Anomalous dielectric behavior of water in ionic Newton Black films

Jordi Faraudo, Fernando Bresme

Research output: Contribution to journalArticleResearchpeer-review

68 Citations (Scopus)


The molecular dynamics simulations were used to investigate the electrostatics of two charged surfactant layers in aqueous media (surfactant/water/surfactant films). In the films studied, the polarization was maximum at the interfaces and decayed from the interfaces inside the aqueous core with a decay length of order of ∼10 Å. The results were found inconsistent with a local relation between the water polarization and the electric field. The electrostatic potential inside the aqueous core of the films was found to be completely different from that expected for a film containing a dielectric medium with dielectric constant of water.
Original languageEnglish
Article number236801
JournalPhysical Review Letters
Issue number23
Publication statusPublished - 11 Jun 2004


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