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| Hauptverfasser: | , , , , , , , |
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| Format: | Preprint |
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2025
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| Online-Zugang: | https://arxiv.org/abs/2505.22874 |
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| _version_ | 1866912637166551040 |
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| author | Singh, Navindra D. Leung, James Feng, Ji González-Alcalde, Alma K. Tolentino, Arial Tuft, David Guo, Juchen Vuong, Luat T. |
| author_facet | Singh, Navindra D. Leung, James Feng, Ji González-Alcalde, Alma K. Tolentino, Arial Tuft, David Guo, Juchen Vuong, Luat T. |
| contents | Most solar desalination efforts are photothermal: they evaporate water with ``black'' materials that absorb as much sunlight as possible. Such ``brine-boiling'' methods are limited by the high thermal mass of water, i.e., its capacity to store and release heat. Here, we study the light-enhanced evaporation by a hard, white, aluminum nitride wick, and propose a route to selectively target salt-water bonds instead of bulk heating via deep-UV interactions. Through experiments and analyses that isolate the effects of light absorption and heating in aluminum nitride, we provide experimental evidence of a light-driven, spectrum-selective path to non-photothermal saltwater evaporation. Leverage of these light-matter interactions in white ceramic wicks may achieve low-cost, low-energy desalination, reduce the heat island effects of traditional solar technologies, and contribute to future cooling technologies where drought is also a concern. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_22874 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Spectrum Selective Interfaces and Materials towards Non-photothermal Saltwater Evaporation: Demonstration with a White Ceramic Wick Singh, Navindra D. Leung, James Feng, Ji González-Alcalde, Alma K. Tolentino, Arial Tuft, David Guo, Juchen Vuong, Luat T. Materials Science Optics Most solar desalination efforts are photothermal: they evaporate water with ``black'' materials that absorb as much sunlight as possible. Such ``brine-boiling'' methods are limited by the high thermal mass of water, i.e., its capacity to store and release heat. Here, we study the light-enhanced evaporation by a hard, white, aluminum nitride wick, and propose a route to selectively target salt-water bonds instead of bulk heating via deep-UV interactions. Through experiments and analyses that isolate the effects of light absorption and heating in aluminum nitride, we provide experimental evidence of a light-driven, spectrum-selective path to non-photothermal saltwater evaporation. Leverage of these light-matter interactions in white ceramic wicks may achieve low-cost, low-energy desalination, reduce the heat island effects of traditional solar technologies, and contribute to future cooling technologies where drought is also a concern. |
| title | Spectrum Selective Interfaces and Materials towards Non-photothermal Saltwater Evaporation: Demonstration with a White Ceramic Wick |
| topic | Materials Science Optics |
| url | https://arxiv.org/abs/2505.22874 |