Projects of the Institute
Table of contents
current research projects
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, GaN and SiC, in order to add novel functionalities to the Si platform. µSpire pursues this goal read more
Polycrystalline composites, reinforced rubber and biological tissue are examples of random heterogeneous materials (RM). The properties of RM on very small length scales are described by statistical information, e.g., distribution of grains/inclusions, geometry, etc. Oftentimes RM feature a peculiar effective behaviour on large read more
Typically liquid crystals exhibit a rich bulk phase diagram with various mesophases involving both positional and orientational order. Their equilibrium phase behaviour has been extensively studied in flat space by statistical theories and computer simulation. Liquid crystals have also been confined in various ways on curved manifolds. While the topology of defects has been widely studied for nematic layers on curved surfaces, read more
The purpose of this study is to numerically investigate the behavior of active systems. These are systems composed by particles that are intrinsically in non-equilibrium since they are self-propelled (i.e. they have an internal motor of propulsion). At high densities such particles exhibit a wide range of collective phenomena, such as cluster formation or spontaneous organization in confined geometries.
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The epitaxial growth of graphene is influenced by the interaction of graphene with the substrate as well as by thermodynamic, kinetic and growth parameters. This leads to a rich phenomenology of growth patterns and defects. E.g. the island shapes can become dendritic, compact hexagons, butterflies and more. Recently, it has been shown that the shapes can be simulated by an anisotropic phase field model (PF). read more
The major goal of this project is the analysis of the development of trabecular bone morphologies in space and time and the influence of implants and drugs, which are released by the implants. A first approach is to better understand the celldynamics on implanted scaffolds. It is also wanted to get a better look into the influence of bone cell population dynamics and the mechanical stimuli and their influence on bone remodelling, read more
The aim of our research project is the application-oriented development of innovative algorithms and an HPC-software for the performance of multiscale machine simulations. The project is part of the OpenModelica program. The central idea of this project is to use mathematic as well as syntactic context information taken from sub models for the development of a total system. This could then be simulated with high parallel efficiency despite its multiscale phenomena. read more
Hamiltonian systems typically exhibit a mixed phase space, with regions characterized by regular and chaotic behavior, respectively. Such dynamically distinct regions may be separated completely by invariant curves or surfaces. Additionally, there exist partial barriers. These barriers are permeable but hard to cross for trajectories (see figure), and thus they significantly influence the transport properties of the underlying system. read more
In this project, we use diffuse-interface models to describe complex interfacial phenomena arising in micro process engineering, materials sciences and biology. Thereby, we derive efficient numerical algorithms using adaptive methods and high performance computing for the involved equations. To discretize in time, we propose new implicit and semi-implicit schemes which stabilize the coupling between interface evolution and flow propagation. read more
Multiphase flow systems are strongly influenced by transport processes along the lower dimensional fluidic interface. These processes include e.g. adsorption effects from the bulk phases and transport of species on the interface. Variable surface properties, such as surface tension, can strongly influence the bulk flow. However, there is one crucial aspect to be considered. The interface by its own can also have fluid like properties. read more
Cells are the smallest unit of life and are for itself of utmost complexity. Understanding the basic processes within a cell helps to understand life. A basic instrument of understanding those processes are mathematical models. In recent years, the simulation science supported by exponentially growing computer power made fundamental progress, giving rise to the development of more and more complex models. read more
Our research goals are related to improvements of the parallel adaptive finite element (FEM) library AMDiS and its use in various applications in problems in materials science and biophysics. The application part uses the phase field crystal (PFC) model, which can be viewed as a local approximation to classical dynamic density functional theory (DDFT). read more
The aim of the SFB/TR 96 is to establish a tool development process considering different correction and compensation methods and to evaluate their cost efficiency. This evaluation uses reduced models (A06) for each component and complete models, where components are coupled together. The coupled model will be used to validate the reduced models, which was successfully done in the first phase. read more
Multiphase flow systems are strongly influenced by transport processes along the lower dimensional fluidic interface. These processes include e.g. adsorption effects from the bulk phases and transport of species on the interface. Variable surface properties, such as surface tension, which can depend on these species, can strongly influence the bulk flow. read more
completed research projects
| Drittmittelgeber | Projekttitel | Laufzeit |
|---|---|---|
| DFG Exzellenzinitiative | 08/2013 - 07/2016 | |
| TU Dresden support-the-best | 04/2014- 05/2016 | |
| DFG SPP 1296 | A continuum model for heterogeneous nucleation - atomistic simulations on diffusive time scales | 08/2007- 04/2016 |
| EU FP7 IRSES | Phasefield | 12/2011- 11/2015 |
| DFG | Experimental and theoretical investigations to increase the process efficiency and quality of the cutting edge of inert gas welding with fiber laser together with E. Beyer |
06/2011- 05/2014 |
| DFG | Geometric evolution towards the understanding of biomembranes | 05/2007- 04/2014 |
| DFG SFB 609 C10 | Influencing the morphology and composition of electrochemically deposited layers by magnetic fields |
01/2008- 12/2012 |
| DFG SFB 609 A10 | Adjoint-based control of turbulent flows byelectromagnetic fields | 01/2009- 12/2012 |
| BMWi ZIM | Calculation methods for process analysis of thick matter handling systems |
10/2010- 10/2011 |
| DFG | From surface instabilities to nanostructures: numerical investigations | 01/2009- 06/2011 |
| SAB | Seed stipendium | 01/2010- 12/2010 |
| DFG SPP 1253 | Control of nanostructures through electric fields together with F. Haußer |
03/2007- 05/2010 |
| EU/NSF 6th FP NMP | Bridging atomistic to continuum scales - Multiscale investigation of self-assembling magnetic dots in epitaxial growth - MagDot together with T. Ala-Nissilä, O. Fruchart, M. Kotrla, J. Lowengrub, K. Thornton, P.W. Voorhees |
01/2006- 12/2009 |
| BMWi | SmartSoft | 12/2008- 11/2009 |
| DFG | Macro- and micro-fluid-mechanics (CFD) of the cochlea | 10/2008- 05/2009 |
| DFG SFB 611 | Epitaxy together with F. Otto |
01/2005- 12/2008 |
| BMBF | Continuum models for epitaxial growth of SiGe together with F. Otto |
05/2004- 04/2007 |
| DFN VIOLA |
TechSim - Distributed simulations of complex technological systems together with B. Steckel |
05/2004- 04/2007 |
| DFG SPP 1095 | Thermal decay of nanostructures and Ostwald ripening of homoepitaxial monolayers | 01/2005- 12/2006 |
| DFG SFB 611 | Point defects together with M. Griebel |
01/2002- 12/2004 |