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Dynamic Wetting Properties of Mesh Substrates with Tunable Water Adhesion
Author(s) -
Ramos Chagas Gabriela,
Fradin Caroline,
Celestini Franck,
Guittard Frédéric,
Darmanin Thierry
Publication year - 2019
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201900443
Subject(s) - wetting , adhesion , materials science , substrate (aquarium) , adhesive , nanotechnology , contact angle , elasticity (physics) , composite material , chemical engineering , engineering , geology , oceanography , layer (electronics)
In nature, wetting phenomena are present nearly everywhere and are a source of inspiration for liquid transportation. A good understanding of the underlying dynamic phenomena that governs wettability is therefore extremely important for researchers involved in bio‐inspired surfaces. Herein, we study the adhesive behavior with water of mesh substrates modified with structured copolymers in order to tune the surfaces from parahydrophobic states (high water adhesion) to superhydrophobic states (low water adhesion). Using the ejection test method (ETM), a new technique that consists of the ejection of water droplets deposited onto a substrate with the aid of a catapult system, we experimentally demonstrate that the elasticity of the mesh substrate can be exploited for efficient vertical actuation of droplets.