Hannover 2020 – wissenschaftliches Programm

Die DPG-Frühjahrstagung in Hannover musste abgesagt werden! Lesen Sie mehr ...

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

P: Fachverband Plasmaphysik

P 16: Poster Session 3

P 16.24: Poster

Mittwoch, 11. März 2020, 16:30–18:30, Empore Lichthof

Formation of Zn Nanostructures using Low Energy Ion Beam Sputtering — Alexander Prediger, •Mathis Klette, Thomas Trottenberg, and Holger Kersten — Institute of Experimental and Applied Physics, University of Kiel, Germany

The formation of dune, ripple or dot-like nanostructures on surfaces by low energy ion beam sputtering has been subject to intensive study in the past few decades [1][2]. Most of the research focused on the creation of nanostructures on single crystalline semiconductor materials, such as GaSb, InP, and Si. Only a few studies were performed for metals or amorphous materials.

In this work, we present nanostructures synthesized by an ion beam directed onto amorphous zinc targets. The zinc targets were treated by a 1200 eV argon ion beam for up to 60 minutes under different angles of incidence. The properties and morphology of the samples were studied with contact angle measurements, scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The SEM images show surfaces covered in a grid of tilted needle-like structures. Under certain conditions, samples show spherical clusters at the tip of the needle, likely caused by strong electric fields. The experiment allows to study the influence of ion species, target materials, pressure, ion beam energy, and processing time on these needle-like structures.

[1] R. Gago, et al., Nanotechnology 13, 304-308 (2002)

[2] F. Frost, A. Schindler, and F. Bigl, Phys. Rev. Lett. 85, 4116-4119 (2000).