中国物理B ›› 2017, Vol. 26 ›› Issue (3): 38105-038105.doi: 10.1088/1674-1056/26/3/038105

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Improving self-assembly quality of colloidal crystal guided by statistical design of experiments

Yizhi Wu(吴以治), Xiaoliang Xu(许小亮), Haiming Zhang(张海明), Ling Liu(刘玲), Jichao Li(李继超), Dabao Yang(杨大宝)   

  1. 1 Department of Applied Physics, School of Science, Tianjin Polytechnic University, Tianjin 300387, China;
    2 Department of Physics, University of Science and Technology of China, Hefei 230026, China
  • 收稿日期:2016-12-04 修回日期:2016-12-22 出版日期:2017-03-05 发布日期:2017-03-05
  • 通讯作者: Yizhi Wu E-mail:wuyizhi@tjpu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11504264, 51501128, and 61274064).

Improving self-assembly quality of colloidal crystal guided by statistical design of experiments

Yizhi Wu(吴以治)1, Xiaoliang Xu(许小亮)2, Haiming Zhang(张海明)1, Ling Liu(刘玲)1, Jichao Li(李继超)1, Dabao Yang(杨大宝)1   

  1. 1 Department of Applied Physics, School of Science, Tianjin Polytechnic University, Tianjin 300387, China;
    2 Department of Physics, University of Science and Technology of China, Hefei 230026, China
  • Received:2016-12-04 Revised:2016-12-22 Online:2017-03-05 Published:2017-03-05
  • Contact: Yizhi Wu E-mail:wuyizhi@tjpu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11504264, 51501128, and 61274064).

摘要:

A versatile and reliable approach is created to fabricate wafer-scale colloidal crystal that consists of a monolayer of hexagonally close-packed polystyrene (PS) spheres. Making wafer-scale colloidal crystal is usually challenging, and it lacks a general theoretical guidance for experimental approaches. To obtain the optimal conditions for self-assembly, a systematic statistical design and analysis method is utilized here, which applies the pick-the-winner rule. This new method combines spin-coating and thermal treatment, and introduces a mixture of glycol and ethanol as a dispersion system to assist self-assembly. By controlling the parameters of self-assembly, we improve the quality of colloidal crystal and reduce the effect of noise on the experiment. To our best knowledge, we are first to pave this path to harvest colloidal crystals. Importantly, a theoretical analysis using an energy landscape base on our process is also developed to provide insights into the PS spheres' self-assembly.

关键词: self-assembly, colloidal crystal, polystyrene spheres, statistical design

Abstract:

A versatile and reliable approach is created to fabricate wafer-scale colloidal crystal that consists of a monolayer of hexagonally close-packed polystyrene (PS) spheres. Making wafer-scale colloidal crystal is usually challenging, and it lacks a general theoretical guidance for experimental approaches. To obtain the optimal conditions for self-assembly, a systematic statistical design and analysis method is utilized here, which applies the pick-the-winner rule. This new method combines spin-coating and thermal treatment, and introduces a mixture of glycol and ethanol as a dispersion system to assist self-assembly. By controlling the parameters of self-assembly, we improve the quality of colloidal crystal and reduce the effect of noise on the experiment. To our best knowledge, we are first to pave this path to harvest colloidal crystals. Importantly, a theoretical analysis using an energy landscape base on our process is also developed to provide insights into the PS spheres' self-assembly.

Key words: self-assembly, colloidal crystal, polystyrene spheres, statistical design

中图分类号:  (Self-assembly)

  • 81.16.Dn
81.07.-b (Nanoscale materials and structures: fabrication and characterization) 87.15.nt (Crystallization) 87.15.A- (Theory, modeling, and computer simulation)