Statistical mechanics of bilayer membrane with a fixed projected area

Details Statistical mechanics of bilayer membrane with a fixed projected area Statistical mechanics of bilayer membrane with a fixed projected area

2003-07-09

arxiv.org/abs/cond-mat/0307213v1

J. Chem. Phys. 120, (2004) 2934

Physics

Condensed Matter

Statistical Mechanics

27 pages, 8 figure

Scientific paper

10.1063/1.1639000

The equilibrium and fluctuation methods for determining the surface tension, $\sigma$, and bending modulus, $\kappa$, of a bilayer membrane with a fixed projected area are discussed. In the fluctuation method the elastic coefficients $\sigma$ and $\kappa$ are measured from the amplitude of thermal fluctuations of the planar membrane, while in the equilibrium method the free energy required to deform the membrane is considered. The latter approach is used to derive new expressions for $\sigma$ and $\kappa$ (as well as for the saddle-splay modulus), which relate them to the pair-interactions between the amphiphiles forming the membrane. We use linear response theory to argue that the two routes lead to similar values for $\sigma$ and $\kappa$. This argument is confirmed by Monte Carlo simulations of a model membrane whose elastic coefficients are calculated using both methods.

Affiliated with

Also associated with

No associations

Rating

Statistical mechanics of bilayer membrane with a fixed projected area does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Statistical mechanics of bilayer membrane with a fixed projected area, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Statistical mechanics of bilayer membrane with a fixed projected area will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-577418