Some embodiments provide a system for external manipulation of magnetic nanoparticles in vasculature using a remotely placed magnetic field-generating stator. In one aspect, the systems and methods relate to the control of magnetic nanoparticles in a fluid medium using permanent magnet-based or electromagnetic field-generating stator sources. Such a system can be useful for increasing the diffusion of therapeutic agents in a fluid medium, such as a human circulatory system, which can result in substantial clearance of fluid obstructions, such as vascular occlusions, in a circulatory system resulting in increased blood flow.

Magnet assemblies comprising a housing with a top plate each comprising aligned openings are described. The housing has a bottom ring and an annular wall with a plurality of openings formed in the bottom ring. The top plate is on the housing and has a plurality of openings aligned with the plurality of openings in the bottom ring of the housing. The magnet assembly may also include a non-conducting base plate and/or a conductive cover plate. Methods for using the magnet assembly and magnetic field tuning are also described.

A magnetohydrodynamic (MHD) flow control mechanism is described which substantially improves the existing processes in that smaller magnetic fields, requiring far less mass, are placed away from the forebody of the spacecraft to produce Lorentz forces that augment the lift and the drag forces for guidance, navigation, and control of the spacecraft.

A system that incorporates the subject disclosure may include, for example, a processor that performs operations including detecting a first depression range of a button that includes an electro-mechanical sensor for detecting the first depression range, comparing the first depression range to a first actuation threshold, and asserting a first actuation state when the first depression range is at or exceeds the first actuation threshold. Additional embodiments are disclosed.

A magnetizer including a housing, a passage arranged inside the housing, and a permanent magnet assembly arranged outside the passage to provide a magnetic field passing through the passage. The housing defines an inlet to the passage and an outlet from the passage such that an object to be magnetised can be inserted into the passage via the inlet in the housing and removed via the outlet in the housing. The passage includes a uniform portion where opposing surfaces of the permanent magnet assembly are arranged a uniform distance apart along the length of the uniform portion and a diverging portion arranged between one end of the uniform portion of the passage and the outlet of the housing.

A control device includes a moving portion, a magnetic element coupled to the moving portion, at least one magnetic sensing circuit responsive to magnetic fields, and at least one magnetic flux pipe structure. The magnetic element may comprise alternating positive and negative sections configured to generate a magnetic field. The magnetic element may be any shape, such as circular, linear, etc. The magnetic sensing circuit may be radially offset from the magnetic element, and the magnetic flux pipe structure may be configured to conduct the magnetic field generated by the magnetic element towards the magnetic sensing circuit. The magnetic element may generate the magnetic field in a first plane, and the magnetic sensing may be responsive to magnetic fields in a second direction that is angularly offset from the first plane. The magnetic flux pipe structure may redirect the magnetic field towards the magnetic sensing circuit in the second direction.

The present disclosure provides an inspection system and a method of stray field mitigation. The system includes an array of electron beam columns, a first permanent magnet array, and a plurality of shielding plates. The array of electron beam columns each includes an electron source configured to emit electrons toward a stage. The first permanent magnet array is configured to condense the electrons from each electron source into an array of electron beams. The first permanent magnet array is arranged at a first end of the array of electron beam columns. The plurality of shielding plates extend across the array electron beam columns downstream of the first permanent magnet array in a direction of electron emission. The array of electron beams pass through a plurality of apertures in each of the plurality of shielding plates, which reduces stray magnetic field in a radial direction of the array of electron beams.

A propulsion system, comprising: a fan blade housing; a plurality of fan blades within the fan blade housing; one or more rows of permanent magnets, affixed to the outside of the fan blade housing; one or more fan blade bearings; one or more magnetic field generators affixed to the one or more fan blade bearings and corresponding to the one or more rows of permanent magnets, the magnetic field generators configured to cause the permanent magnets to be propelled forward in the same direction, thereby causing the fan blade housing to which they are attached, and the fan blades within, to spin.

A magnetizing apparatus (1) includes an openable and closeable annular portion (3) formed by a magnet (2). The annular portion (3) includes a lock mechanism (4) configured to hold the annular portion (3) in a closed state. A magnetizing method includes an attaching step of placing an object inside the annular portion (3) by opening and closing the annular portion (3) and attaching the magnetizing apparatus (1) to the object by holding the annular portion (3) in a closed state with the lock mechanism (4), a moving step of moving the magnetizing apparatus (1) relative to the object in the axial direction of the annular portion (3) while the magnetizing apparatus (1) is attached to the object, and a detaching step, after the moving step, of releasing the lock mechanism (4) to detach the magnetizing apparatus (1) from the object.

Disclosed is a radiation and magnetic field generating apparatus irradiating photon beam radiation to in-body affected tissue of a subject. The apparatus includes a radiation generating unit that irradiates the photon beam radiation to the subject and induces generation of secondary electrons in an area of the subject where the photon beam radiation is irradiated, a magnetic field generating unit that includes an insertion structure for forming a low-density space and forms a magnetic field in an area in which the secondary electrons are generated, and a synchronization control unit that controls formation of the magnetic field and controls the formation of the magnetic field such that the secondary electrons move while avoiding normal tissue adjacent to the affected tissue.