منابع مشابه
On the possibility of Casimir repulsion using Metamaterials
It is well known that the Casimir force between two half-spaces is dictated by their electromagnetic properties. In particular, when one of the half-spaces is mainly metallic or dielectric and the other is mainly magnetic, it is possible to show that the force is repulsive. This has attracted lots of interest towards the study of metamterials (MMs) in the context of Casimir effect, as their mag...
متن کاملCasimir Forces in Chiral Metamaterials
We use the extended Lifshitz theory to study the behavior of the Casimir forces between chiral metamaterials and regular metamaterials. We have shown that the chirality, if strong enough, is of critical importance to reduce the Cassimir attractive force and can find new designs to obtain repulsive Casimir forces. We will review chiral metamaterials and find some analytical expression for the st...
متن کاملCasimir repulsion between metallic objects in vacuum.
We give an example of a geometry in which two metallic objects in vacuum experience a repulsive Casimir force. The geometry consists of an elongated metal particle centered above a metal plate with a hole. We prove that this geometry has a repulsive regime using a symmetry argument and confirm it with numerical calculations for both perfect and realistic metals. The system does not support stab...
متن کاملRepulsive Casimir force in chiral metamaterials.
We demonstrate theoretically that one can obtain repulsive Casimir forces and stable nanolevitations by using chiral metamaterials. By extending the Lifshitz theory to treat chiral metamaterials, we find that a repulsive force and a minimum of the interaction energy possibly exist for strong chirality, under realistic frequency dependencies and correct limiting values (for zero and infinite fre...
متن کاملStructural anisotropy and orientation-induced Casimir repulsion in fluids
Alexander P. McCauley,1 F. S. S. Rosa,2,3 Alejandro W. Rodriguez,4,5 John D. Joannopoulos,1 D. A. R. Dalvit,3 and Steven G. Johnson4 1Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA 2Laboratoire Charles Fabry, Institut d’Optique, CNRS, Université Paris-Sud, Campus Polytechnique, RD128, F-91127 Palaiseau Cedex, France 3Theoretical Division, Los A...
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ژورنال
عنوان ژورنال: Journal of Physics A: Mathematical and Theoretical
سال: 2008
ISSN: 1751-8113,1751-8121
DOI: 10.1088/1751-8113/41/16/164015