Regensburg 2007 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

O: Fachverband Oberflächenphysik

O 39: Nanostructures at Surfaces IV (Dots, Particles, Clusters, Arrays)

O 39.5: Vortrag

Mittwoch, 28. März 2007, 16:45–17:00, H36

Ar ion sputtering induced nanostructure on the Ag(110) — •Günther Weidlinger, Lidong Sun, José Manuel Flores-Camacho, Michael Hohage, and Peter Zeppenfeld — Institut für Experimentalphysik, Johannes Kepler Universität Linz, Linz, Austria

The Ag(110) surface was exposed to Ar ion bombardment and its effects on the surface morphology and optical anisotropic response were monitored by means of Atomic Force Microscopy (AFM) and Reflectance Difference Spectroscopy (RDS), respectively. The AFM studies show the formation of well ordered ripple structures. Depending on the sputtering condition either 1D or 2D ripple structures could be created. Especially the 2D ripple structure is quite stable both in Ultra High Vacuum (UHV) and in air at room temperature. The corresponding RD spectra exhibit single (double) pronounced peak for the 1D (2D) ripple structures, which is associated to the coupling of photons with surface plasmon mediated by the diffraction of the ripple structures. The direction and period of the ripple structure determined by the sign and the peak positions of RD spectrum agrees well with what is found from AFM demonstrating that RDS is a powerful tool for the characterization of nanostructured surfaces.