Abstract: An imaging capsule, including a radiation source, a collimator that provides a collimated beam from the radiation source, a detector configured to detect particles resulting from X-ray fluorescence and/or Compton backscattering in response to the collimated beam, a motor to rotate the collimator and detector around an axle to scan a partial or full inner circumference of a user's colon with radiation, wherein the motor comprises a segmented commutator that is fed with a power signal via brush contacts; and wherein the motor provides a pulsed output signal based on mechanical switching of the segmented commutator on the brush contacts, providing an indication of the rotation angle of the motor as a function of time.

Abstract: An imaging capsule including, a radiation source, a collimator that blocks the emission of radiation from the radiation source except through one or more output columns, a shutter comprising one or more openings; wherein the shutter is rotatably coupled to the collimator to enable selecting at least two states; a closed state in which the shutter blocks the emission of radiation from the radiation source, and an open state in which the shutter does not block the emission of radiation, a motor configured to rotate the collimator and select the state of the shutter, a main power source configure to power the motor, a circuit that monitors a status of the main power source and instructs the motor to place the shutter in the closed state if power in the main power source is below a threshold value.

Abstract: A chuck that comprises a vacuum system, an upper surface, a groove and a flexible sealing element, wherein at least a bottom portion of the flexible sealing element is positioned within the groove, wherein each one of the groove and the flexible sealing element surrounds a region of the upper surface, wherein the vacuum system is configured to supply vacuum to the region of the upper surface and wherein the flexible sealing element is configured to move between a top position in which an upper portion of the flexible sealing element extends above the upper surface and between a bottom position in which the upper portion of the flexible sealing element does not extend above the upper surface.

Abstract: An implantable magnetically activated actuator suitable for causing distraction, compression/contraction and/or oscillation of body organs and/or bones, comprising: a hollow housing comprising rear and front ends; a rod movably disposed in the rear portion of said hollow housing; magnetic coupling means comprising static magnetic/ferromagnetic elements affixed along the inner wall of said hollow housing and movable magnetic/ferromagnetic elements affixed along said movable rod in proximity to said stationary magnetic/ferromagnetic elements; mechanical means for transferring reciprocating motion of said movable rod.

Abstract: A method and apparatus are described for cleaving a relatively thin semiconductor wafer for inspecting a target feature on a workface thereof by: producing, on a first lateral face of the semiconductor wafer, laterally of the workface on one side of the target feature, an indentation in alignment with the target feature; and inducing by impact, in a second lateral face of the semiconductor wafer, laterally of the workface on the opposite side of the target feature, a shock wave substantially in alignment with the target feature and the indentation on the first lateral face, to split the semiconductor wafer along a cleavage plane essentially coinciding with the target feature and the indentation.