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Attraction and unbinding of like-charged rods

Ali Naji·Axel Arnold·Christian Holm·Roland R. Netz
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Abstract

We investigate the effective interaction between two like-charged rods in the regime of large electrostatic coupling parameters using both Molecular Dynamics simulation techniques and the recently introduced strong-coupling theory. We obtain attraction between the rods for elevated Manning parameters accompanied by an equilibrium surface-to-surface separation of the order of the Gouy-Chapman length. A continuous unbinding between the rods is predicted at a threshold Manning parameter of 2/3.

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Ali Naji, Axel Arnold, Christian Holm, Roland R. Netz. 2005-04-18. Attraction and unbinding of like-charged rods. https://doi.org/10.1209/epl%2Fi2003-10275-y

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