Showing papers by "Udo Seifert published in 1992"

Dual network model for red blood cell membranes.

Abstract: A two-component network is studied by Monte Carlo simulation to model the lipid/spectrin membrane of red blood cells. The model predicts that the shear modulus decreases rapidly with the maximum length of the model spectrin and should be in the 10-7 J/m2 range for human red blood cells. A simplified model for the isolated spectrin network shows a negative Lame coefficient λ. Transverse fluctuations of the dual membrane are found to be fluidlike over the range of wavelengths investigated.

Budding transition for bilayer fluid vesicles with area-difference elasticity

Abstract: We consider a curvature model for bilayer vesicles with an area-difference elasticity or non-local bending-energy term Such a model interpolates between the bilayer-couple and spontaneous-curvature models We report preliminary results for the budding transition The shape transformation between the dumbbell and the pear phases can be continuous or discontinuous depending on the ratio of the non-local to the local bending rigidities