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Issue 83, 2016
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Robust superhydrophilic patterning of superhydrophobic ormosil surfaces for high-throughput on-chip screening applications

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Abstract

This article describes a facile method for the preparation of two-dimensionally patterned superhydrophobic hybrid coatings with controlled wettability. Superhydrophobic coatings were deposited from nanostructured organically modified silica (ormosil) colloids that were synthesized via a simple sol–gel method. On the defined areas of the superhydrophobic ormosil coatings, stable wetted micropatterns were produced using Ultraviolet/Ozone (UV/O) treatment which modifies the surface chemistry from hydrophobic to hydrophilic without changing the surface morphology. The degree of wettability can be precisely controlled depending on the UV/O exposure duration; extremely wetted spots with water contact angle (WCA) of nearly 0° can be obtained. Furthermore, we demonstrated high-throughput biomolecular adsorption and mixing using the superhydrophilic patterns. The proposed superhydrophilic-patterned nanostructured ormosil surfaces with their simple preparation, robust and controlled wettability as well as adaptability on flexible substrates, hold great potential for biomedical and chemical on-chip analysis.

Graphical abstract: Robust superhydrophilic patterning of superhydrophobic ormosil surfaces for high-throughput on-chip screening applications

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Publication details

The article was received on 03 Aug 2016, accepted on 16 Aug 2016 and first published on 17 Aug 2016


Article type: Paper
DOI: 10.1039/C6RA19669A
Citation: RSC Adv., 2016,6, 80049-80054
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    Robust superhydrophilic patterning of superhydrophobic ormosil surfaces for high-throughput on-chip screening applications

    P. Beyazkilic, U. Tuvshindorj, A. Yildirim, C. Elbuken and M. Bayindir, RSC Adv., 2016, 6, 80049
    DOI: 10.1039/C6RA19669A

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