二维胶体晶体衍射图样的研究及其衬底形变测量  

Study on diffraction patterns of 2D colloidal crystals and substrate deformation

作　　者：孔丽晶 杨毅[1] 吴本畅 蔡柄煌 刘启霖 陈柏逸 李艾华 郑晅丽 高娜 KONG Lijing;YANG Yi;WU Benchang;CAI Binghuang;LIU Qilin;CHEN Baiyi;LI Aihua;ZHENG Xuanli;GAO Na(College of Physical Science and Technology,Xiamen University,Xiamen 361005,China;Physics Experiment Teaching Center,Xiamen University,Xiamen 361005,China)

机构地区：[1]厦门大学物理科学与技术学院,福建厦门361005 [2]厦门大学物理实验教学中心,福建厦门361005

出　　处：《物理实验》2024年第10期13-21,共9页Physics Experimentation

基　　金：国家自然科学基金青年项目(No.62304188);教育部高等学校大学物理课程教学指导委员会高等学校教学研究项目(No.DWJZW202223hd)。

摘　　要：以柔性衬底上自组装的聚苯乙烯微球阵列为研究对象,基于光学衍射方法与晶体结构理论,设计了积木式胶体晶体衍射图样演示及其衬底形变测量装置.该装置不仅可以直观地展现微球排列方式与衍射图样的对应关系,实现宏观衍射图样到微观晶格结构的知识过渡,而且还可以实现衬底形变测量,实验结果与理论预测符合良好.另外,该装置具有可视化、测量精度高、易操作的特点,可作为拓展实验应用于本科实验教学.A polystyrene microsphere array self-assembled on a flexible substrate was taken as the research object,a building-block-like device was designed to demonstrate the arrangement related diffraction patterns and measure the deformation of its substrate by using theories of the optical diffraction method and crystal structures.The device could realize showing intuitively the relationship between the arrangement of microspheres and the diffraction patterns,and also realized the knowledge transition from macroscopic diffraction patterns to microscopic lattice structures.And the deformation of its substrate could be estimated according to period,the experimental results were in good agreement with the theoretical predictions.The device had the advantages of visualization,high measurement accuracy,and easy operation.It could be the extension for the undergraduate experiment teaching.

关 键 词：胶体晶体 衍射 柔性衬底 二维布拉维格子 

分 类 号：O436.1[机械工程—光学工程] O343[理学—光学]