Creating superhydrophobic and antibacterial surfaces on gold by femtosecond laser pulses

doi:10.1016/j.apsusc.2019.144952

CORC > 长春光学精密机械与物理研究所 > 中国科学院长春光学精密机械与物理研究所

	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
刊名	Applied Surface Science
	2020
卷号	506 页码:7
ISSN号	0169-4332
DOI	10.1016/j.apsusc.2019.144952
英文摘要	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.
URL标识	查看原文
语种	英语
内容类型	期刊论文
源URL	[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.