Quantitative testing of robustness on ...
Document type :
Compte-rendu et recension critique d'ouvrage
DOI :
Title :
Quantitative testing of robustness on superomniphobic surfaces by drop impact
Author(s) :
Nguyen, Thi Phuong Nhung [Auteur]
Institut de Recherche Interdisciplinaire [Villeneuve d'Ascq] [IRI]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Brunet, Philippe [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Coffinier, Yannick [Auteur]
Institut de Recherche Interdisciplinaire [Villeneuve d'Ascq] [IRI]
Boukherroub, Rabah [Auteur]
Institut de Recherche Interdisciplinaire [Villeneuve d'Ascq] [IRI]
Institut de Recherche Interdisciplinaire [Villeneuve d'Ascq] [IRI]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Brunet, Philippe [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Coffinier, Yannick [Auteur]
Institut de Recherche Interdisciplinaire [Villeneuve d'Ascq] [IRI]
Boukherroub, Rabah [Auteur]
Institut de Recherche Interdisciplinaire [Villeneuve d'Ascq] [IRI]
Journal title :
Langmuir
Pages :
18369-18373
Publisher :
American Chemical Society
Publication date :
2010
ISSN :
0743-7463
HAL domain(s) :
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
Sciences de l'ingénieur [physics]/Micro et nanotechnologies/Microélectronique
Sciences de l'ingénieur [physics]/Micro et nanotechnologies/Microélectronique
English abstract : [en]
The quality of a liquid-repellent surface is quantified by both the apparent contact angle θ0 that a sessile drop adopts on it, and the value of the liquid pressure threshold the surface can withstand without being impaled ...
Show more >The quality of a liquid-repellent surface is quantified by both the apparent contact angle θ0 that a sessile drop adopts on it, and the value of the liquid pressure threshold the surface can withstand without being impaled by the liquid, hence keeping a low-friction condition. We designed surfaces covered with nano-wires obtained by the vapor-liquid-solid (VLS) growth technique, that are able to repel most of the existing non-polar liquids including those of very low surface tension, as well as many polar liquids of moderate to high surface tension. These super-omniphobic surfaces exhibit apparent contact angles ranging from 125 to 160◦ depending on the liquid. We tested the robustness of the surfaces against impalement by carrying out drop impact experiments. Our results show how this robustness depends on the Young’s contact angle θ0 related to the surface tension of the liquid, and that the orientational growth of NWs is a favorable factor for robustness.Show less >
Show more >The quality of a liquid-repellent surface is quantified by both the apparent contact angle θ0 that a sessile drop adopts on it, and the value of the liquid pressure threshold the surface can withstand without being impaled by the liquid, hence keeping a low-friction condition. We designed surfaces covered with nano-wires obtained by the vapor-liquid-solid (VLS) growth technique, that are able to repel most of the existing non-polar liquids including those of very low surface tension, as well as many polar liquids of moderate to high surface tension. These super-omniphobic surfaces exhibit apparent contact angles ranging from 125 to 160◦ depending on the liquid. We tested the robustness of the surfaces against impalement by carrying out drop impact experiments. Our results show how this robustness depends on the Young’s contact angle θ0 related to the surface tension of the liquid, and that the orientational growth of NWs is a favorable factor for robustness.Show less >
Language :
Anglais
Popular science :
Non
Source :
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