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A New Haptic Actuator based on Cellulose Acetate  

Kim, Sang-Youn (Department of Computer Engineering, Korea University of Technology and Education)
Kim, Dong-Gu (Department of Mechanical Engineering, Inha Univ.)
Yun, Sung-Ryul (Department of Mechanical Engineering, UCLA)
Kyung, Ki-Uk (ETRI)
Kim, Jae-Hwan (Department of Mechanical Engineering, Inha Univ.)
Publication Information
Journal of the Korean Society for Precision Engineering / v.28, no.11, 2011 , pp. 1259-1264 More about this Journal
Abstract
This paper suggests a new film-type haptic actuator based on cellulose acetate electro-active paper. Conventional tiny haptic actuators in mobile devices can create vibrotactile sensation at only near resonant frequency. The strategy of operating near the resonant frequency, however, brought a new issue for creating vibrotactile sensation which can be strong enough to feel in arbitrary frequency. Another problem is that the size of the conventional actuator is not small enough to be embedded into slim mobile devices. In order to achieve these issues, we propose a thin and tiny actuator based on a cellulose acetate material charged with an electric potential. The motion of the actuator can be a concave or a convex by controlling a polarity of both charged membranes and the actuator performance can be modulated by increasing level of biased electric potential.
Keywords
Haptic Actuator; Vibrotactile Sensation; Mobile Devices;
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