期刊
ADVANCED POWDER TECHNOLOGY
卷 25, 期 2, 页码 811-815出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apt.2014.01.013
关键词
Self-organization; Au network pattern; Convective self-assembly; Template-free fabrication; Transparent conductive film
资金
- Japan Society for the Promotion of Science (JSPS) [18004]
- Mizuho Foundation for the Promotion of Sciences
- [23686109]
- Grants-in-Aid for Scientific Research [23686109] Funding Source: KAKEN
Microwire networks composed of noble metal particles are promising for the use of transparent conductive films. Bottom-up approaches can offer a route to establishing a fabrication technique that is robust and cost-effective, and template-assisted self-assembly techniques are widely used. However, they require additional processes to prepare templates and generally suffer from the difficulty in a large-scale fabrication. A template-free technique thus waits to be developed. In the present study, we explore a template free technique to fabricate colloidal networks of Au nanoparticles. We combine the convective self-assembly method with a liquid-level manipulation scheme in which the suspension is periodically pumped out. By using the technique, we successfully fabricate stripe, grid, and triangle patterns with controlled periodicity and examine the relationship between operation parameters and the resultant structures. We then measure the transparency and conductivity of a grid pattern to demonstrate the property as the transparent conductive film. (C) 2014 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.
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