A magnetic field generator including: a yoke; and a plurality of main magnetic pole magnets and a plurality of secondary magnetic pole magnets, the main magnetic pole magnets and the secondary magnetic pole magnets comprising a rare earth sintered magnet, having magnetic pole orientations different from each other by substantially 90°, and being alternately arranged in a linear Halbach magnet array without gaps and fixed to the yoke, wherein near contact surfaces of the main magnetic pole magnets and the secondary magnetic pole magnets, a grain boundary diffusion layer is formed in which at least one of Dy or Tb being heavy rare earth elements or a compound of at least one of the Dy or the Tb is diffused into internal grain boundaries from the contact surfaces.

A system and method use a magnetic cancellation loop to control magnetic wheel adhesion. The wheel has an inner annular disc composed of a non-magnetic material with apertures to retain ferromagnetic structures and magnets, and an outer annular discs composed of a ferromagnetic material and are disposed on either side of the inner annular disc. Each outer annular disc has a non-magnetic isolator ring having curves extending in a serpentine manner. In a first configuration, the curves isolate the ferromagnetic structures from the magnets, thereby generating a first magnetic flux to increase the adhesion of the wheel to the ferromagnetic surface. In a second configuration, at least one outer annular disc is rotated to dispose the curves to allow magnetic interaction between the ferromagnetic structures and magnets, thereby generating a second magnetic to decrease the adhesion of the wheel to the ferromagnetic surface. The method implements the system.

A system that incorporates the subject disclosure may include, for example, a button including a fixed force magnet coupled to a first housing assembly component serving as a top portion of the button, a variable force magnet coupled to a second housing assembly serving as a bottom portion of the button, and a spring coupled to the fixed force magnetic and the variable force magnet for repelling the fixed force magnet from the variable force magnet according to a spring constant of the spring. The variable force magnet emitting a magnetic field to counter the spring constant and thereby adjust a force required to depress the button. Additional embodiments are disclosed.

A solid-core ring-magnet having one or more cavities is provided. The magnet can have an overall cylindrical shape or a rectangular-prism shape. In either case, a portion of cavity walls of the magnet are ring shaped, causing the magnetic field lines to emanate from the magnet in the shape of a ring. The diameter of the ring shaped cavities can be constant throughout, constant through a portion of the cavity, variant throughout, or variant through a portion of the cavity. The cavities open to the end of the magnet, and terminate toward the core of the magnet. Also provided are systems and kits having solid-core ring-magnets. Methods of purifying a macromolecule using the solid-core ring-magnets are also provided.

A system that incorporates the subject disclosure may include, for example, a processor that performs operations including receiving an actuation profile comprising one or more actuation thresholds responsive to a detection of a triggering event during a gaming session of a video game, configuring the sensor according to the one or more actuation thresholds, receiving, from the sensor, a signal indicating a depression range of the button, comparing the depression range to the one or more actuation thresholds of the actuation profile, and generating an actuation state when the depression range exceeds an actuation threshold of the one or more actuation thresholds. Additional embodiments are disclosed.

A solid-core ring-magnet having one or more cavities is provided. The magnet can have an overall cylindrical shape or a rectangular-prism shape. In either case, a portion of cavity walls of the magnet are ring shaped, causing the magnetic field lines to emanate from the magnet in the shape of a ring. The diameter of the ring shaped cavities can be constant throughout, constant through a portion of the cavity, variant throughout, or variant through a portion of the cavity. The cavities open to the end of the magnet, and terminate toward the core of the magnet. Also provided are systems and kits having solid-core ring-magnets. Methods of purifying a macromolecule using the solid-core ring-magnets are also provided.

A system that incorporates the subject disclosure may include, for example, a button including a fixed force magnet coupled to a first housing assembly component serving as a top portion of the button, a variable force magnet coupled to a second housing assembly serving as a bottom portion of the button, and a spring coupled to the fixed force magnetic and the variable force magnet for repelling the fixed force magnet from the variable force magnet according to a spring constant of the spring. The variable force magnet emitting a magnetic field to counter the spring constant and thereby adjust a force required to depress the button. Additional embodiments are disclosed.

An electro-permanent magnet (EPM) for an electromagnetic mooring system (EMS) includes a low coercivity magnet surrounded by a reversible coil, and one or more high coercivity magnets surrounding the low coercivity magnet and the reversible coil. The reversible coil switches polarity of the low coercivity magnet to null the stronger, one or more high coercivity magnets. The nulling of the stronger, one or more high coercivity magnets allows for the EMS to connect and disconnect to an adjacent apparatus.

The present disclosure provides systems and methods of controlling a magnetically confined plasma sputtering process using the waste heat transferred from the plasma into the target material and then into thermally controlled magnetic field adjustment assemblies that modify the strength of the plasma confinement magnetic fields on the target material.

The present disclosure relates to a dual hybrid electromagnet module for controlling a microrobot. More specifically, the present disclosure relates to an electromagnetic field system in which a dual hybrid electromagnet module including a permanent magnet and an electromagnet is used for controlling a microrobot so that it is possible to reduce the number of used electromagnets so as to reduce power consumption and the amount of heat generated from the electromagnet module. The electromagnetic field system is capable of being used for various medical procedures and surgeries using a microrobot.