Dr. Dirk Peschka

Projects as a project leader

• SE-AP15

  Structure Formation in Thin Liquid-Liquid Films

  Dr. Dirk Peschka / Prof. Dr. Barbara Wagner

  Project heads: Dr. Dirk Peschka / Prof. Dr. Barbara Wagner
  Project members: -
  Duration: 01.04.2011 - 30.09.2017
  Status: completed
  Located at: Weierstraß-Institut
  

  Description

  The main topic of this tandem proposal is the direct comparison of results from mathematical modeling, analysis and experimental investigations of rupture,dewetting dynamics and equilibrium patterns of a thin liquid-liquid system. The experimental system uses a PS (polystyrene)/ PMMA (polymethylmethacrylate) thin bilayer of a few hundred nanometer, whose liquid properties can be tuned from Newtonian to visoelastic rheological flow behavior by varying the length of the polymer chains. On these small scales, apart from capillary forces and viscous dissipation, intermolecular forces will play an important role in the dynamics and morphology of the interfaces. The mathematical analysis and numerical simulation of adequate thin film models that will be derived from the underlying fluid mechanical equations, will be used through direct comparisons with experiments. Thus, we aim at clarifying also fundamental properties, such as equilibrium contact angles, singularity formation or dewetting rates. This shall form the basis for more complex situations involving evaporation, surfactant monolayers, and slippage, to yield the understanding crucial for many important nanofluidic problems in nature and technology ranging from rupture of the human tear film to the interface dynamics of donor/acceptor polymer solutions used in organic solar cells.
  
  http://www.dfg-spp1506.de/project-seemann-wagner-peschka

Projects as a member

• OT1

  Mathematical modeling, analysis, and optimization of strained Germanium-microbridges

  Prof. Dr. Michael Hintermüller / Prof. Dr. Alexander Mielke / Prof. Dr. Thomas Surowiec / Dr. Marita Thomas

  Project heads: Prof. Dr. Michael Hintermüller / Prof. Dr. Alexander Mielke / Prof. Dr. Thomas Surowiec / Dr. Marita Thomas
  Project members: Dr. Lukas Adam / Dr. Dirk Peschka
  Duration: -
  Status: completed
  Located at: Humboldt Universität Berlin / Weierstraß-Institut
  

  Description

  The goal of the project Mathematical Modeling, Analysis, and Optimization of Strained Germanium-Microbridges is to optimize the design of a strained Germanium microbridge with respect to the light emission. It is a joint project with the Humboldt-University Berlin (M. Hintermüller, T. Surowiec) and the Weierstrass Institute (A. Mielke, M. Thomas), that also involves the close collaboration with the Department for Materials Research at IHP (Leibniz-Institute for Innovative High Performance Microelectronics, Frankfurt Oder).
  
  http://www.wias-berlin.de/projects/ECMath-OT1/

• OT8

  Modeling, analysis, and optimization of optoelectronic semiconductor devices driven by experimental data

  Dr. Marita Thomas

  Project heads: Dr. Marita Thomas
  Project members: Dr. Dirk Peschka
  Duration: 01.06.2017 - 31.12.2018
  Status: completed
  Located at: Weierstraß-Institut
  

  Description

  The goal of the Matheon project D-OT8: Modeling, analysis, and optimization of optoelectronic semiconductor devices driven by experimental data is to optimize the design of a strained germanium microbridge with respect to the light emission. In the funding period June 2016-December 2018 we will develop tools for the parameter identification and optimal design of experiment for optoelectronic applications. The project also involves the close collaboration with the Department for Materials Research at IHP (Leibniz-Institute for Innovative High Performance Microelectronics, Frankfurt Oder).
  
  http://www.wias-berlin.de/projects/ECMath-OT8/

Projects as a guest