Femtosecond laser induced periodic surface structures for the enhancement of field emission properties of tungsten

doi:10.1364/ome.9.003183

	Femtosecond laser induced periodic surface structures for the enhancement of field emission properties of tungsten
	M.Akram; S.Bashir; S.A.Jalil; M.ElKabbash; F.Aumayr
	2019
发表期刊	Optical Materials Express
ISSN	2159-3930
卷号	9 期号:7 页码:3183-3192
摘要	Direct femtosecond laser ablation enables the maskless fabrication of nano- and micro-scale structures on variety of materials. A typical example is the formation of femtosecond Laser Induced Periodic Surface Structures (fs-LIPSSs), which can lead to strong modification in electrical, optical, wetting, and field emission properties of materials. Here, we study the field emission properties of fs-LIPSSs. We created fs-LIPSSs and fs-LIPSSs covered with nano-and micro-scale structures at different laser fluences on Tungsten (W) and showed that these structures offer significant enhancement in electron field emission properties. We provide a phenomenological model to explain the enhancement of electron emission parameters. The enhancement in the field emission properties of laser irradiated W is explained based on the convergence of electric field lines at the ridges of the fs-LIPSSs and fs-LIPSSs covered with nanoscale structures, which in turn, enhances the local field intensity and the electron emission parameters. The direct fabrication of 1D subwavelength structures is an important step towards the creation of low-cost cathodes for various potential applications. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License.
关键词	electron-emission,nanowires,growth,array,Materials Science,Optics
DOI	10.1364/ome.9.003183
URL	查看原文
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/181722/63482
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	M.Akram,S.Bashir,S.A.Jalil,et al. Femtosecond laser induced periodic surface structures for the enhancement of field emission properties of tungsten[J]. Optical Materials Express,2019,9(7):3183-3192.
APA	M.Akram,S.Bashir,S.A.Jalil,M.ElKabbash,&F.Aumayr.(2019).Femtosecond laser induced periodic surface structures for the enhancement of field emission properties of tungsten.Optical Materials Express,9(7),3183-3192.
MLA	M.Akram,et al."Femtosecond laser induced periodic surface structures for the enhancement of field emission properties of tungsten".Optical Materials Express 9.7(2019):3183-3192.

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