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Berlin 2005 – scientific programme

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CPP: Chemische Physik und Polymerphysik

CPP 30: POSTER: Chemical physics

CPP 30.51: Poster

Tuesday, March 8, 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 Weissflog31Otto-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.

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