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Re: [ESPResSo-users] Applying an External Field

From: Kai Szuttor
Subject: Re: [ESPResSo-users] Applying an External Field
Date: Tue, 15 Dec 2015 10:12:19 +0100
User-agent: Mutt/1.5.23 (2014-03-12)


what you could do is to use a tabulated interaction potential and use
penetrable wall constraints. Just an idea, maybe that helps.


On Wed, Dec 09, 2015 at 10:27:16AM -0600, Salvador H-V wrote:
>    Dear All,
>    I want to simulate a two-dimensional colloidal system of particles
>    interacting through the Debye-HA 1/4ckel potential. But I am also
>    interested in applying an external field that mimics a substrate.
>    Each particle is subjected to A an external potential like this,
>    Uext(xi) = A strength of the external potential * A sin ( constant * x(i)
>    )
>    If I understood well, I can not use the ext_force command neither the
>    tabulated potential.
>    I would really appreciate any suggestions for the implementation.A 
>    At this moment I have only a very simple idea of setting integrate to 1
>    and then apply the external force in x-direction in each step.A 
>    However , I think this is highly inefficient and makes the simulation runs
>    slowly A 
>    A 
>    Thanks in advance.
>    Salvador H-V
>    A 

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