Issue |
EPL
Volume 81, Number 5, March 2008
|
|
---|---|---|
Article Number | 50006 | |
Number of page(s) | 6 | |
Section | General | |
DOI | https://doi.org/10.1209/0295-5075/81/50006 | |
Published online | 19 February 2008 |
Brownian dynamics simulations of flicker noise in nanochannels currents
1
M. Smoluchowski Institute of Physics, Jagiellonian University - Reymonta 4, PL-30-059 Kraków, Poland
2
Institut für Physik, Universität Augsburg - D-86135 Augsburg, Germany
Received:
8
November
2006
Accepted:
17
January
2008
We simulated the single-file motion of ions through a model
channel with the gate which opens and closes under influence of white noise and of interactions with ions present inside the
channel. There is a range of the model parameters, in which the power spectrum of the ion net current through the channel
has the characteristics of the flicker noise. The flicker noise is accompanied by the long-tail dwell-time distributions.
The stochastic analysis of the calculated currents reveals their self-similarity. The open-state currents scale with the scaling exponent
β=-1.0±0.15. To our best knowledge, our results are the first
derivation of
noise directly from Langevin equations with simple electrostatic
interactions and white noise.
PACS: 05.40.Ca – Noise / 02.70.-c – Computational techniques; simulations / 47.61.-k – Micro and nano-scale flow phenomena
© EPLA, 2008
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.