Robust superhydrophilic patterning of superhydrophobic ormosil surfaces for high-throughput on-chip screening applications
| Autor: | Urandelger Tuvshindorj, Pinar Beyazkilic, Caglar Elbuken, Adem Yildirim, Mehmet Bayindir |
|---|---|
| Přispěvatelé: | Bayındır, Mehmet |
| Rok vydání: | 2016 |
| Předmět: |
Exposure durations
Materials science Superhydrophobic coatings Water contact angle (WCA) General Chemical Engineering Hydrophobicity Wetting Nanotechnology 02 engineering and technology 010402 general chemistry medicine.disease_cause 01 natural sciences Ormosil Contact angle Colloid Adsorption Screening application Coatings Superhydrophilicity Sol-gels medicine Chemical analysis Sol-gel process Hydrophilicity Flexible substrate General Chemistry 021001 nanoscience & nanotechnology Surface chemistry Throughput 0104 chemical sciences Super-hydrophilic Organically modified silica 0210 nano-technology Exposure duration Ultraviolet Biomolecular adsorption |
| Zdroj: | RSC Advances |
| ISSN: | 2046-2069 |
| Popis: | 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 degrees 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|