Lymperakis, L.; Neugebauer, J.: Thermodynamics and adatom kinetics of non-polar GaN surfaces. Spring meeting of the German Physical Society (DPG), Berlin, Germany (2008)
Petrov, M.; Lymperakis, L.; Neugebauer, J.; Stefaniuk, R.; Dluzewski, P.: Nonlinear Elastic Effects in Group III-Nitrides: From ab-initio to Finite Element Calculation. 17th International Conference on Computer Methods in Mechanics CMM-2007, Spala, Poland (2007)
Petrov, M.; Lymperakis, L.; Neugebauer, J.; Stefaniuk, R.; Dluzewski, P.: Nonlinear Elastic Effects in Group III-Nitrides: From ab-initio to Finite Element Calculation. 17th International Conference on Computer Methods in Mechanics CMM-2007, Spala, Poland (2007)
Lymperakis, L.; Neugebauer, J.: Ab-initio based multiscale analysis of the 5D configurational space of Grain Boundaries in Aluminum. Spring meeting of the German Physical Society (DPG), Regensburg, Germany (2007)
Petrov, M.; Lymperakis, L.; Neugebauer, J.: Nonlinear Elastic Effects in Group III-Nitrides. Spring meeting of the German Physical Society (DPG), Regensburg, Germany (2007)
Marquardt, O.; Wahn, M.; Lymperakis, L.; Hickel, T.; Neugebauer, J.: Implementation and application of a multi-scale approach to electronic properties of group III-nitride based semiconductor nanostructures. Workshop on Nitride Based Nanostructures, Berlin, Germany (2007)
Lymperakis, L.: Ab-initio based multiscale caclulations of Grain Boundaries in aluminum. 1. Harzer Ab initio Workshop, Clausthal-Zellerfeld, Germany (2006)
Lymperakis, L.; Neugebauer, J.: Kinetically stabilized ordering in AlGaN alloys. Institute of Fundamental Technological Research, Polish Academy of Sciences, Colloquium, Warsaw/Poland (2006)
Lymperakis, L.; Neugebauer, J.: Ab-initio based multiscale calculations of low-angle grain boundaries in Aluminum. DPG spring meeting, Dresden, Germany (2006)
Lymperakis, L.: Ab-initio based multiscale calculations of extended defects in condensed matter. Ab initio Description of Iron and Steel (ADIS2006), Ringberg Castle (2006)
Lymperakis, L.; Neugebauer, J.: Electronic properties of non-stoichiometric dislocation cores in GaN. Materials Research Society fall meeting, Boston, MA, USA (2005)
Lymperakis, L.; Neugebauer, J.: The role of strain fields, core structure, and native defects on the electrical activity of dislocations in GaN. The 6th International Conference on Nitride Semiconductors, Bremen (2005)
Lymperakis, L.; Neugebauer, J.: Formation of steps and vicinal surfaces on GaN (0001) surfaces: Implications on surface morphologies and surface roughening. DPG spring meeting, Berlin, Germany (2005)
Duff, A.; Lymperakis, L.; Neugebauer, J.: Limits of Indium Incorporation on In1-xGaxN {0001} III- and N-Polar Surfaces: An Ab Initio Approach. 10th International Conference on Nitride Semiconductors, Washigton DC, USA (2013)
International researcher team presents a novel microstructure design strategy for lean medium-manganese steels with optimized properties in the journal Science
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…
Conventional alloy development methodologies which specify a single base element and several alloying elements have been unable to introduce new alloys at an acceptable rate for the increasingly specialised application requirements of modern technologies. An alternative alloy development strategy searches the previously unexplored central regions…
The full potential of energy materials can only be exploited if the interplay between mechanics and chemistry at the interfaces is well known. This leads to more sustainable and efficient energy solutions.
This project aims to correlate the localised electrical properties of ceramic materials and the defects present within their microstructure. A systematic approach has been developed to create crack-free deformation in oxides through nanoindentation, while the localised defects are probed in-situ SEM to study the electronic properties. A coupling…