Femtosecond laser-induced periodic surface structure on the Ti-based nanolayered thin films(Article)
- aInstitute of Nuclear Science - Vinča, University of Belgrade, POB 522, 11001 Belgrade, Serbia
- bInstitute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, P.O. Box 1527, Gr-711 10 Heraklion, Greece
- cDepartment of Materials Science and Technology, University of Crete, 710 03 Heraklion, Crete, Greece
- dRuder Bošković Institute, P.O. Box 180, 10002 Zagreb, Croatia
- eJožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
- fDepartment of Physics, University of Crete, 714 09 Heraklion, Crete, Greece
- gInstitute of Physics, University of Belgrade, Pregrevica 118, 11080 Belgrade, Serbia
Abstract
Laser-induced periodic surface structures (LIPSSs) and chemical composition changes of Ti-based nanolayered thin films (Al/Ti, Ni/Ti) after femtosecond (fs) laser pulses action were studied. Irradiation is performed using linearly polarized Ti:Sapphire fs laser pulses of 40 fs pulse duration and 800 nm wavelength. The low spatial frequency LIPSS (LSFL), oriented perpendicular to the laser polarization with periods slightly lower than the irradiation wavelength, was typically formed at elevated laser fluences. On the contrary, high spatial frequency LIPSS (HSFL) with uniform period of 155 nm, parallel to the laser light polarization, appeared at low laser fluences, as well as in the wings of the Gaussian laser beam distribution for higher used fluence. LSFL formation was associated with the material ablation process and accompanied by the intense formation of nanoparticles, especially in the Ni/Ti system. The composition changes at the surface of both multilayer systems in the LSFL area indicated the intermixing between layers and the substrate. Concentration and distribution of all constitutive elements in the irradiated area with formed HSFLs were almost unchanged. © 2013 AIP Publishing LLC.
Indexed keywords
| Engineering uncontrolled terms | Chemical compositionsComposition changesFemtosecond (fs) laserGaussian laser beamHigh spatial frequencyIrradiation wavelengthLaser-induced periodic surface structuresLow-spatial frequency |
|---|---|
| Engineering controlled terms: | Film preparationIrradiationSapphireThin filmsUltrafast lasers |
| Engineering main heading: | Ultrashort pulses |
Funding details
| Funding sponsor | Funding number | Acronym |
|---|---|---|
| Javna Agencija za Raziskovalno Dejavnost RS | ARRS | |
| OI 172019,III 45016,45016,172019 | ||
| European Cooperation in Science and Technology | MP1203 | COST |
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1
This research was supported by the Ministry of Education and Science of the Republic of Serbia, Contract Nos. III 45016 and OI 172019, Slovenian Research Agency, and the Ministry of Science, Education, and Sports of the Republic of Croatia. We also acknowledge the support from COST Action (Project No. MP1203).
- ISSN: 00218979
- CODEN: JAPIA
- Source Type: Journal
- Original language: English
- DOI: 10.1063/1.4848016
- Document Type: Article
Institute of Nuclear Science - Vinča, University of Belgrade, POB 522, Serbia
© Copyright 2014 Elsevier B.V., All rights reserved.
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