dd_wormchain

Worm-like chain model near the rigid limit

Syntax

info = dd_wormchain()
P = dd_wormchain(r,param)
Parameters
  • r - Distance axis (N-array)
  • param - Model parameters
Returns
  • P - Distance distribution (N-array)
  • info - Model information (struct)

Model

Variable Symbol Default Lower Upper Description
param(1) L 3.7 1.5 10 Contour length
param(2) L_p 10 2 100 Persistence length

Example:

../_images/model_dd_wormchain.png

Description

info = dd_wormchain()

Returns an info structure containing the specifics of the model:

  • info.model - Full name of the parametric model.
  • info.nparam - Total number of adjustable parameters.
  • info.parameters - Structure array with information on individual parameters.
P = dd_wormchain(r,param)

Computes the distance distribution model P from the axis r according to the parameters array param. The required parameters can also be found in the info structure.

References

[1] J. Wilhelm, E. Frey, Phys. Rev. Lett. 77(12), 2581-2584 (1996) DOI: 10.1103/PhysRevLett.77.2581