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

6 Scopus citations

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 - 2016

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Fingerprint Dive into the research topics of 'Robust superhydrophilic patterning of superhydrophobic ormosil surfaces for high-throughput on-chip screening applications'. Together they form a unique fingerprint.

  • Cite this