Dear Paul Safier,

That's a tricky problem. If you need a precise solution, you are in
trouble. If you need a first estimate, then try to do some research on
mixing formulars from people like Garnett, Bruggeman, Looyenga or
Berman. A starting point would be:
http://www.mtheiss.com/docs/sc2_tu2/ex1_step2.htm

Some more specific information can be found in: IEEE Transactions on
antennas and propagation. Foe example: "Novel Material with narrow-band
transperency window in the bulk" written by C.A. Kyriazidou et al. (vol.
48, no1, pp.107-117). Although this is a more theoretical paper, there
are also lots of other references.

I hope this helps!

Stephan

___________________________________________________________

Stephan Biber
University of Erlangen-Nuremberg
Institute for Microwave Technology
Lehrstuhl fuer Hochfrequenztechnik
Cauerstr. 9
91058 Erlangen
GERMANY
Tel. (49) 9131 85 27223
Fax. (49) 9131 85 27212
[email protected]
Raum 5.29
www.lhft.de
http://www.lhft.eei.uni-erlangen.de/lhft.php3?id=mitarbeiter&pg=main&who=stephan

____________________________________________________________




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>------------------------------------------------------------------------
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>Today's Topics:
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>   1. Effective Dielectric Constant of a Suspension of Spheres
>      (paul safier)
>
>
>
> ------------------------------------------------------------------------
>
> Betreff:
> [mems-talk] Effective Dielectric Constant of a Suspension of Spheres
> Von:
> "paul safier" 
> Datum:
> Fri, 16 Jan 2004 14:37:23 -0700
> An:
> [email protected]
>
>
> Hello,
>
> I need to estimate the effective dielectric constant for a dilute
> suspension of spheres of barium titanate (0.025 Vol %,
> epsilon=300-10,000) in castor oil (epsilon=4). Can anyone offer a
> suggestion?
>
> Thank you.
> Paul Safier
>
>
>
> **********************************************************************
> Paul Safier
> Department of Chemical Engineering
> University of Arizona
> (520) 275-0824
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