A magnetic field application device according to an embodiment includes a first coil assembly and a second coil assembly spaced apart in parallel from each other, a power supply configured to apply respective currents to the first coil assembly and the second coil assembly, a controller, and a resonator accommodation unit disposed between the first coil assembly and the second coil assembly, wherein each of the first coil assembly and the second coil includes a coil configured to generate a magnetic field, a guide member connected to a terminal of the coil, a magnetic material mount connected to a terminal of the guide member, and a magnetic material fixed to the magnetic material mount, and wherein the controller is configured to control the currents applied from the power supply to the first coil assembly and the second coil assembly.

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 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.

An image sensing device includes a first substrate configured to include a plurality of unit pixels configured to detect incident light to produce pixel signals carrying image information in the incident light, a second substrate positioned adjacent to the first substrate and including a structure that generates a first magnetic field at the first substrate affecting the plurality of unit pixels and at least one shielding device disposed between the first substrate and the second substrate, wherein the shielding device includes a sensing circuit configured to detect a first voltage corresponding to the first magnetic field and an offset circuit configured to generate, based on the first voltage, a second magnetic field that counteracts the first magnetic field.

An image sensing device includes a first substrate configured to include a plurality of unit pixels configured to detect incident light to produce pixel signals carrying image information in the incident light, a second substrate positioned adjacent to the first substrate and including a structure that generates a first magnetic field at the first substrate affecting the plurality of unit pixels and at least one shielding device disposed between the first substrate and the second substrate, wherein the shielding device includes a sensing circuit configured to detect a first voltage corresponding to the first magnetic field and an offset circuit configured to generate, based on the first voltage, a second magnetic field that counteracts the first magnetic field.

Electromechanical lock and method are disclosed. The lock includes: a movable permanent magnet to move between a first position and a second position; a stationary permanent semi-hard magnet; and an electrically powered magnetization coil positioned adjacent to the stationary permanent semi-hard magnet to switch a polarity of the stationary permanent semi-hard magnet between a first magnetization configuration and a second magnetization configuration. The first magnetization configuration of the stationary permanent semi-hard magnet moves the movable permanent magnet to the first position. The second magnetization configuration of the stationary permanent semi-hard magnet moves the movable permanent magnet to the second position. A magnetic axis of the movable permanent magnet is side by side with a magnetic axis of the stationary permanent semi-hard magnet.

Electromechanical lock and method are disclosed. The lock includes: a movable permanent magnet to move between a first position and a second position; a stationary permanent semi-hard magnet; and an electrically powered magnetization coil positioned adjacent to the stationary permanent semi-hard magnet to switch a polarity of the stationary permanent semi-hard magnet between a first magnetization configuration and a second magnetization configuration. The first magnetization configuration of the stationary permanent semi-hard magnet moves the movable permanent magnet to the first position. The second magnetization configuration of the stationary permanent semi-hard magnet moves the movable permanent magnet to the second position. A magnetic axis of the movable permanent magnet is side by side with a magnetic axis of the stationary permanent semi-hard magnet.

Methods and apparatus are described for self-alignment for wireless charging. In some implementations a method includes detecting a device to be charged by a wireless charger. The wireless charger includes a housing and a wireless power transmission coil that is movable within the housing. The method includes determining, by the wireless charger, a direction to move the wireless power transmission coil within the housing to improve alignment of the wireless power transmission coil with a wireless power receiving coil of the device to be charged. The method includes moving, by the wireless charger, the wireless power transmission coil within the housing in the determined direction to align the wireless power transmission coil improve alignment of the wireless power transmission coil with the wireless power receiving coil of the device to be charged.

Methods and apparatus are described for self-alignment for wireless charging. In some implementations a method includes detecting a device to be charged by a wireless charger. The wireless charger includes a housing and a wireless power transmission coil that is movable within the housing. The method includes determining, by the wireless charger, a direction to move the wireless power transmission coil within the housing to improve alignment of the wireless power transmission coil with a wireless power receiving coil of the device to be charged. The method includes moving, by the wireless charger, the wireless power transmission coil within the housing in the determined direction to align the wireless power transmission coil improve alignment of the wireless power transmission coil with the wireless power receiving coil of the device to be charged.

The embodiments disclose a pulsed power generator system that can include a cantilever comprising a cantilever tip disposed on a lower surface of a first end and a permanent magnet mounted on an upper surface of the first end, wherein the cantilever is connected to an electric circuit at a second end, an electromagnet generating a time varying periodic magnetic flux, wherein the magnetic flux interacts with the permanent magnet to generate a direction-changing mechanical force that drives oscillation in the cantilever, a conducting pad, disposed adjacent to the bottom surface of the first end of the cantilever and configured so that the cantilever tip can contact the conducting pad. An oscillation of the cantilever causes the cantilever tip to periodically contact the conducting pad forming an electrical switch suitable for pulse generation through the electric circuit.