Water condensation on ultrahydrophobic flexible micro pillar surface
| Autor: | R. D. Narhe |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Surface (mathematics)
Materials science Polydimethylsiloxane Capillary action Condensation Pillar General Physics and Astronomy Nanotechnology 02 engineering and technology Bending 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Quantitative Biology::Cell Behavior 0104 chemical sciences Physics::Fluid Dynamics chemistry.chemical_compound chemistry Composite material 0210 nano-technology Astrophysics::Galaxy Astrophysics |
| Zdroj: | EPL (Europhysics Letters). 114:36002 |
| ISSN: | 1286-4854 0295-5075 |
| DOI: | 10.1209/0295-5075/114/36002 |
| Popis: | We investigated the growth dynamics of water drops in controlled condensation on ultrahydrophobic geometrically patterned polydimethylsiloxane (PDMS) cylindrical micro pillars. At the beginning, the condensed drops size is comparable to the pattern dimensions. The interesting phenomenon we observe is that, as the condensation progresses, water drops between the pillars become unstable and enforced to grow in the upward direction along the pillars surface. The capillary force of these drops is of the order of and acts on neighboring pillars. That results into bending of the pillars. Pillars bending enhances the condensation and favors the most energetically stable Wenzel state. |
| Databáze: | OpenAIRE |
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