I was following some links and this one came up that
shows another anomaly with crystal forms;
http://unisci.com/stories/19993/0716996.htm
Crystallites Seem To Defy Basic Physical Principle
Oppositely-charged particles don't always attract each
other, according to physicists who have found a new
class of materials that self-assemble into flat,
two-dimensional "crystallites" made from tiny plastic
beads the size of bacteria.
Under the right conditions, their beads seemed to defy
the basic physical principle that oppositely charged
objects attract.
"The controlled manufacture of these microarrays could
mimic and exploit the remarkable organization seen in
many natural biomaterials," says coauthor , a
professor of physics at Penn.
The membrane portion of the material is essentially a
thin, positively charged soaplike bubble. The surface
of the bubble serves as a temporary template on which
numerous negatively charged spheres assemble. But in
many cases, the positively charged membrane attracted
only a few dozen negatively charged spheres, then
repelled all others.
"Every high school student is taught that oppositely
charged objects attract -- so how could the membrane
switch from attracting to repelling the beads?"
The key to the puzzle, the researchers say, is to
remember that objects in water, such as the plastic
beads, are surrounded by an invisible cloud of ions.
Under the experiment's conditions, these ions
spontaneously migrate in such a way as to overwhelm
the membrane's own positive charge, and effectively
reverse it in the region not covered by beads.
The raft of attached beads then has a definite size,
determined ultimately by the membrane's chemical
composition. Far from being just an obscure footnote,
the fact that the particle arrays can be self-limiting
in this way seems to be crucial for the ultimate
formation of the "crystallites."
--- "T. Bastian" <tbastian@dmv.com> wrote:
> Here is the original info source from the UC of
> SanDiego....
>
http://ucsdnews.ucsd.edu/newsrel/science/mccomposite.htm
>
> Some additional info is provided on the reverse
> magnetic and electric permittivity substance made
> out of copper..
>
> Terry Bastian
=====
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as I am writing from my work email of
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