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Long-range attraction between charge-mosaic surfaces across water.

Abstract:

We have measured directly the forces across water between hydrophilic surfaces covered with a random mosaic of positive and negative charged domains. We find a strong, long-ranged attraction between them at a surface separation comparable with the charge domain size (many tens of nanometers). This attraction persists at higher salt concentration, but its range then becomes comparable to the Debye screening length. We attribute the attraction to correlation between negative and positive region...

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Publication status:
Published

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Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Physical and Theoretical Chem
Journal:
Physical review letters
Volume:
96
Issue:
3
Pages:
038301
Publication date:
2006-01-05
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:1cbfdd94-a422-468b-bd9f-6a9ba1f3d8f3
Source identifiers:
33397
Local pid:
pubs:33397

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