APPLICATION TO ACTUATORS WITH LOW ELECTRIC OPERATION USING ELECTRICSTRICTION OF FULLERENOL DOPED PUE

本文的研究结果总结如下：1。发现了类似聚合物的聚氨酯弹性体（PUE）薄膜具有电致伸缩效应。我们建议将PUE薄膜的电致伸缩效应应用于执行器等移动设备。所述驱动器是由PUE薄膜和两种不同厚度的金属电极制成的单晶型驱动器。由于这些致动器工作在超过1 KV的高压下，我们通过在PUE中掺杂C_<60>衍生物（富勒烯醇）来控制薄膜的结构，从而使致动器可以在低电压下工作。富勒烯醇掺杂PUE致动器和未掺杂PUE致动器的弯曲度在电场的平方处变化。同时，弯曲与电极的厚度有关，当金属电极变薄至200 nm时，所有样品都向阴极电极方向弯曲，与金属材料无关。它们表现出极性效应。富勒烯醇掺杂致动器的弯曲度比未掺杂致动器大，工作电压也小。富勒烯醇掺杂致动器的力与电场成正比增加。很明显，这些致动器的诱导力在很大程度上取决于PUE薄膜的厚度。结果表明，富勒烯醇掺杂的PUE薄膜具有压电效应。

The results of this research are summarized as follows.1. The polyurethane elastomer (PUE) films similar to polymer gets have been found to show the electrostriction effect. We proposed the application to moving devices such as an actuator utilizing the electrostriction effect of PUE films.2. The actuators are monomorph type fabricated by PUE film and two kinds of metal electrodes of the different thickness. Since these actuators work at high voltage more than 1 KV, we controlled the structure of films by doping C_<60> derivatives (fullerenol) into PUE so that the actuators could operate under a low voltage.3. The bends of fullerenol doped PUE actuators and non-doped PUE actuators varied at the square of an electric field. Also, the bend depends on thickness of electrodes, when the metal electrode were thinning until 200 nm, all of samples were bent in the direction of cathode electrode independent of metal materials. They showed polarity effect.4. The bends of fullerenol doped actuators were larger than that of non-doped actuators and the working voltage was also small.5. The force of fullerenol doped actuators increased in proportion to an electric field. It was clear that the induced forces of these actuators strongly depend on the thickness of PUE films. It was cleared that the fullerenol doped PUE films appeared the piezoelectric effect.