Dresden 2020 – wissenschaftliches Programm
Die DPG-Frühjahrstagung in Dresden musste abgesagt werden! Lesen Sie mehr ...
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
O: Fachverband Oberflächenphysik
O 55: Poster Session - Nanostructured Surfaces and Thin Films
O 55.2: Poster
Dienstag, 17. März 2020, 18:15–20:00, P2/2OG
Surface Modifications by Ion-Induced Plasma Expansion — •Ayman Sherif El-Said1 and Waleed Moslem2 — 1Physics Department, Dhahran 31261, Saudi Arabia — 2The British University in Egypt (BUE), Cairo, Egypt
The development of ion sources and accelerators technology offers a new window for the creation of surface nanostructures in an efficient and accurate way. These nanostructures are fabricated without any further chemical treatment, which is common in the traditional lithographic methods. The driving force for the production of nanostructures by single ion impact is mainly the energy deposition of the incident ion in the utilized material [1, 2]. Therefore, it is found that MeV C60 cluster ions enables the creation of nanohillocks of size larger than the ones produced by GeV monoatomic ions. Furthermore, slow highly charged ions were able to create nanostructures similar to the ones created by swift heavy ions [3, 4]. Here, we introduce plasma expansion as a new approach for elucidating the formation mechanism of ion-induced nanostructures [5]. The role of both potential energy and kinetic energy of the impinging ions for the creation of nanostructures by ion-induced plasma is discussed.
[1] E. Gruber, L. Bergen, P. Salou, E. Lattouf, C. Grygiel, Y.Y. Wang, A. Benyagoub, D. Levavasseur, J. Rangama, H. Lebius, B. Ban-d’Etat, M. Schleberger, F. Aumayr, J. Phys.: Cond. Mat. 30, 285001 (2018).
[2] O. Ochedowski, O. Osmani, M. Schade, B. K. Bussmann, B. Ban-d’Etat, H. Lebius, and M. Schleberger, Nat. Comm. 5, 3913 (2014).
[3] A.S. El-Said, R.A. Wilhelm, R. Heller, M. Sorokin, S. Facsko, F. Aumayr, Phys. Rev. Lett. 117, 126101 (2016).
[4] Richard A. Wilhelm, Ayman S. El-Said, Franciszek Krok, Rene Heller, Elisabeth Gruber, Friedrich Aumayr, Stefan Facsko, Prog. Surf. Sci. 90, 377 (2015).
[5] W.M. Moslem, A.S. El-Said, R. Sabry, A. Shalouf, S. K. El-Labany, H. Phys. Lett. A 381, 102 (2017).