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@ARTICLE{Zhang:842606,
author = {Zhang, P. and Bousack, Herbert and Dai, Y. and
Offenhäusser, A. and Mayer, D.},
title = {{S}hell-binary nanoparticle materials with variable
electrical and electro-mechanical properties},
journal = {Nanoscale},
volume = {10},
number = {3},
issn = {2040-3372},
address = {Cambridge},
publisher = {RSC Publ.},
reportid = {FZJ-2018-00819},
pages = {992 - 1003},
year = {2018},
abstract = {Nanoparticle (NP) materials with the capability to adjust
their electrical and electro-mechanical properties
facilitate applications in strain sensing technology.
Traditional NP materials based on single component NPs lack
a systematic and effective means of tuning their electrical
and electro-mechanical properties. Here, we report on a new
type of shell-binary NP material fabricated by self-assembly
with either homogeneous or heterogeneous arrangements of
NPs. Variable electrical and electro-mechanical properties
were obtained for both materials. We show that the
electrical and electro-mechanical properties of these
shell-binary NP materials are highly tunable and strongly
affected by the NP species as well as their corresponding
volume fraction ratio. The conductivity and the gauge factor
of these shell-binary NP materials can be altered by about
five and two orders of magnitude, respectively. These
shell-binary NP materials with different arrangements of NPs
also demonstrate different volume fraction dependent
electro-mechanical properties. The shell-binary NP materials
with a heterogeneous arrangement of NPs exhibit a peaking of
the sensitivity at medium mixing ratios, which arises from
the aggregation induced local strain enhancement. Studies on
the electron transport regimes and micro-morphologies of
these shell-binary NP materials revealed the different
mechanisms accounting for the variable electrical and
electro-mechanical properties. A model based on effective
medium theory is used to describe the electrical and
electro-mechanical properties of such shell-binary
nanomaterials and shows an excellent match with experiment
data. These shell-binary NP materials possess great
potential applications in high-performance strain sensing
technology due to their variable electrical and
electro-mechanical properties.},
cin = {ICS-8},
ddc = {600},
cid = {I:(DE-Juel1)ICS-8-20110106},
pnm = {523 - Controlling Configuration-Based Phenomena (POF3-523)},
pid = {G:(DE-HGF)POF3-523},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29265122},
UT = {WOS:000423259000013},
doi = {10.1039/C7NR07912E},
url = {https://juser.fz-juelich.de/record/842606},
}