Noise Characteristics of Nanoscaled Redox-Cycling Sensors: Investigations Based on Random Walks.
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 sim...
| Publicado en: | Journal of the American Chemical Society Vol. 135; no. 24; pp. 8874 - 8882 |
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| Autores principales: | , , , , |
| Formato: | Artículo |
| Publicado: |
American Chemical Society
6/19/2013
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=89498663&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 89498663 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00027863 ACS jtl: Journal of the American Chemical Society issn: 00027863 maglogo: N pubinfo: dt: 6/19/2013 vid: 135 iid: 24 pid: 997 pub: American Chemical Society artinfo: ui: 89498663 10.1021/ja3121313 ppf: 8874 ppct: 8 formats: tig: atl: Noise Characteristics of Nanoscaled Redox-Cycling Sensors: Investigations Based on Random Walks. aug: au: Kätelhön, Enno Krause, Kay J. Singh, Pradyumna S. Lemay, Serge G. Wolfrum, Bernhard affil: Institute of Bioelectronics (PGI-8/ICS-8) and JARA—Fundamentals of Future Information Technology, Forschungszentrum Jülich, 52425 Jülich, Germany MESA+ Institute for Nanotechnology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands Institute of Physics, RWTH Aachen University, 52074 Aachen, Germany su: Oxidation-reduction reaction Random walks Noise Electrochemical sensors Simulation methods & models Boundary value problems Power spectra sug: subj: Oxidation-reduction reaction Random walks Noise Electrochemical sensors Simulation methods & models Boundary value problems Power spectra ab: 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. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2013 holdings: @attributes: islocal: N |
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