Femtosecond and picosecond laser fabrication for long-term superhydrophilic metal surfaces

doi:10.1016/j.optlastec.2021.107241

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	Femtosecond and picosecond laser fabrication for long-term superhydrophilic metal surfaces
	R. A. Rajan; C.-V. Ngo; J. Yang; Y. Liu; K. S. Rao and C. Guo
	2021
发表期刊	Optics and Laser Technology
ISSN	303992
卷号	143
摘要	This paper reports the femtosecond (fs) laser and picosecond (ps) laser fabrications to create superhydrophilic surfaces. Subsequently, investigations of the surface morphologies and the surface chemistry using EDS, XRD, and FTIR-spectroscopy are carried out. Due to significant variations in the formation of micro-nano structure and molecular compositions, fs laser and ps laser fabricated surfaces exhibited a noteworthy difference in surface wettability by controlling the laser parameters. It is evident from experimental results that ps laser structured surfaces show efficient superhydrophilic nature (0 contact angle with 300 18 ms spreading time) than the fs laser (0 contact angle with 400 18 ms spreading time) due to higher surface roughness factor and surface energy resulted from laser-induced thermalization. Nevertheless, all fabricated surfaces convert from superhydrophilic to superhydrophobic due to chemisorbed hydroxyl (OH) and CC(H) functional group contamination. An eco-friendly zeolite (Na-based ZSM-5) coating is used on such ultrafast laser fabricated surfaces to maintain the superhydrophilic property for more than 14 months. The proposed investigation provides an innovative approach for producing long-term stable superhydrophilic metal surfaces, which are useful for water treatment, microfluidics, and heat transfer applications. 2021 Elsevier Ltd
DOI	10.1016/j.optlastec.2021.107241
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收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/65247
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	R. A. Rajan,C.-V. Ngo,J. Yang,et al. Femtosecond and picosecond laser fabrication for long-term superhydrophilic metal surfaces[J]. Optics and Laser Technology,2021,143.
APA	R. A. Rajan,C.-V. Ngo,J. Yang,Y. Liu,&K. S. Rao and C. Guo.(2021).Femtosecond and picosecond laser fabrication for long-term superhydrophilic metal surfaces.Optics and Laser Technology,143.
MLA	R. A. Rajan,et al."Femtosecond and picosecond laser fabrication for long-term superhydrophilic metal surfaces".Optics and Laser Technology 143(2021).

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