A cylinder type plunger


A compact cylinder type device with multi-wound or multi-folded PPy tape actuator.

Any displacement and force can be achieved by adjusting the number of PPy tape layers.


Out-of-plane displacement by two-dimensional actuation of circular PPy film.

Displacement and force can be tailored by changing diameter and the number of the round PPy, respectively.
Multi-wound PPy actuator
Artificial fingers



The artificial fingers can be bent freely to mimic fingers because actuators are placed similarly to finger muscles.
　　A ring of flexible and tough PPy film can be fixed by pins. A device with multi-layer PPy film gives appropriate force.
Artificial muscle cell
　　　　Artificial Finger

　　A newly developed flexible and tough PPy film enables to fabricate an artificial finger with multi-wound actuator.