized in a first direction by a first magnetic field exhibiting a field strength which exceeds the first and second coercive field strengths.

The second arrangement of hard magnetic structures is magnetized in a second direction, which differs from the first direction, by a second magnetic field exhibiting a field strength which falls below the first coercive field strength but exceeds the second coercive field strength. Magnetizing the second arrangement of hard magnetic structures includes exposing the first and second arrangements of hard magnetic structures to the second magnetic field.