Microstructures in Biomaterials and Chemistry

Structure Formation


Biomimetic material research focuses on the identification of structural features of biological specimen that are responsible for remarkable material properties and on the replication of these relevant micro- and nanostructural features into manmade materials. Our research concentrates on the engineering of meso- and microscaled structures from softmatter materials. The structures are prepared by lithographic technologies (Softlithography, E-beam lithography and 2-Photon lithography) or  by controlled self-assembly processes. The fundamental understanding of self-organization processes in confined microenvironment is a requirement for  the combination of top-down based microstructure technologies and bottom up based strategies for mimicking biological structures in synthetic materials.

Use of chemical functionalized magnetic microswimmers that will allow the spatial and temporal control over molecular self-organization will be explored in future cooperative research with the group of Ambarish Ghosh ( Center of Nanoscience and Engineering , Indian Institute of Science, Bangalore)

Group Members

  • Robin Abraham Nadar
  • Andrea Tomita
  • Ladan Jiracek

Cooperations with Indian Institute of Science

Ambarish Ghosh , Center of Nanoscience and Engineering


Fields of Research

Research of the microstructure group is oriented along the following lines: 

Instrumentation and Technologies

  • Low Voltage SEM (Zeiss Gemini)
  • Electron Beam Lithography (Raith Elphy)
  • 2 Photon Lithography (LZH)
  • Invers Light Microscope (Zeiss Axivert 135)
  • Reflective Light Microscope / DIC / DF (Zeiss Axioskop)
  • AFM integrated into light microscope (SIS/Bruker)
  • Micromanipulation tools (Narishige Manipulator)
  • Thermal Evaporation Unit (Univex 300)
  • Spin coater
  • Dip coating unit
  • PRINT (Particle Replication in Non Wetting Templates)
  • PDMS based Softlithography


  • Self organisation of ultrathin PEO layers on surfaces 
  • Integration of magnetically actuated nanostructures into complex 3d microstrcutures and their test as local probes for microscale rheology of self assembled oligopeptide gels (DFG - Project for preparation on future cooperation with India partners )

Selected Publications

  1. Meyer, E.; Braun, H.-G.
    Film formation of crystallizable polymers on microheterogeneous surfaces more
    Journal of Physics : Condensed Matter 17 (2005) S623-S635

  2. Zimmermann, R.; Kratzmüller, Th.; Erickson, D.; Li, D.; Braun, H.-G.; Werner, C.
    Ionic Strength-Dependent pK-Shift in the Helix-Coil Transition of Grafted Poly(L-glutamic acid) Layers Analyzed by Electrokinetic and Ellipsometric Measurements more
    Langmuir 20 (2004) 2369-2374

  3. Wang, M.; Braun, H.-G.; Meyer, E.
    Transition of Crystal Growth as a Result of Changing Polymer States in Ultrathin Poly(ethylene oxide)/Poly(methyl methacrylate) Blend Films with Thickness of <3 nm more
    Macromolecules 37 (2004) 437-445

  4. Wang, M.; Braun, H.-G.; Meyer, E.
    Crystalline structures in ultrathin poly(ethylene oxide)/poly(methyl methacrylate) blend films more
    Polymer 44 (2003) 5015-5021

  5. Braun, H.-G.; Meyer, E.; Wang, M.
    Dendritic Growth of Polyethylene Oxide on Patterned Surfaces more
    Springer 606 (2003) 238-251

  6. Wang, M.; Braun, H.-G.; Meyer, E.
    Branched Crystalline Patterns Formed Around Poly(ethylene oxide) Dots in Humidity more
    Macromolecular Rapid Communications 23 (2002) 853-858

  7. Wang, M.; Braun, H.-G.; Meyer, E.
    Patterning of Polymeric/Inorganic Nanocomposite and Nanoparticle Layers more
    Chemistry of Materials 14 (2002) 4812-4818

  8. Wang, M.; Braun, H.-G.; Kratzmüller, Th.; Meyer, E.
    Patterning Polymers by Micro-Fluid-Contact Printing more
    Advanced Materials 13 (2001) 1312-1317

  9. Meyer, E.; Braun, H.-G.
    Controlled dewetting processes on microstructured surfaces - a new procedure for thin film microstructuring more
    Macromolecular Materials and Engineering 276/277 (2000) 44-50

Microstructures in Biomaterials and Chemistry
Microstructures in Biomaterials and Chemistry


Institute of Biofunctional Polymer Materials

Fields of Work

Charging and Structure Formation at Biointerfaces

Microstructures in Biomaterials and Chemistry