Phys. Rev. Lett. 79, 1289–1292 (1997)Counterion-Mediated Attraction between Two Like-Charged RodsReceived 22 April 1997; published in the issue dated 18 August 1997 We present a systematic theoretical approach to counterion-mediated interactions between like-charged rigid polymers, by treating condensed and free counterions as separate species in chemical equilibrium. We find that the condensed counterions introduce charge fluctuations along the length of the rods that give rise to attractive interactions, in quantitative agreement with recent simulations. This is similar to the van der Waals interaction, except that all multipoles, not just dipoles, must be included. © 1997 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.79.1289
DOI:
10.1103/PhysRevLett.79.1289
PACS:
61.20.Qg, 61.25.Hq, 87.15.Da
See AlsoComment: Yan Levin, Jeferson J. Arenzon, and Jürgen F. Stilck, The Nature of Attraction between Like-Charged Rods, Phys. Rev. Lett. 83, 2680 (1999). Reply: B.-Y. Ha and Andrea J. Liu, Ha and Liu Reply:, Phys. Rev. Lett. 83, 2681 (1999). |
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