Disclosed are a supporting structure having a variable form and an electronic device having the same. A supporting structure may include a fixing module, a tail end module, and a flexible module connecting the fixing module and the tail end module. The flexible module may include multiple chain units. The chain unit may include a support plate having a support surface and a lower surface opposite to the support surface, and a driving portion extending along from a side of the support plate away from toward the lower surface of the support plate. The chain units are hingedly connected in series. Adjacent chain units may drive the support surfaces to construct different forms through interaction between the driving portions, thereby forming the supporting structure whose form can be flexibly changed.

An electronic apparatus includes a rotatable operation member that can be rotationally operated, a base member, a magnet having alternately magnetized N and S poles and rotatable integrally with the rotatable operation member, and first and second magnetic members disposed so that the magnet is disposed between them in an axial direction of a rotational center axis of the rotatable operation member and having a plurality of comb tooth portions. In the axial direction, the first magnetic member, the magnet, and the second magnetic member are disposed on an opposite side of the base member from the rotatable operation member. A part of an outer circumferential portion of the rotatable operation member is exposed to an outside from an opening provided on an exterior member of the electronic apparatus. The magnet, the first magnetic member, and the second magnetic member are covered with the exterior member.

A planar magnet for magnetic density separation, comprising an array of pole pieces succeeding in longitudinal direction of a mounting plane, each pole piece having a body extending transversely along the mounting plane with a substantially constant cross section that includes a top segment that is curved to distribute the magnetic field associated with the top surface of the pole piece such that its strength transverse to the mounting plane is substantially uniformly distributed in planes parallel to the mounting plane, the curved top segments having a width (w) in longitudinal direction of the mounting plane and a maximum height (h) transverse to the mounting plane, wherein the top segments of successive pole pieces are unequal in height and/or width.

Provided are a magnetic fluid composite for display use which enables visually recognizing a subtle shape caused by a spiking phenomenon and which can exhibit a color other than black, and a magnetic fluid composite display device.

A magnetic fluid composite 1 for display use contains water 10, an oily magnetic fluid 20 and poorly magnetic light shielding pieces 30.

The light shielding pieces 30 have a flake shape and include respectively hydrophilic layers 31, light shielding layers 33 and hydrophilic layers 35 that are laminated in the written order.

The light shielding pieces 30 are arranged along the interface 1i between the water 10 and the oily magnetic fluid 20 so that the interface 1i between the water 10 and the oily magnetic fluid 20 is covered with a number of the light shielding pieces 30.

A magnetic fluid composite display device 2 includes a transparent container 40 including a glass container main body 41 and a resin lid 42, a magnetic fluid composite 1 placed inside the container, and a permanent magnet 50 configured to apply a magnetic force to the magnetic fluid composite 1.

An actuator to displace, for example a mirror, provides movement with at least two degrees of freedom by varying the currents in two electromagnets. A moving part includes a permanent magnet with a magnetic face constrained to move over a working area lying substantially in a first plane perpendicular to a direction of magnetization of the magnet. The electromagnets have pole faces lying substantially in a second plane closely parallel to the first plane, each pole face substantially filling a quadrant of the area traversed by the face of the moving magnet. An optical position sensor may direct a beam of radiation at the moving magnet through a central space between the electromagnets. The sizes of facets in a pupil mirror device may be made smaller in a peripheral region, but larger in a central region, thereby relaxing focusing requirements.

A passive magnetic constant-force apparatus comprises a geometry and arrangement of permanent magnets, ferromagnetic components, and non-magnetic structural components. The apparatus is easily and precisely adjustable, cost-effective, with a high load capacity, and with minimal parasitic forces. The apparatus is suitable for use as a counterbalance for vertical linear motion applications and may be integrated with or attached to a linear motion stage.

A method for manufacturing a multicomponent permanent magnet, and a multicomponent permanent magnet are proposed. The multicomponent permanent magnet has a first permanent magnet having a R-T-B-composition, wherein R is at least one selected from the group consisting of Y, Ce, La, Pr, Nd, Sm, Eu and Gd and T is one or more transition metal elements including Fe; and a second permanent magnet having a R-T-B-composition, wherein R is at least one selected from the group consisting of Y, Ce, La, Pr, Nd, Sm, Eu and Gd and T is one or more transition metal elements including Fe, the second magnet including at least one of a heavy rare earth element (HRE) and an increased amount of Ce and/or Co, the second magnet having different magnetic properties, in particular a higher coercivity, than the first magnet. The first magnet and the second magnet are connected mechanically, wherein the connection is electrically conductive with an adjusted electrical resistivity.

The present disclosure provides a power module and a manufacturing method thereof. The power module includes a substrate, an electronic component, a magnetic component and an encapsulation layer. The substrate includes a first surface and a second surface opposite to each other, and a working region. The working region is disposed on the first surface or the second surface. The electronic component is disposed on the substrate. The magnetic component is disposed on the working region and includes a lateral periphery. The encapsulation layer is disposed on the substrate, covers the electronic component and at least partially surrounds the lateral periphery of the magnetic component. A projection of the encapsulation layer on the first surface of the substrate is not overlapped with a projection of the working region on the first surface, and a gap is formed between the encapsulation layer and the lateral periphery of the magnetic component.

A case for a portable electronic device includes a housing, a lid, and a hinge rotatably coupling the lid to the housing such that the lid is operable between an open position and a closed position. The hinge includes a first multipole magnet coupled to the lid such that the first multipole magnet rotates with the lid. A second multipole magnet is coupled to the housing and is arranged coaxially with the first multipole magnet and such that the first multipole magnet and the lid rotate relative to the second multipole magnet. The lid is unstable between the open and closed positions, such that, between the open position and the closed position, the lid is biased toward either the open position or the closed position depending on an angle of orientation of the lid relative to the housing.

A magnetic coupler having a housing defining a coupler plane, a magnet assembly positioned at least partially within the housing, the magnet assembly being movable relative to the coupler plane, and a release assembly coupled to the magnet assembly to selectively reposition the magnet assembly relative to the coupler plane based on the angular orientation of the release assembly.