| 초록 |
Recently, electroactive polymer (EAP) actuators are becoming important components of soft robotics owing to their lightness and large mechanical deformation under a give voltage. However, continuous power consumption for maintaining the actuation motion of EAP actuators appeared to be a fundamental disadvantage to develop low-power actuators. Here, we resolve this long-standing problem by developing a dual sensitive actuator with double-layered structure based on light- and electro-active polymer (LEAP). The LEAP actuators showed 250% greater displacement and can hold an object three times heavier than those of the conventional EAP actuators. Most importantly, the motion of the LEAP actuators can be effectively locked even after removing power source. The LEAP actuator consumed only 6.2 mWh/cm2 to maintain 2.0% of bending strain for 15 min, suggesting a new avenue to designing low-power polymer actuators. |
