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Dielectric profile of interfacial water and its effect on double-layer capacitance.

Abstract:
The framework for deriving tensorial interfacial dielectric profiles from bound charge distributions is established and applied to molecular dynamics simulations of water at hydrophobic and hydrophilic surfaces. In conjunction with a modified Poisson-Boltzmann equation, the trend of experimental double-layer capacitances is well reproduced. We show that the apparent Stern layer can be understood in terms of the dielectric profile of pure water.

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Journal:
Physical review letters
Volume:
107
Issue:
16
Pages:
166102
Publication date:
2011-10-05
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:6cfb6ab9-7630-4190-879b-d99bb2495c12
Source identifiers:
353610
Local pid:
pubs:353610
Language:
English

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