Dynamic Magnetic Oscillation of Micropillar Arrays with Collective and Rapid Response
발표자
문호준 (한양대학교)
연구책임자
위정재 (한양대학교)
공동저자
문호준 (한양대학교), 전지수 (한양대학교), 박재서 (한국표준과학연구원), 원수경 (California Institute of Technology), 박정은 (광주과학기술원), 구자현 (Apex Microdevices), 김준오 (한국표준과학연구원), 위정재 (한양대학교)
초록
내용
Magneto-responsive soft actuators offer a promising route to reconfigurable microstructures with dynamic motion under external magnetic fields. However, conventional viscoelastic soft materials suffer from slow mechanical relaxation, which limits deformation amplitude under rapidly varying magnetic stimuli. In this presentation, we demonstrate collective and rapid magnetic oscillations of micropillar arrays under a rotational magnetic field. The micropillars, composed of a soft elastomer embedded with magnetic particles, faithfully follow the applied rotation frequency without delay and maintain large deformation amplitudes even at high speeds. By programming the magnetization profile, magnetic field gradient, and anisotropic geometry, the micropillars exhibit diverse actuation modes, including bending, twisting, and torsion. Finally, collective oscillations translate microscale actuation into macroscale functions, enabling programmable fluid flow and walking soft robot locomotion.