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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},
}