Dresden 2011 – scientific programme
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O: Fachverband Oberflächenphysik
O 36: Poster Session II (Metals; Nanostructures at surfaces; Surface or interface magnetism; Spin-Orbit Interaction at Surfaces; Electron and spin dynamics; Surface dynamics; Methods; Theory and computation of electronic structure)
O 36.71: Poster
Tuesday, March 15, 2011, 18:30–22:00, P4
Conservation of hexagonal order during photochemical particle growth and its application to SiO2 nanostructuring — •Axel Seidenstücker, Burcin Özdemir, Alfred Plettl, and Paul Ziemann — Universität Ulm, Institut für Festkörperphysik, 89069 Ulm (Germany)
Recently, we reported on a photochemically controlled growth of metallic nanoparticles which initially formed hexagonally ordered arrays [1].
During the growth process, however, some of the particles are displaced from their original position.
In this contribution we will report on how the hexagonal order can be conserved and the particle enlargement extended up to 50 nm. It turned out that coating the Au seed particles by a thin layer of OTMS their hexagonal order is practically conserved during each photochemical growth step. The resulting ordered and size controlled particle arrays where used as a starting point for subsequent nanostructuring SiO2 surfaces by reactive ion etching (RIE). In this way, well defined nanoscaled pillars and pores are obtained.
T. Härtling, A. Seidenstücker, P. Olk, A. Plettl, P. Ziemann and L. M. Eng, Nanotechnology 21, 145309 (2010)