Competing with barnacle cement: wetting resistance of a re-entrant surface reduces underwater adhesion of barnacles
| Autor: | Dennis S. Petersen, Thomas Kleinteich, Stanislav N. Gorb, Lars Heepe |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Aquatic Organisms Materials science Surface Properties Biomedical Engineering Biophysics Bioengineering 02 engineering and technology engineering.material Biochemistry Biomaterials Surface tension Biofouling 03 medical and health sciences chemistry.chemical_compound Silicone Coating Animals Composite material Life Sciences–Engineering interface Fouling fungi Thoracica Adhesion 021001 nanoscience & nanotechnology 030104 developmental biology chemistry Wettability engineering Wetting 0210 nano-technology Contact area Biotechnology |
| Zdroj: | Journal of The Royal Society Interface. 15:20180396 |
| ISSN: | 1742-5662 1742-5689 |
| DOI: | 10.1098/rsif.2018.0396 |
| Popis: | Surfaces with re-entrant topographies can repel liquids even of extremely low surface tension, almost independently of the material's inherent wettability. We show that this topography-based wetting resistance can also be applied to underwater applications, reducing the permanent adhesion of marine hardfouling organisms. Having combined a biofouling assay in the marine environment with microscopic analyses, we demonstrate how a synergistic effect of a soft silicone-based material with a re-entrant mushroom-shaped surface topography strongly increases the fouling release ability of such coatings compared with a smooth control made from the same material. Our coating inhibited the complete wetting of the solidifying glues produced by marine organisms, which resulted in a decreased contact area and, consequently, low adhesion. Our work suggests that topography-induced wetting resistance of surfaces may become a viable approach in preventing permanent adhesion of marine hardfouling organisms. |
| Databáze: | OpenAIRE |
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