Abstract: According to an embodiment of the present invention, a data storage device comprising a motor having a stator is disclosed. The stator may include a substrate having a first surface and a second surface opposite to the first surface; and a n-phase winding arrangement having n phase windings; wherein each phase winding comprises m flat fractional-pitch coils arranged on the first surface of the substrate such that the coils are spaced apart uniformly along a closed loop and connected in series; wherein each coil together with an angular section of the substrate between the coil and an adjacent coil of the same phase winding defines a stator pole-pair; and wherein m is an integer larger than 1.

Abstract: According to an embodiment of the present invention, a data storage device comprising a motor having a stator is disclosed. The stator may include a substrate having a first surface and a second surface opposite to the first surface; and a n-phase winding arrangement having n phase windings; wherein each phase winding comprises m flat fractional-pitch coils arranged on the first surface of the substrate such that the coils are spaced apart uniformly along a closed loop and connected in series; wherein each coil together with an angular section of the substrate between the coil and an adjacent coil of the same phase winding defines a stator pole-pair; and wherein m is an integer larger than 1.

Abstract: An electrostatic microactuator for a slider in a disc drive is characterised in that it is formed from a single crystal silicon wafer. This provides a microactuator that has very low parasitic capacitance, virtually no mechanical or thermal creep, or mismatch problems as may occur when parts are separately fabricated. It also allows for efficient mass production by allowing for many of the microactuators to be simultaneously formed from the single crystal silicon wafer. The microactuator comprises a first (stationary) part (22) for attachment to a flexure of a head positioning system in a disc drive and a second (movable) part (24) to which a slider is attachable, which is pivotally coupled (42, 44) to the first part. The first and second parts include elongate strips (30, 32) which are interdigitated to provide comb electrodes.