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C. Henkel, G. Boedecker, and M. Wilkens
Local fields in a soft matter bubble
Appl. Phys. B 93 (2008) 217-21, special issue "Optics at the nanoscale II".


    The electric field created by a point dipole located in a dielectric void ("bubble") is calculated. We consider a continuous profile of the medium permittivity and find that at large distances, the effective dipole field depends on the model chosen for the bubble walls, in particular their thickness. A boundary layer model is analyzed that gives good agreement with numerical calculations. Our results shed light on the local field correction that has attracted lot of interest lately.

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