亚微米微球三维有序阵列的组装技术研究

Assembly of sub-micrometer spheres into 3D periodic structure

以硅酸乙酯为原料在乙醇 氨介质中制备了单分散性良好的亚微米级二氧化硅微球 ,采用电泳辅助沉降技术实现了二氧化硅微球三维有序阵列的组装 ,获得了规整度较高的二氧化硅微球面心立方阵列 ,并与其他组装方法的特点和适用范围进行了比较 ,为不同粒径 (从微米至亚微米范围 )

In this paper, monodisperse silica spheres with diameters ranging from 100～700nm are synthesized following the stober method. By using electrophoretic aided sedimentation, silica colloidal spheres with different diameters are self assembled into long range ordered 3D arrays. The SEM was employed for structure and morphology characterization. Three other assembly methods including gravitational sedimentation, centrifugation and filtration were compared with electrophoretic aided sedimentation.