Embodiments described herein provide devices, systems, and techniques for generating a magnetic field pattern that includes a plurality of magnetic poles. In specific embodiments, a magnetic device is disclosed which generates a magnetic field pattern including two magnetic poles of the same polarity on both ends, or sides of the magnetic device, and a third magnetic pole of a different polarity from the other two magnetic poles, wherein the third magnetic pole is located inside the magnetic device and between the other two magnetic poles. Moreover, the magnetic device is configured with two openings located at the two transition boundaries/interfaces of the three-pole magnetic field. As such, the two transition boundaries become accessible to objects. In particular, when another magnet is inserted at an interface between two magnetic poles, the magnet will register right at the interface and hover over or be suspended at the opening of the magnetic device.

A rheometer has rotary rheometer and a linear DM(T)A analysis unit. A measuring shaft of the rotary rheometer carries a measuring part that faces a measuring part carried on an adjusting rod of the linear analysis unit. The sample under test is placed in a measuring gap between the measuring parts. The DM(T)A analysis unit has a linear motor, in particular magnetically operated, with a stator and a slider, and a magnetically-operated gravitational compensation unit, by way of which it is possible to compensate for the weight force of the adjusting rod, the measuring part on the adjusting rod, the slider, and any optional the components fastened to the slider.

An axially compliant rolling bearing for precision motion stages having a stage, at least one bearing member slidably disposed along a rail, and a compliant joint interconnecting the at least one roller bearing to the stage. The compliant joint is sufficiently compliant to permit movement of the stage in the axial direction while remaining stiff in other directions orthogonal to the axial direction.

Apparatuses, systems and methods are described for a flywheel system incorporating a rotor made from a high-strength material in an open-core flywheel architecture with a high-temperature superconductive (HTS) bearing technology to achieve the desired high energy density in the flywheel energy storage devices, to obtain superior results and performance, and that eliminates the material growth-matching problem and obviates radial growth and bending mode issues that otherwise occur at various high frequencies and speeds.

A magnetic bearing includes a ring-shaped first magnet, a ring-shaped second magnet, a first magnetic body and a second magnetic body. The ring-shaped first magnet is magnetized in an axial direction. The ring-shaped second magnet is concentrically arranged with the first magnet and is magnetized in the axial direction. The first magnetic body is provided on a first surface in the axial direction of the second magnet. The second magnetic body is provided on a second surface parallel to the first surface in the axial direction of the second magnet. A thickness of each of the first magnetic body and the second magnetic body is less than or equal to an acceptable fluctuation amount in the axial direction of the second magnet with respect to the first magnet and greater than or equal to 0.1 mm.

A magnetic trap is configured to arrange at least one diamagnetic rod. The magnetic trap includes first and second magnets on a substrate that forms the magnetic trap defining a template configured to self-assemble diamagnetic material. Each of the first and second magnets extends along a longitudinal direction to define a magnet length, and contact each other to define a contact line. The first magnet and the second magnet have a diametric magnetization in a direction perpendicular to the contact line and the longitudinal direction so as to generate a longitudinal energy potential that traps the diamagnetic rod along the longitudinal direction.

A hydroelectric turbine system includes a bridge assembly including a central supporting ring having an axially elongated body and a tongue extending axially from the body. An axial length of the body is greater than a radial thickness of the body. The radial thickness of the body is greater than a radial thickness of the tongue. The system includes a stator having a radially inner circumferential surface and a radially outer circumferential surface. The inner circumferential surface is disposed on a radially outer surface of the tongue. The system includes a bearing mechanism extending axially along the outer circumferential surface of the stator. The mechanism includes one or more bearings. Each bearing includes a surface that extends parallel to the outer circumferential surface of the stator. The system includes a rotor supported radially outward of the stator and configured to rotate relative to the stator about an axis of rotation.

A rheometer has rotary rheometer and a linear DM(T)A analysis unit. A measuring shaft of the rotary rheometer carries a measuring part that faces a measuring part carried on an adjusting rod of the linear analysis unit. The sample under test is placed in a measuring gap between the measuring parts. The DM(T)A analysis unit has a linear motor, in particular magnetically operated, with a stator and a slider, and a magnetically-operated gravitational compensation unit, by way of which it is possible to compensate for the weight force of the adjusting rod, the measuring part on the adjusting rod, the slider, and any optional the components fastened to the slider.

A hydroelectric turbine may include a stator comprising a first plurality of electricity-generating elements and a rotor comprising a second plurality of electricity-generating elements. The rotor may be disposed radially outward of an outer circumferential surface of the stator and configured to rotate around the stator about an axis of rotation. The rotor may be a flexible belt structure. The turbine may further include at least one bearing mechanism configured to support the rotor relative to the stator during rotation of the rotor around the stator.

A magnet apparatus for generating a high gradient and/or high strength magnetic field, comprises: two permanent magnets (2, 4) located side-by-side with oppositely oriented magnetic field polarities and end surfaces of opposite polarities next to one another, wherein the magnetic anisotropy of the magnets exceeds the magnetic induction of the material of the magnets; and a mask (6) or masks (6) on a first end of each of the adjacent permanent magnets (2, 4), the mask(s) 6 comprising a non-retentive material covering adjacent end surfaces of the two permanent magnets (2, 4) with a gap (8) along a joining line between the two permanent magnets (2, 4) to form a zone of high-gradient magnetic field above the joining line; wherein the mask(s) (6) are embedded within the magnets (2, 4) and/or have a varying thickness and wherein the mask(s) (6) each have a maximum thickness greater than a tenth of the thickness of the respective magnet (2, 4).