Regensburg 2010 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 59: Poster Session II (Nanostructures at surfaces: Dots, particles, clusters; Nanostructures at surfaces: arrays; Nanostructures at surfaces: Wires, tubes; Nanostructures at surfaces: Other; Plasmonics and nanooptics; Metal substrates: Epitaxy and growth; Metal substrates: Solid-liquid interfaces; Metal substrates: Adsoprtion of organic / bio molecules; Metal substrates: Adsoprtion of inorganic molecules; Metal substrates: Adsoprtion of O and/or H; Metal substrates: Clean surfaces; Density functional theory and beyond for real materials)
O 59.7: Poster
Mittwoch, 24. März 2010, 17:45–20:30, Poster B1
Photochemical particle growth in ordered two-dimensional arrays — •Axel Seidenstücker1, Thomas Härtling2, Alfred Plettl1, Phillip Olk2, Paul Ziemann1, and Lukas Eng2 — 1Universität Ulm, Institut für Festkörperphysik, 89069 Ulm (Germany) — 2TU Dresden, Institut für Angewandte Photophysik, 01062 Dresden (Germany)
A novel procedure is reported which allows the controlled manipulation of the size of metal nanoparticles. The technique is demonstrated here on two-dimensional particle arrays of gold nanoparticles (diameter 10 nm), fabricated by means of diblock copolymer micelle lithography (BCML), but can in principle be applied to any kind of ordered structures. The particles are used as nucleation centers in seed-mediated photochemical metal deposition, whereby the particle diameter increases. Repeatedly combining photochemical growth with annealing steps facilitates controlling the particle shape as well as their uniformity.