H
Hans-Gerd Boyen
Researcher at University of Hasselt
Publications - 153
Citations - 9849
Hans-Gerd Boyen is an academic researcher from University of Hasselt. The author has contributed to research in topics: X-ray photoelectron spectroscopy & Thin film. The author has an hindex of 39, co-authored 149 publications receiving 8512 citations. Previous affiliations of Hans-Gerd Boyen include University of Ulm & University of Duisburg-Essen.
Papers
More filters
Journal ArticleDOI
Oxidation-Resistant Gold-55 Clusters
Hans-Gerd Boyen,G. Kästle,F. Weigl,B. Koslowski,Christof P. Dietrich,Paul J. Ziemann,Joachim P. Spatz,S. Riethmüller,Christoph Hartmann,Martin Möller,G. Schmid,M. G. Garnier,Peter Oelhafen +12 more
TL;DR: X-ray photoelectron spectroscopy showed a maximum oxidation resistance for “magic-number” clusters containing 55 gold atoms, which suggests that gold-55 clusters may act as especially effective oxidation catalysts, such as for oxidizing carbon monoxide.
Journal ArticleDOI
Assessing the toxicity of Pb- and Sn-based perovskite solar cells in model organism Danio rerio
Aslihan Babayigit,Dinh Duy Thanh,Anitha Ethirajan,Jean Manca,Marc Muller,Hans-Gerd Boyen,Bert Conings +6 more
TL;DR: A case study with systematic comparison regarding the environmental impact of Pb- and Sn-based perovskites, using zebrafish (Danio Rerio) as model organism is provided and it is shown that Sn basedperovskite may not be the ideal Pb surrogate.
Journal ArticleDOI
Nanostructured surfaces from size-selected clusters.
TL;DR: The deposition of ionized beams of size-selected atomic clusters onto well-defined substrates represents a new method of preparing nanostructured surfaces, with lateral feature sizes in the range 1–10 nm, and advances in diblock copolymer techniques allow the preparation of ordered two-dimensional arrays of clusters.
Journal ArticleDOI
Micellar Nanoreactors—Preparation and Characterization of Hexagonally Ordered Arrays of Metallic Nanodots†
G. Kästle,Hans-Gerd Boyen,F. Weigl,Gunther Lengl,Thomas Herzog,Thomas Herzog,Paul J. Ziemann,S. Riethmüller,Oliver Mayer,Christoph Hartmann,Joachim P. Spatz,Martin Möller,Martin Möller,Masaki Ozawa,Florian Banhart,M. G. Garnier,Peter Oelhafen +16 more
TL;DR: In this article, the preparation of hexagonally ordered metallic nanodots was studied in detail with emphasis on the chemical state of the resulting particles, where the reverse micelles themselves are capable of ligating defined amounts of a metal salt within their cores, acting as nanoreactors.
Journal ArticleDOI
Influence of iron–silicon interaction on the growth of carbon nanotubes produced by chemical vapor deposition
T. de los Arcos,F. Vonau,M. G. Garnier,Verena Thommen,Hans-Gerd Boyen,Peter Oelhafen,Marcel Düggelin,D. Mathis,Richard Guggenheim +8 more
TL;DR: In this paper, a thin layer of dense titanium nitride between the silicon substrate and the iron catalyst effectively prevents the formation of the silicide phase and consequently improves the carbon nanotubes growth.