Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.jcis.2011.07.015
Title: Enhanced super-hydrophobic and switching behavior of ZnO nanostructured surfaces prepared by simple solution - Immersion successive ionic layer adsorption and reaction process
Authors: Suresh Kumar, P.
Sundaramurthy, J.
Mangalaraj, D.
Nataraj, D.
Rajarathnam, D.
Srinivasan, M.P. 
Keywords: Anti-Reflective coating
Nanostructure
Switching behavior
Wettability
ZnO
Issue Date: 1-Nov-2011
Source: Suresh Kumar, P., Sundaramurthy, J., Mangalaraj, D., Nataraj, D., Rajarathnam, D., Srinivasan, M.P. (2011-11-01). Enhanced super-hydrophobic and switching behavior of ZnO nanostructured surfaces prepared by simple solution - Immersion successive ionic layer adsorption and reaction process. Journal of Colloid and Interface Science 363 (1) : 51-58. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jcis.2011.07.015
Abstract: A simple and cost-effective successive ionic layer adsorption and reaction (SILAR) method was adopted to fabricate hydrophobic ZnO nanostructured surfaces on transparent indium-tin oxide (ITO), glass and polyethylene terephthalate (PET) substrates. ZnO films deposited on different substrates show hierarchical structures like spindle, flower and spherical shape with diameters ranging from 30 to 300. nm. The photo-induced switching behaviors of ZnO film surfaces between hydrophobic and hydrophilic states were examined by water contact angle and X-ray photoelectron spectroscopy (XPS) analysis. ZnO nanostructured films had contact angles of ∼140° and 160° ± 2 on glass and PET substrates, respectively, exhibiting hydrophobic behavior without any surface modification or treatment. Upon exposure to ultraviolet (UV) illumination, the films showed hydrophilic behavior (contact angle: 15° ± 2), which upon low thermal stimuli revert back to its original hydrophobic nature. Such reversible and repeatable switching behaviors were observed upon cyclical exposure to ultraviolet radiation. These biomimetic ZnO surfaces exhibit good anti-reflective properties with lower reflectance of 9% for PET substrates. Thus, the present work is significant in terms of its potential application in switching devices, solar coatings and self-cleaning smart windows. © 2011 Elsevier Inc.
Source Title: Journal of Colloid and Interface Science
URI: http://scholarbank.nus.edu.sg/handle/10635/63846
ISSN: 00219797
DOI: 10.1016/j.jcis.2011.07.015
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

36
checked on Dec 7, 2017

WEB OF SCIENCETM
Citations

47
checked on Nov 22, 2017

Page view(s)

37
checked on Dec 10, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.