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Simulation of structure formation in lipid membrane under shear




Dr. Hayato Shiba 
Institute for Solid State Physics, University of Tokyo


Anfang
27.09.2012 11:00 Uhr
Ende
27.09.2012
Veranstaltungsort
Seminarraum 2001, Geb. 04.16

Theorie-Seminar

Several types of meshless models for surfactant membranes,
 which are particle-based solvent-free methods (i.e. topologically
 unconstrained), have recently been developed and applied for
 phenomena including membrane rupture, self-assembly, buckling,   
 and other types of structure formation.  We extend one of them into
 an explicit-solvent model to study structure formation dynamics
 where hydrodynamics of the solvent matter. Especially, we
 deal with dynamics of multi-lamellar structures under shear.
 We find the membranes exhibit buckling instabilities with
 appropriately high shear rate and membrane volume fraction.  
 In addition to the model descriptions and the simulation results,
 the scheme of parallelized molecular dynamics, which is employed
 in our study in conjunction with DPD-type thermostats, will also be
 mentioned a bit in detail.

 References
  [1] H. Shiba, H. Noguchi, and G. Gompper, in preparation
  [2] H. Shiba and H. Noguchi, Phys. Rev. E 84, 031926 (2011).  

Kontakt

Prof. Dr. Gerhard Gompper
Telefon: +49 2461 61-4012
Fax: +49 2461 61-3180
E-Mail: g.gompper@fz-juelich.de

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