Abstract: A demagnetization compensated magnetostrictive actuator includes a magnetostrictive displacement element and an excitation element responsive to an external signal for providing an applied magnetic field; it further includes a magnetic yoke configuration that encloses both the displacement and excitation elements, for providing a low magnetic reluctance path for the magnetic flux provided by the applied magnetic field.

Abstract: A demagnetization compensated deformable magnetostrictive mirror comprises an array of magnetostrictive actuators that are positioned between a continuous low magnetic reluctance yoke. A faceplate having a reflective surface and a substrate are both fabricated to receive the magnetic yoke's outer surface and are affixed thereto to be approximately perpendicular to the mirror's deformation axis.

Abstract: A focused optical input signal is applied to an optically absorbent wall portion of a supply nozzle 40 in a fluidic device to cause boundary layer separation of flow therein. The boundary layer separation turns the flow to achieve a desired output from the device.

Abstract: A piezoelectric fluidic power supply comprises two piezoelectric devices (30, 31) connected both electrically and fluidically. Each device has a movable piston end (26, 27) which extends into a corresponding fluid chamber (23, 24), each piston variably restricting fluid flow through its corresponding fluid chamber. The first piezoelectric device, responding to fluid pressure changes, acts as a power generating device (30). The second piezoelectric device, responding to the electric power flow of the power generating device acts as a cycle control device (31) by modulating the fluid pressure on the first device. This arrangement effects a cycling of the two pistons, consequently generating electric power. Such an arrangement provides integral fluidic feedback control with inherent impedance matching between the fluid and the piezoelectric components.