Hassel, A. W.; Seo, M.: Localised Photoelectrochemical Measurement with the Scanning Droplet Cell. Passivity and Localized Corrosion: International Symposium in Honor of Professor Norio Sato. Electrochem. Soc. Proc. PV 99-27, pp. 337 - 342 (1999)
Hassel, A. W.; Seo, M.: The Scanning Droplet Cell: Experimental Results and Determination of the Potential Distribution. Proceed. Japan Soc. Corr. Engineer. Mater. Environments 1998, pp. 293 - 296 (1998)
Hassel, A. W.: Elektronische und ionische Transportprozesse in ultradünnen Aluminiumoxidschichten. Oberflächentechnik '95, DGO Jahrestagung 33, pp. 31 - 34 (1995)
Venzlaff, H.; Enning, D.; Widdel, F.; Stratmann, M.; Hassel, A. W.: A new model for microbiologically influenced corrosion. The European Corrosion Congress Eurocorr 2010, Moscow, Russia (2010)
Mardare, A. I.; Ludwig, A.; Savan, A.; Wieck, A. D.; Hassel, A. W.: High throughput growth and in situ characterization of anodic oxides on Ti, Ta and Hf combinatorial alloys. “Electrochemistry: Crossing Boundaries”, GDCh, Gießen, Germany (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)
Hassel, A. W.: Progress in the Electrochemical Processing of Directionally Solidified Eutectics. 7th International Symposium on Electrochemical Micro- and Nanosystems, Ein-Gedi, Israel (2008)
Hassel, A. W.; Milenkovic, S.; Smith, A. J.: Nanowires and Nanowire Arrays by an Electrochemical Structuring of Directionally Solidified Eutectics. 59th Annual Meeting of the International Society of Electrochemistry, Sevilla, Spain (2008)
Mardare, A. I.; Wieck, A. D.; Hassel, A. W.: Combinatorial microelectrochemistry using an automated scanning droplet cell. 59th Annual Meeting of the International Society of Electrochemistry, Sevilla, Spanien (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)
Venzlaff, H.; Widdel, F.; Stratmann, M.; Hassel, A. W.: Microbial corrosion induced by a new highly aggressive SRB strain. 59th Annual Meeting of the International Society of Electrochemistry, Sevilla, Spain (2008)
Hassel, A. W.: Tailoring of Nanostructured Alloys by Anodisation. International Smposium on Anodizing Science and Technology 2008, Rusutsu, Japan (2008)
Mardare, A. I.; Wieck, A. D.; Hassel, A. W.: High throughput synthesis and characterization of anodic oxides on valve metal combinatorial libraries. 2nd International IMPRS-SurMat Workshop on Surface and Interface Engineering in Advanced Materials, Bochum, Germany (2008)
Chen, Y.; Milenkovic, S.; Hassel, A. W.: Fabrication of Iso-oriented Gold Nanobelt Arrays from an Fe–Au Eutectoid. 9th International Conference on Nanostructured Materials, Rio de Janerio, Brazil (2008)
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.
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.
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.
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.
We have studied a nanocrystalline AlCrCuFeNiZn high-entropy alloy synthesized by ball milling followed by hot compaction at 600°C for 15 min at 650 MPa. X-ray diffraction reveals that the mechanically alloyed powder consists of a solid-solution body-centered cubic (bcc) matrix containing 12 vol.% face-centered cubic (fcc) phase. After hot compaction, it consists of 60 vol.% bcc and 40 vol.% fcc. Composition analysis by atom probe tomography shows that the material is not a homogeneous fcc–bcc solid solution