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  • Title: Low-frequency noise in solid-state nanopores.
    Author: Smeets RM, Dekker NH, Dekker C.
    Journal: Nanotechnology; 2009 Mar 04; 20(9):095501. PubMed ID: 19417488.
    Abstract:
    Low-frequency ionic current noise in solid-state nanopores imposes a limitation on the time resolution achieved in translocation experiments. Recently, this 1/f noise was described as obeying Hooge's phenomenological relation, where the noise scales inversely with the number of charge carriers present. Here, we consider an alternative model in which the low-frequency noise originates from surface charge fluctuations. We compare the models and show that Hooge's relation gives the best description for the low-frequency noise in solid-state nanopores over the entire salt regime from 10(-3) to 1.6 M KCl.
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