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Accueil du site > Publications > Publications 2010 > Thermal Casimir-van der Waals Interaction between Randomly Charged Dielectrics

Thermal Casimir-van der Waals Interaction between Randomly Charged Dielectrics

Ali Naji, David S. Dean, Jalal Sarabadani, Ron R. Horgan, Rudolf Podgornik

par David Dean - 20 décembre 2009

Monopolar charge disorder effects are studied in the context of fluctuation-induced interactions between neutral dielectric slabs. It is shown that quenched bulk charge disorder gives rise to an additive contribution to the net interaction force which decays as the inverse distance between dielectric surfaces. This effect may thus completely mask the standard Casimir—van der Waals effect. By contrast, annealed (bulk or surface) charge disorder leads to a net interaction force whose large-distance behavior coincides with the universal Casimir force between perfect conductors, which scales as inverse cubic distance, and the dielectric properties enter only in subleading corrections.