Publication detail
A liquid interaction with ultrahydrophobic surfaces
JAŠÍKOVÁ, D. KOTEK, M. FIALOVÁ, S. KOPECKÝ, V.
Czech title
Interakce tekutiny s ultrahydrofobními povrchy
English title
A liquid interaction with ultrahydrophobic surfaces
Type
journal article in Web of Science
Language
en
Original abstract
The interaction of the liquid with ultra-hydrophobic surfaces was so far studied through estimation of static contact angles. It appears now that this interaction is more complex, and cannot be described only with static methods. Effect of ultra-hydrophobic surfaces and their advantages are also particularly in dynamic interaction with liquids. One of the parameters that determine the character of the dynamic interaction is presence of air film close to the surface. The thickness of air film can be measured with long distance microscopy and the interaction with the flow using micro PIV method. Here we present the results of measurements of the air film that is created close to ultra-hydrophobic surfaces and the dependence of its thickness on the Re number.
Czech abstract
Interakce se kapalin s ultra-hydrofobní, povrchem byl dosud studován prostřednictvím odhadu statického kontaktního úhlu. Zdá se, že tato interakce je složitější a nelze popsat pouze pomocí statické metody. Účinek ultra-hydrofobních ploch a jejich výhody jsou také zřejmé zejména v dynamické interakci těchto povrchů s kapalinami. Jedním z parametrů, které určují charakter dynamické interakce je přítomnost vzduchového filmu blízko povrchu. Tloušťka filmu vzduchu lze měřit pomocí vzdálené mikroskopie a interakcí s průtokem pomocí micro PIV metody. Zde uvádíme výsledky měření vzduchového filmu, který je vytvořen v blízkosti ultra-hydrofobního povrchu a závislost jeho tloušťky na Re čísle.
English abstract
The interaction of the liquid with ultra-hydrophobic surfaces was so far studied through estimation of static contact angles. It appears now that this interaction is more complex, and cannot be described only with static methods. Effect of ultra-hydrophobic surfaces and their advantages are also particularly in dynamic interaction with liquids. One of the parameters that determine the character of the dynamic interaction is presence of air film close to the surface. The thickness of air film can be measured with long distance microscopy and the interaction with the flow using micro PIV method. Here we present the results of measurements of the air film that is created close to ultra-hydrophobic surfaces and the dependence of its thickness on the Re number.
Keywords in Czech
hydrofobní povrch, vrstva vzduchu, kontaktní úhel, mikro PIV
Keywords in English
hydrophobic surface, air layer, contact angle, micro PIV
Released
28.03.2016
Publisher
EDP Sciences
Location
EFM15 – Experimental Fluid Mechanics 2015
ISSN
2100-014X
Volume
114
Number
1
Pages from–to
1–6
Pages count
6
BIBTEX
@article{BUT123504,
author="Darina {Jašíková} and Michal {Kotek} and Simona {Fialová} and Václav {Kopecký},
title="A liquid interaction with ultrahydrophobic surfaces",
year="2016",
volume="114",
number="1",
month="March",
pages="1--6",
publisher="EDP Sciences",
address="EFM15 – Experimental Fluid Mechanics 2015",
issn="2100-014X"
}