Regensburg 2016 – wissenschaftliches Programm
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MM: Fachverband Metall- und Materialphysik
MM 26: Poster session II
MM 26.12: Poster
Dienstag, 8. März 2016, 18:30–20:30, Poster B3
Orientation changes upon attachment of spider hairs investigated in situ using scanning X-ray nanobeam diffraction and small-angle scattering — •Silja Flenner1, Clemens Schaber2, Igor Krasnov1, Stanislav Gorb2, Christina Krywka3, Emanuela Di Cola4, Martin Rosenthal4, Manfred Burghammer4, and Martin Müller1,3 — 1Institute of Experimental and Applied Physics, Kiel University, Germany — 2Institute of Zoology, Kiel University, Germany — 3Institute of Materials Research, Helmholtz-Zentrum Geesthacht, Germany — 4ESRF, Grenoble, France
The hairy attachment system of spiders enables these animals to walk upside-down on rough and smooth surfaces and support a multiple of the body weight without the use of glue. These outstanding biological structures comprise of pads including hundreds to thousands of specially designed hairs that are made of composite materials consisting of proteins and reinforcing chitin fibres.
The technique of high spatial resolution mapping based on scanning X-ray nanobeam diffraction and small-angle scattering was used to study the hairy attachment system of spiders. Each point of a map represents a structural parameter such as orientation or scattered intensity extracted from a diffraction pattern. This technique was combined with an in situ attachment/detachment procedure. The goal of our study is to gain an in-depth understanding of the working principle of the attachment and detachment processes of single hairs to a surface.