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Anisotropic Contact‐Angle Hysteresis of Chemically Nanostructured Surfaces
Author(s) -
Gleiche Michael,
Chi Lifeng,
Gedig Erk,
Fuchs Harald
Publication year - 2001
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/1439-7641(20010316)2:3<187::aid-cphc187>3.0.co;2-7
Subject(s) - strips , contact angle , hysteresis , wetting , perpendicular , materials science , mica , anisotropy , wetting transition , homogeneous , optics , surface (topology) , condensed matter physics , composite material , geometry , physics , thermodynamics , mathematics
Spatially alternating wetting properties are needed in order to test predictions on droplet contact angles on such complex, non‐homogeneous surfaces. An evaporating droplet on a mica surface with hydrophillic strips 0.2–0.3 μm wide, as shown in the picture, recedes smoothly in directions parallel to the strips but in “jumps” with a variable contact angle perpendicular to the strips.