Creating superhydrophobic and antibacterial surfaces on gold by femtosecond laser pulses

doi:10.1016/j.apsusc.2019.144952

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	Creating superhydrophobic and antibacterial surfaces on gold by femtosecond laser pulses
	S. A. Jalil,M. Akram,J. A. Bhat,J. J. Hayes,S. C. Singh,M. ElKabbash and C. L. Guo
	2020
发表期刊	Applied Surface Science
ISSN	0169-4332
卷号	506 页码:7
摘要	Femtosecond laser-induced surface structuring is a promising technique for the large-scale formation of nano- and microscale structures that can effectively modify materials' optical, electrical, mechanical, and tribological properties. Here we perform a systematic study on femtosecond laser-induced surface structuring on gold (Au) surface and their effect on both hydrophobicity and bacterial-adhesion properties. We created various structures including subwavelength femtosecond laser-induced periodic surface structures (fs-LIPSSs), fs-LIPSSs covered with nano/microstructures, conic and 1D-rod-like structures (<= 6 mu m), and spherical nanostructures with a diameter >= 10 nm, by raster scanning the laser beam, at different laser fluences. We show that femtosecond laser processing turns originally hydrophilic Au to a superhydrophobic surface. We determine the optimal conditions for the creation of the different surface structures and explain the mechanism behind the formed structures and show that the laser fluence is the main controlling parameter. We demonstrate the ability of all the formed surface structures to reduce the adhesion of Escherichia coli (E. coli) bacteria and show that fs-LIPSSs enjoys superior antibacterial adhesion properties due to its large-scale surface coverage. Approximately 99.03% of the fs-LIPSSs surface is free from bacterial adhesion. The demonstrated physical inhibition of bacterial colonies and biofilm formation without antibiotics is a crucial step towards reducing antimicrobial-resistant infections.
DOI	10.1016/j.apsusc.2019.144952
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收录类别	SCI ; EI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/64390
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. Akram,J. A. Bhat,J. J. Hayes,S. C. Singh,M. ElKabbash and C. L. Guo. Creating superhydrophobic and antibacterial surfaces on gold by femtosecond laser pulses[J]. Applied Surface Science,2020,506:7.
APA	S. A. Jalil,M. Akram,J. A. Bhat,J. J. Hayes,S. C. Singh,M. ElKabbash and C. L. Guo.(2020).Creating superhydrophobic and antibacterial surfaces on gold by femtosecond laser pulses.Applied Surface Science,506,7.
MLA	S. A. Jalil,M. Akram,J. A. Bhat,J. J. Hayes,S. C. Singh,M. ElKabbash and C. L. Guo."Creating superhydrophobic and antibacterial surfaces on gold by femtosecond laser pulses".Applied Surface Science 506(2020):7.

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Creating superhydrop（2933KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览下载