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
The aim of this project is to develop novel nanostructured Fe-Co-Ti-X (X = Si, Ge, Sn) compositionally complex alloys (CCAs) with adjustable magnetic properties by tailoring microstructure and phase constituents through compositional and process tuning. The key aspect of this work is to build a fundamental understanding of the correlation between…
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.
Hydrogen is a clean energy source as its combustion yields only water and heat. However, as hydrogen prefers to accumulate in the concentrated stress region of metallic materials, a few ppm Hydrogen can already cause the unexpected sudden brittle failure, the so-called “hydrogen embrittlement”. The difficulties in directly tracking hydrogen limits…
This project with the acronym GB-CORRELATE is supported by an Advanced Grant for Gerhard Dehm by the European Research Council (ERC) and started in August 2018. The project GB-CORRELATE explores the presence and consequences of grain boundary phase transitions (often termed “complexions” in literature) in pure and alloyed Cu and Al. If grain size…