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@ARTICLE{Wesche:128612,
      author       = {Wesche, Manuel and Hüske, Martin and Yakushenko, Alexey
                      and Brüggemann, Dorothea and Mayer, Dirk and Offenhäusser,
                      Andreas and Wolfrum, Bernhard},
      title        = {{A} nanoporous alumina microelectrode array for functional
                      cell–chip coupling},
      journal      = {Nanotechnology},
      volume       = {23},
      number       = {49},
      issn         = {1361-6528},
      address      = {Bristol},
      publisher    = {IOP Publ.},
      reportid     = {FZJ-2013-00346},
      pages        = {495303 -},
      year         = {2012},
      abstract     = {The design of electrode interfaces has a strong impact on
                      cell-based bioelectronic applications. We present a new type
                      of microelectrode array chip featuring a nanoporous alumina
                      interface. The chip is fabricated in a combination of
                      top-down and bottom-up processes using state-of-the-art
                      clean room technology and self-assembled generation of
                      nanopores by aluminum anodization. The electrode
                      characteristics are investigated in phosphate buffered
                      saline as well as under cell culture conditions. We show
                      that the modified microelectrodes exhibit decreased
                      impedance compared to planar microelectrodes, which is
                      caused by a nanostructuring effect of the underlying gold
                      during anodization. The stability and biocompatibility of
                      the device are demonstrated by measuring action potentials
                      from cardiomyocyte-like cells growing on top of the chip.
                      Cross sections of the cell–surface interface reveal that
                      the cell membrane seals the nanoporous alumina layer without
                      bending into the sub-50 nm apertures. The nanoporous
                      microelectrode array device may be used as a platform for
                      combining extracellular recording of cell activity with
                      stimulating topographical cues.},
      cin          = {PGI-8 / JARA-FIT / ICS-8},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-8-20110106 / $I:(DE-82)080009_20140620$ /
                      I:(DE-Juel1)ICS-8-20110106},
      pnm          = {423 - Sensorics and bioinspired systems (POF2-423) / 453 -
                      Physics of the Cell (POF2-453)},
      pid          = {G:(DE-HGF)POF2-423 / G:(DE-HGF)POF2-453},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000311431400009},
      doi          = {10.1088/0957-4484/23/49/495303},
      url          = {https://juser.fz-juelich.de/record/128612},
}