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학술지 High-Pressure Endurable Flexible Tactile Actuator based on Microstructured Dielectric Elastomer
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저자
표동범, 류세민, 경기욱, 윤성률, 권동수
발행일
201802
출처
Applied Physics Letters, v.112 no.6, pp.1-5
ISSN
0003-6951
출판사
American Institute of Physics (AIP)
DOI
https://dx.doi.org/10.1063/1.5016385
협약과제
18ZS1300, 주력 산업 고도화를 위한 지능형 상황인지 기반 기술 개발, 장병태
초록
We demonstrate a robust flexible tactile actuator that is capable of working under high external pressures. The tactile actuator is based on a pyramidal microstructured dielectric elastomer layer inducing variation in both mechanical and dielectric properties. The vibrational performance of the actuator can be modulated by changing the geometric parameter of the microstructures. We evaluated the performance of the actuator under high-pressure loads up to 25 kPa, which is over the typical range of pressure applied when humans touch or manipulate objects. Due to the benefit of nonlinearity of the pyramidal structure, the actuator could maintain high mechanical output under various external pressures in the frequency range of 100-200 Hz, which is the most sensitive to vibration acceleration for human finger pads. The responses are not only fast, reversible, and highly durable under consecutive cyclic operations, but also large enough to impart perceivable vibrations for haptic feedback on practical wearable device applications.
KSP 제안 키워드
Dielectric elastomer(DE), Dielectric properties, Frequency Range, Geometric parameter, Haptic Feedback, Human finger, Pressure loads, Pyramidal structure, Vibration acceleration, Wearable device, device applications