Dresden 2014 – scientific programme
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MM: Fachverband Metall- und Materialphysik
MM 34: Poster Session
MM 34.21: Poster
Tuesday, April 1, 2014, 18:00–20:00, P4
Investigation of Nanoparticle Growth in a Dusty Acetylene Plasma — •Alexander Hinz1, Erik von Wahl2, Maik Fröhlich2, Thomas Strunskus1, and Holger Kersten2 — 1CAU zu Kiel, Technische Fakultät, LS Materialverbunde, Kaiserstraße 2, 24143 Kiel — 2CAU zu Kiel, IEAP, AG Plasmatechnologie, Leibnizstraße 11-19, 24098 Kiel
Dusty plasmas are not only of fundamental interest but also of practical importance. Formation in plasmas is seen as a new route to prepare nanoparticles of well defined size and composition. While the particle formation in silane plasmas is well investigated it is less understood in acetylene plasmas. In particular the early stages of the particle growth are not well investigated since they are experimentally inaccessible by standard methods like Mie-Scattering. In order to get a better inside in the early stages of the particle growth a novel collection method based on neutral drag was tested. Size-distributions of the nanoparticles at different points of the growth cycle were determined ex-situ and correlated with in-situ measurement of the bias voltage of the capacitively-coupled discharge plasma. Additionally, preliminary experiments employing grazing-incidence small angle X-ray scattering (GISAXS) were performed ex-situ on the collected carbonaceous nanoparticles.