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@ARTICLE{Nikolaev:861624,
      author       = {Nikolaev, Konstantin and Ermolenko, Yuri and Offenhäusser,
                      Andreas and Ermakov, S. and Mourzina, Youlia},
      title        = {{M}ultisensor {S}ystems by {E}lectrochemical {N}anowire
                      {A}ssembly for the {A}nalysis of {A}queous {S}olutions},
      journal      = {Frontiers in Chemistry},
      volume       = {6},
      issn         = {2296-2646},
      address      = {Lausanne},
      publisher    = {Frontiers Media},
      reportid     = {FZJ-2019-02070},
      pages        = {256},
      year         = {2018},
      abstract     = {The development of electrochemical multisensor systems is
                      driven by the need for fast, miniature, inexpensive,
                      analytical devices, and advanced interdisciplinary based on
                      both chemometric and (nano)material approaches. A
                      multicomponent analysis of complex mixtures in environmental
                      and technological monitoring, biological samples, and cell
                      culture requires chip-based multisensor systems with
                      high-stability sensors. In this paper, we describe the
                      development, characterization, and applications of
                      chip-based nanoelectrochemical sensor arrays prepared by the
                      directed electrochemical nanowire assembly (DENA) of noble
                      metals and metal alloys to analyze aqueous solutions. A
                      synergic action of the electrode transducer function and
                      electrocatalytic activity of the nanostructured surface
                      toward analytes is achieved in the assembled metal nanowire
                      (NW) sensors. Various sensor nanomaterials (Pd, Ni, Au, and
                      their multicomponent compositions) can be electrochemically
                      assembled on a single chip without employing multiple cycles
                      of photolithography process to realize multi-analyte sensing
                      applications as well as spatial resolution of sensor
                      analysis by this single-chip multisensor system. For
                      multi-analyte electrochemical sensing, individual
                      amperometric signals of two or more nanowires can be
                      acquired, making use of the specific electrocatalytic
                      surface properties of the individual nanowire sensors of the
                      array toward analytes. To demonstrate the application of a
                      new electrochemical multisensor platform, Pd-Au, Pd-Ni, Pd,
                      and Au NW electrode arrays on a single chip were employed
                      for the non-enzymatic analysis of hydrogen peroxide,
                      glucose, and ethanol. The analytes are determined at low
                      absolute values of the detection potentials with linear
                      concentration ranges of 1.0 × 10−6 − 1.0 × 10−3 M
                      (H2O2), 1.5 × 10−7 − 2.0 × 10−3 M (glucose), and 0.7
                      × 10−3 − 3.0 × 10−2 M (ethanol), detection limits of
                      2 × 10−7 M (H2O2), 4 × 10−8 M (glucose), and 5.2 ×
                      10−4 M (ethanol), and sensitivities of 18 μA M−1
                      (H2O2), 178 μA M−1 (glucose), and 28 μA M−1 (ethanol),
                      respectively. The sensors demonstrate a high level of
                      stability due to the non-enzymatic detection mode. Based on
                      the DENA-assembled nanowire electrodes of a compositional
                      diversity, we propose a novel single-chip electrochemical
                      multisensor platform, which is promising for acquiring
                      complex analytical signals for advanced data processing with
                      chemometric techniques aimed at the development of
                      electronic tongue-type multisensor systems for flexible
                      multi-analyte monitoring and healthcare applications.},
      cin          = {ICS-8},
      ddc          = {540},
      cid          = {I:(DE-Juel1)ICS-8-20110106},
      pnm          = {523 - Controlling Configuration-Based Phenomena (POF3-523)},
      pid          = {G:(DE-HGF)POF3-523},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:30009159},
      UT           = {WOS:000436840000001},
      doi          = {10.3389/fchem.2018.00256},
      url          = {https://juser.fz-juelich.de/record/861624},
}