Layer-by-Layer Assembly of Free-Standing Nanofilms by Controlled Rolling

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A water surface not only provides a habitat to many living organisms but also opens up new possibilities to develop state-of-the-art technologies. Here, we show a technology for the layer-by-layer assembly of free-standing nanofilms by controlled rolling. The water surface is exploited as an ideal platform for rolling a nanofilm, allowing adhesion control and frictionless feeding. The nanofilm floating on the water surface is attached to a tube by van der Waals adhesion and is rolled up by the rotation of the tube. This method can assemble diverse film materials including metals, polymers, and two-dimensional materials, with an easy control of the number of layers. Furthermore, heterogeneous and spiral structures of the nanofilm are achieved. Various applications such as a stretchable tubular electrode, an electroactive polymer tube actuator, and a superelastic nanofilm tube are demonstrated. We believe this work can potentially lead to a breakthrough in the nanofilm assembly processes.
Publisher
AMER CHEMICAL SOC
Issue Date
2018-05
Language
English
Article Type
Article
Keywords

ADHESION; WATER; SURFACE; FABRICATION; NANOWIRES; NANOTUBES; POLYMERS; BEHAVIOR; DEVICES; ENERGY

Citation

LANGMUIR, v.34, no.20, pp.5831 - 5836

ISSN
0743-7463
DOI
10.1021/acs.langmuir.8b01063
URI
http://hdl.handle.net/10203/242623
Appears in Collection
ME-Journal Papers(저널논문)
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