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@ARTICLE{Ktelhn:138422,
author = {Kätelhön, Enno and Krause, Kay and Singh, Pradyumna S.
and Lemay, Serge G. and Wolfrum, Bernhard},
title = {{N}oise {C}haracteristics of {N}anoscaled {R}edox-{C}ycling
{S}ensors: {I}nvestigations {B}ased on {R}andom {W}alks},
journal = {Journal of the American Chemical Society},
volume = {135},
number = {24},
issn = {1520-5126},
address = {Washington, DC},
publisher = {American Chemical Society},
reportid = {FZJ-2013-04553},
pages = {8874 - 8881},
year = {2013},
abstract = {We investigate noise effects in nanoscaled electrochemical
sensors using a three-dimensional simulation based on random
walks. The presented approach allows the prediction of
time-dependent signals and noise characteristics for redox
cycling devices of arbitrary geometry. We demonstrate that
the simulation results closely match experimental data as
well as theoretical expectations with regard to measured
currents and noise power spectra. We further analyze the
impact of the sensor design on characteristics of the noise
power spectrum. Specific transitions between independent
noise sources in the frequency domain are indicative of the
sensor-reservoir coupling and can be used to identify
stationary design features or time-dependent blocking
mechanisms. We disclose the source code of our simulation.
Since our approach is highly flexible with regard to the
implemented boundary conditions, it opens up the possibility
for integrating a variety of surface-specific molecular
reactions in arbitrary electrochemical systems. Thus, it may
become a useful tool for the investigation of a wide range
of noise effects in nanoelectrochemical sensors.},
cin = {ICS-8 / PGI-8 / JARA-FIT},
ddc = {540},
cid = {I:(DE-Juel1)ICS-8-20110106 / I:(DE-Juel1)PGI-8-20110106 /
$I:(DE-82)080009_20140620$},
pnm = {423 - Sensorics and bioinspired systems (POF2-423) / 453 -
Physics of the Cell (POF2-453) / Helmholtz Young
Investigators Group (HGF-YoungInvestigatorsGroup)},
pid = {G:(DE-HGF)POF2-423 / G:(DE-HGF)POF2-453 /
G:(DE-HGF)HGF-YoungInvestigatorsGroup},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000320899200026},
doi = {10.1021/ja3121313},
url = {https://juser.fz-juelich.de/record/138422},
}