Biedermann, P. U.; Flechtner, K.-D.: Towards a Thermodynamic Theory of Electrochemical Reactions in Aqueous Media. A DFT Study of the Intermediates of Oxygen Reduction. 46th Symposium on Theoretical Chemistry, STC2010, Münster, Germany (2010)
Biedermann, P. U.; Flechtner, K.-D.: Theoretical Insights into the Mechanism of the Oxygen Reduction Reaction. Electrochemistry 2010, Ruhr-Universität Bochum, Bochum, Germany (2010)
Nayak, S.; Biedermann, P. U.; Erbe, A.: Spectroscopic Investigation of the Oxygen Reduction Reaction (ORR) on Semiconductor Surfaces. Electrochemistry 2010 - From microscopic understanding to global impact, Bochum, Germany (2010)
Nayak, S.; Biedermann, P. U.; Erbe, A.: Electrochemical oxygen reduction on semiconductor electrodes. 109th Annual meeting of the German Bunsen Society of Physical Chemistry (Bunsentagung), Bielefeld, Germany (2010)
Hamou, R. F.; Biedermann, P. U.; Rohwerder, M.; Blumenau, A. T.: FEM Simulation of the Scanning Electrochemical Potential Microscopy (SECPM). 2nd IMPRS-SurMat Workshop in Surface and Interface Engineering in Advanced Materials, Ruhr-Universität Bochum, Bochum, Germany (2008)
Torres, E.; Biedermann, P. U.; Blumenau, A. T.: A DFT study of Alkanethiol adsorption sites on Au(111) surfaces. 2nd IMPRS-SurMat Workshop in Surface and Interface Engineering in Advanced Materials, Ruhr-Universität Bochum, Bochum, Germany (2008)
Biedermann, P. U.; Torres, E.; Laaboudi, L.; Isik-Uppenkamp, S.; Rohwerder, M.; Blumenau, A. T.: Cathodic Delamination by a Combined Computational and Experimental Approach: The Aklylthiol/Gold Model System. Multiscale Material Modeling of Condensed Matter, MMM2007, St. Feliu de Guixols, Spain (2007)
International researcher team presents a novel microstructure design strategy for lean medium-manganese steels with optimized properties in the journal Science
Oxides find broad applications as catalysts or in electronic components, however are generally brittle materials where dislocations are difficult to activate in the covalent rigid lattice. Here, the link between plasticity and fracture is critical for wide-scale application of functional oxide materials.
Hydrogen embrittlement (HE) of steel is a great challenge in engineering applications. However, the HE mechanisms are not fully understood. Conventional studies of HE are mostly based on post mortem observations of the microstructure evolution and those results can be misleading due to intermediate H diffusion. Therefore, experiments with a…
The objective of the project is to investigate grain boundary precipitation in comparison to bulk precipitation in a model Al-Zn-Mg-Cu alloy during aging.
The thorough, mechanism-based, quantitative understanding of dislocation-grain boundary interactions is a central aim of the Nano- and Micromechanics group of the MPIE [1-8]. For this purpose, we isolate a single defined grain boundary in micron-sized sample. Subsequently, we measure and compare the uniaxial compression properties with respect to…
The goal of this project is the investigation of interplay between the atomic-scale chemistry and the strain rate in affecting the deformation response of Zr-based BMGs. Of special interest are the shear transformation zone nucleation in the elastic regime and the shear band propagation in the plastic regime of BMGs.
In this project we developed a phase-field model capable of describing multi-component and multi-sublattice ordered phases, by directly incorporating the compound energy CALPHAD formalism based on chemical potentials. We investigated the complex compositional pathway for the formation of the η-phase in Al-Zn-Mg-Cu alloys during commercial…