Title :

Nanotechnology to improve the performances of hydrodynamic surfaces

Author(s) :

Alshehri, Ali Ahmed [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - Département Opto-Acousto-Électronique - UMR 8520 [IEMN-DOAE]
Champagne, Philippe [Auteur]
Laboratoire des Matériaux Céramiques et Procédés Associés - EA 2443 [LMCPA]
INSA Institut National des Sciences Appliquées Hauts-de-France [INSA Hauts-De-France]
Keirsbulck, Laurent [Auteur]
Laboratoire d'Automatique, de Mécanique et d'Informatique industrielles et Humaines - UMR 8201 [LAMIH]
Dogheche, El Hadj [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - Département Opto-Acousto-Électronique - UMR 8520 [IEMN-DOAE]

Journal title :

Coatings

Pages :

808

Publisher :

MDPI

Publication date :

2019-12-01

ISSN :

2079-6412

English keyword(s) :

"superhydrophobic surfaces"
"nanotechnology"
"nanorods"
"ZnO"
"water contact angle"
"sliding angle"
"sliding speed" "hydrodynamic surfaces"
"epoxy paint"

HAL domain(s) :

Sciences de l'ingénieur [physics]
Chimie
Sciences du Vivant [q-bio]

English abstract : [en]

ure continues to inspire scientists to adapt solutions in order to satisfy human needs, mainly in the maritime domain with metallic surface corrosion and its mechanical friction. In this research, the source of innovation ...
Show more >ure continues to inspire scientists to adapt solutions in order to satisfy human needs, mainly in the maritime domain with metallic surface corrosion and its mechanical friction. In this research, the source of innovation comes from the lotus leaf and its well-known super-hydrophobicity. In this study, we have investigated the lotus leaf as a model for a super-hydrophobic maritime surface. The hydrothermal technique, which is considered to be a simple, low-cost, and scalable coating method, is applied to create zinc oxide (ZnO) nanorods (NRs), and an evaporation method is used to apply octadecyltrimethoxysilane (ODS). We apply such eco-green coatings onto commercial epoxy paints. Superhydrophobic surfaces (SHS) are obtained on maritime aluminum substrates. The characterization of SHS indicates improved behavior of water droplets on the treated surface: higher water static contact angles (WCA) from 98° to more than 152° and reduced sliding angles (SA) from 46° to 7°. Sliding speeds (SS) have been largely raised from 54 in the epoxy case to 1300 mm·s^-1 after treatment. These results clearly demonstrate the real opportunity to apply ZnO-based nanomaterials onto existing commercial maritime coatings.Show less >

Language :

Anglais

Popular science :

Non

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL