Lee, Junseok Cha, Youngsu 2024-01-20T00:02:12Z 2024-01-20T00:02:12Z 2021-09-03 2017-12 0964-1726 https://pubs.kist.re.kr/handle/201004/122004 Out-of-plane actuators are made possible by the breaking of planar symmetry. In this paper, we present a thin-film out-of-plane electrostatic actuator for a flexible printed circuit board ( FPCB) that can be fabricated with a single step of the conventional manufacturing process. No other components are required for actuation except a single sheet of the FPCB, and it works based on the planar asymmetry resulting from asymmetrically patterned top and bottom electrodes on each side of the polyimide film. With the structural asymmetry, the application of a high voltage in the order of kilovolts results in the asymmetry of the electric fields and the body force density, which generates the bending moment that leads to macroscopic deformations. We applied the finite element method to examine the asymmetry induced by the difference in the electrodes. In the experiment, the displacement responses to step input and square wave input of various frequencies were analyzed. It was found that our actuator constitutes an underdamped system, exhibiting resonance characteristics. The maximum oscillatory amplitude was determined at resonance, and the relationship between the displacement and the applied voltage was investigated. English IOP PUBLISHING LTD SOFT FABRICATION ELASTOMERS ROBOTICS DESIGN Flexible printed circuit board actuators Article 10.1088/1361-665X/aa9557 1 SMART MATERIALS AND STRUCTURES, v.26, no.12 SMART MATERIALS AND STRUCTURES 26 12 scie scopus 000415060000002 2-s2.0-85034735063 Instruments & Instrumentation Materials Science, Multidisciplinary Instruments & Instrumentation Materials Science Article SOFT FABRICATION ELASTOMERS ROBOTICS DESIGN electrostatic actuators flexible printed circuit board thin-film acuators