Wolfgang Harbich

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Related publications (28)

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Effect of the TiO2 Reduction State on the Catalytic CO Oxidation on Deposited Size-Selected Pt Clusters

Harald Brune, Wolfgang Harbich, Simon Bonanni

The catalytic activity of deposited Pt-7 clusters has been studied as a function of the reduction state of the TiO2(110)-(1 x 1) support for the CO oxidation reaction. While a slightly reduced support gives rise to a high catalytic activity of the adpartic ...

2012

Absorption and fluorescence spectra of Ar-matrix-isolated Ag3 clusters

Wolfgang Harbich, Christoph Sieber

The absorption and fluorescence spectra of silver trimers isolated in an Ar matrix show the existence of three distinct lattice sites whereby the population of each site depends on the conditions of matrix preparation. Irradiation of certain absorption ban ...

Elsevier2000

UV-visible absorption of small gold clusters in neon: Au-n (n=1-5 and 7-9)

Wolfgang Harbich, Sylvain Lecoultre, Alexandre Rydlo

We present optical absorption spectra in the UV-visible range (1.5 eV < E < 6 eV) for mass selected neutral gold clusters Au-n (n = 1-5 and 7-9) embedded in solid Ne at 7 K. The experimental spectra are compared with time-dependent density functional calcu ...

American Institute of Physics2011

Controlled deposition of size-selected silver nanoclusters

Klaus Kern, Harald Brune, Wolfgang Harbich

Variable-temperature scanning tunneling microscopy was used to study the effect of kinetic cluster energy and rare-gas buffer layers on the deposition process of size-selected silver nanoclusters on a platinum(111) surface. Clusters with impact energies of ...

American Association for the Advancement of Science1996

Spectroscopy of 3, 4, 9, 10-perylenetetracarboxylic dianhydride (PTCDA) attached to rare gas samples: Clusters vs. bulk matrices. II. Fluorescence emission spectroscopy

Wolfgang Harbich, Alexandre Rydlo, Stefan Minniberger

The interaction between 3, 4, 9, 10-perylenetetracarboxylic dianhydride (PTCDA) molecules and solid rare gas samples is studied by means of fluorescence emission spectroscopy. Laser-excited PTCDA-doped large argon, neon, and para-hydrogen clusters along wi ...

American Institute of Physics2012

Intense fluorescence of Au-20

Harald Brune, Wolfgang Harbich, Chongqi Yu

Ligand-protected Au clusters are non-bleaching fluorescence markers in bio- and medical applications. Here we show that their fluorescence can be an intrinsic property of the Au cluster itself. We find a very intense and sharp fluorescence peak located at ...

American Institute of Physics2017

Reaction-Induced Cluster Ripening and Initial Size-Dependent Reaction Rates for CO Oxidation on Pt-n/TiO2(110)-(1x1)

Harald Brune, Wolfgang Harbich, Simon Bonanni

We determined the CO oxidation rates for size-selected Pt-n (n is an element of {3,7,10}) clusters deposited onto TiO2(110). In addition, we investigated the cluster morphologies and their mean sizes before and after the reaction. While the clusters are fa ...

American Chemical Society2014

Erratum: “Intense fluorescence of Au20”

Harald Brune, Wolfgang Harbich, Chongqi Yu

American Institute of Physics2017