Journal of Polymer Science,
Journal Year:
2024,
Volume and Issue:
62(20), P. 4789 - 4800
Published: Aug. 5, 2024
Abstract
Piezoelectric
energy
harvesters
(PEHs)
developed
from
electrospun
polyvinylidene
fluoride
(PVDF)
fibers
offer
flexibility
and
superior
piezoelectric
output,
making
them
promising
for
self‐powered
systems
sensors.
Nonetheless,
the
electromechanical
conversion
efficiency
of
conventional
PVDF
is
impeded
by
their
limited
pressure‐strain
range.
Herein,
elastic
porous
microspheres
are
introduced
in‐situ
via
electrospinning
to
craft
a
membrane
with
higher
compressive
strain.
The
uniformly
embedded
between
in
sandwich
fashion,
dimension
easily
tunable
varying
spinning
solution's
concentration.
Moreover,
micropores
on
created
removing
pre‐mixed
SiO
2
template
not
only
elevates
β
crystal
content
82.19%,
but
also
improves
compressibility,
significantly
boosting
output.
microsphere
alloyed
PEH
delivers
output
33.0
V
power
density
8
μW/cm
,
over
5.8
times
that
membrane,
can
consistently
charge
lithium‐ion
batteries.
Our
research
unveils
novel
strategic
path
modify
fiber
structured
PEHs,
advancing
applications
systems.
Advanced Science,
Journal Year:
2024,
Volume and Issue:
11(24)
Published: March 13, 2024
Abstract
Anisotropic
pressure
sensors
are
gaining
increasing
attention
for
next‐generation
wearable
electronics
and
intelligent
infrastructure
owing
to
their
sensitivity
in
identifying
different
directional
forces.
3D
printing
technologies
have
unparalleled
advantages
the
design
of
anisotropic
with
customized
structures
realizing
tunable
anisotropy.
has
demonstrated
few
successes
utilizing
piezoelectric
nanocomposites
recognition.
However,
3D‐printed
piezoresistive
(PPSs)
remain
unexplored
despite
convenience
saving
poling
process.
This
study
pioneers
development
an
aqueous
printable
ink
containing
waterborne
polyurethane
elastomer.
An
PPS
featuring
tailorable
flexibility
macroscopic
microscopic
pore
morphologies
is
created
by
adopting
direct
writing
technology.
Consequently,
desired
force
perception
achieved
programming
schemes.
Notably,
printed
excellent
deformability,
a
relative
1.22
(kPa
*
wt.
%)−1
over
substantial
range
(2.8
8.1
kPa),
approximately
fivefold
than
that
state‐of‐the‐art
carbon‐based
PPS.
underscores
versatility
customizing
highly
sensitive
advanced
sensing
applications
difficult
achieve
using
conventional
measures.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 9, 2025
Abstract
The
synergistic
integration
of
elastic
porous
material
with
self‐powered
sensing
capabilities
holds
immense
promise
for
smart
wearable
devices.
However,
the
intrinsic
contradiction
between
elasticity
and
strength
has
hindered
mechanical
performance
materials.
This
research
reports
a
diffusion‐driven
layer‐by‐layer
assembly
strategy
to
enhance
As
prerequisite,
anisotropic
layered
structure
natural
materials
is
leveraged
endow
fundamental
elasticity.
Subsequently,
vacuum
chemically‐assisted
enhanced
solvent
diffusion
are
sequentially
employed
assemble
conductive
layers
on
cellulose
from
inside
out.
endows
triboelectric
(TM)
exceptional
properties
(elastic
strain
range
0–80%,
compressive
reaching
4.55
MPa).
Utilizing
TM
as
material,
sensor
response
time
48
ms
sensitivity
0.57
kPa
−1
constructed.
Moreover,
application
in
helmet
demonstrated,
enabling
remote
monitoring
traceability
head
impact
events.
overcome
incompatibility
high
offers
promising
avenues
their
utilization
Nano-Micro Letters,
Journal Year:
2024,
Volume and Issue:
17(1)
Published: Oct. 16, 2024
Monitoring
minuscule
mechanical
signals,
both
in
magnitude
and
direction,
is
imperative
many
application
scenarios,
e.g.,
structural
health
monitoring
robotic
sensing
systems.
However,
the
piezoelectric
sensor
struggles
to
satisfy
requirements
for
directional
recognition
due
limited
coefficient
matrix,
achieving
sensitivity
detecting
micrometer-scale
deformations
also
challenging.
Herein,
we
develop
a
vector
composed
of
lead
zirconate
titanate-electronic
grade
glass
fiber
composite
filaments
with
oriented
arrangement,
capable
minute
anisotropic
deformations.
The
as-prepared
can
identify
deformation
directions
even
when
subjected
an
unprecedented
nominal
strain
0.06%,
thereby
enabling
its
utility
accurately
discerning
5
μm-height
wrinkles
thin
films
human
pulse
waves.
ultra-high
attributed
formation
porous
ferroelectret
efficient
load
transfer
efficiency
continuous
titanate
phase.
Additionally,
integrated
machine
learning
techniques,
sensor's
capability
recognize
multi-signals
enables
it
differentiate
between
10
types
fine
textures
100%
accuracy.
design
devices
more
comprehensive
perception
stimuli,
offering
novel
perspective
enhancing
Polymer Composites,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 14, 2025
Abstract
Flexible
strain
sensors
have
undergone
significant
development
since
their
inception.
Currently,
most
are
typically
designed
to
detect
in
only
a
single
direction.
However,
as
sensor
application
scenarios
continue
expand,
challenges
can
arise
utilizing
these
uniaxial
applications
involving
multiple
directions.
In
this
work,
carbon
nanofiber
(CNF)/thermoplastic
polyurethane
(TPU)
nanocomposite
with
highly
aligned
and
porous
structure
is
fabricated
via
heat‐assisted
electrohydrodynamic
(EHD)
printing
technique,
where
high‐voltage
electric
field
applied
achieve
high‐resolution
filamentation
high
temperature
imparts
the
filament.
The
unique
architecture
of
promotes
formation
microcracks
under
along
alignment
direction,
leading
an
ultra‐high
sensitivity
750.
Under
transverse
on
contrary,
limited
12.8
obtained
because
external
effectively
shared
by
increased
spacing
filaments.
Based
exceptional
multidirectional
sensing
properties,
we
demonstrate
detecting
complex
motions
such
facial
muscle
finger
joint
movements.
current
work
provides
effective
strategy
for
fabrication
anisotropic
nanocomposites
precisely
controlled
multifunctional
properties.
Highlights
Highly
was
produced
EHD
printing.
High‐voltage
facilitate
filamentation.
High
utilized
impart
nanocomposite.
Large
disparity
achieved
orthogonal
capable
human
motions.
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 18, 2025
Abstract
3D
printing
has
revolutionized
the
development
of
flexible
pressure
sensors
by
enabling
precise
fabrication
diverse
microstructures
that
significantly
enhance
sensor
performance.
These
advancements
have
substantially
improved
key
attributes
such
as
sensitivity,
response
time,
and
durability,
facilitating
applications
in
wearable
electronics,
robotics,
human–machine
interfaces.
This
review
provides
a
comprehensive
analysis
sensing
mechanisms
these
sensors,
emphasizing
role
microstructures,
micro‐patterned,
microporous,
hierarchical
designs,
optimizing
The
advantages
techniques,
including
direct
indirect
methods,
creation
complex
with
high
precision
adaptability
are
highlighted.
Specific
applications,
human
physiological
signal
monitoring,
motion
detection,
soft
emerging
explored
to
demonstrate
versatility
sensors.
Additionally,
this
briefly
discusses
challenges,
material
compatibility,
optimization
difficulties,
environmental
stability,
well
trends,
integration
advanced
technologies,
innovative
multidimensional
promising
avenues
for
future
advancements.
By
summarizing
recent
progress
identifying
opportunities
innovation,
critical
insights
into
bridging
gap
between
research
real‐world
helping
accelerate
evolution
sophisticated
3D‐printed
microstructures.
Advanced Materials Technologies,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 26, 2025
Abstract
Flexible
pressure
sensors
hold
significant
potential
for
applications
in
health
monitoring,
human‐machine
interaction,
electronic
skin,
and
artificial
intelligence
due
to
their
high
sensitivity,
flexibility,
lightweight,
ease
of
signal
acquisition.
In
recent
years,
extensive
research
into
sensor
materials,
structures,
manufacturing
technologies
has
led
the
development
various
high‐performance
flexible
sensors.
Currently,
optimizing
sensing
performance
involves
selecting
appropriate
functional
designing
deformable
employing
high‐precision
techniques.
This
paper
reviews
advancements
sensors,
focusing
on
mechanisms,
microstructure
design,
technologies,
application
fields.
First,
mechanisms
operating
different
modes
are
introduced,
several
widely
used
materials
discussed.
Particular
attention
is
given
role
geometric
design
enhancing
performance.
Next,
influence
analyzed
summarized.
addition,
emerging
presented.
Finally,
concludes
by
highlighting
prospects
major
challenges
achieving
