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Authors
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Synytska, A. ; Ionov, L. ; Dutschk, V. ; Stamm, M. ; Grundke, K.
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Title
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Wetting on regularly structured surfaces from "Core-Shell" particles: Theoretical predictions and experimental findings
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Date
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21.10.2008
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Number
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17086
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Abstract
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In this paper, we report on a systematic and thorough study of wetting phenomenon on regularly patterned surfaces fabricated from inorganic-organic hybrid core-shell particles of different radii (100 nm to 10 ?m). Inorganic silica particles were modified through chemical anchoring of polymers and silanes with different hydrophobicities. Modified core-shell particles were assembled into regular hexagonally packed structures. The use of regular structured surfaces with specifically designed surface roughness allowed mathematic prediction of the wetting behavior according to existing models and its comparison with experimental observations. It was shown that the character of the wetting behavior varies with the particles size and the chemical nature of the surface immobilized substance. For the regular particle assemblies, an increase in the vertical roughness was achieved with increasing particle radius, but without changing the Wenzel roughness factor.
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Publisher
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Langmuir
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Wikidata
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Citation
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Langmuir 24 (2008) 11895-11901
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DOI
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https://doi.org/10.1021/la8010585
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Tags
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superhydrophobic surfaces contact angles rough surfaces wettability water fabrication topography lotus films
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