Phase-field modeling of wetting on structured surfaces
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2005
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Mcode
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Language
en
Pages
194702/1-12
Series
The Journal of Chemical Physics, Volume 123, Issue 19
Abstract
We study the dynamics and equilibrium profile shapes of contact lines for wetting in the case of a spatially inhomogeneous solid wall with stripe defects. Using a phase-field model with conserved dynamics, we first numerically determine the contact line behavior in the case of a stripe defect of varying widths. For narrow defects, we find that the maximum distortion of the contact line and the healing length is related to the defect width, while for wide defects, it saturates to constant values. This behavior is in quantitative agreement with the experimental data. In addition, we examine the shape of the contact line between two stripe defects as a function of their separation. Using the phase-field model, we also analytically estimate the contact line configuration and find good qualitative agreement with the numerical results.Description
Keywords
wetting, liquid surfaces, solid surfaces, boundary value problems, gas liquid interfaces
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Citation
Luo, Kaifu & Kuittu, Mikko-Pekka & Tong, Chaohui & Majaniemi, Sami & Ala-Nissilä, Tapio. 2005. Phase-field modeling of wetting on structured surfaces. The Journal of Chemical Physics. Volume 123, Issue 19. P. 194702/1-12. ISSN 1089-7690 (electronic). ISSN 0021-9606 (printed). DOI: 10.1063/1.2102907.