Abstract
The purpose of this study is to develop a light-driven SMA actuator. The shape memory alloy (SMA) actuator has many features such as a dynamic displacement value and a large generative force. Driven by the light, the SMA actuator can be downsized and used in many specific environments. In the previous study, the operation was limited to one direction moving. The actuator for driving on both directions is fabricated by replacing the SMA wire to the SMA plate. However SMA plate actuator cannot generate restitution force. To design the actuator structure, driving condition was simulated. Attaching a copper film as bias, the SMA plate actuator can recover the deformation to the initial state. Furthermore, SMA gripping actuator was fabricated and evaluated experimentally.
