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Thermochemical laser-induced periodic surface structures formation by femtosecond laser on hf thin films in air and vacuum. / Belousov, Dmitrij A.; Bronnikov, Kirill A.; Okotrub, Konstantin A. et al.
In: Materials, Vol. 14, No. 21, 6714, 01.11.2021.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Thermochemical laser-induced periodic surface structures formation by femtosecond laser on hf thin films in air and vacuum
AU - Belousov, Dmitrij A.
AU - Bronnikov, Kirill A.
AU - Okotrub, Konstantin A.
AU - Mikerin, Sergey L.
AU - Korolkov, Victor P.
AU - Terentyev, Vadim S.
AU - Dostovalov, Alexander V.
N1 - Funding Information: Funding: The work was funded by State budget of the Russian Federation(IAE project No 121041500060-2) in terms of processing SEM images and by the Russian Science Foundation grant (No. 21-72-20162) regarding experiments on the TLIPSS formation, characterization (SEM, micro-Raman spectroscopy, atomic-force microscopy) and analysis. Publisher Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2021/11/1
Y1 - 2021/11/1
N2 - 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.
AB - 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.
KW - Digital image processing
KW - Hafnium films
KW - Laser materials processing
KW - Laser-induced periodic surface structures
KW - Microscopy
UR - http://www.scopus.com/inward/record.url?scp=85119273018&partnerID=8YFLogxK
U2 - 10.3390/ma14216714
DO - 10.3390/ma14216714
M3 - Article
C2 - 34772238
AN - SCOPUS:85119273018
VL - 14
JO - Materials
JF - Materials
SN - 1996-1944
IS - 21
M1 - 6714
ER -
ID: 34705710