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ۼ : 18-03-02 16:51
[2018.02]ڹ ĸ ̿ ΰ
 ۾ :
ȸ : 367  

True Low-Power Self-Locking Soft Actuators

Seung Jae Kim, Onnuri Kim and Moon Jeong Park

 

Ĺ Ѹ üκ Ǵ ȯ ȭ Ī Ư Ǻȭ Ͽ ̵ ִ ߿͸ Ͽ. Ȱ (LEAP) LEAP ߿ʹ ߿Ϳ Ͽ , 250% Ÿ 3 ſ ü ø ִ. ̷ο LEAP ߿ ʴ ǿ, ġ ĸó ִٴ ̴. ڵ - LEAP ߿ʹ 2.0% ̻ ۵ ϸ, 3 V ۵ п 15 ü ϴµ 6.2 mWh/cm2 ҺѴ. ̷ ΰ , ũ ̽ پ Ʈ κ а ִ.

 

Natural double-layered structures observed in living organisms are known to exhibit asymmetric volume changes with environmental triggers. Typical examples are natural roots of plants, which show unique self-organized bending behavior in response to environmental stimuli. Here, we report light- and electro-active polymer-based (LEAP) actuators with a double-layered structure. The LEAP actuators exhibited an improvement of 250% in displacement and hold an object 3 times heavier as compared to that in the case of conventional electro-active polymer actuators. Most interestingly, the bending motion of the LEAP actuators could be effectively locked for a few tens of minutes even in the absence of a power supply. Further, the self-locking LEAP actuators showed a large and reversible bending strain of more than 2.0% and required only 6.2 mWh/cm2 of energy to hold an object for 15 min at an operating voltage of 3 V. These novel self-locking soft actuators should find wide applicability in artificial muscles, biomedical microdevices, and various innovative soft robot technologies.


 
 

Total 83
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