Colloidal Stripe Pattern with Controlled Periodicity by Convective Self-Assembly with Liquid-Level Manipulation

被引:27
作者
Mino, Yasushi [1 ]
Watanabe, Satoshi [1 ]
Miyahara, Minoru T. [1 ]
机构
[1] Kyoto Univ, Dept Chem Engn, Nishikyo Ku, Kyoto 6158510, Japan
基金
日本学术振兴会;
关键词
colloid; convective self-assembly; vertical deposition; self-organization; template-free technique; stripe pattern; SILICON NANOWIRE; SOLAR-CELLS; CRYSTALS; ARRAYS; FABRICATION; LITHOGRAPHY; SURFACES; COATINGS; BANDGAP; NANOCRYSTALS;
D O I
10.1021/am300526g
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
We describe a template-free technique for arranging colloidal particles into a stripe pattern on a large scale. A simple liquid-level manipulation system was incorporated into the vertical-deposition convective self-assembly (CSA) technique. By periodically pumping a colloidal dispersion out of or into a reservoir to manipulate the liquid level, we successfully fabricated stripe patterns with various periodicities (i.e., line widths and spacings) that are unachievable with the normal CSA technique. We developed a simple model to predict the periodicity of the resultant colloidal stripes that enables the tailored fabrication of colloidal stripes with the desirable periodicity for a practical application. This technique has the advantages of versatility and scalability. By combining this technique with the two-step CSA technique (Mino et al., Langmuir 2011, 27(9), 5290-5295), we fabricated a large-sized colloidal grid network pattern of silver nanoparticles.
引用
收藏
页码:3184 / 3190
页数:7
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