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CPP: Chemische Physik und Polymerphysik

CPP 8: SYMPOSIUM Nonequilibrium Phenomena in Soft-Condensed Matter

CPP 8.4: Vortrag

Dienstag, 28. März 2006, 14:45–15:00, ZEU Lich

Phase-field description for the budding of two-component vesicles — •Roger Folch and Uwe Thiele — Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Str. 38, D-01187 Dresden, Germany

We present a diffuse-interface or phase-field model[1] for the dynamics of the budding process of a vesicle induced by phase separation on its membrane. Possible two-dimensional budding mechanisms are explored in addition to known three-dimensional scenarios [2]. The model extends previous developments to simulate two-fluid flow[3] and the dynamics of a vesicle under flow[4] to include the internal dynamics of the membrane (phase-separation) and thus account for its non-static mechanical properties.

[1] R. González-Cinca, R. Folch, R. Benítez, L. Ramírez-Piscina, J. Casademunt and A. Hernández-Machado (cond-mat/0305058), in Advances in Condensed Matter and Statistical Mechanics, pp. 203–236, ed. by E. Korutcheva and R. Cuerno, Nova Science Publishers (New York, 2004).

[2] R. Lipowsky and R. Dimova, J. Phys. Condens. Matt. 15, 31 (2003).

[3] R. Folch, J. Casademunt, A. Hernández-Machado and L. Ramírez-Piscina, Phys. Rev. E 60, 1724; ibid. 1734 (1999).

[4] J. Beacourt, F. Rioual, T. Séon, T. Biben and C. Misbah, Phys. Rev. E 69, 011906 (2004).