Microelectromechanical structures and switches employing movable actuators wherein particular ones of which move perpendicular to an underlying substrate and particular others move in a direction substantially parallel to the underlying substrate thereby providing more positive actuation. A pattern of a gate line, a gate electrode, a common electrode and a common electrode line is formed by patterning a first transparent conductive film and a first metal film formed successively on a transparent substrate. At least four adjacent ball pads are on the bottom surface, arranged in a first two-row array along a first direction and a second direction. The data layer of the station circuit in source mode disassembles a source packet into one or more source parcels and sends the one or more source parcels to the transport layer. The part table database stores a parts list for managing the parts used for the unit. The structure 12 comprises an array of upwardly extending mutually spaced pointed claw-like teeth 14 for digging into bone to which the implant is to be attached, and a network of pores 16 underlying the array and communicating with the exterior of the surface via openings 18 between the teeth, the pores allowing for the circulation of nutrients to promote bone growth.