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@ARTICLE{Kisner:129103,
author = {Kisner, A. and Heggen, Marc and Fischer, Werner and
Tillmann, Karsten and Offenhäusser, Andreas and Kubota, L.
T. and Mourzina, Youlia},
title = {{I}n situ fabrication of ultrathin porous alumina and its
application for nanopatterning {A}u nanocrystals on the
surface of ion-sensitive field-effect transistors},
journal = {Nanotechnology},
volume = {23},
number = {48},
issn = {1361-6528},
address = {Bristol},
publisher = {IOP Publ.},
reportid = {FZJ-2013-00623},
pages = {485301},
year = {2012},
abstract = {In situ fabrication in a single step of thin films of
alumina exhibiting a thickness of less than 100 nm and
nanopores with a highly regular diameter distribution in
order to pattern nanostructures over field-effect devices is
a critical issue and has not previously been demonstrated.
Here we report the fabrication in situ of 50 nm thick
ultrathin nanoporous alumina membranes with a regular pore
size directly over metal-free gate ion-sensitive
field-effect transistors. Depositing thin films of aluminum
by an electron beam at a relatively low rate of deposition
on top of chips containing the transistors and using a
conventional single-step anodization process permits the
production of a well-adhering nanoporous ultrathin layer of
alumina on the surface of the devices. The anodization
process does not substantially affect the electrical
properties of the transistors. The small thickness and pore
size of ultrathin alumina membranes allow them to be
sequentially employed as masks for patterning Au
nanocrystals grown by an electroless approach directly on
the top of the transistors. The patterning process using a
wet chemical approach enables the size of the patterned
crystals to be controlled not only by the dimensions of the
pores of alumina, but also by the concentration of the
reactants employed. Surface modification of these
nanocrystals with alkanethiol molecules demonstrates that
the electrostatic charge of the functional groups of the
molecules can modulate the electrical characteristics of the
transistors. These results represent substantial progress
towards the development of novel nanostructured arrays on
top of field-effect devices that can be applied for chemical
sensing or non-volatile memories.},
cin = {PGI-8 / JARA-FIT / ICS-8 / IEK-1},
ddc = {530},
cid = {I:(DE-Juel1)PGI-8-20110106 / $I:(DE-82)080009_20140620$ /
I:(DE-Juel1)ICS-8-20110106 / I:(DE-Juel1)IEK-1-20101013},
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:000311138100011},
pubmed = {pmid:23124114},
doi = {10.1088/0957-4484/23/48/485301},
url = {https://juser.fz-juelich.de/record/129103},
}