Hamou, R. F.; Biedermann, P. U.; Erbe, A.; Rohwerder, M.: Screening effects in probing the double layer by scanning electrochemical potential microscopy. Comsol European Conference October 2009, Milan, Italy (2009)
Salgin, B.; Rohwerder, M.: A New Approach to Determine Ion Mobility Coefficients for Delamination Scenarios. electrochem09 and 50th Corrosion Science Symposium, Manchester, UK (2009)
Salgin, B.; Rohwerder, M.: A New Approach to Determine Ion Mobility Coefficients for Delamination Scenarios. 60th Annual Meeting of the International Meeting of the International Society of Electrochemistry, Beijing, China (2009)
Hamou, R. F.; Biedermann, P. U.; Erbe, A.; Rohwerder, M.: Simulation of probing the electric double layer by scanning electrochemical potential microscopy (SECPM). 11th International Fischer Symposium on Microscopy in Electrochemistry, Benediktbeuern, Germany (2009)
Rohwerder, M.: Kelvin Probe Microscopy in Materials Science: Introduction, Overview and Future Perspectives. 23rd International Conference on Surface Modification Technologies (SMT 23), Chennai, India (2009)
Rohwerder, M.: Intelligent corrosion protection by organic coatings based on conducting polymers. Corrosion Cluster Workshop and Protection of Metals with Coatings, NIMS, Tsukuba, Japan (2009)
Swaminathan, S.; Spiegel, M.; Rohwerder, M.: Investigations on external/internal oxidation of quarternary model alloy during annealing in N2/H2: Role of dew point and dwelling time. 7th International Conference on the Microscopy of Oxidation, Chester, UK (2008)
Fenster, J. C.; Rohwerder, M.; Hassel, A. W.: Impedance-Titration: A Novel Method for Understanding the Kinetics of Corrosion in Aqueous Solutions. 59th Annual Meeting of the International Society of Electrochemistry, Sevilla, Spanien (2008)
Khan, T. R.; de la Fuenta, D.; Rohwerder, M.: Electrolytic co-deposition of SiO2 nanoparticles with zinc for improvement of corrosion protection. 59th Annual Meeting of the International Society of Electrochemistry, Seville, Spain (2008)
Stratmann, M.; Hassel, A. W.; Rohwerder, M.: Microelectrochemical Investigations of Interfaces and Surfaces of Advanced Materialks. 7th International Symposium on Electrochemical Micro- and Nanosystems, Ein-Gedi, Israel (2008)
Salgin, B.; Rohwerder, M.: Effects of Semiconducting Properties of Surface Oxide on the Delamination at the Polymer/Zinc Interface. SurMat Seminar, Kleve, Germany (2008)
Swaminathan, S.; Spiegel, M.; Rohwerder, M.: Effect of annealing conditions on the selective oxidation of quarternary model alloy. 4th International Conference on Diffusion in Solids and Liquids, Barcelona, Spain (2008)
Borodin, S.; Rohwerder, M.: Growth of high quality crystalline aluminium oxide films on Nb(110)/sapphire(11-20). 14th International Conference on Solid Films and Surfaces (ICSFS), Dublin, Ireland (2008)
Borodin, S.; Rohwerder, M.: Preparation of model single crystalline aluminium oxide films suitable for scanning tunnelling microscopy. DPG Tagung 2008, 72. Jahrestagung der Deutsche Physikalische Gesellschaft, Berlin, Germany (2008)
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.
In this project we conduct together with Dr. Sandlöbes at RWTH Aachen and the department of Prof. Neugebauer ab initio calculations for designing new Mg – Li alloys. Ab initio calculations can accurately predict basic structural, mechanical, and functional properties using only the atomic composition as a basis.
The wide tunability of the fundamental electronic bandgap by size control is a key attribute of semiconductor nanocrystals, enabling applications spanning from biomedical imaging to optoelectronic devices. At finite temperature, exciton-phonon interactions are shown to exhibit a strong impact on this fundamental property.
Enabling a ‘hydrogen economy’ requires developing fuel cells satisfying economic constraints, reasonable operating costs and long-term stability. The fuel cell is an electrochemical device that converts chemical energy into electricity by recombining water from H2 and O2, allowing to generate environmentally-friendly power for e.g. cars or houses…
The project Hydrogen Embrittlement Protection Coating (HEPCO) addresses the critical aspects of hydrogen permeation and embrittlement by developing novel strategies for coating and characterizing hydrogen permeation barrier layers for valves and pumps used for hydrogen storage and transport applications.
In this project we study - together with the department of Prof. Neugebauer and Dr. Sandlöbes at RWTH Aachen - the underlying mechanisms that are responsible for the improved room-temperature ductility in Mg–Y alloys compared to pure Mg.
Efficient harvesting of sunlight and (photo-)electrochemical conversion into solar fuels is an emerging energy technology with enormous promise. Such emerging technologies depend critically on materials systems, in which the integration of dissimilar components and the internal interfaces that arise between them determine the functionality.
In this project, we work on a generic solution to design advanced high-entropy alloys (HEAs) with enhanced magnetic properties. By overturning the concept of stabilizing solid solutions in HEAs, we propose to render the massive solid solutions metastable and trigger spinodal decomposition. The motivation for starting from the HEA for this approach…