Bremen 2017 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
P: Fachverband Plasmaphysik
P 22: Theory and Modelling II
P 22.10: Poster
Mittwoch, 15. März 2017, 16:30–18:30, HS Foyer
Simulation of metal cluster growth on a thin polymer film during sputter deposition — Jan-Willem Abraham1, Thomas Strunskus2, •Michael Bonitz1, and Franz Faupel2 — 1ITAP, CAU Kiel — 2Institut für Materialwissenschaft, CAU Kiel
The fabrication of metal-polymer nanocomposites with tailored optoelectronic properties has been a challenge since the early days of nanotechnology. Under typical conditions in PVD experiments, crucial properties such as composition, size and shape of the nanoparticles evolve in a self-organized way. Computer simulations can help to improve the understanding of the relevant processes, but the required length and time scales pose big challenges. In this work, we present
an approach based on Langevin dynamics that allows us
to microscopically investigate the growth of gold and bi-metallic Ag-Cu clusters on polymer surfaces on experimentally relevant time scales of seconds [1].
The method takes into account the deposition of single metal atoms, diffusion of the particles on the surface, desorption of atoms as well the creation of surface defects caused by the impingement of ions that are emitted from the plasma environment. Our results are in good agreement with recent GISAXS experiments that studied sputtering of gold on a thin polystyrene film in real time [2]. Finally, we calculate the intensity of
scattered X-rays as well as the UV-Vis
absorption spectrum for our simulated structures.
[1]
J. W. Abraham et al., J. Appl. Phys. 119, 185301 (2016).
[2]
M. Schwartzkopf et al., ACS Appl. Mater. Interf. 7, 13547 (2015).
This work is supported by the DFG via SFB-TR 24.