Papaléo, R. M. ; Thomaz, R. ; Gutierres, L. I. ; Menezes, V. M. de ; Severin, D. ; Trautmann, C. ; Tramontina, D. ; Bringa, E. M. ; Grande, P. L. (2015)
Confinement Effects of Ion Tracks in Ultrathin Polymer Films.
In: Physical Review Letters, 114 (11)
doi: 10.1103/PhysRevLett.114.118302
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
We show direct experimental evidence that radiation effects produced by single MeV heavy ions on a polymer surface are weakened when the length of the ion track in the material is confined into layers of a few tens of nanometers. Deviation from the bulk (thick film) behavior of ion-induced craters starts at a critical thickness as large as ∼40 nm, due to suppression of long-range additive effects of excited atoms along the track. Good agreement was found between the experimental results, molecular dynamic simulations, and an analytical model.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2015 |
| Autor(en): | Papaléo, R. M. ; Thomaz, R. ; Gutierres, L. I. ; Menezes, V. M. de ; Severin, D. ; Trautmann, C. ; Tramontina, D. ; Bringa, E. M. ; Grande, P. L. |
| Art des Eintrags: | Bibliographie |
| Titel: | Confinement Effects of Ion Tracks in Ultrathin Polymer Films |
| Sprache: | Englisch |
| Publikationsjahr: | 19 März 2015 |
| Verlag: | APS Publications |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physical Review Letters |
| Jahrgang/Volume einer Zeitschrift: | 114 |
| (Heft-)Nummer: | 11 |
| DOI: | 10.1103/PhysRevLett.114.118302 |
| Kurzbeschreibung (Abstract): | We show direct experimental evidence that radiation effects produced by single MeV heavy ions on a polymer surface are weakened when the length of the ion track in the material is confined into layers of a few tens of nanometers. Deviation from the bulk (thick film) behavior of ion-induced craters starts at a critical thickness as large as ∼40 nm, due to suppression of long-range additive effects of excited atoms along the track. Good agreement was found between the experimental results, molecular dynamic simulations, and an analytical model. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Ionenstrahlmodifizierte Materialien |
| Hinterlegungsdatum: | 02 Jul 2015 08:32 |
| Letzte Änderung: | 20 Aug 2021 12:13 |
| PPN: | |
| Sponsoren: | The agencies FAPERGS, CAPES, and CNPq (Brazil), DAAD (Germany), and CONICET (Argentina) are acknowledged for financial support. |
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