Thanks very much, Adrian.
>Dear all,
>
>If memory serves, you can compute the dielectric constant from an MD run
>as the limit, as distance goes to infinity, of the
>overall dipole dipole correlation function.
>
>I am pretty sure one should not try this EVER for an heterogeneous
>system, or even for a single protein or nucleic acid, it just does not work.
>
>For a liquid such as water, it has been done. Just google it.
>
>Remember always, there is no real physical meaning for the dielectric
>constant for a microscopic system.
>
>Adrian
>
>
>Jeffrey wrote:
>> Dear  all,
>> 
>>       The dielectrostatic constant is required for a new material in liquid state in our work. I'd like to know whether there is a way to obtain the constant from theoretical or computation method without experiment?
>> 
>> Any suggestion is greatly appreciated.
>> Thanks very much for the time.
>> 
>> Have a nice day.
>> ----
>> Jeffrey
>> 
>
>-- 
>                           Dr. Adrian E. Roitberg
>                             Associate Professor
>                            Quantum Theory Project
>                           Department of Chemistry
>
>                 Senior Editor. Journal of Physical Chemistry
>                          American Chemical Society
>
>University of Florida                         PHONE 352 392-6972
>P.O. Box 118435                               FAX   352 392-8722
>Gainesville, FL 32611-8435                    Email adrian.qtp.ufl.edu
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Received on Wed Dec 17 2008 - 01:14:26 PST