气候变化领域集成服务门户(CCPortal): Influence of gold nanolayer coating on the continuous-wave laser ablation of a pure aluminum surface: Evaluations of structural and optical features

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DOI	10.1016/j.tsf.2019.01.021
	Influence of gold nanolayer coating on the continuous-wave laser ablation of a pure aluminum surface: Evaluations of structural and optical features
	Jafari Eskandari M.; Shafyei A.; Razi S.; Shoja Razavi R.
发表日期	2019
ISSN	406090
起始页码	126
结束页码	132
卷号	672
英文摘要	In this paper, formation of uniform and large-area micro/nanostructures on pure aluminum surfaces using a continuous-wave laser irradiation is presented. Gold nanolayer coating was utilized as a confinement layer for controlling the possible hydrodynamic phenomena in a molten area. Dependency of the laser-induced morphology on the thickness of a gold coating was investigated in this regard. Scanning electron microscopy, energy dispersive spectroscopy, grazing test of the X-ray diffraction, and optical absorption/reflection spectroscopy in UV/visible/IR ranges were employed to characterize the samples. Results showed that the formation of uniform structures of average sizes of 50 nm-5 μm on aluminum surface was possible following the irradiation of a continuous-wave CO 2 laser, delivering 130 W beam power. Alterations of the surface morphology brought about an increase in specific absorption peaks at the UV region and the appearance of an absorption peak in the visible range. In addition, these structure-covered surfaces provided interesting reflection behaviors in different spectral areas, which can clearly reflect their high potential to be used as selective solar absorbers. The results of this investigation indicated that optical characteristics such as absorption and emission coefficients as well as ξ factor were 0.98, 0.13, and 7.53, respectively. It can therefore be concluded that this process can be considered an efficient and fast technique to fabricate selective solar absorbers. Elsevier B.V.
英文关键词	Aluminum; Black carbon; Continuous-wave CO 2 laser; Gold; Nanolayer; Nanostructures; Selective solar absorber; Sputtering
scopus关键词	Aluminum; Aluminum coatings; Carbon dioxide; Carbon dioxide lasers; Continuous wave lasers; Energy dispersive spectroscopy; Gold; Gold coatings; Irradiation; Laser ablation; Light absorption; Nanostructures; Scanning electron microscopy; Sputtering; Absorption and emissions; Black carbon; CO2-laser; Micro/nanostructures; Nano layers; Optical characteristics; Selective solar absorber; Specific absorption; Solar absorbers
来源期刊	Thin Solid Films
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176485
作者单位	Department of Materials Engineering, Isfahan University of Technology, Isfahan, 84156-83111, Iran; Faculty of Electrical Engineering, Urmia University of Technology - UUT, Urmia, Iran; Department of Materials Engineering, Malek Ashtar University of Technology, Shahin Shahr, Iran
推荐引用方式 GB/T 7714	Jafari Eskandari M.,Shafyei A.,Razi S.,et al. Influence of gold nanolayer coating on the continuous-wave laser ablation of a pure aluminum surface: Evaluations of structural and optical features[J],2019,672.
APA	Jafari Eskandari M.,Shafyei A.,Razi S.,&Shoja Razavi R..(2019).Influence of gold nanolayer coating on the continuous-wave laser ablation of a pure aluminum surface: Evaluations of structural and optical features.Thin Solid Films,672.
MLA	Jafari Eskandari M.,et al."Influence of gold nanolayer coating on the continuous-wave laser ablation of a pure aluminum surface: Evaluations of structural and optical features".Thin Solid Films 672(2019).