Quantitative power spectral density analysis of nano/microstructured Ni-Zn electrodeposit and its correlation with superhydrophobicity

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F23%3A00131400" target="_blank" >RIV/00216224:14310/23:00131400 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.tsf.2023.139917" target="_blank" >https://doi.org/10.1016/j.tsf.2023.139917</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.tsf.2023.139917" target="_blank" >10.1016/j.tsf.2023.139917</a>

Result language

angličtina

Original language name

Quantitative power spectral density analysis of nano/microstructured Ni-Zn electrodeposit and its correlation with superhydrophobicity

Original language description

This paper aims to establish a quantitative relationship between wettability and surface morphology. The wettability of surfaces is highly dependent on surface morphology, and this relationship will be explored using either conventional roughness parameters or power spectral density (PSD) derived parameters. To investigate the effect of surface morphology on wettability, various Ni-Zn coatings with different hierarchical surface morphologies were electrodeposited on copper substrates. The coatings exhibited hydrophobic behavior with apparent contact angles ranging from 105 degrees to 155 degrees, depending on the shape, size, and arrangement of their surface features. Although conventional roughness parameters like Sq and Spc influenced the wettability of the coatings, their absolute values could not accurately predict superhydrophobic behavior. Therefore, the PSD analysis was used as an alternative approach to predict the wettability behavior of the coatings by distinguishing between nano- and micro-features. The results revealed that a superhydrophobicity (SH) index could be obtained from the PSD model to predict superhydrophobic properties. Coatings with an SH index below 0.32 exhibited a contact angle greater than 150 degrees, regardless of their deposition parameters. The findings suggest that surface roughness plays a significant role in controlling the wettability of Ni-Zn coatings, and the SH index is a useful tool for predicting the superhydrophobic properties of these coatings.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Thin Solid Films

ISSN

0040-6090

e-ISSN

1879-2731

Volume of the periodical

779

Issue of the periodical within the volume

August

Country of publishing house

CH - SWITZERLAND

Number of pages

10

Pages from-to

1-10

UT code for WoS article

001031592100001

EID of the result in the Scopus database

2-s2.0-85163216380