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@ARTICLE{Roth:807071,
author = {Roth, F. and Schmerbauch, C. and Ionescu, E. and Nicoloso,
N. and Guillon, Olivier and Riedel, R.},
title = {{H}igh-temperature piezoresistive {C} / {S}i{OC} sensors},
journal = {Journal of sensors and sensor systems},
volume = {4},
number = {1},
issn = {2194-878X},
address = {Göttingen},
publisher = {Copernicus Publ.},
reportid = {FZJ-2016-02102},
pages = {133 - 136},
year = {2015},
abstract = {Here we report on the high-temperature piezoresistivity of
carbon-containing silicon oxycarbide nanocomposites (C /
SiOC). Samples containing 13.5 $vol\%$ segregated carbon
have been prepared from a polysilsesquioxane via thermal
cross-linking, pyrolysis and subsequent hot-pressing. Their
electrical resistance was assessed as a function of the
mechanical load (1–10 MPa) and temperature (1000–1200
°C). The piezoresistive behavior of the C / SiOC
nanocomposites relies on the presence of dispersed
nanocrystalline graphite with a lateral size ≤ 2 nm and
non-crystalline carbon domains, as revealed by Raman
spectroscopy. In comparison to highly ordered carbon
(graphene, HOPG), C / SiOC exhibits strongly enhanced k
factor values, even upon operation at temperatures beyond
1000 °C. The measured k values of about 80 ± 20 at the
highest temperature reading (T = 1200 °C) reveal that C /
SiOC is a primary candidate for high-temperature
piezoresistive sensors with high sensitivity.},
cin = {IEK-1 / JARA-ENERGY},
ddc = {621.3},
cid = {I:(DE-Juel1)IEK-1-20101013 / $I:(DE-82)080011_20140620$},
pnm = {113 - Methods and Concepts for Material Development
(POF3-113)},
pid = {G:(DE-HGF)POF3-113},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000364051800017},
doi = {10.5194/jsss-4-133-2015},
url = {https://juser.fz-juelich.de/record/807071},
}