Counts, W. A.; Friak, M.; Battaile, C. C.; Raabe, D.; Neugebauer, J.: A comparison of polycrystalline elastic constants computed by analytic homogenization schemes and FEM. Physica Status Solidi B 245, pp. 2630 - 2635 (2008)
Raabe, D.; Sander, B.; Friák, M.; Ma, D.; Neugebauer, J.: Theory-guided bottom-up design of β-titanium alloys as biomaterials based on first principles calculations: Theory and experiments. Acta Materialia 55 (13), pp. 4475 - 4487 (2007)
Grabowski, B.; Hickel, T.; Neugebauer, J.: Ab initio study of the thermodynamic properties of nonmagnetic elementary fcc metals: Exchange-correlation-related error bars and chemical trends. Physical Review B 76 (2), 024309 (2007)
Rosa, A. L.; Neugebauer, J.: First-principles calculations of the structural and electronic properties of clean GaN (0001) surfaces. Physical Review B 73 (20), pp. 205346-1 - 205346-13 (2006)
Rinke, P.; Qteish, A.; Winkelnkemper, M.; Bimberg, D.; Neugebauer, J.; Scheffler, M.: Band gap and band parameters of InN and GaN from quasiparticle energy calculations based on exact-exchange density-functional theory. Applied Physics Letters 89 (16), 161919 (2006)
Rosa, A. L.; Neugebauer, J.: Understanding Si adsorption on GaN (0001) surfaces using first-principles calculations. Physical Review B 73, 20, p. 205314 (2006)
Wahn, M.; Neugebauer, J.: Generalized Wannier functions: An efficient way to construct ab-initio tight-binding parameters for group-III nitrides. Physica Status Solidi B: Basic Research 243, 7, pp. 1583 - 1587 (2006)
Rinke, P.; Qteish, A.; Neugebauer, J.; Freysoldt, C.; Scheffler, M.: Combining GW calculations with exact-exchange density-functional theory: An analysis of valence-band photoemission for compound seminconductors. New Journal of Physics 7, pp. 126 - 160 (2005)
Ireta, J.; Neugebauer, J.; Scheffler, M.; Rojo, A.; Galvan, M.: Structural transitions in the polyalanine a-Helix under uniaxial strain. Journal of the American Chemical Society 127, 49, pp. 17241 - 17244 (2005)
Northrup, J. E.; Neugebauer, J.: Metal-adlayer-stabilized ZnO(0001) sufaces: Towards a new growth mode for oxides. Applied Physics Letters 87, 141914 (2005)
Qteish, A.; Al-Sharif, A. I.; Fuchs, M.; Scheffler, M.; Boeck, S.; Neugebauer, J.: Role of semicore states in the electronic structure of group-III nitrides: An exact-exchange study. Physical Review B 72, 155317 (2005)
Qteish, A.; Al-Sharif, A. I.; Fuchs, M.; Scheffler, M.; Boeck, S.; Neugebauer, J.: Exact-exchange calculations of the electronic structure of AlN, GaN and InN. Computer Physics Communications 169, p. 28 (2005)
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.
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
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,...
Thermo-chemo-mechanical interactions due to thermally activated and/or mechanically induced processes govern the constitutive behaviour of metallic alloys during production and in service. Understanding these mechanisms and their influence on the material behaviour is of very high relevance for designing new alloys and corresponding…
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…