Micro-nanostructured silicon based superomniphobic surfaces

Phuong Nhung Nguyen, Thi; Boukherroub, Rabah; Thomy, Vincent; Coffinier, Yannick

Type de document :

Article dans une revue scientifique: Article original

DOI :

10.1016/j.jcis.2013.10.065

Titre :

Micro-nanostructured silicon based superomniphobic surfaces

Auteur(s) :

Phuong Nhung Nguyen, Thi [Auteur]
Institut de Recherche Interdisciplinaire [Villeneuve d'Ascq] [IRI]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Boukherroub, Rabah [Auteur]

Institut de Recherche Interdisciplinaire [Villeneuve d'Ascq] [IRI]
Thomy, Vincent [Auteur]

Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Coffinier, Yannick [Auteur]

Institut de Recherche Interdisciplinaire [Villeneuve d'Ascq] [IRI]

Titre de la revue :

Journal of Colloid and Interface Science

Pagination :

280-288

Éditeur :

Elsevier

Date de publication :

2014

ISSN :

0021-9797

Discipline(s) HAL :

Sciences de l'ingénieur [physics]

Résumé en anglais : [en]

We report on the fabrication of silicon nanostructured superhydrophobic and superoleophobic surfaces also called "superomniphobic" surfaces. For this purpose, silicon interfaces with different surface morphologies, single ...
Lire la suite >We report on the fabrication of silicon nanostructured superhydrophobic and superoleophobic surfaces also called "superomniphobic" surfaces. For this purpose, silicon interfaces with different surface morphologies, single or double scale structuration, were investigated. These structured surfaces were chemically treated with perfluorodecyltrichlorosilane (PFTS), a low surface energy molecule. The morphology of the resulting surfaces was characterized using scanning electron microscopy (SEM). Their wetting properties: static contact angle (CA) and contact angle hysteresis (CAH) were investigated using liquids of various surface tensions. Despite that we found that all the different morphologies display a superhydrophobic character (CA > 150° for water) and superoleophobic behavior (CA ≈ 140° for hexadecane), values of hysteresis are strongly dependent on the liquid surface tension and surface morphology. The best surface described in this study was composed of a dual scale texturation i.e. silicon micropillars covered by silicon nanowires. Indeed, this surface displayed high static contact angles and low hysteresis for all tested liquids.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Non spécifiée

Vulgarisation :

Non

Collections :

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

Source :

Harvested from HAL

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