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Bioinspired surface modification and analysis

Many modern applications are inspired by nature or imitating natural systems. Therefore pollens serve as inspiration for the design of structure and function of adherent surfaces in the DFG funded project (HO 4200/3-1). The microstructure of pollens is reproduced via etching techniques on silicon-wafers by our project partners at the University of Freiburg (IMTEK). The nano-scale pollen surface functionalization can be replicated in a first approximation using dip coating with polyelectrolytes on silicon-wafers. These manufactured surfaces are investigated with microscopic, spectroscopic and electrochemical methods.

SEM image of Bellis perennis (daisy) pollen
AFM image of (Poly-allyl amine / Poly-L-glutamic acid)<sub>8</sub> coated planar Si-wafer (<b>a</b>), cross section along the white line in a (<b>b</b>)
[1] X. Vinzenz, E. Hüger, M. Himmerlich, S. Krischok, S. Busch, J. Wöllenstein,
C. Hoffmann, Preparation and characterization of
poly-(L-histidine)/poly-(L-glutamic acid) multilayer on silicon with nanometer-sized surface structures, J. Colloid Interface Sci. (2012) in press: DOI 10.1016/j.jcis.2012.07.057
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