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Development of an Array-Type Flexible Tactile Sensor Using PVDF and Flexible Circuitry
Tae-KyuKwon,Kee-HoYu,Myung-JongYun 한국센서학회 2002 센서학회지 Vol.11 No.4
This paper represents the development of an array-type flexible tactile sensor using PVDF (polyvinylidene fluoride) film and flexible circuitry. The tactile sensor which has 8×8 taxels is made by using PVDF film and FPC(flexible printed circuit) technique. Experimental results on static and dynamic properties are obtained by applying arbitrary forces and frequencies generated by the shaker. In the static characteristics, the threshold and the linearity of the sensor are investigated. Also dynamic response of the sensor subjected to the variable frequencies is examined. The signals of a contact force to the tactile sensor are sensed and processed in the DSP system in which the signals are digitalized and filtered. Finally, the signals are integrated for taking the force profile. The processed signals of the outputs of the sensor are visualized on a personal computer, the shape and force distribution of the contacted object are obtained using two and three-dimensional image in real time. The reasonable performance for the detection of contact state is verified through the experiment.
연속 ECR-CVD 조업하에 RF-magnetron-sputter의 싸이클조업을 통해 PET위에 올려진 구리박막의 특성
명종윤,전법주,변동진,이중기,Myung JongYun,Jeon Bupju,Byun Dongjin,Lee Joongkee 한국재료학회 2005 한국재료학회지 Vol.15 No.7
Preparation of copper film on PET substrate was carried out by cyclic operation of RF-magnetronsputtering under continuous operation of ECR-CVD. The purpose of this study is aimed to an increase in deposition rate with keeping excellent adhesion between copper film and PET. In order to optimize the sputtering time under continuous ECR-CVD, cyclic operation concept is employed. By changing parameters of cyclic operation such as split of e and cycle time of A, the characteristics and thickness of the deposited copper film are controlled. As $\theta$ value increase, film thickness could confirm to increase and its surface resistivity value decreases. The highest adhesive strength appears at $\theta=0.33$ and cycle time of 30 min. The uniformity of copper film shows $5\%$ in our experimental range.