Krüger, T.; Varnik, F.; Raabe, D.: Second-order convergence of the deviatoric stress tensor in the standard Bhatnagar-Gross-Krook lattice Boltzmann method. Physical Review E 82 (025701) (2010)
Ayodele, S. G.; Varnik, F.; Raabe, D.: Effect of aspect ratio on transverse diffusive broadening: A lattice Boltzmann study. Physical Review E 80 (1), pp. 016304-1 - 016304-9 (2009)
Ayodele, S. G.; Varnik, F.; Raabe, D.: Transverse diffusive mixing of solutes in pressure driven microchannels: A Lattice Boltzmann study of the scaling laws. La Houille Blanche, International Water Journal 6, pp. 93 - 100 (2009)
Gross, M.; Varnik, F.; Raabe, D.: Fall and rise of small droplets on rough hydrophobic substrates. Europhysics Letters 88 (26002), pp. 26002-p1 - 26002-p6 (2009)
Varnik, F.; Raabe, D.: Scaling effects in microscale fluid flows at rough solid surfaces. Modeling and Simulation in Materials Science and Engineering 14, pp. 857 - 873 (2006)
Baschnagel, J.; Varnik, F.: Computer simulations of supercooled polymer melts in the bulk and in confined geometry. Journal of Physics: Condensed Matter 17 (32), pp. R851 - R953 (2005)
Varnik, F.; Bocquet, L.; Barrat, L.-J.: A study of the static yield stress in a binary Lennard-Jones glass. The Journal of Chemical Physics 120 (6), pp. 2788 - 2801 (2004)
Baschnagel, J.; Meyer, H.; Varnik, F.; Metzger, S.; Aichele, M.; Müller, M.; Binder, K.: Computer Simulations of Polymers close to Solid Interfaces: Some Selected Topics. Special Issue of Interface Science: Polymers at Interfaces 11, pp. 159 - 173 (2003)
Varnik, F.; Baschnagel, J.; Binder, K.; Mareschal, M.: Confinement effects on the slow dynamics of a supercooled polymer melt: Rouse modes and the incoherent scattering function. European Physical Journal E 12 (167) (2003)
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…
This project will aim at addressing the specific knowledge gap of experimental data on the mechanical behavior of microscale samples at ultra-short-time scales by the development of testing platforms capable of conducting quantitative micromechanical testing under extreme strain rates upto 10000/s and beyond.
The aim of the current study is to investigate electrochemical corrosion mechanisms by examining the metal-liquid nanointerfaces. To achieve this, corrosive fluids will be strategically trapped within metal structures using novel additive micro fabrication techniques. Subsequently, the nanointerfaces will be analyzed using cryo-atom probe…
With the support of DFG, in this project the interaction of H with mechanical, chemical and electrochemical properties in ferritic Fe-based alloys is investigated by the means of in-situ nanoindentation, which can characterize the mechanical behavior of independent features within a material upon the simultaneous charge of H.
The goal of this project is the investigation of interplay between the atomic-scale chemistry and the strain rate in affecting the deformation response of Zr-based BMGs. Of special interest are the shear transformation zone nucleation in the elastic regime and the shear band propagation in the plastic regime of BMGs.
“Smaller is stronger” is well known in micromechanics, but the properties far from the quasi-static regime and the nominal temperatures remain unexplored. This research will bridge this gap on how materials behave under the extreme conditions of strain rate and temperature, to enhance fundamental understanding of their deformation mechanisms. The…
Hydrogen embrittlement (HE) of steel is a great challenge in engineering applications. However, the HE mechanisms are not fully understood. Conventional studies of HE are mostly based on post mortem observations of the microstructure evolution and those results can be misleading due to intermediate H diffusion. Therefore, experiments with a…