Repulsive Casimir forces between solid materials with high-refractive-index intervening liquids

In order to explore repulsive Casimir or van der Waals forces between solid materials with liquid as the intervening medium, we analyze dielectric data for a wide range of materials as, for example, (p)olytetrafluoroethylene, polystyrene, silica, and more than 20 liquids. Although significant variat...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2010-06, Vol.81 (6), Article 062502
Main Authors: van Zwol, P. J., Palasantzas, G.
Format: Article
Language:English
Subjects:
CASIMIR EFFECT
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CORRELATIONS
DIELECTRIC MATERIALS
DIELECTRIC PROPERTIES
ELECTRICAL PROPERTIES
FLUIDS
FORECASTING
KRAMERS-KRONIG CORRELATION
LIQUIDS
MATERIALS
MINERALS
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXIDE MINERALS
PERMITTIVITY
PETROCHEMICALS
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
PLASTICS
POLYMERS
POLYOLEFINS
POLYSTYRENE
POLYVINYLS
REFRACTIVE INDEX
SILICA
SOLIDS
SYNTHETIC MATERIALS
VAN DER WAALS FORCES
VARIATIONS
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Summary:In order to explore repulsive Casimir or van der Waals forces between solid materials with liquid as the intervening medium, we analyze dielectric data for a wide range of materials as, for example, (p)olytetrafluoroethylene, polystyrene, silica, and more than 20 liquids. Although significant variation in the dielectric data from different sources exists, we provide a scheme based on measured static dielectric constants, refractive indices, and applying Kramers-Kronig consistency to dielectric data to create accurate dielectric functions at imaginary frequencies. The latter is necessary for more accurate force calculations via the Lifshitz theory, thereby allowing reliable predictions of repulsive Casimir forces.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.81.062502