The Role of Magnetoplasmons in Casimir Force Calculations

Esquivel‐Sirvent, R.; Garcı́a-Serrano, R.; Palomino-Ovando, M.; Cocoletzi, G. H.

doi:10.1142/9789814289931_0028

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2012

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“…Podogornik studied the effect of spatial dispersion in the solvent, filling the space between two slabs described by a local dielectric function. Recently, the role of spatial dispersion in the accurate calculation of the Casimir force was studied. − In particular, the importance of including spatial effects at finite temperature was used to resolve recent controversies regarding the violation of Nerst’s heat theorem in Lifshitz theory. , …”

Section: Introductionmentioning

confidence: 99%

Spatial Nonlocality in the Calculation of Hamaker Coefficients

Esquivel‐Sirvent

Schatz

2012

J. Phys. Chem. C

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We study the effects of spatial dispersion or nonlocality in the calculation of the Hamaker coefficient. Using a hydrodynamic model to describe the dielectric function of the materials, we show that at small separations, less that 10 nm, the Hamaker coefficient decreases significantly when a nonlocal dielectric is used. As a case study we compute the van der Waals interaction between two Au nanospheres and between two Au parallel nanorods. In both cases, the interaction energy shows variations of up to 2 orders of magnitude between the local and nonlocal cases. We show that at the nanoscale the usual approach to the calculation of the Hamaker coefficients has to be modified to properly take into account the dielectric properties of the nanoparticles.

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