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Poster

Bioinspired hairy surfaces

Sunday (01.01.2040)
00:00 - 21:11
Part of:
Line-Up:
- 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


Nature often uses hairy surfaces to control the interaction of an organism with its environment. Examples are water repellent plant surfaces [1], the strong adhesion of gecko feet on surfaces [2] or the insulating properties of animal fur [3] to name only a few. Many strategies have been reported to generate such surfaces. Among these are conventional methods such as lithography [4] or microreplication [1]. These techniques, however, are often limited to rather small sample areas and low aspect ratios. We have developed a template assisted method, which addresses these issues. In our process we use porous membranes as templates for microreplication and/or nanodrawing. The aspect ratio of the hairs depends on fabrication parameters such as temperature, time or pore size. In this presentation we will concentrate on conditions needed to accomplish nanodrawing and, hence, long hairs with high aspect ratio. This process requires a balance between the frictional force inside the pore during pull-out and the yield force of the polymer. A theoretical model on these two parameters will be presented and the results of these calculations fit well with our experimental results using HDPE (high density polyethylene) as substrate and a PC (polycarbonate) template (pore diameter 0.6 µm – 10 µm). Furthermore, we will show that the wetting properties of the substrate can be rendered superhydrophobic by this approach.




References

[1] Hsu, S., Woan, K., & Sigmund, W. Materials Science & Engineering R, 72(10), 189–201 (2011).

[2] Lee, D. Y., Lee, D. H., Lee, S. G. & Cho, K. Soft Matter 8, 4905 (2012).

[3] Nasto, A., Regli, M., Brun, P., Clanet, C. & Hosoi, A. E. Phys. Rev. Fluids 1, 33905 (2016).

[4] Chen, F. et al. ACS Appl. Mater. Interfaces 5, 6777−6792 (2013).

 

Speaker:
Stefan Müllers
University of Freiburg
Additional Authors:
  • Dr. Katrin-Stephanie Tücking
    University of Freiburg
  • Prof. Dr. Jürgen Rühe
    University of Freiburg

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