An actuator driven by a smart material device and suitable for use as an actuator, energy capture device, or sensor, having an enclosed compensator, potting material, at least one actuating arm, and two mechanical webs and a movable supporting member adapted such that application of a suitable electric potential causes a change in shape of the smart material device, thereby flexing the mechanical webs and causing movement of the actuating arm. As an energy capture device or sensor, external motion causes the actuating arm to move, thereby causing the smart material device to generate recoverable electrical energy or an electric signal indicating motion.