Schmidt, W. G.; Wippermann, S. M.; Rauls, E.; Gerstmann, U.; Sanna, S.; Thierfelder, C.; Landmann, M.; dos Santos, L. S.: Si(111)-In Nanowire Optical Response from Large-scale Ab Initio Calculations. In: High Performance Computing in Science and Engineering 2010, pp. 149 - 158. 14th Annual Results and Review Workshop on High Performance Computing in Science and Engineering, Stuttgart University, Stuttgart, Germany, October 04, 2010 - October 05, 2010. Springer-Verlag Berlin, Berlin, Germany (2011)
Schmidt, W. G.; Blankenburg, S.; Rauls, E.; Wippermann, S. M.; Gerstmann, U.; Sanna, S.; Thierfelder, C.; Koch, N.; Landmann, M.: Understanding Long-range Indirect Interactions Between Surface Adsorbed Molecules. In: High Performance Computing in Science and Engineering 2009, pp. 75 - 84. 12th Results and Review Workshop on High Performance Computing in
Science and Engineering, Stuttgart University , Stuttgart, Germany, October 08, 2009 - October 09, 2009. (2010)
Wippermann, S. M.; Schmidt, W. G.; Thissen, P.; Grundmeier, G.: Dissociative and molecular adsorption of water on alpha-Al2O3(0001). In: Physica Status Solidi C, Vol. 7, pp. 137 - 140. 12th International Conference on Formation of Semiconductor Interfaces, Weimar, Germany, July 05, 2009 - July 10, 2009. Wiley-VCH, Weinheim (2010)
Schmidt, W. G.; Blankenburg, S.; Wippermann, S. M.; Hermann, A. M.; Hahn, P.; Preuss, M.; Seino, K.; Bechstedt, F.: Anomalous water optical absorption: Large-scale first-principles simulations. In: High Performance Computing in Science and Engineering '06, pp. 49 - 58. 9th Results and Review Workshop on High Performance Computing in Science and Engineering, Stuttgart University, Stuttgart, Germany, October 19, 2006 - October 20, 2006. (2007)
Wippermann, S. M.; Schmidt, W. G.; Oh, D. M.; Yeom, H. W.: Impurity-mediated early condensation of an atomic layer electronic crystal: oxygen-adsorbed In/Si(111)-(4×1)/(8×2). DPG Spring Meeting 2015, Berlin, Germany (2015)
Wippermann, S. M.; Schmidt, W. G.: In/Si(111)-(4×1)/(8×2): a fascinating model system for one-dimensional conductors. DPG March Meeting 2014, Berlin, Germany (2014)
Wippermann, S. M.; Schmidt, W. G.: In/Si(111)-(4x1)/(8x2): A fascinating model system for one-dimensional conductors. DPG Spring Meeting, Dresden, Germany (2014)
Wippermann, S. M.; Oh, D. M.; Yeom, H. W.; Schmidt, W. G.: Oxygen adsorption on the In/Si(111) nanowire array: structure and influence on metal insulator transition. DPG Spring Meeting, Dresden, Germany (2014)
Magnetic properties of magnetocaloric materials is of utmost importance for their functional applications. In this project, we study the magnetic properties of different materials with the final goal to discover new magnetocaloric materials more suited for practical applications.
Laser Powder Bed Fusion (LPBF) is the most commonly used Additive Manufacturing processes. One of its biggest advantages it offers is to exploit its inherent specific process characteristics, namely the decoupling the solidification rate from the parts´volume, for novel materials with superior physical and mechanical properties. One prominet…
The aim of the Additive micromanufacturing (AMMicro) project is to fabricate advanced multimaterial/multiphase MEMS devices with superior impact-resistance and self-damage sensing mechanisms.
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
Local lattice distortion is one of the core effects in complex concentrated alloys (CCAs). It has been expected that the strength CCAs can be improved by inducing larger local lattice distortions. In collaboration with experimentalists, we demonstrated that VCoNi has larger local lattice distortions and indeed has much better strength than the…
This project is a joint project of the De Magnete group and the Atom Probe Tomography group, and was initiated by MPIE’s participation in the CRC TR 270 HOMMAGE. We also benefit from additional collaborations with the “Machine-learning based data extraction from APT” project and the Defect Chemistry and Spectroscopy group.
Statistical significance in materials science is a challenge that has been trying to overcome by miniaturization as in micropillar compression. However, this process is still limited to 4-5 tests per parameter variance, i.e. Size, orientation, grain size, composition, etc. as the process of fabricating pillars and testing has to be done one by one.…
In this project we pursue recent developments in the field of austenitic steels with up to 18% reduced mass density. The alloys are based on the Fe-Mn-Al-C system.