We are an Interdisciplinary Research Group, working at the Institute of Scientific Computing and the Dresden Center of Computational Materials Science of TU-Dresden. We develop mesoscale models to study material properties comprehensively, predict/explain experimental behaviors, and investigate the complexities of crystalline materials. This research is carried out with the aid of numerical simulations and state-of-the-art computational techniques.
The research activities illustrated here started a few years ago carried out by the PI and co-workers. They merged into the 3MS group in early 2021 with funding from the DFG Emmy Noether Programme.
Jan. 13th, 2023
New preprint out on APFC for complex crystal structures
A new preprint on the coarse-grained modeling (APFC) of crystal structures with tunable accuracy is now available on arXiv. It features modeling aspects and numerical examples, e.g., dislocations in kagome and diamond lattice.
Dec. 9th, 2022
New Project funded!
Our project "Ordering and defects on deformable surfaces" will start in 2023 together with other great projects within the "Vector- and Tensor-Valued Surface PDEs" Research Unit funded DFG. Open position announcement soon. See also project section!
Dec. 2nd, 2022
Seminar by Prof. M. Abbarchi at DCIM
Prof. M. Abbarchi presented his research on "Nano-imprint lithography of hard materials for photonic devices and biotechnology", sharing his experiences maturated across diverse academic research experiences and the grounding of a startup.
Oct. 30th, 2022
Preprint on controlling Magnetic properties in the APFC model
The manuscript reporting on a magnetic APFC model reproducing magnetic anisotropy an mangetostriction, while tuning their relative importance is now available in arXiv. It includes proof of concepts for real material applications, e.g. for Iron!
Oct. 9th, 2022
Preprint (proceeding) on improved numerics for PFC model
Preprint of a conference proceeding entitled "Improved time integration for phase-field crystal models of solidification" is available in arXiv. It reports on convenient time integration for efficient PFC simulations
Ordering and defects on deformable surfaces
DFG Project (FOR3013) - 2023-2026. Group Role: PI, Postdoc, PhD Students
This project focuses on the development of a mesoscale framework to study positional ordering and defects on deformable surfaces by using different modeling approaches and develop their extension to non-flat domains. The amplitude expansion of the phase-field crystal model is considered to handle elasticity and plasticity at the mesoscale without resolving atoms but retaining details of the crystal structure. Orientational ordering and deformable interacting objects, e.g. cells in epithelial tissues, will be modeled by a multi-phase-field approach governed by Allen-Cahn type equations and coupling with director and Q-tensor fields. Formulations suitable for non-flat domains will be developed via a general graph formulation.
A Mesoscale framework for the modeling of defects and interfaces in crystals
DFG Project (Emmy Noether Programme) - 2021-2026. Group Role: PI, Postdoc, PhD Students
This project addresses the mesoscale modeling of crystalline systems. It builds on the phase-field crystal (PFC) model and its amplitude expansion (APFC), which provide convenient coarse-grained descriptions of crystalline structures. It aims at i) delivering novel theoretical tools that bridge micro- and macroscopic features while studying crystals accounting for real material properties, ii) overcoming limitations of current state-of-the-art theoretical approaches in this field through new and hybrid approaches, iii) enabling applications to technology-relevant crystalline systems and related open problems in materials science.
NAtuRal instability of semiConductors thIn SOlid films for sensing and photonic applications - NARCISO
EU FET-Open Project - 2019-2022. Group Role: Research partner as IWR
NARCISO "NAtuRal instability of semiConductors thIn SOlid films for sensing and photonic applications"is an interdisciplinary project merging physics, chemistry, material science, fluid dynamics, and photonics with a high potential for applications and industrial scale-up of the relevant results. We propose to exploit the natural instability of thin solid films (solid state dewetting of silicon and germanium, SSD) to form complex patterns and nano-architectures (e.g. monocrystalline atomically-smooth structures, disordered hyperuniform metamaterials) that cannot be implemented with conventional methods.
Micro-crystals Single Photon InfraREd detectors – µSPIRE
EU FET-Open Project - 2017-2021. Group Role: Research partner as IWR
µSPIRE aims at establishing a technological platform for homo- and hetero- structure based photonic and electronic devices using the self-assembling of epitaxial crystals on patterned Si substrates. Emerging micro-electronic and photonic devices strongly require the integration on Si of a variety of semiconducting materials such as Ge, GaAs, in order to add novel functionalities to the Si platform. µSPIRE pursues this goal employing a novel deposition approach, which we termed vertical hetero-epitaxy (VHE), optimizied with the aid of simulations. VHE exploits the patterning of conventional Si substrates, in combination with epitaxial deposition, to attain the self-assembly of arrays of Ge and GaAs epitaxial micro-crystals elongated in the vertical direction, featuring structural and electronic properties unparalleled by “conventional” epitaxial growth.
Axel Voigt, Markus Kästner - TU-Dresden, DE ■ Ken R. Elder - Oakland Univeristy, USA ■ David J. Srolovitz - The University of Hong Kong ■ Jian Han - City University of Hong Kong ■ Marco Abbarchi, Isabelle Berbezier - IM2NP, Aix-Marseille Universite', France ■ Steven M. Wise - The University of Tennessee, USA ■ Francesco Montalenti, Roberto Bergamaschini - University of Milano-Bicocca, Italy ■ Giovanni Isella, Monica Bollani - LNESS, Politecnico di Milano, Italy ■ Luiza Angheluta - University of Oslo, Norway ■ Jorge Vinals - University of Minnesota, USA ■ Zhi-Feng Huang - Wayne State University, USA ■
Topical review on the Amplitude Expansion of the PFC Model - MSMSE 2022 ⇨
3D PFC theory of of dislocation kinematics and dynamics - JMPS 2022 ⇨
Diffuse interface approach for disconnection interface migration - Acta Materialia 2022 ⇨
Continuum modelling of disconnection-mediated interface migration - Acta Materialia 2022 ⇨
Mesoscale defect motion in binary systems - PRL 2021 ⇨
Hyperuniform monocrystalline structures by spinodal solid-state dewetting - PRL 2020 ⇨
A coarse-grained phase-field crystal model of plastic motion - JMPS 2020 ⇨
Ultra-long Silicon nano-wires by templated dewetting - Nature Communication 2019 ⇨
Bridging lattice deformations across scales - npj Computational Materials 2019 ⇨
Rayleigh-like instability in Ge/Si nano-strips - APL 2018 ⇨
Coarse-grained modelling of dislocations at small-angle GBs - PRMaterials 2018 ⇨
Self assembly of Si nanostructure by templated dewetting - Science Advances 2017 ⇨
Dr. Marco Salvalaglio,
Visitor Address, IWR
Barmerbau, B 237,
Zellescher Weg 25, 01217 Dresden, Germany
Visitor Address, DCMS
01069 Dresden, Germany
Technische Universität Dresden
Institut für Wissenschaftliches Rechnen
Tel.: +49 351 463-35657
Fax: +49 351 463-37096