Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 4, Issue 6, Pages 3184-3190Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am300526g
Keywords
colloid; convective self-assembly; vertical deposition; self-organization; template-free technique; stripe pattern
Funding
- MEXT
- Japan Society for the Promotion of Science (JSPS)
- Mizuho Foundation for the Promotion of Sciences
- Grants-in-Aid for Scientific Research [12J06026, 23686109] Funding Source: KAKEN
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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.
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