Repulsive Casimir forces produced in rectangular cavities: possible measurements and applications
نویسندگان
چکیده
منابع مشابه
Repulsive Casimir Forces Produced in Rectangular Cavities: Possible Measurements and Applications
We perform a theoretical analysis of a setup intended to measure the repulsive (outward) Casimir forces predicted to exist inside of perfectly conducting rectangular cavities. We consider the roles of the conductivity of the real metals, of the temperature and surface roughness. The possible use of this repulsive force to reduce friction and wear in micro and nanoelectromechanical systems (MEMS...
متن کامل- Function Method for Repulsive Casimir Forces
Since Casimir's paper [1] on the attraction of two neutral parallel (perfectly) conducting plates due to the vacuum uctuations of the electromagnetic eld, a considerable amount of work has been done on this subject, varying from the application of alternative techniques to the exploration of new geometries and theories. Excellent reviews as well as a large list of relevant references on this su...
متن کاملCasimir forces in Bose-Einstein condensates: finite size effects in three-dimensional rectangular cavities
The Casimir force due to thermal fluctuations (or pseudo-Casimir force) was recently calculated for the perfect Bose gas in the slab geometry for various boundary conditions. The Casimir pressure due to quantum fluctuations in a weakly-interacting dilute Bose-Einstein condensate (BEC) confined to a parallel plate geometry was also recently calculated for Dirichlet boundary conditions. In this p...
متن کاملRepulsive and attractive Casimir forces in a glide-symmetric geometry
We describe a three-dimensional geometry in which both attractive and repulsive Casimir forces arise using ordinary metallic materials, as computed via an exact numerical method no uncontrolled approximations . The geometry consists of a zipperlike, glide-symmetric structure formed of interleaved metal brackets attached to parallel plates—because of the interleaving pattern, a net repulsive for...
متن کاملVacuum energy and repulsive Casimir forces in quantum star graphs
Casimir pistons are models in which finite Casimir forces can be calculated without any suspect renormalizations. It has been suggested that such forces are always attractive, but we present several counterexamples, notably a simple type of quantum graph in which the sign of the force depends upon the number of edges. We also show that Casimir forces in quantum graphs can be reliably computed b...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Brazilian Journal of Physics
سال: 2006
ISSN: 0103-9733
DOI: 10.1590/s0103-97332006000200009