Gebbie, M. A.; Valtiner, M.; Banquy, X.; Henderson, W. A.; Israelachvili, J. N.: Reply to Perkin et al.: Experimental observations demonstrate that ionic liquids form both bound (Stern) and diffuse electric double layers. Proceedings of the National Academy of Sciences of the United States of America 110 (44), pp. E4122 - E4122 (2013)
Valtiner, M.; Banquy, X.; Kristiansen, K.; Greene, G. W.; Israelachvili, J. N.: The Electrochemical Surface Forces Apparatus: The Effect of Surface Roughness, Electrostatic Surface Potentials, and Anodic Oxide Growth on Interaction Forces, and Friction between Dissimilar Surfaces in Aqueous Solutions. Langmuir 28 (36), pp. 13080 - 13093 (2012)
Valtiner, M.; Donaldson, S. H.; Gebbie, M. A.; Israelachvili, J. N.: Hydrophobic forces, electrostatic steering and acid-base bridging between atomically smooth self-assembled monolayers and end-functionalized PEGolated lipid bilayers. Journal of the American Chemical Society 134 (3), pp. 1746 - 1753 (2012)
Valtiner, M.; Ankah, G. N.; Bashir, A.; Renner, F. U.: Atomic force microscope imaging and force measurements at electrified and actively corroding interfaces: Challenges and novel cell design. Review of Scientific Instruments 82 (2), pp. 023703-1 - 023703-8 (2011)
Valtiner, M.; Kristiansen, K.; Greene, G. W.; Israelachvili, J. N.: Effect of surface roughness and electrostatic surface potentials on forces between dissimilar surfaces in aqueous solution. Advanced Materials 23 (20), pp. 2294 - 2299 (2011)
Thissen, P.; Valtiner, M.; Grundmeier, G.: Stability of Phosphonic Acid Self-Assembled Monolayers on Amorphous and Single-Crystalline Aluminum Oxide Surfaces in Aqueous Solution. Langmuir 26 (1), pp. 156 - 164 (2010)
Valtiner, M.; Torrelles, X.; Pareek, A.; Borodin, S.; Gies, H.; Grundmeier, G.: In situ Study of the Polar ZnO(0001)–Zn Surface in Alkaline Electrolytes. Journal of Physical Chemistry C 114 (36), pp. 15440 - 15447 (2010)
Valtiner, M.; Borodin, S.; Grundmeier, G.: Stabilisation and acidic dissolution mechanism of single crystalline ZnO(0001) surfaces in electrolytes studied by in-situ AFM imaging and ex-situ LEED. Langmuir 24 (10), pp. 5350 - 5358 (2008)
Valtiner, M.; Borodin, S.; Grundmeier, G.: Preparation and characterisation of hydroxide stabilised ZnO(0001)-Zn-OH surfaces. Physical Chemistry Chemical Physics 9 (19), pp. 2406 - 2412 (2007)
Valtiner, M.; Paulsen, H.; Weinberger, P.; Linert, W.: Theoretical investigations of a series of [hexakis(1-(tetrazol-1-yl)alkane-N4)iron(II)]bis(tetrafluoroborate) spin crossover complexes: Methyl-to-pentyl substituted species in the approximation of free cations. Match-Communications in Mathematical and in Computer Chemistry 57 (3), pp. 749 - 751 (2007)
Hydrogen in aluminium can cause embrittlement and critical failure. However, the behaviour of hydrogen in aluminium was not yet understood. Scientists at the Max-Planck-Institut für Eisenforschung were able to locate hydrogen inside aluminium’s microstructure and designed strategies to trap the hydrogen atoms inside the microstructure. This can…
Hydrogen induced embrittlement of metals is one of the long standing unresolved problems in Materials Science. A hierarchical multiscale approach is used to investigate the underlying atomistic mechanisms.
Hydrogen embrittlement affects high-strength ferrite/martensite dual-phase (DP) steels. The associated micromechanisms which lead to failure have not been fully clarified yet. Here we present a quantitative micromechanical analysis of the microstructural damage phenomena in a model DP steel in the presence of hydrogen.
We will investigate the electrothermomechanical response of individual metallic nanowires as a function of microstructural interfaces from the growth processes. This will be accomplished using in situ SEM 4-point probe-based electrical resistivity measurements and 2-point probe-based impedance measurements, as a function of mechanical strain and…
The project aims to study corrosion, a detrimental process with an enormous impact on global economy, by combining denstiy-functional theory calculations with thermodynamic concepts.
Understanding hydrogen-assisted embrittlement of advanced structural materials is essential for enabling future hydrogen-based energy industries. A crucially important phenomenon in this context is the delayed fracture in high-strength structural materials. Factors affecting the hydrogen embrittlement are the hydrogen content,...
This project will aim at developing MEMS based nanoforce sensors with capacitive sensing capabilities. The nanoforce sensors will be further incorporated with in situ SEM and TEM small scale testing systems, for allowing simultaneous visualization of the deformation process during mechanical tests
Nickel-based alloys are a particularly interesting class of materials due to their specific properties such as high-temperature strength, low-temperature ductility and toughness, oxidation resistance, hot-corrosion resistance, and weldability, becoming potential candidates for high-performance components that require corrosion resistance and good…