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

P. J. van Zwol*, G. Palasantzas

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

60 Citations (Scopus)
54 Downloads (Pure)

Abstract

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.

Original languageEnglish
Article number062502
Pages (from-to)062502-1-062502-9
Number of pages9
JournalPhysical Review A
Volume81
Issue number6
DOIs
Publication statusPublished - 7-Jun-2010

Keywords

  • MOLAR ABSORPTION-COEFFICIENTS
  • ACCURATE OPTICAL-CONSTANTS
  • DIPOLE-MOMENT DERIVATIVES
  • DER-WAALS INTERACTION
  • SURFACE FREE-ENERGIES
  • OSCILLATOR-STRENGTHS
  • INFRARED INTENSITIES
  • VIBRATIONAL ASSIGNMENT
  • CARBON-TETRACHLORIDE
  • DIELECTRIC-CONSTANTS

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