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

Pinar Beyazkilic, Urandelger Tuvshindorj, Adem Yildirim, Caglar Elbuken, Mehmet Bayindir

Research output: Contribution to journalArticle

5 Citations (Scopus)

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.

Original languageEnglish (US)
Pages (from-to)80049-80054
Number of pages6
JournalRSC Advances
Volume6
Issue number83
DOIs
StatePublished - Jan 1 2016
Externally publishedYes

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Silicon Dioxide
Wetting
Screening
Ozone
Silica
Throughput
Coatings
Colloids
Surface chemistry
Sol-gel process
Contact angle
Surface morphology
Adsorption
Water
Substrates

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Robust superhydrophilic patterning of superhydrophobic ormosil surfaces for high-throughput on-chip screening applications. / Beyazkilic, Pinar; Tuvshindorj, Urandelger; Yildirim, Adem; Elbuken, Caglar; Bayindir, Mehmet.

In: RSC Advances, Vol. 6, No. 83, 01.01.2016, p. 80049-80054.

Research output: Contribution to journalArticle

Beyazkilic, Pinar ; Tuvshindorj, Urandelger ; Yildirim, Adem ; Elbuken, Caglar ; Bayindir, Mehmet. / Robust superhydrophilic patterning of superhydrophobic ormosil surfaces for high-throughput on-chip screening applications. In: RSC Advances. 2016 ; Vol. 6, No. 83. pp. 80049-80054.
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