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Calculation of local dielectric permittivity of confined liquids from spatial dipolar correlations

Abstract : We report the working expressions of calculation of local dielectric permittivity (epsilon(r)) under nanoconfinement from dipolar spatial correlations. Three confined geometries are investigated: planar, cylindrical and spherical interfaces. We apply these relations to the calculation of the local components of epsilon(r) of water confined in a porous silica framework. Microscopically we highlight that the dielectric profile is correlated to the density of water and hydrogen bonding network.
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-00870061
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Submitted on : Friday, October 4, 2013 - 5:52:36 PM
Last modification on : Thursday, March 5, 2020 - 2:04:45 PM

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Aziz Ghoufi, Anthony Szymczyk, Richard Renou, Minxia Ding. Calculation of local dielectric permittivity of confined liquids from spatial dipolar correlations. EPL - Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2012, 99 (3), pp.37008. ⟨10.1209/0295-5075/99/37008⟩. ⟨hal-00870061⟩

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