Song, Kahye Cha, Youngsu 2024-01-19T23:00:52Z 2024-01-19T23:00:52Z 2021-09-03 2018-05 1996-1944 https://pubs.kist.re.kr/handle/201004/121433 In this study, we introduce Fe3O4-silicone flexible composite actuators fabricated by combining silicone and iron oxide particles. The actuators exploit the flexibility of silicone and the electric conductivity of iron oxide particles. These actuators are activated by electrostatic force using the properties of the metal particles. Herein, we investigate the characteristic changes in actuation performance by increasing the concentration of iron oxide from 1% to 20%. The developed flexible actuators exhibit a resonant frequency near 3 Hz and their actuation amplitudes increase with increasing input voltage. We found that the actuator can move well at metal particle concentrations >2.5%. We also studied the changes in actuation behavior, depending on the portion of the Fe3O4-silicone in the length. Overall, we experimentally analyzed the characteristics of the newly proposed metal particle-silicone composite actuators. English MDPI DIELECTRIC ELASTOMERS SOFT Fe3O4-Silicone Mixture as Flexible Actuator Article 10.3390/ma11050753 1 MATERIALS, v.11, no.5 MATERIALS 11 5 scie scopus 000434711700103 2-s2.0-85046623716 Chemistry, Physical Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Physics, Applied Physics, Condensed Matter Chemistry Materials Science Metallurgy & Metallurgical Engineering Physics Article DIELECTRIC ELASTOMERS SOFT soft active materials flexible actuator electrostatic force