<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Changes in nanostructure morphology and size may result in very different surface wettability. In this research, the impact of different morphological parameters on the wetting dynamics of ZnO nanostructured layers is studied. Six different morphologies are chosen to determine the specific wetting processes of ZnO nanostructures: nanoneedles, small diameter rods, large diameter rods, nanotubes, nanoplates, and plain thin films. Wetting dynamics is investigated using conventional sessile drop technique and a novel approach based on electrochemical impedance spectroscopy. The results show that the surface of nanostructured ZnO thin films exhibits both hydrophilic and hydrophobic wetting behaviour, depending on nanostructure form, size, and orientation. ZnO nanostructure arrays are a promising platform for electrochemical and optical sensing in aqueous solutions. The full and effective use of the sensor working surface can be ensured only under the condition of complete wetting of the nanostructured layer. Therefore, it is important to take into account the peculiarities of the wetting process of a specific morphology of nanostructures.</p>
</abstract>

Changes in nanostructure morphology and size may result in very different surface wettability. In this research, the impact of different morphological parameters on the wetting dynamics of ZnO nanostructured layers is studied. Six different morphologies are chosen to determine the specific wetting processes of ZnO nanostructures: nanoneedles, small diameter rods, large diameter rods, nanotubes, nanoplates, and plain thin films. Wetting dynamics is investigated using conventional sessile drop technique and a novel approach based on electrochemical impedance spectroscopy. The results show that the surface of nanostructured ZnO thin films exhibits both hydrophilic and hydrophobic wetting behaviour, depending on nanostructure form, size, and orientation. ZnO nanostructure arrays are a promising platform for electrochemical and optical sensing in aqueous solutions. The full and effective use of the sensor working surface can be ensured only under the condition of complete wetting of the nanostructured layer. Therefore, it is important to take into account the peculiarities of the wetting process of a specific morphology of nanostructures.

Morphology Influence on Wettability and Wetting Dynamics of ZnO Nanostructure Arrays

G. Liberts’ Innovative Microscopy Centre, Department of Technology, Institute of Life Sciences and Technology

Institute of Solid State Physics, University of Latvia

Latvian Journal of Physics and Technical Sciences

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Changes in nanostructure morphology and size may result in very different surface wettability. In this research, the impact of different morphological...

Morphology Influence on Wettability and Wetting Dynamics of ZnO Nanostructure Arrays

Published Online: Feb 02, 2022

Page range: 30 - 43

DOI: https://doi.org/10.2478/lpts-2022-0004

Keywords
Electrochemical impedance spectroscopy, nanostructures, water contact angle, wettability, ZnO

© 2022 V. Gerbreders et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Morphology Influence on Wettability and Wetting Dynamics of ZnO Nanostructure Arrays

Published Online: Feb 02, 2022

Page range: 30 - 43

DOI: https://doi.org/10.2478/lpts-2022-0004

KeywordsElectrochemical impedance spectroscopy, nanostructures, water contact angle, wettability, ZnO

© 2022 V. Gerbreders et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
Electrochemical impedance spectroscopy, nanostructures, water contact angle, wettability, ZnO