BEGIN:VCALENDAR VERSION:2.0 PRODID:Data::ICal 0.22 BEGIN:VEVENT DESCRIPTION:Kimball Milton\, University of Oklahoma\n\n
\n Negative entro py has been known in Casimir systems for some time. For example\, it can o ccur between parallel metallic plates modeled by a realistic Drude permitt ivity. Less well known is that negative entropy can occur purely geometric ally\, say between a perfectly conducting sphere and a conducting plate. T he latter effect is most pronounced in the dipole approximation\, which oc curs when the size of the sphere is small compared to the separation betwe en the sphere and the plate. Therefore\, here we examine cases where negat ive entropy can occur between two electrically and magnetically polarizabl e nanoparticles or atoms\, which need not be isotropic\, and between such a small object and a conducting plate.
\n\n Negative entropy can occ ur even between two perfectly conducting spheres\, between two electricall y polarizable nanoparticles if there is sufficient anisotropy\, between a perfectly conducting sphere and a Drude sphere\, and between a sufficientl y anisotropic \; electrically polarizable nanoparticle and a transvers e magnetic conducting plate.
\n DTSTART:20141106T203000Z LOCATION:Physics Building\, Room 204 SUMMARY:Negative Casimir Entropies in Nanoparticle Interactions END:VEVENT END:VCALENDAR