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| DOI | 10.29026/oea.2024.230194 |
| Ultrahigh performance passive radiative cooling by hybrid polar dielectric metasurface thermal emitters | |
| 发表日期 | 2024 |
| ISSN | 2096-4579 |
| 起始页码 | 7 |
| 结束页码 | 4 |
| 卷号 | 7期号:4 |
| 英文摘要 | Real -world passive radiative cooling requires highly emissive, selective, and omnidirectional thermal emitters to maintain the radiative cooler at a certain temperature below the ambient temperature while maximizing the net cooling power. Despite various selective thermal emitters have been demonstrated, it is still challenging to achieve these conditions simultaneously because of the extreme difficulty in controlling thermal emission of photonic structures in multidimension. Here we demonstrated hybrid polar dielectric metasurface thermal emitters with machine learning inverse design, enabling a high emissivity of similar to 0.92 within the atmospheric transparency window 8-13 mu m, a large spectral selectivity of similar to 1.8 and a wide emission angle up to 80 degrees, simultaneously. This selective and omnidirectional thermal emitter has led to a new record of temperature reduction as large as similar to 15.4 degrees C under strong solar irradiation of similar to 800 W/m(2), significantly surpassing the state-of-the-art results. The designed structures also show great potential in tackling the urban heat island effect, with modelling results suggesting a large energy saving and deployment area reduction. This research will make significant impact on passive radiative cooling, thermal energy photonics and tackling global climate change. |
| 英文关键词 | radiative cooling; dielectric metasurfaces; machine learning; thermal emitters |
| 语种 | 英语 |
| WOS研究方向 | Optics |
| WOS类目 | Optics |
| WOS记录号 | WOS:001222944500001 |
| 来源期刊 | OPTO-ELECTRONIC ADVANCES
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/294143 |
| 作者单位 | University of Shanghai for Science & Technology; University of Shanghai for Science & Technology |
| 推荐引用方式 GB/T 7714 | . Ultrahigh performance passive radiative cooling by hybrid polar dielectric metasurface thermal emitters[J],2024,7(4). |
| APA | (2024).Ultrahigh performance passive radiative cooling by hybrid polar dielectric metasurface thermal emitters.OPTO-ELECTRONIC ADVANCES,7(4). |
| MLA | "Ultrahigh performance passive radiative cooling by hybrid polar dielectric metasurface thermal emitters".OPTO-ELECTRONIC ADVANCES 7.4(2024). |
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