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

Ya-Huei Chang; Nga Yu Hau; Chang Liu; Yu-Ting Huang; Chien-Cheng Li; Kaimin Shih; Shien-Ping Feng

doi:10.1039/C4NR05261G

You do not have JavaScript enabled. Please enable JavaScript to access the full features of the site or access our non-JavaScript page.

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

Ya-Huei Chang,^a Nga Yu Hau,^a Chang Liu,^a Yu-Ting Huang,^a Chien-Cheng Li,^a Kaimin Shih^b and Shien-Ping Feng*^a

Author affiliations

* Corresponding authors

^a Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Rd, Hong Kong
E-mail: hpfeng@hku.hk

^b Department of Civil Engineering, The University of Hong Kong, Pokfulam Rd, Hong Kong

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.

Download options Please wait...

Supplementary files

Article information

DOI: https://doi.org/10.1039/C4NR05261G
Article type: Paper
Submitted: 10 Sep 2014
Accepted: 23 Oct 2014
First published: 30 Oct 2014

Download Citation

Nanoscale, 2014,6, 15309-15315

Author version available

Download author version (PDF)

Permissions

Request permissions

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

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Social activity

Fetching data from CrossRef.
This may take some time to load.

Nanoscale