What is the Repulsive Casimir Force?

[DukeLuke]

I thought this was an interesting article explaining some of MIT's research on Casimir forces. I didn't even realize machines were being built small enough that they had to deal with these.
http://web.mit.edu/newsoffice/2010/casimir-0511.html

 

[zonde]

To me this article seemed quite interesting too but for different reason. It was interesting to read how this Casimir force is modeled.

Another thing that this article made me think was this. Best traditions of classical physics says that if we have force acting at a distance we can describe it as force field produced by one object that acts locally on another object (as I understand this is similar how it was modeled).

That way we would have quite exotic force field.