Re-use of this resource is governed by a Creative Commons Attribution-
NonCommercial-ShareAlike 4.0 International
https://creativecommons.org/licenses/by-nc-sa/4.0/
creative commons DoITPoMS logo

Random walk simulation

This is a model of a freely jointed polymer chain with n segments, each of length l. The conformation of the chain is decided by a random walk in two dimensions.

Single chain
Segments are added one by one to
illustrate the concept of a random walk.

Mutiple chain
Carry out a random walk multiple times.
Change the values of n and l and observe
the effect on the end-to-end distance.


OUTPUT
CONTROLS








Kuhn length, l:
Segments per random walk, n:
Random walks to perform, x:
Root mean square    Predicted ln1/2
end to end                    
distance           Measured
Random walks completed





Frequency Measured RMS length Measured RMS length