The wetting characteristics of aluminum droplets on rough surfaces with molecular dynamics simulations
| العنوان: | The wetting characteristics of aluminum droplets on rough surfaces with molecular dynamics simulations |
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| المؤلفون: | Chaohong Guan, Xiaojun Lv, Chang Chen, Zexun Han |
| المصدر: | Physical Chemistry Chemical Physics. 22:2361-2371 |
| بيانات النشر: | Royal Society of Chemistry (RSC), 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Materials science, General Physics and Astronomy, 02 engineering and technology, Adhesion, Surface finish, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Contact angle, Amorphous carbon, Surface roughness, Graphite, Wetting, Physical and Theoretical Chemistry, Composite material, 0210 nano-technology, Anisotropy |
| الوصف: | In the present study, the impact of surface roughness on the wettability behavior of Al droplets has been investigated via molecular dynamics (MD) simulations. In this work, amorphous carbon (AC) and graphite substrates with different depths and widths were considered. The results show that the increased width of grooves causes the transition of the wetting state from Cassie to Wenzel. Thermodynamic property analysis results indicate that the solid-liquid adhesion and the work done for the removal of the Al droplet from the solid surface decrease as the roughness increases. However, the adhesion in the Wenzel wetting state is better than that in the Cassie wetting state. Therefore, the contact angle increases with the increased roughness in the Cassie wetting systems, while in the Wenzel wetting systems, the contact angle is less than that in other rough systems. In addition, due to the heterogeneity of the surfaces, the density of Al droplets in the solid-liquid interface is decreased with the increased roughness. The anisotropic spreading of Al liquid can be explained by the MSD curves along the X and Y directions. |
| تدمد: | 1463-9084 1463-9076 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::18ff2d4c01fc9a3d54dfce997235f3a6 https://doi.org/10.1039/c9cp05672f |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....18ff2d4c01fc9a3d54dfce997235f3a6 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14639084 14639076 |
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