Heterogeneous layer-structured multiphase composite piezoelectret: Fabrication, piezoelectric performance, and application in electromechanical transduction
AIP Advances,
Год журнала:
2025,
Номер
15(4)
Опубликована: Апрель 1, 2025
Piezoelectrets
exhibit
large
piezoelectric
sensitivity
and
high
mechanical
flexibility,
widely
employed
in
sensors,
actuators,
energy
harvesters,
etc.
In
this
paper,
a
heterogeneous-structured
multiphase
composite
piezoelectret
(MPCP)
was
prepared
using
fluorinated
ethylene
propylene
copolymer
(Teflon
FEP,
50
μm
thickness),
polydimethylsiloxane
(PDMS),
polypropylene
(PP,
5.8
thickness)
films
via
corona
charging,
high-temperature
curing,
layer
stacking
techniques.
It
is
shown
that
the
d33
coefficient
of
MPCP
film
reaches
maximum
value
about
80
pC
N−1
when
surface
potential
FEP
1000
V
thickness
PDMS
μm.
The
remains
stable
during
two
months
storage
under
laboratory
conditions.
addition,
unchanged
over
22
000
cycles
with
sinusoidal
driving
force
at
frequency
2
Hz
an
amplitude
1
N.
found
strongly
dependent
on
applied
static
pressure
dynamic
pressure.
absence
macroscopic
air-filled
cavities
renders
it
excellent
stability
respect
to
varying
environmental
pressure,
largely
broadening
its
application
scenarios.
Due
stability,
sensing
developed
here
shows
promising
for
applications
fields
such
as
flexible
health
monitoring,
human–computer
interfaces,
Язык: Английский
Self-powered highly stretchable ferroelectret nanogenerator towards intelligent sports
Nano Trends,
Год журнала:
2024,
Номер
unknown, С. 100053 - 100053
Опубликована: Сен. 1, 2024
Язык: Английский
Piezoelectret-Based Dual-Mode Flexible Pressure Sensor for Accurate Wrist Pulse Signal Acquisition in Health Monitoring
Опубликована: Янв. 1, 2024
Язык: Английский
Piezoelectret-based dual-mode flexible pressure sensor for accurate wrist pulse signal acquisition in health monitoring
Measurement,
Год журнала:
2024,
Номер
unknown, С. 116283 - 116283
Опубликована: Ноя. 1, 2024
Язык: Английский
Two-dimensional materials van der Waals assembly enabling scalable smart textiles
Materials Science and Engineering R Reports,
Год журнала:
2024,
Номер
163, С. 100915 - 100915
Опубликована: Дек. 8, 2024
Язык: Английский
Piezoelectret metamaterials with a double-V structure exhibiting tunable piezoelectric effect in a broad range
Journal of Applied Physics,
Год журнала:
2024,
Номер
136(23)
Опубликована: Дек. 18, 2024
Piezoelectret
metamaterials
are
a
kind
of
piezoelectrets
with
distinctive
properties
such
as
negative
Poisson's
ratio
and
positive
piezoelectric
d31
coefficient.
These
materials
hold
significant
promise
for
applications
in
sensing
mechanical
energy
harvesting.
In
this
article,
flexible
piezoelectret
simple
double-V
cell
structure
designed,
their
theoretically
analyzed,
simulated,
experimentally
tested.
The
results
indicate
that
the
effective
d33
coefficients
can
be
tuned
over
wide
range
by
adjusting
geometric
parameters
cell.
experimental
consistent
theoretical
prediction
simulation
calculation.
Differing
from
coefficient,
which
always
has
polarity,
sign
coefficient
depends
on
material.
particular,
ratio,
while
they
have
when
is
negative.
For
metamaterial
sample
prepared
study,
large
up
to
1200
pC/N
achieved
experimentally.
effects
well
excellent
adaptivity
irregular
surface
structures,
curved
surfaces
humanoid
robots
aircraft
wings,
introduce
novel
solution
diverse
applications.
Язык: Английский
Ultralow k covalent organic frameworks enabling high fidelity signal transmission and high temperature electromechanical sensing
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Дек. 30, 2024
As
integrated
circuits
have
developed
towards
the
direction
of
complexity
and
miniaturization,
there
is
an
urgent
need
for
low
dielectric
constant
materials
to
effectively
realize
high-fidelity
signal
transmission.
However,
remains
a
challenge
achieve
ultralow
loss
over
wide
temperature
range,
not
mention
having
excellent
thermal
conductivity
processability
concurrently.
We
herein
prepare
dual-linker
freestanding
covalent
organic
framework
films
with
tailorable
fluorine
content
via
interfacial
polymerization.
The
possesses
(1.25
at
1
kHz,
≈1.2
6
G
band),
(0.0015
kHz)
0.48
Wm
Язык: Английский