Light driven actuator


An actuator that uses light as control signal or energy source.

After the development of photostrictive materials, various light driven actuators have been proposed. These actuators have simple structures and can be driven by wireless. A motor is proposed that utilizes the spin realignment effect, in which a magnetic material absorbs light and the resulting heat changes the direction of magnetization reversibly. Actuators utilizing thermal expansion, and exploiting polymer photochemical reactions, are also studied.


[Related Terms]
Photostrictive effect