基于离子交换聚合物--金属复合结构的柔性致动器研究

Ion-exchange polymer-metal composite （IPMC） is a new electroactive material. It has large deformation and high force weight ratio in the presence of low voltage （〈1.5 V）. In this study a soft actuator known as artificial muscle based on IPMC was prepared. The IPMC actuator is composed of a perfluorinated ion-exchange membrane and platinum plated on both sides of the membrane by chemical means. Experiences and some key points are introduced in preparation of the IPMC. Electromechanical behaviors of the actuator are investigated, Factors related to the actuator performance are discussed.     

少数民族汉语教学的性质及特点分析

少数民族区域以内的汉语教学,仍存在特有的认知误差。少数民族预设的汉语授课,应当明晰它的本源属性、汉语授课表征的特性。只有这样,才能变更旧有的认知观念,接纳关联科目的新颖思路。汉语教学架构之下的授课,应被看成带有系统特性的认知工程。明辨了汉语教学范畴之内的真实状态,能够助推授课水准日趋升高,为同学供应最佳的认知路径。