Electrically Controlled Bendable Actuator for Deformable Display

Abstract

Soft Actuator can result in responsive mechanical shape deformations by various stimulating stress such as thermal, magnetic, photonic and electroactive methods. Technical benefits of soft actuator can be used for soft robots, sensors and also for shaping deformable display as well.[1] In particular, electrically controlled actuator, in other words electroactive polymer acutator (EAP actuator), is highly desired for electronic device application including deformable bendable display. For large bending deformation, it is desired to obtain a high powered EAP by higher voltage or higher properties material synthesis. Also, much stronger bending deformating displacement or lower triggered electrical field can be approached by multilayered actautor stucture. [2-3]In this study, we studied detailed evatualtion of radius of curvature and bending displacement behaviors by multilayered EAP soft actuator system. For the molecualr polarization properties of EAP such as ferroelectric polymer, applying an electric field triggered strain and actuating properties generated with bending actuation was studied. From this experimental observation, we report higher powered stacked layered actuation with positive strain and compressing negative strain together and high bending displacement.(Fig 1)