Referenced in: none

Automatically associated channels: Slo1

Title: Low-frequency noise in solid-state nanopores.

Authors: R M M Smeets, N H Dekker, C Dekker

Journal, date & volume: Nanotechnology, 2009 Mar 4 , 20, 95501

PubMed link: http://www.ncbi.nlm.nih.gov/pubmed/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.