Design magneto‐dielectric elastomer composites for flexible electric/magnetic field response multi‐mode sensors
Polymer Composites,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 14, 2025
Abstract
With
the
increasing
complexity
of
flexible
sensor
application
scenarios,
in
order
to
achieve
their
use
electric
and
magnetic
fields,
this
paper
introduces
a
core‐shell
structure
with
Ni‐doped
cobalt
ferrites
as
core
barium
titanate
dielectric
layer,
filling
it
into
polymer
matrix
prepare
magneto‐dielectric
elastomer
composites.
Taking
advantages
design,
targets
including
establishment
multi‐functionalization
retention
fine
mechanical
properties
have
been
simultaneously
achieved.
The
synthesized
composites
exhibit
flexibility
excellent
magneto‐electric
response.
An
optimum
magnetic‐induced
deformation
angle
achieves
55°
under
an
external
field
8000
Oe,
maximum
electric‐induced
approaches
about
8.29%
applied
5
kV/mm.
Besides
that,
Ni‐doping,
magnetization
behaviors
composite
fillings
could
be
tuned,
resulting
controllable
response
rubber
This
work
provides
novel
way
design
multi‐functionalized
composites,
which
is
significant
for
exploring
multi‐mode
sensors.
Highlights
Magneto‐dielectric
elastomers
were
prepared
using
filling.
maintained
good
properties.
Язык: Английский
Amplifying Magneto-Mechanical Performance of Magnetorheological Elastomers through Surface Functionalization of Iron Nanoparticles
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 2, 2025
Challenges
posed
by
the
chemical
incompatibility
between
nanoparticles
and
polymer
matrices
hinder
widespread
use
of
nanocomposites
as
material
platform
for
many
innovations.
In
this
study,
we
demonstrate
effectiveness
a
versatile
approach
to
surface
functionalization
commercial
nanoparticles.
To
illustrate
importance
proper
functionalization,
process
was
used
functionalize
high-moment
iron
enhance
magneto-mechanical
performance
nanoparticle-based
magnetorheological
elastomers
(MREs).
We
successfully
grafted
off-the-shelf
with
poly(dimethylsiloxane)
(PDMS)
ligands,
then
them
fabricate
anisotropic
MREs
reduced
stiffness
improved
magnetic
properties
compared
fabricated
original
nonfunctionalized
particles.
Structural
analysis
revealed
regular
arrangement
agglomeration
within
elastomeric
matrix
when
functionalized
particles
were
used.
Mechanical
testing
showed
enhanced
deflection
bending
these
MREs.
Furthermore,
improvement
obtained
at
lower
effective
content
particle
elastomers.
Magnetic
characterization,
in
turn,
amplified
anisotropy
chain
ordering
inside
functionalized-particle
Our
findings
highlight
potential
improve
nanocomposites,
such
superior
mechanical
properties.
Язык: Английский