Regensburg 2007 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 26: Ferrofluids / Liquid crystals

DY 26.1: Talk

Thursday, March 29, 2007, 10:30–10:45, H3

Localized and Decomposable States at the Rosensweig Instability — •Reinhard Richter — Experimentalphysik 5, Universität Bayreuth, D-95444 Bayreuth

Recently it was demonstrated in experiment [1] and numerics [2] that two-dimensional static localized structures can be generated in the bistable regime of the Rosensweig instability by means of a local perturbation. Here we investigate whether these ferrosolitons are decomposable [3], in the sense that packets of bumps or holes can be created at will. Moreover we show for the first time that information can be stored in the decomposable pattern without any extrinsic grid, as suggested by [4].

• [1] R. Richter, I.V. Barashenkov, Phys. Rev. Lett 94 , 184503 (2005).
• [2] O. Lavrova, G Matthies, T. Mitkova, V. Polevikov and L. Tobiska, J. Phys.: Condens. Matter 18, S2657 (2006).
• [3] P. Coullet, C. Riera, C. Tresser, Phys. Rev. Lett. 84, 3069 (2000).
• [4] P. Coullet, C. Toniolo, C. Tresser, Chaos, 84 193 (2004).