✦ LIBER ✦

Forces between surfaces with surface-specific interactions in a dilute electrolyte

✍ Scribed by Rudi Podgornik

Publisher: Elsevier Science
Year: 1989
Tongue: English
Weight: 324 KB
Volume: 156
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(89)87083-6

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✦ Synopsis

We have investigated the forces between two surfaces, immersed in a dilute electrolyte solution, interacting specifically with the ions that are in their immediate vicinity. It is found that at large separations the free energy decays exponentially (the decay length being approximately half the Debye length) with separation, while the magnitude of the force depends on the physical properties of the surfaces and their interactions with the nearby ions. This long-range attractive force could well represent a case for the electrostatic nature of the surface-specific very long-range "hydrophobic" interaction.

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