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http://dx.doi.org/10.7736/KSPE.2015.32.8.743

Fabrication and Characterization of Array Tactile Actuator Based on Cellulose Acetate  

Kim, Hyun-Chan (Department of Mechanical Engineering, Inha University)
Yun, Sungryl (Transparent Transducer and UX Creative Research Center, Electronics and Telecommunications Research Institute)
Ko, Hyun-U (Department of Mechanical Engineering, Inha University)
Kim, Jaehwan (Department of Mechanical Engineering, Inha University)
Publication Information
Journal of the Korean Society for Precision Engineering / v.32, no.8, 2015 , pp. 743-748 More about this Journal
Abstract
This paper reports the enhanced fabrication and characterization of a $3{\times}3$ array tactile actuator composed of cellulose acetate. The array tactile actuator, with dimensions of $15{\times}15{\times}1mm^3$, consists of 9 pillar-supported cells made from a cellulose-acetate molding. The fabrication process and performance test along with the results for the suggested actuator are explained. To improve the cell-array fabrication, a laser cut was adopted after the molding process. The displacement of the unit cell increased the input voltage and frequency. Various top masses are added onto the actuator to mimic the touch force, and the acceleration of the actuator is measured under actuation. When 2 kV is applied to the actuator, the maximum acceleration is 0.64 g, which is above the vibrotactile threshold. The actuation mechanism is associated with the electrostatic force between the top and bottom electrodes.
Keywords
Array tactile actuator; Cellulose acetate; Molding technique; Vibrotactile threshold;
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Times Cited By KSCI : 2  (Citation Analysis)
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