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This article is cited in 51 scientific papers (total in 51 papers)
Nanostructures
Surface nanotexturing of tantalum by laser ablation in water
E. V. Barminaa, M. Barberogloubc, V. Zorbabc, A. V. Simakina, È. Stratakiscd, C. Fotakisbc, G. A. Shafeeva a Wave Research Center of Prokhorov General Physics Institute, Russian Academy of Sciences
b Physics Department, University of Crete, Greece
c Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, Greece
d Materials Science and Technology Department, University of Crete, Greece
Abstract:
Surface nanotexturing of tantalum by ablation with short laser pulses in water has been studied experimentally using three ablation sources: a neodymium laser with a pulse duration of 350 ps, an excimer laser (248 nm) with a pulse duration of 5 ps and a Ti:sapphire laser with a pulse duration of 180 fs. The morphology of the nanotextured surfaces has been examined using a nanoprofilometer and field emission scanning electron microscope. The results demonstrate that the average size of the hillocks produced on the target surface depends on the laser energy density and is ~200 nm at an energy density approaching the laser-melting threshold of tantalum and a pulse duration of 350 ps. Their surface density reaches 106 cm-2. At a pulse duration of 5 ps, the average hillock size is 60 — 70 nm. Nanotexturing is accompanied by changes in the absorption spectrum of the tantalum surface in the UV and visible spectral regions. The possible mechanisms of surface nanotexturing and potential applications of this effect are discussed.
Received: 14.04.2008
Citation:
E. V. Barmina, M. Barberoglou, V. Zorba, A. V. Simakin, È. Stratakis, C. Fotakis, G. A. Shafeev, “Surface nanotexturing of tantalum by laser ablation in water”, Kvantovaya Elektronika, 39:1 (2009), 89–93 [Quantum Electron., 39:1 (2009), 89–93]
Linking options:
https://www.mathnet.ru/eng/qe13877 https://www.mathnet.ru/eng/qe/v39/i1/p89
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