DPG Phi
Verhandlungen
Verhandlungen
DPG

Berlin 2008 – scientific programme

Parts | Days | Selection | Search | Downloads | Help

BP: Fachverband Biologische Physik

BP 18: Biomaterials

BP 18.3: Talk

Wednesday, February 27, 2008, 16:30–16:45, PC 203

Structure determination of spider silk from X-ray images — •Stephan Ulrich1, Martin Meling2, Anja Glisovic3, Tim Salditt3, and Annette Zippelius11Universität Göttingen, Institut für Theoretische Physik — 2Max-Planck-Institut für biophysikalische Chemie, Göttingen — 3Universität Göttingen, Institut für Röntgenphysik

Spider silk consists of interconnected crystallites, which are typically aligned along the fiber axis. We present a method to systematically determine the structure of these crystallites. Hereby we introduce a model that calculates the scattering function G(q) which is fitted to the measured X-ray image (silk from nephila clavipes). With it, the crystallites’ size, the constitution and dimensions of their unit cell, as well as their tilt with respect to the fiber axis is identified, and furthermore the effect of coherent scattering from different crystallites is investigated. The shown methods and the presented model can easily be generalized to a wide class of composite materials.

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2008 > Berlin