Finite temperature Casimir interaction etween a perfectly conductin g surface and a permea ble surfa ce

Casimir interaction is an important phenomenon which should b e considered in constru cting Nano-devices, M EMS and N EMS. The attraction force between two perfectl y conducting flat plates at zero tem perature for the first time was defined by Casimir:(...) Where Ais the area and His the separation of the plates.We study the finite temperature Casimir force betwee n two flat surfacesof mean separation H, in wh ich the Diri chlet (D) boundary cond ition is imp osed on on e surface and the Neummann(N) bo undary condition on the other one (i.e. mixed B.C.).this force is repulsive as Boy er has shown [۱].Meth ods:We s uppose two flat plates. To study the system at a finite temperature T, we use the Matsubara formalism [۲]. By means of Path integral approach the logarithm of par tition function will be (...)the normal casimir force per unit area reads (...)

کلیدواژه ها:

Casimir interaction ، Finite temperature ، Path integral approach ، mixed boundary condition (mixed B.C.)