Grundmeier, G.; Fink, N.; Giza, M.; Popova, V.; Vlasak, R.; Wapner, K.: Application of combined spectroscopic, electrochemical and microscopic techniques for the understanding of adhesion and de-adhesion at polymer/metal interfaces. 24. Spektrometertagung, Dortmund, Germany (2005)
Grundmeier, G.; Wapner, K.: Anwendung einer neuen höhenregulierbaren Rasterkelvinsonde zur Untersuchung der Stabilität von Klebstoff-Metall-Grenzflächen in feuchten und korrosiven Atmosphären. Swissbonding, Rapperswil am Zürichsee, Switzerland (2005)
Grundmeier, G.; Wapner, K.; Schönberger, B.; Stratmann, M.: Fundamentals and Applications of a new height regulated Scanning Kelvin Probe in Corrosion and Adhesion Science. ISE 2004, Thessaloniki, Greece (2004)
Grundmeier, G.; Wapner, K.; Schönberger, B.; Stratmann, M.: Introduction of a height regulated Scanning Kelvin Probe for the simultaneous measurement of surface topography and interfacial electrode potentials in corrosive environments. ISE Conference, 55th Annual Meeting, Thessaloniki, Greece (2004)
Grundmeier, G.; Wapner, K.: Water diffusion measurements in a model adhesive/silicon lap joint using FTIR-spectroscopy: Differentiation between bulk and interfacial diffusion. Euradh 2004, Freiburg, Germany (2004)
Wapner, K.; Grundmeier, G.: Extended Abstract: Water diffusion measurements in a model adhesive/silicon lap joint using FTIR-spectroscopy: differentiation between bulk and interfacial diffusion. Euradh2004/Adhesion2004, Freiburg, Germany (2004)
Wapner, K.; Stratmann, M.; Grundmeier, G.: Extended Abstract: Non-destructive, in-situ measurement of de-adhesion processes at buried adhesive/metal interfaces by means of a new scanning Kelvin probe blister Test. Euradh2004/Adhesion2004, Freiburg, Germany (2004)
Grundmeier, G.; Wapner, K.; Stratmann, M.: Applications of a new height regulated Scanning Kelvin Probe for the study of polymer/metal interfaces in corrosive environments. ICEPAM 2004, Helsinki, Finnland (2004)
Grundmeier, G.; Wapner, K.; Schönberger, B.; Stratmann, M.: Non-destructive, real time in-situ measurement of de-adhesion processes at buried adhesive/metal interfaces by means of a new Scanning Kelvin Probe Blister Test. Annual Meeting of the American Adhesion Society, Wilmington, UK (2004)
Wapner, K.; Grundmeier, G.: Application of the Scanning Kelvin Probe for the study of de-adhesion processes at thin film engineered adhesive/metal interfaces. Annual Meeting of the American Adhesion Society, Wilmington, UK (2004)
Posner, R.; Wapner, K.; Stratmann, M.; Grundmeier, G.: Hydrated Ion Transport at Polymer/Oxide/Metal-Interfaces in Non-Corrosive Atmosphere: Influence of Electric Field Gradients. Gordon Conference Graduate Research Seminar on Aqueous Corrosion, Colby Sawyer College, New London, NH, USA (2008)
Klimow, G.; Wapner, K.; Grundmeier, G.: Applications of a Scanning Kelvin Probe for Studying Modified Adhesive/Metal Interfaces under Corrosive and Mechanical Load. 3rd World Congress on Adhesion and Related Phenomena, WCARP-III, Beijing, China (2006)
Wapner, K.; Stratmann, M.; Grundmeier, G.: Non-destructive, In-Situ Measurement of De-Adhesion Processes at Buried Adhesive/Metal Interfaces by Means of a New Scanning Kelvin Probe Blister Test. EUROMAT 2005, Prague, Czech Republic (2005)
Wapner, K.; Stratmann, M.; Grundmeier, G.: The application of the scanning Kelvin probe for investigating the deadhesion of adhesives on iron and zinc. EURADH 2002, Glasgow, UK (2002)
Wapner, K.: Grenzflächenchemische und elektrochemische Untersuchungen zur Haftung und Enthaftung an modifizierten Klebstoff/Metall-Grenzflächen. Dissertation, Ruhr-Universität Bochum, Fakultät für Chemie, Bochum, Germany (2006)
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 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.
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.
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…