Oliver Bünermann How Can We Experimentally Determine Why Hydrogen Atoms Are Absorbed on Metal Surfaces?

Oliver Bünermann is the Leader of the atom-surface scattering dynamics Research Group at the Max Planck Institute for Biophysical Chemistry and the University of Göttingen Institute for Physical Chemistry (Germany). After receiving his diploma and PhD from the Faculty of Physics at the University of Bielefeld, Bünermann went on to do post-doctoral research at the Albert-Ludwigs-Universität Freiburg and the University of California, Berkley. As the leader of the atom-surface scattering dynamics research group, Bünermann investigates hydrogen atom scattering through collision experiments. This will provide the background for developing new theoretical approaches to surface chemistry.

Area of Research

Biophysical Chemistry, Dynamics at Surfaces

Sven Kaufmann, Dirk Schwarzer, Christian Reichardt, Alec M. Wodtke and Oliver Bünermann. "Generation of Ultra-Short Hydrogen Atom Pulses by Bunch-Compression Photolysis." Nature Communications 5 (2014): 5373.  
Oliver Bünermann, Oleg Kornilov, Daniel J. Haxton, Stephen R. Leone, Daniel M. Neumark and Oliver Gessner. "Ultrafast Probing of Ejection Dynamics of Rydberg Atoms and Molecular Fragments from Electronically Excited Helium Nanodroplets." Journal of Chemical Physics 137 (2012): 214302.  
Oliver Bünermann, Georg Droppelmann, Alberto Hernando, Ricardo Mayol and Frank Stienkemeier. "Unraveling the Absorption Spectra of Alkali Metal Atoms Attached to Helium Nanodroplets." The Journal of Physical Chemistry A 111 (2007): 12684-12694.  

since 2010

Group Leader "Atom-Surface Scattering Dynamics"

University of Göttingen (Georg-August-Universität Göttingen) (more details)

Institute for Physical Chemistry

2009-2010

Post-Doctoral Researcher

University of California, Berkeley

Department of Chemistry

2006-2009

Post-Doctoral Researcher

Albert Ludwigs University of Freiburg (Albert-Ludwigs-Universität Freiburg)

Faculty of Physics

2006

PhD in Physics

University of Bielefeld (Universität Bielefeld)

Faculty of Physics

2003

Diploma in Physics

University of Bielefeld (Universität Bielefeld)

Faculty of Physics

German Bunsen Society for Physical Chemistry (Deutsche Bunsen-Gesellschaft für physikalische Chemie) (DBG)

German Physical Society (Deutsche Physikalische Gesellschaft) (DPG)

Fellowships

Executive Director of the International Center for Advanced Studies of Energy Conversion (ICASEC), Georg-August University of Göttingen (since 2015)

Forschungsstipendium, DFG (2009)

Prizes

PhD Thesis Award 2007 – Westfälisch Lippischen Universitätsgesellschaft (2008)

University of Göttingen (Georg-August-Universität Göttingen)


"Founded in 1737, Georg-August-Universität Göttingen is a research university of international renown with strong focuses in research-led teaching. The University is distinguished by the rich diversity of its subject spectrum particularly in the humanities, its excellent facilities for the pursuit of scientific research, and the outstanding quality of the areas that define its profile. From 2007 to 2012 Georg-August-Universität Göttingen was rewarded funding from the Initiative of Excellence of the German Federal and State Governments with its institutional strategy for the future entitled “Göttingen.Tradition – Innovation – Autonomy”. The University was able to realise all measures of the concept. Now Göttingen University will develop the successfully established measures further to continously advance the University’s positive developments in research and teaching." (Source)

Map

Although very light weight, hydrogen atoms have a high probability to be absorbed by a metal surface upon collision. In this video, OLIVER BÜNERMANN explains collision experiments carried out to determine why this is the case. During the experiment, they shot a hydrogen atom beam at a gold surface and at an insulator, measured the speed and direction of the atoms bouncing back from each surface and compared the results. The hydrogen atoms scattered from the gold surface suffered a greater energy loss than the one scattered from the insulator. This difference indicates that translational energy carried in the hydrogen atom is transferred into electronic excitations in the metal leading to the high probability of absorption. The experiment results match the predictions of the theoretical model explained by Alexander Kandratsenka.

LT Video Publication DOI: https://doi.org/10.21036/LTPUB10225

Electron-Hole Pair Excitation Determines the Mechanism of Hydrogen Atom Adsorption

  • Oliver Bünermann, Hongyan Jiang, Yvonne Dorenkamp, Alexander Kandratsenka, Svenja M. Janke, Daniel J. Auerbach and Alec M. Wodtke
  • Science
  • Published in 2015

Chicago

Oliver Bünermann, Hongyan Jiang, Yvonne Dorenkamp, Alexander Kandratsenka, Svenja M. Janke, Daniel J. Auerbach and Alec M. Wodtke. "Electron-Hole Pair Excitation Determines the Mechanism of Hydrogen Atom Adsorption." Science 350 (2015): 1346-1349.