How to modify the van der Waals and Casimir forces without change of the dielectric permittivity.
J Phys Condens Matter
; 24(42): 424202, 2012 Oct 24.
Article
en En
| MEDLINE
| ID: mdl-23032183
ABSTRACT
We propose a new experiment on the measurement of the Casimir force and its gradient between a Au-coated sphere and two different plates made of doped semiconductors. The concentrations of charge carriers in the plates are chosen slightly below and above the critical density at which the Mott-Anderson insulator-metal transition occurs. We calculate changes in the Casimir force and the Casimir pressure due to the insulator-metal transition using the standard Lifshitz theory and the phenomenological approach neglecting the contribution of free charge carriers in the dielectric permittivity of insulator materials (this approach was recently supported by the measurement data of several experiments). It is demonstrated that for the special selection of semiconductor materials (S- or Se-doped Si, B-doped diamond) the calculation results using the two theoretical approaches differ significantly and the predicted effects are easily detectable using the existing laboratory setups. In the case that the prediction of the phenomenological approach is confirmed, this would open opportunities to modify the van der Waals and Casimir forces with almost no change of room temperature dielectric permittivity.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Semiconductores
/
Termodinámica
/
Electricidad Estática
/
Metales
/
Modelos Químicos
Tipo de estudio:
Prognostic_studies
/
Qualitative_research
Idioma:
En
Revista:
J Phys Condens Matter
Asunto de la revista:
BIOFISICA
Año:
2012
Tipo del documento:
Article
País de afiliación:
Rusia