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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
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2023
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2311.04639 |
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| _version_ | 1866910882224668672 |
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| author | Åsland, Anna Cecilie Cooil, Simon P. Mamedov, Damir Røst, Håkon I. Bakkelund, Johannes Li, Zheshen Karazhanov, Smagul Wells, Justin W. |
| author_facet | Åsland, Anna Cecilie Cooil, Simon P. Mamedov, Damir Røst, Håkon I. Bakkelund, Johannes Li, Zheshen Karazhanov, Smagul Wells, Justin W. |
| contents | Anti-icing coatings are intended to prevent ice formation on surfaces, minimising the risk of surface-related damage and also reducing ice-related hazards in society. $\mathrm{CeO}_{2}$ coatings are robust, hydrophobic, and transmit light, thus they are suitable for a range of applications. However, their evolving surface chemistry during the initial stages of $\mathrm{H}_{2}\mathrm{O}$ exposure at very low temperatures has not been investigated, despite that this is important for understanding their anti-icing properties. To study this, $\mathrm{CeO}_{2}$ coatings were grown by sputter deposition, cooled to $\approx100\,$K and exposed to a $\mathrm{H}_{2}\mathrm{O}$ atmosphere at $1\times10^{-8}\,\mathrm{mbar}$. We demonstrate the usefulness of X-ray photoelectron spectroscopy (XPS) as a tool for investigating the anti-icing properties of surfaces. We present XPS measurements of $\mathrm{CeO}_{2}$ coatings before and after exposure to $\mathrm{H}_{2}\mathrm{O}$, in-situ and at cryogenic temperatures. XPS reveals that little to no ice forms on the surface of $\mathrm{CeO}_{2}$ after the $\mathrm{H}_{2}\mathrm{O}$ exposure at $\approx100\,$K. In contrast, ice was observed all over the sample holder on which the $\mathrm{CeO}_{2}$ was mounted. These findings suggest that $\mathrm{CeO}_{2}$ is a promising candidate for future anti-icing coatings. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_04639 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Initial Stages of Water Absorption on $\mathbf{CeO}_{2}$ Surfaces at Very Low Temperatures for Understanding Anti-Icing Coatings Åsland, Anna Cecilie Cooil, Simon P. Mamedov, Damir Røst, Håkon I. Bakkelund, Johannes Li, Zheshen Karazhanov, Smagul Wells, Justin W. Chemical Physics Anti-icing coatings are intended to prevent ice formation on surfaces, minimising the risk of surface-related damage and also reducing ice-related hazards in society. $\mathrm{CeO}_{2}$ coatings are robust, hydrophobic, and transmit light, thus they are suitable for a range of applications. However, their evolving surface chemistry during the initial stages of $\mathrm{H}_{2}\mathrm{O}$ exposure at very low temperatures has not been investigated, despite that this is important for understanding their anti-icing properties. To study this, $\mathrm{CeO}_{2}$ coatings were grown by sputter deposition, cooled to $\approx100\,$K and exposed to a $\mathrm{H}_{2}\mathrm{O}$ atmosphere at $1\times10^{-8}\,\mathrm{mbar}$. We demonstrate the usefulness of X-ray photoelectron spectroscopy (XPS) as a tool for investigating the anti-icing properties of surfaces. We present XPS measurements of $\mathrm{CeO}_{2}$ coatings before and after exposure to $\mathrm{H}_{2}\mathrm{O}$, in-situ and at cryogenic temperatures. XPS reveals that little to no ice forms on the surface of $\mathrm{CeO}_{2}$ after the $\mathrm{H}_{2}\mathrm{O}$ exposure at $\approx100\,$K. In contrast, ice was observed all over the sample holder on which the $\mathrm{CeO}_{2}$ was mounted. These findings suggest that $\mathrm{CeO}_{2}$ is a promising candidate for future anti-icing coatings. |
| title | Initial Stages of Water Absorption on $\mathbf{CeO}_{2}$ Surfaces at Very Low Temperatures for Understanding Anti-Icing Coatings |
| topic | Chemical Physics |
| url | https://arxiv.org/abs/2311.04639 |