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Issue 24, 2014
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A short-range ordered–disordered transition of a NiOOH/Ni(OH)2 pair induces switchable wettability

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Abstract

By virtue of its amorphous structure with a short-range order feature, the inorganic nanoporous nickel oxyhydroxide (NiOOH) can reversibly and rapidly switch wettability by alternate treatments of environmental chamber (superhydrophobic) and UV/ozone (superhydrophilic). The switchable mechanism of the NiOOH/Ni(OH)2 pair arising from its exceptional intrinsic short-range order–disorder transition together with chemical composition change is highlighted for the first time, which significantly differs from the current stimuli-responsive materials. This distinct multifunctional thin film not only possesses reversible wettability but also is optically patternable/repairable and electrically conductive, which could be applicable in the manufacturing of various micro- and nanostructures. We demonstrate this potential in the rewritable two-dimensional (2D) microfluidic channels and wetting-contrast enhanced selective electroplating.

Graphical abstract: A short-range ordered–disordered transition of a NiOOH/Ni(OH)2 pair induces switchable wettability

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Supplementary files

Article information


Submitted
10 Sep 2014
Accepted
23 Oct 2014
First published
30 Oct 2014

Nanoscale, 2014,6, 15309-15315
Article type
Paper
Author version available

A short-range ordered–disordered transition of a NiOOH/Ni(OH)2 pair induces switchable wettability

Y. Chang, N. Y. Hau, C. Liu, Y. Huang, C. Li, K. Shih and S. Feng, Nanoscale, 2014, 6, 15309
DOI: 10.1039/C4NR05261G

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