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@ARTICLE{Ingebrandt:58310,
author = {Ingebrandt, S. and Han, Y. and Nakamura, F. and Poghossian,
A. and Schöning, M. J. and Offenhäusser, A.},
title = {{L}abel-free detection of single nucleotide polymorphisms
utilizing the differential transfer function},
journal = {Biosensors and bioelectronics},
volume = {22},
issn = {0956-5663},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {PreJuSER-58310},
pages = {2834 - 2840},
year = {2007},
note = {Record converted from VDB: 12.11.2012},
abstract = {We present a label-free method for the detection of DNA
hybridization, which is monitored by non-metallized silicon
field-effect transistors (FET) in a microarray approach. The
described method enables a fast and fully electronic readout
of ex situ binding assays. The label-free detection
utilizing the field-effect is based on the intrinsic charge
of the DNA molecules and/or on changes of the solid-liquid
interface impedance, when biomolecules bind to the sensor
surface. With our sensor system, usually a time-resolved, dc
readout is used. In general, this FET signal suffers from
sensor drift, temperature drift, changes in electrolyte
composition or pH value, influence of the reference
electrode, etc. In this article, we present a differential
ac readout concept for FET microarrays, which enables a
stable operation of the sensor against many of these
side-parameters, reliable readout and a possibility for a
quick screening of large sensor arrays. We present the
detection of point mutations in short DNA samples with this
method in an ex situ binding assay.},
keywords = {Biosensing Techniques: instrumentation / Biosensing
Techniques: methods / DNA: analysis / DNA: genetics /
Nucleic Acid Hybridization / Polymorphism, Single Nucleotide
/ Potentiometry / Transistors, Electronic / DNA (NLM
Chemicals) / J (WoSType)},
cin = {CNI / IBN-2 / JARA-FIT},
ddc = {570},
cid = {I:(DE-Juel1)VDB381 / I:(DE-Juel1)IBN-2-20090406 /
$I:(DE-82)080009_20140620$},
pnm = {Grundlagen für zukünftige Informationstechnologien},
pid = {G:(DE-Juel1)FUEK412},
shelfmark = {Biophysics / Biotechnology $\&$ Applied Microbiology /
Chemistry, Analytical / Electrochemistry / Nanoscience $\&$
Nanotechnology},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:17187976},
UT = {WOS:000247555300010},
doi = {10.1016/j.bios.2006.11.019},
url = {https://juser.fz-juelich.de/record/58310},
}