ACS Sensors,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 20, 2025
Flexible
devices
assembled
with
low-surface-energy
PDMS
substrates
often
face
challenges,
such
as
poor
interfacial
adhesion
among
multilayer
films
and
mismatched
mechanical
moduli,
complicating
the
development
of
stable
repeatable
pressure
sensors.
Herein,
a
internal
dynamic
cross-linking
ability
is
synthesized
to
alleviate
these
issues,
which
shows
good
tensile
properties,
flexibility,
self-healing
at
room
temperature.
Taking
advantage
material
homogeneity,
electrodes
sensing
layer
sensor
made
composite
ink
PDMS,
serving
additive,
have
strong
peeling
resistance
adhesion.
Furthermore,
microconvex
structures
formed
by
pressing
microstructural
template
effectively
improves
sensitivity
range
sensor.
This
flexible
can
be
applied
in
medical
health
monitoring,
classifying
symptoms
related
sleep
apnea-hypopnea
syndrome
through
machine
learning.
The
constructed
neural
network
accurately
learns
conditions,
including
normal
sleep,
tachycardia,
apnea,
talking,
snoring,
rapid
eye
movement.
Utilizing
homogeneity
materials,
this
design
aims
improve
stability
devices,
expanding
their
application
potential
for
long-term
reliable
use.
Nano-Micro Letters,
Journal Year:
2023,
Volume and Issue:
15(1)
Published: May 11, 2023
With
the
rapid
development
of
Internet
Things
and
flexible
electronic
technologies,
there
is
a
growing
demand
for
wireless,
sustainable,
multifunctional,
independently
operating
self-powered
wearable
devices.
Nevertheless,
structural
flexibility,
long
time,
wearing
comfort
have
become
key
requirements
widespread
adoption
electronics.
Triboelectric
nanogenerators
as
distributed
energy
harvesting
technology
great
potential
application
in
sensing.
Compared
with
rigid
electronics,
cellulosic
electronics
significant
advantages
terms
breathability,
functionality.
In
this
paper,
research
progress
advanced
triboelectric
materials
reviewed.
The
interfacial
characteristics
cellulose
are
introduced
from
top-down,
bottom-up,
composite
material
preparation
process.
Meanwhile,
modulation
strategies
properties
presented.
Furthermore,
design
such
surface
functionalization,
structure
design,
vacuum-assisted
self-assembly
systematically
discussed.
particular,
fields
human
harvesting,
tactile
sensing,
health
monitoring,
human-machine
interaction,
intelligent
fire
warning
outlined
detail.
Finally,
current
challenges
future
directions
Energy & Environmental Science,
Journal Year:
2023,
Volume and Issue:
16(9), P. 3932 - 3941
Published: Jan. 1, 2023
Here,
we
propose
a
contact-sliding-separation
mode
TENG
(CSS-TENG)
that
couples
the
vertical
contact-separation
and
lateral
sliding
mode.
The
CSS-TENG
demonstrates
exceptional
charge
generation
capability
remarkably
low
surface
wear.
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
34(11)
Published: Dec. 3, 2023
Abstract
The
cracks
in
flexible
triboelectric
nanogenerators
(TENG)
cannot
naturally
repair
themselves
during
low‐temperature
operation,
which
significantly
restricts
their
practical
applications.
Yet,
the
development
of
elastomers
capable
self‐repair
at
low
temperatures
has
remained
a
formidable
challenge.
In
this
study,
dual
dynamic
cross‐linking
network
using
multiple
hydrogen
bonds
and
β
‐hydroxy
esters
is
constructed
to
fabricate
fully
bio‐based
elastomer
known
as
PLMBE.
This
can
be
stretched
up
an
impressive
1200%
its
original
length
possesses
remarkable
autonomous
self‐healing
capability
even
under
harsh
conditions,
including
(−10
°C,
12
h,
with
75%
efficiency
rate)
exposure
supercooled,
high‐concentration
saline
(10%
NaCl
solution
−10
64%
rate).
These
properties
are
attributed
elastomer's
glass
transition
temperature
(Tg)
−30
°C
abundance
hydrogen‐bonded
supramolecular
interactions.
Importantly,
highly
suitable
layer
for
creating
TENG
(Bio‐TENG)
.
results
demonstrate
that
Bio‐TENG
achieve
output
power
density
2.4
W
m
−2
,
voltage
recovers
95%
after
°C.
Consequently,
these
have
promising
applications
various
fields,
energy
storage
devices.
Sensors,
Journal Year:
2024,
Volume and Issue:
24(4), P. 1069 - 1069
Published: Feb. 6, 2024
In
recent
years,
portable
and
wearable
personal
electronic
devices
have
rapidly
developed
with
increasing
mass
production
rising
energy
consumption,
creating
an
crisis.
Using
batteries
supercapacitors
limited
lifespans
environmental
hazards
drives
the
need
to
find
new,
environmentally
friendly,
renewable
sources.
One
idea
is
harness
of
human
motion
convert
it
into
electrical
using
harvesting
devices—piezoelectric
nanogenerators
(PENGs),
triboelectric
(TENGs)
hybrids.
They
are
characterized
by
a
wide
variety
features,
such
as
lightness,
flexibility,
low
cost,
richness
materials,
many
more.
These
offer
opportunity
use
new
technologies
IoT,
AI
or
HMI
create
smart
self-powered
sensors,
actuators,
implantable/wearable
devices.
This
review
focuses
on
examples
PENGs,
TENGs
hybrid
for
implantable
systems.
The
basic
mechanisms
operation,
micro/nano-scale
material
selection
manufacturing
processes
selected
discussed.
Current
challenges
outlook
future
also
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(19)
Published: Jan. 17, 2024
Abstract
Developing
energy
harvesting
devices
is
crucial
to
mitigate
the
dependence
on
conventional
and
rigid
batteries
in
wearable
electronics,
ensuring
their
autonomous
operation.
Nanogenerators
offer
a
cost‐effective
solution
for
enabling
continuous
operation
of
electronics.
Herein,
this
study
proposes
novel
strategy
that
combines
freeze‐casting,
freeze‐drying,
printing
technologies
fabricate
fully
printed
triboelectric
nanogenerator
(TENG)
based
polyvinylidene
fluorid‐etrifluoroethylene
P(VDF‐TrFE)
porous
aerogel.
First,
effects
porosity
poling
stretchability
capabilities
are
investigated,
conducting
comprehensive
analysis
structure's
impact
mechanical,
ferroelectric,
properties
compared
solid
films.
The
results
demonstrate
structural
modification
significantly
enhances
increasing
it
from
7.7%
(solid)
66.4%
(porous).
This
output
voltage
by
66%
generated
charges
48%
non‐poled
aerogel
films
counterparts.
Then,
TENG
demonstrated
using
stretchable
materials,
exhibiting
peak
power
62.8
mW
m
−2
an
average
9.9
over
100
tapping
cycles
at
0.75
Hz.
It
can
illuminate
light‐emitting
diodes
(LEDs)
through
mechanical
human
motion.
provides
significant
advance
development
devices.
