Complete Programme (PDF)

Back to overview


Light guided 3D-structuring of EPS produced by red algae

Sunday (01.01.2040)
00:00 - 21:16
Part of:
- Poster The versatile usage of wrinkled surfaces 1 Bernhard Alexander Glatz
- Poster Penguin feather mimicking oil infused elastomer for anti-icing property 1 Dipl.-Ing. Nguyen Thanh-Binh
- Poster Radiation-based methods for surface modification of supramolecular peptide fibrils 0 Juhaina Bandak
- Poster Investigation of crack propagation of hierarchically structured ceramic materials on different length scales using bending tests 1 Cecilia Müller
- Poster Tobacco mosaic virus disks, preparation of samples to investigate mineralization by low voltage electron microscopy 1 Dr. Sabine Eiben
- Poster Deformation of Liquid-Liquid Phase Boundary as Template for Novel Surface Structured Polymer Particles and Coatings 1 Helena vom Stein
- Poster Sclerenchymatic tissue in Banksia follicles – The effect of moisture on dimensional and mechanical properties 1 Friedrich Reppe
- Poster Reconstructing in-situ nanofibrillar orientation and mechanics in arthropod cuticle using X-ray diffraction modelling 1 Ph.D. Yanhong Wang
- Poster Structural origins of morphing in plant tissues 1 Prof. Dr. Hanoch Daniel Wagner
- Poster What is the effect of cell network topology on the poro-elastic properties of bone? 1 Alexander van Tol
- Poster The fibrillar-level mechanisms of mutability in echinoderm connective tissue analysed using in situ synchrotron small-angle X-ray scattering 1 Dr. Himadri Shikhar Gupta
- Poster Growing bone-like tissues on negative Gaussian curvature surfaces 1 Prof. Dr. John Dunlop
- Poster Gradient porous materials for reliable structured adhesives 1 Ph.D. Di Tan
- Poster Transfer of surface properties of wheat leaves to technical surfaces 1 Miriam Huth
- Poster Damping Behaviour of Bioinspired and Natural Fibre Composites 1 Wilhelm Woigk
- Poster Cancer cells biomineralize ionic gold into nanoparticles-microplates via secreting defense proteins with specific gold-binding peptides 1 Dr. Ajay Vikram Singh
- Poster Microstructural Assessment of Calvarial Fusion in Mice of Different Ages and its Biomechanical Implications 1 Dr. Junning Chen
- Poster Diffusion-limited electroless silver reduction on copper for "porous monocrystal" 1 Dr. Nikolay Ryzhkov
- Poster Multiscale simulations of directed spider dragline silk self-assembly by flow 1 Dipl.-Ing. Ana Herrera
- Poster Inspirational Multiscale Natural Structures 1 Dr. XiaoMeng Sui
- Poster The Exoskeleton of Scorpions: from Structure to Mechanical Function 1 Israel Kellersztein
- Poster Investigating the multilayer fiber-reinforced structure of the wood cell using computer simulations and additive manufacturing 1 Laura Zorzetto
- Poster Light guided 3D-structuring of EPS produced by red algae 1 Moritz Klotz
- Poster Structural optimization of biopolymer composite Cottonid by variation of manufacturing parameters 1 Matthias Langhansl
- Poster Biomineralization of Materials made of Engineered Spider Silk Proteins 1 Vanessa Wicklein
- Poster Micro-Ikebana by Biomimetic Crystallization of Alkaline Earth Carbonates 1 Shota Kobayashi
- Poster Bioinspired hairy surfaces 0 Stefan Müllers
- Poster Reagent-free modification of bio-hydrogels by electron irradiation towards biomedical applications 1 Stefanie Riedel
- Poster Controlled Modification on Wood via SI-ATRP 1 Marta Vidiella del Blanco
- Poster Plant Biomimetics: Surface-Structured Pollen Particles and Transparent Flower Petals 1 Prof. Dr. Olaf Karthaus
- Poster Coupling of polymers to tobacco mosaic virus: towards the production of amphiphilic virus tubes 1 Dr. Sabine Eiben
- Poster Mechanical stable sulfobetainc Hydrogels - A candidate for biomedical application 1 Ramona Bianca Jasmin Ihlenburg
- Poster Structuring V2O5 Nanocomposites to Adapt the Sponge Spicules’ Architecture 1 Achim Diem
- Poster Fibers, Yarns and Non-Woven Meshes – Tough Morphologies Made of Recombinant Spider Silk Proteins 1 Fabian Müller
- Poster Recombinant Spider Silk-based Hybrid Materials for Advanced Energy Technology 1 Tamara Aigner
- Poster Bio-mediated materials syntheses 1 Dr. Daniel Van Opdenbosch
- Poster Design of Biomimetic Thin Coatings Composed of Cellulose Beta-Nanocrystals for Epitaxial Crystallization and Coassembly of 1D Nanoparticles 0 Dipl.-Ing. Zihao Lu
- Poster Seeded Mineralization Leads to Prismatic-Type CaCO3 Thin Coatings with Multiple Structural Functions 0 Ming Li
- Poster Multifunctional Layered Magnetic Composites 1 Christian Debus
- Poster Cuttlebone-inspired Structures for Mechanical Damping 1 Dipl.-Ing. Andrea Knöller

Session P.1: Poster discussion evening
Belongs to:
Session P: Poster Presentation

Contactless light-based structuring approaches such as two-photon-polymerization and laser patterning are long-lasting and steadily expanding fields of research. It allows creating of 3D submicron-sized structures with complex geometries such as undercuts. However, the contactless synthesis of bio-inspired materials with more than three levels of hierarchy would be beneficial, e.g. to obtain mechanical properties that can found in biological materials such as wood. One approach is to use and shape a suitable bio template that is already hierarchically structured and transferring it to an engineering material. Besides fungus, plant or animal tissue, extracellular bio-materials such as exopolysaccharides (EPS) produced by microbes possess such structuring.

To reach ideal conditions for photosynthesis, the red alga Porphyridium purpureum, and other microbes response to light irradiation with directional motion. This so-called phototaxis is accompanied by the excretion of EPS. Under specific illumination, microbes leave tracks of EPS that can be used as biological templates due to their internal hierarchical structure. Contactless light-guidance of the microbes allows to design the EPS-tracks and thus to build an external EPS-structure, which has been demonstrated in 2D-experimental setups. To attain 3D structures, vertical movement of the microbes in a medium with raised viscosity and 3D illumination is necessary. To realise this illumination, the use of a Spatial Light Modulator (SLM) is a possible approach in addition to classical holography. This offers the possibility of creating a dynamic holographic image, providing for image adjustment or layer-by-layer application. The irradiation of SLM results in a real image that can be observed trough a screen or the semitransparent culture medium of the microbes. In this medium, the microbes are expected to move vertically and horizontally to the brightest irradiation and replicate it with EPS.

The structured EPS will be transformed into a metallic or ceramic engineering material by precursors. By this contactless approach we aim at the synthesis of delicately chiselled ceramic or metallic components that feature the structure-derived characteristics of natural materials. An example is the reproduction of small bones such as the ossicle with its complex design and its internal hierarchical structure.


Moritz Klotz
Technical University of Munich (TUM)
Additional Authors:
  • Steffi Deuerling
    Technical University of Munich
  • Sabine Kugler
    Technical University of Munich
  • Dr. Daniel Van Opdenbosch
    Technical University of Munich
  • Prof. Dr. Cordt Zollfrank
    Technical University of Munich