Laser irradiation of 10×(Ni/Ti)/Si multilayers at different wavelengths
| Autor: | Sandra Petrović, Davor Peruško, B. M. Jelenković, Dejan Pantelić, Branislav Salatić, Miha Čekada |
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| Rok vydání: | 2016 |
| Předmět: |
Nanostructure
Materials science medicine.medical_treatment Analytical chemistry Intermetallic 02 engineering and technology 01 natural sciences law.invention Optics law 0103 physical sciences medicine Irradiation Electrical and Electronic Engineering Thin film Ni/Ti multilayers Dual-wavelength pulses 010302 applied physics Laser ablation business.industry 021001 nanoscience & nanotechnology Laser Ablation Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Wavelength laser ablation sense organs 0210 nano-technology business Crater formation Mosaic nanostructures |
| Zdroj: | Optical and Quantum Electronics |
| ISSN: | 1572-817X 0306-8919 |
| DOI: | 10.1007/s11082-016-0503-4 |
| Popis: | A study of the effects of laser irradiation on the morphology and composition of Ni/Ti multilayers induced by nanosecond laser pulses at different wavelengths is reported. Irradiation of complex 109(Ni/Ti)/Si sample was done by a Nd:YAG laser which operate at a 1064 nm wavelength, frequency doubled wavelength (532 nm) and dual-wavelength (1064 and 532 nm). The following surface morphological changes were observed: (1) ablation of the thin film during the first laser pulse and (2) appearance of some nanostructures (mosaic structure) in the irradiated region. After action of one pulse, the boundary of damage area was relatively sharp at low pulse energy, whereas it was diffuse after irradiation with higher energy per pulse. The results obtained show that laser irradiation induced mixing between Ni and Ti layers which creates conditions for the formation of intermetallic compounds. A numerical model was used to predict ablation depths and temperatures inside the material during the time. The model prediction shows a close agreement with experimental data. |
| Databáze: | OpenAIRE |
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