Thermochemical Laser-Induced Periodic Surface Structures Formation by Femtosecond Laser on Hf Thin Films in Air and Vacuum

Thermochemical laser-induced periodic surface structures (TLIPSS) are a relatively new type of periodic structures formed in the focal area of linear polarized laser radiation by the thermally stimulated reaction of oxidation. The high regularity of the structures and the possibility of forming high...

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Autores principales:	Dmitrij A. Belousov, Kirill A. Bronnikov, Konstantin A. Okotrub, Sergey L. Mikerin, Victor P. Korolkov, Vadim S. Terentyev, Alexander V. Dostovalov
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	laser-induced periodic surface structures hafnium films digital image processing microscopy laser materials processing Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/342e3bf0a49c45aaa85bcdebd6ea7a16
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spelling	oai:doaj.org-article:342e3bf0a49c45aaa85bcdebd6ea7a162021-11-11T18:12:30ZThermochemical Laser-Induced Periodic Surface Structures Formation by Femtosecond Laser on Hf Thin Films in Air and Vacuum10.3390/ma142167141996-1944https://doaj.org/article/342e3bf0a49c45aaa85bcdebd6ea7a162021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6714https://doaj.org/toc/1996-1944Thermochemical laser-induced periodic surface structures (TLIPSS) are a relatively new type of periodic structures formed in the focal area of linear polarized laser radiation by the thermally stimulated reaction of oxidation. The high regularity of the structures and the possibility of forming high-ordered structures over a large area open up possibilities for the practical application for changing the optical and physical properties of materials surface. Since the mechanism of formation of these structures is based on a chemical oxidation reaction, an intriguing question involves the influence of air pressure on the quality of structure formation. This paper presents the results on the TLIPSS formation on a thin hafnium film with fs IR laser radiation at various ambient air pressures from 4 Torr to 760 Torr. Despite the decrease in the oxygen content in the ambient environment by two orders of magnitude, the formation of high-ordered TLIPSS (dispersion in the LIPSS orientation angle δθ < 5°) with a period of ≈700 nm occurs within a wide range of parameters variation (laser power, scanning speed). This behavior of TLIPSS formation is in agreement with experimental data obtained earlier on the study of the kinetics of high-temperature oxidation of hafnium at various oxygen pressures.Dmitrij A. BelousovKirill A. BronnikovKonstantin A. OkotrubSergey L. MikerinVictor P. KorolkovVadim S. TerentyevAlexander V. DostovalovMDPI AGarticlelaser-induced periodic surface structureshafnium filmsdigital image processingmicroscopylaser materials processingTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6714, p 6714 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	laser-induced periodic surface structures hafnium films digital image processing microscopy laser materials processing Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	laser-induced periodic surface structures hafnium films digital image processing microscopy laser materials processing Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Dmitrij A. Belousov Kirill A. Bronnikov Konstantin A. Okotrub Sergey L. Mikerin Victor P. Korolkov Vadim S. Terentyev Alexander V. Dostovalov Thermochemical Laser-Induced Periodic Surface Structures Formation by Femtosecond Laser on Hf Thin Films in Air and Vacuum
description	Thermochemical laser-induced periodic surface structures (TLIPSS) are a relatively new type of periodic structures formed in the focal area of linear polarized laser radiation by the thermally stimulated reaction of oxidation. The high regularity of the structures and the possibility of forming high-ordered structures over a large area open up possibilities for the practical application for changing the optical and physical properties of materials surface. Since the mechanism of formation of these structures is based on a chemical oxidation reaction, an intriguing question involves the influence of air pressure on the quality of structure formation. This paper presents the results on the TLIPSS formation on a thin hafnium film with fs IR laser radiation at various ambient air pressures from 4 Torr to 760 Torr. Despite the decrease in the oxygen content in the ambient environment by two orders of magnitude, the formation of high-ordered TLIPSS (dispersion in the LIPSS orientation angle δθ < 5°) with a period of ≈700 nm occurs within a wide range of parameters variation (laser power, scanning speed). This behavior of TLIPSS formation is in agreement with experimental data obtained earlier on the study of the kinetics of high-temperature oxidation of hafnium at various oxygen pressures.
format	article
author	Dmitrij A. Belousov Kirill A. Bronnikov Konstantin A. Okotrub Sergey L. Mikerin Victor P. Korolkov Vadim S. Terentyev Alexander V. Dostovalov
author_facet	Dmitrij A. Belousov Kirill A. Bronnikov Konstantin A. Okotrub Sergey L. Mikerin Victor P. Korolkov Vadim S. Terentyev Alexander V. Dostovalov
author_sort	Dmitrij A. Belousov
title	Thermochemical Laser-Induced Periodic Surface Structures Formation by Femtosecond Laser on Hf Thin Films in Air and Vacuum
title_short	Thermochemical Laser-Induced Periodic Surface Structures Formation by Femtosecond Laser on Hf Thin Films in Air and Vacuum
title_full	Thermochemical Laser-Induced Periodic Surface Structures Formation by Femtosecond Laser on Hf Thin Films in Air and Vacuum
title_fullStr	Thermochemical Laser-Induced Periodic Surface Structures Formation by Femtosecond Laser on Hf Thin Films in Air and Vacuum
title_full_unstemmed	Thermochemical Laser-Induced Periodic Surface Structures Formation by Femtosecond Laser on Hf Thin Films in Air and Vacuum
title_sort	thermochemical laser-induced periodic surface structures formation by femtosecond laser on hf thin films in air and vacuum
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/342e3bf0a49c45aaa85bcdebd6ea7a16
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Thermochemical Laser-Induced Periodic Surface Structures Formation by Femtosecond Laser on Hf Thin Films in Air and Vacuum

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