Current fluctuations in nanopores: The effects of electrostatic and 
hydrodynamic interactions

Zorkot, Mira; Golestanian, Ramin; Bonthuis, D. J.

doi:10.1140/epjst/e2016-60152-y

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Current fluctuations in nanopores: The effects of electrostatic and hydrodynamic interactions

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Golestanian, Ramin
Department of Living Matter Physics, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Citation

Zorkot, M., Golestanian, R., & Bonthuis, D. J. (2016). Current fluctuations in nanopores: The effects of electrostatic and hydrodynamic interactions. European Physical Journal - Special Topics, 225(8-9), 1583-1594. doi:10.1140/epjst/e2016-60152-y.

Cite as: https://hdl.handle.net/21.11116/0000-0001-7475-9

Abstract

Using nonequilibrium Langevin dynamics simulations of an electrolyte with explicit solvent particles, we investigate the effect of hydrodynamic interactions on the power spectrum of ionic nanopore currents. At low frequency, we find a power-law dependence of the power spectral density on the frequency, with an exponent depending on the ion density. Surprisingly, however, the exponent is not affected by the presence of the neutral solvent particles. We conclude that hydrodynamic interactions do not affect the shape of the power spectrum in the frequency range studied. © 2016, The Author(s).