Berlin 2005 – wissenschaftliches Programm
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CPP: Chemische Physik und Polymerphysik
CPP 30: POSTER: Chemical physics
CPP 30.51: Poster
Dienstag, 8. März 2005, 16:30–18:30, Poster TU D
Free standing liquid filaments: structure, mechanical and electrical properties — •Alexandru Nemes1, Alexey Eremin1, Mario Schulz2, Ralf Stannarius1, Hajnalka Nádasi3, and Wolfgang Weissflog3 — 1Otto-von-Guericke-Universität Magdeburg, Institut für Experimentelle Physik — 2LKA Sachsen-Anhalt — 3Martin-Luther-Universität Halle, Institut für Physikalische Chemie
Simple liquids cannot form filaments with lengths exceeding their diameter by more than a factor of π because of the Rayleigh-Plateau instability. However, there are examples of stable filaments with slenderness ratios exceeding 1000, formed by complex fluids, e.g. bent-core liquid crystals.
Similar fibers can be found in nature, for example, spider silk undergoes a mesophase transition in the spinning process.
In our work, we present the results of experiments performed on several bent-core liquid crystalline materials which form filaments with radii of few micrometers, and axial extension of several millimeters.
In particular, we report mechanical, AFM, X-Ray and optical measurements that reveal the internal structure, dynamics and mechanical and electrical properties of these filaments.