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@ARTICLE{Bachmann:827793,
author = {Bachmann, B. and Offenhäusser, A. and Wolfrum, B. and
Yakushenko, A. and Adly, Nouran and Krause, Kay},
title = {{T}hree-dimensional inkjet-printed redox cycling sensor},
journal = {RSC Advances},
volume = {7},
number = {9},
issn = {2046-2069},
address = {London},
publisher = {RSC Publishing},
reportid = {FZJ-2017-01893},
pages = {5473 - 5479},
year = {2017},
abstract = {Multilayer inkjet printing is emerging as a robust platform
for fabricating flexible electronic devices over a large
area. Here, we report a straightforward, scalable and
inexpensive method for printing multilayer three-dimensional
nanoporous redox cycling devices with a tunable nanometer
gap for electrochemical sensing. The fabrication of the
electrochemical redox cycling device is based on vertical
stacking of two conductive electrodes made of carbon and
gold nanoparticle inks. In this configuration, the two
electrodes are parallel to each other and electrically
separated by a layer of polystyrene nanospheres. As the top
and the bottom electrodes are biased to, respectively,
oxidizing and reducing potentials, repetitive cycling of
redox molecules between them generates a large current
amplification. We show that a vertical interelectrode
spacing down to several hundred nanometers with high
precision using inkjet printing is possible. The printed
sensors demonstrate excellent performance in electrochemical
sensing of ferrocene dimethanol as a redox-active probe. A
collection efficiency of $100\%$ and current amplification
up to 30-fold could be obtained. Our method provides a low
cost and versatile means for sensitive electrochemical
measurements eliminating the need for sophisticated
fabrication methods, which could prove useful for sensitive
point-of-care diagnostics devices.},
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 = {523 - Controlling Configuration-Based Phenomena (POF3-523)
/ 552 - Engineering Cell Function (POF3-552)},
pid = {G:(DE-HGF)POF3-523 / G:(DE-HGF)POF3-552},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000393753200068},
doi = {10.1039/C6RA27170G},
url = {https://juser.fz-juelich.de/record/827793},
}