Multipronged heat-exchanger based on femtosecond laser-nano/microstructured Aluminum for thermoelectric heat scavengers

doi:10.1016/j.nanoen.2020.104987

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	Multipronged heat-exchanger based on femtosecond laser-nano/microstructured Aluminum for thermoelectric heat scavengers
	S. A. Jalil,M. ElKabbash,Z. H. Li,J. H. Zhang,S. Singh,Z. B. Zhan and C. L. Guo
	2020
发表期刊	Nano Energy
ISSN	2211-2855
卷号	75 页码:7
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.
DOI	10.1016/j.nanoen.2020.104987
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收录类别	SCI ; EI
语种	英语
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文献类型	期刊论文
条目标识符	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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