High-speed manufacturing of highly regular femtosecond laser-induced periodic surface structures: physical origin of regularity

Abstract Highly regular laser-induced periodic surface structures (HR-LIPSS) have been fabricated on surfaces of Mo, steel alloy and Ti at a record processing speed on large areas and with a record regularity in the obtained sub-wavelength structures. The physical mechanisms governing LIPSS regulari...

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Autores principales:	Iaroslav Gnilitskyi, Thibault J.-Y. Derrien, Yoann Levy, Nadezhda M. Bulgakova, Tomáš Mocek, Leonardo Orazi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/78bcfc2649df4d4d8ee4be90e412ae54
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spelling	oai:doaj.org-article:78bcfc2649df4d4d8ee4be90e412ae542021-12-02T11:41:10ZHigh-speed manufacturing of highly regular femtosecond laser-induced periodic surface structures: physical origin of regularity10.1038/s41598-017-08788-z2045-2322https://doaj.org/article/78bcfc2649df4d4d8ee4be90e412ae542017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-08788-zhttps://doaj.org/toc/2045-2322Abstract Highly regular laser-induced periodic surface structures (HR-LIPSS) have been fabricated on surfaces of Mo, steel alloy and Ti at a record processing speed on large areas and with a record regularity in the obtained sub-wavelength structures. The physical mechanisms governing LIPSS regularity are identified and linked with the decay length (i.e. the mean free path) of the excited surface electromagnetic waves (SEWs). The dispersion of the LIPSS orientation angle well correlates with the SEWs decay length: the shorter this length, the more regular are the LIPSS. A material dependent criterion for obtaining HR-LIPSS is proposed for a large variety of metallic materials. It has been found that decreasing the spot size close to the SEW decay length is a key for covering several cm2 of material surface by HR-LIPSS in a few seconds. Theoretical predictions suggest that reducing the laser wavelength can provide the possibility of HR-LIPSS production on principally any metal. This new achievement in the unprecedented level of control over the laser-induced periodic structure formation makes this laser-writing technology to be flexible, robust and, hence, highly competitive for advanced industrial applications based on surface nanostructuring.Iaroslav GnilitskyiThibault J.-Y. DerrienYoann LevyNadezhda M. BulgakovaTomáš MocekLeonardo OraziNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Iaroslav Gnilitskyi Thibault J.-Y. Derrien Yoann Levy Nadezhda M. Bulgakova Tomáš Mocek Leonardo Orazi High-speed manufacturing of highly regular femtosecond laser-induced periodic surface structures: physical origin of regularity
description	Abstract Highly regular laser-induced periodic surface structures (HR-LIPSS) have been fabricated on surfaces of Mo, steel alloy and Ti at a record processing speed on large areas and with a record regularity in the obtained sub-wavelength structures. The physical mechanisms governing LIPSS regularity are identified and linked with the decay length (i.e. the mean free path) of the excited surface electromagnetic waves (SEWs). The dispersion of the LIPSS orientation angle well correlates with the SEWs decay length: the shorter this length, the more regular are the LIPSS. A material dependent criterion for obtaining HR-LIPSS is proposed for a large variety of metallic materials. It has been found that decreasing the spot size close to the SEW decay length is a key for covering several cm2 of material surface by HR-LIPSS in a few seconds. Theoretical predictions suggest that reducing the laser wavelength can provide the possibility of HR-LIPSS production on principally any metal. This new achievement in the unprecedented level of control over the laser-induced periodic structure formation makes this laser-writing technology to be flexible, robust and, hence, highly competitive for advanced industrial applications based on surface nanostructuring.
format	article
author	Iaroslav Gnilitskyi Thibault J.-Y. Derrien Yoann Levy Nadezhda M. Bulgakova Tomáš Mocek Leonardo Orazi
author_facet	Iaroslav Gnilitskyi Thibault J.-Y. Derrien Yoann Levy Nadezhda M. Bulgakova Tomáš Mocek Leonardo Orazi
author_sort	Iaroslav Gnilitskyi
title	High-speed manufacturing of highly regular femtosecond laser-induced periodic surface structures: physical origin of regularity
title_short	High-speed manufacturing of highly regular femtosecond laser-induced periodic surface structures: physical origin of regularity
title_full	High-speed manufacturing of highly regular femtosecond laser-induced periodic surface structures: physical origin of regularity
title_fullStr	High-speed manufacturing of highly regular femtosecond laser-induced periodic surface structures: physical origin of regularity
title_full_unstemmed	High-speed manufacturing of highly regular femtosecond laser-induced periodic surface structures: physical origin of regularity
title_sort	high-speed manufacturing of highly regular femtosecond laser-induced periodic surface structures: physical origin of regularity
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/78bcfc2649df4d4d8ee4be90e412ae54
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High-speed manufacturing of highly regular femtosecond laser-induced periodic surface structures: physical origin of regularity

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