研究性实验教学在材料学科人才培养中的应用和探索

Research-Based Experiment Teaching Method for the Talent Development in Material Science

以硫化钼二维结构的气相合成与光电探测应用为课题,在材料专业本科生中开展了研究性实验教学试点。参与课程的学生在教师引导下直面二维半导体材料的合成与应用,自主探索与相互协作相结合,通过气相沉积法成功制备了原子层厚度的硫化钼二维结构并组装成光电探测器,探究探测器在定功率变波长及定波长变功率光照下的光电响应行为。证明了硫化钼二维结构具有良好的可见光响应稳定性和毫秒级的响应速度,实现了良好的光电探测效果。研究性实验教学改变了传统实验教学尚未实验,结论已知的固有模式,将学科前沿问题融入实验教学过程,不预设答案,学生在课程中可充分发挥主观能动性。

The experimental teaching pilot is carried out among undergraduates majoring in materials with the project of vapor phase synthesis and photoelectric detection of 2D molybdenum sulfide structures,in order to promote talent training to keep up with the development of the discipline and social needs.The students involved in the project face on the cutting-edge scientific problems of material science.Guided by teachers,they explore the issue independently or in cooperation with other researchers.The two-dimensional structures of molybdenum sulfide are prepared by vapor deposition method and assembled in the photodetector.The photo-response behaviors of the as-fabricated detectors are also investigated exposure to incident lights of different wavelengths and intensities,revealing a good stability and millisecond response speed.The research experiment teaching endows subjective initiative of the undergraduate students in practice.They try to address the problems occur in the experiment independently,which triggers their interest in learning and creativity.Therefore,the integration of teaching and scientific research is realized in this project and these experiences will make them better adaptable to the society.