Multipronged heat-exchanger based on femtosecond laser-nano/microstructured Aluminum for thermoelectric heat scavengers
文献类型：期刊论文
| 作者 | S. A. Jalil,M. ElKabbash,Z. H. Li,J. H. Zhang,S. Singh,Z. B. Zhan and C. L. Guo |
| 刊名 | Nano Energy
 |
| 出版日期 | 2020 |
| 卷号 | 75页码:7 |
| ISSN号 | 2211-2855 |
| DOI | 10.1016/j.nanoen.2020.104987 |
| 英文摘要 | Femtosecond (fs) laser processing can significantly alter the optical, thermal, mechanical, and electrical properties of materials. Here, we show that fs-laser processing transforms aluminum (Al) to a highly efficient and multipronged heat exchanger. By optimizing the formed surface nano- and microstructures, we increase the Al emissivity and surface area by 700% and 300%, respectively. Accordingly, we show that fs-laser treated Al (fs-Al) increases the radiative and convective cooling power of fs-Al by 2100% and 300%, respectively, at 200 degrees C. As a direct application, we use fs-Al as a heat sink for a thermoelectric generator (TEG) and demonstrate a 280% increase in the TEG output power compared to a TEG with an untreated Al heat exchanger at 200 degrees C. The multipronged enhancement in fs-Al heat exchange properties lead to an increase in the TEG output power over a wide temperature (T) range (T > 50 degrees C). Conversely, a simple radiative cooling heat exchanger increases the TEG output power within a limited temperature range (T > 150 degrees C). We investigate the laser processing parameters necessary to maximize the spectral emissivity and surface area of fs-Al. Fs-Al promises to be a widely used and compact heat exchanger for passive cooling of computers and data centers as well as to increase the efficiency of TEGs incorporated in sensors and handheld electronics. |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/64710]  |
| 专题 | 中国科学院长春光学精密机械与物理研究所 |
| 推荐引用方式 GB/T 7714 | S. A. Jalil,M. ElKabbash,Z. H. Li,J. H. Zhang,S. Singh,Z. B. Zhan and C. L. Guo. Multipronged heat-exchanger based on femtosecond laser-nano/microstructured Aluminum for thermoelectric heat scavengers[J]. Nano Energy,2020,75:7. |
| APA | S. A. Jalil,M. ElKabbash,Z. H. Li,J. H. Zhang,S. Singh,Z. B. Zhan and C. L. Guo.(2020).Multipronged heat-exchanger based on femtosecond laser-nano/microstructured Aluminum for thermoelectric heat scavengers.Nano Energy,75,7. |
| MLA | S. A. Jalil,M. ElKabbash,Z. H. Li,J. H. Zhang,S. Singh,Z. B. Zhan and C. L. Guo."Multipronged heat-exchanger based on femtosecond laser-nano/microstructured Aluminum for thermoelectric heat scavengers".Nano Energy 75(2020):7. |
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