Počet záznamů: 1
Mechanisms of surface nanostructuring of Al2O3 and MgO by grazing incidence irradiation with swift heavy ions
- 1.0579997 - ÚFP 2024 RIV NL eng J - Článek v odborném periodiku
Karlusic, M. - Rymzhanov, R. A. - O'Connell, J. H. - Bröckers, L. - Luketic, K.T. - Siketić, Z. - Fazinic, S. - Dubček, P. - Jakšic, M. - Provatas, G. - Medvedev, Nikita - Volkov, A.E. - Schleberger, M.
Mechanisms of surface nanostructuring of Al2O3 and MgO by grazing incidence irradiation with swift heavy ions.
Surfaces and Interfaces. Roč. 27, December (2021), č. článku 101508. ISSN 2468-0230. E-ISSN 2468-0230
Grant CEP: GA MŠMT LTT17015; GA MŠMT(CZ) LM2015083
Institucionální podpora: RVO:61389021
Klíčová slova: Atomic force microscopy * Ion irradiation * Irradiation effects * Md simulation * Swift heavy ion
Obor OECD: Fluids and plasma physics (including surface physics)
Impakt faktor: 6.137, rok: 2021
Způsob publikování: Omezený přístup
https://www.sciencedirect.com/science/article/pii/S246802302100585X?via%3Dihub
We experimentally discovered that Al2O3 and MgO exhibit well-pronounced nanometric modifications on the surfaces when irradiated under grazing incidence with 23 MeV I beam, in contrast to normal incidence irradiation with the same ion beam when no damage was found. Moreover, ions in these two materials produce notably different structures: grooves surrounded with nanohillocks on MgO surfaces vs. smoother, roll-like discontinuous structures on the surfaces of Al2O3. To explain these results, detailed numerical simulations were performed. We identified that a presence of the surface inhibits recrystallization process, thereby preventing transient tracks from recovery, and thus forming observable nanopatterns. Furthermore, a difference in the viscosities in molten states in Al2O3 vs. MgO explains the differences in the created nanostructures. Our results thus provide a deeper understanding of the fundamental processes of surface nanostructuring, potentially allowing for controlled production of periodic surface nanopatterns.
Trvalý link: https://hdl.handle.net/11104/0348786
Počet záznamů: 1