Oh, D. M.; Wippermann, S. M.; Schmidt, W. G.; Yeom, H. W.: Oxygen adsorbates on the Si(111)4x1-In metallic atomic wire: Scanning tunneling microscopy and density-functional theory calculations. Physical Review B 90 (15), 155432 (2014)
Wippermann, S. M.; Schmidt, W. G.: Entropy Explains Metal-Insulator Transition of the Si(111)-In Nanowire Array. Physical Review Letters 105 (12), 126102 (2010)
Wippermann, S. M.; Schmidt, W. G.: Water adsorption on clean Ni(111) and p(2x2)-Ni(111)-O surfaces calculated from first principles. Physical Review B 78 (23), 235439 (2008)
Wippermann, S. M.; Koch, N.; Schmidt, W. G.: Adatom-induced conductance modification of in nanowires: Potential-well scattering and structural effects. Physical Review Letters 100 (10), 106802 (2008)
In this project, we aim to enhance the mechanical properties of an equiatomic CoCrNi medium-entropy alloy (MEA) by interstitial alloying. Carbon and nitrogen with varying contents have been added into the face-centred cubic structured CoCrNi MEA.
This project targets to exploit or develop new methodologies to not only visualize the 3D morphology but also measure chemical distribution of as-synthesized nanostructures using atom probe tomography.
About 90% of all mechanical service failures are caused by fatigue. Avoiding fatigue failure requires addressing the wide knowledge gap regarding the micromechanical processes governing damage under cyclic loading, which may be fundamentally different from that under static loading. This is particularly true for deformation-induced martensitic…