Polymers,
Год журнала:
2025,
Номер
17(5), С. 585 - 585
Опубликована: Фев. 22, 2025
Flexible
and
wearable
electronics
often
rely
on
piezoelectric
materials,
Poly(vinylidene
fluoride-trifluoroethylene)
(P(VDF-TrFE))
membranes
are
popular
for
this
application.
However,
their
electromechanical
performance
is
limited
due
to
a
relatively
low
coefficient.
To
address
this,
study
investigates
the
incorporation
of
zinc
oxide
(ZnO)
nanorods
(NRs)
into
P(VDF-TrFE)
nanofiber
membrane
matrix.
ZnO
NRs
were
synthesized
doped
well-aligned
nanofibers
using
electrospinning
with
high-speed
rotating
drum.
The
impact
NRs’
mass
fraction
properties
was
evaluated.
Results
show
that
maximum
coefficient
(d33)
−62.4
pC/N,
9.5
times
higher
than
neat
P(VDF-TrFE),
achieved.
These
enhanced
demonstrated
excellent
in
finger-tapping
bending
detection,
making
them
promising
large-scale
flexible
sensor
applications
electronics.
This
approach
offers
simple
effective
route
improve
materials
devices.
Advanced Materials Technologies,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 15, 2025
Abstract
Gait
often
reveals
valuable
information
about
personal
movements
in
daily
life,
and
traditional
gait
monitoring
relies
on
inertial
sensors,
which
are
limited
by
high
manufacturing
costs,
inconvenient
operation,
complex
analysis
methods.
This
study
proposes
a
simple
cost‐effective
method
to
manufacture
wearable
capacitive
sensor,
can
efficiently
detect
different
signals.
The
sensor
is
made
polyurethane
sponge
with
deposited
activated
carbon
(C@PU
sponge)
as
the
dielectric
layer,
it
has
sensitivity
pretty
good
stability.
further
integrated
into
an
insole
for
detecting
collecting
signals
of
foot
pressure
during
human
movement.
To
overcome
limitations
methods,
convolutional
neural
network
model
based
residual
networks
designed
nine
activities
recognition
accuracy
98.15%.
Furthermore,
optimized
using
genetic
algorithm,
able
effectively
identify
eight
participants
98.75%.
These
results
indicate
that
smart
insoles
sensors
show
application
prospects
identity
recognition,
expected
be
widely
used
life
future.
Polymers,
Год журнала:
2025,
Номер
17(5), С. 585 - 585
Опубликована: Фев. 22, 2025
Flexible
and
wearable
electronics
often
rely
on
piezoelectric
materials,
Poly(vinylidene
fluoride-trifluoroethylene)
(P(VDF-TrFE))
membranes
are
popular
for
this
application.
However,
their
electromechanical
performance
is
limited
due
to
a
relatively
low
coefficient.
To
address
this,
study
investigates
the
incorporation
of
zinc
oxide
(ZnO)
nanorods
(NRs)
into
P(VDF-TrFE)
nanofiber
membrane
matrix.
ZnO
NRs
were
synthesized
doped
well-aligned
nanofibers
using
electrospinning
with
high-speed
rotating
drum.
The
impact
NRs’
mass
fraction
properties
was
evaluated.
Results
show
that
maximum
coefficient
(d33)
−62.4
pC/N,
9.5
times
higher
than
neat
P(VDF-TrFE),
achieved.
These
enhanced
demonstrated
excellent
in
finger-tapping
bending
detection,
making
them
promising
large-scale
flexible
sensor
applications
electronics.
This
approach
offers
simple
effective
route
improve
materials
devices.
