ACS Applied Polymer Materials,
Год журнала:
2024,
Номер
6(20), С. 12808 - 12822
Опубликована: Окт. 12, 2024
Conductive
organogels
are
considered
ideal
materials
for
the
fabrication
of
flexible
wearable
electronic
devices.
However,
simultaneous
realization
epidermal
devices
with
excellent
self-healing,
self-adhesion,
multienvironment
tolerance,
and
superior
sensing
performance
remains
a
formidable
challenge.
In
this
study,
multiperformance
conductive
organogel
was
synthesized
via
one-step
photopolymerization
acrylic
acid
(AA)
acrylamide
(AAm)
in
an
H2O/glycerol
(Gly)
solution
comprising
gelatin
Al3+
ions,
utilizing
zinc
dimethacrylate
(ZDMA)
containing
Zn2+-carboxyl
coordination
bonds
as
ionic
cross-linker.
The
physical
cross-linked
gelatin/P(AA-co-AAm-co-ZDMA)/Al3+
formed
through
synergistic
effects
multiple
hydrogen
bonding,
dual
bonds,
entanglement
among
diverse
macromolecular
chains.
prepared
exhibited
toughness
(387
kPa),
significant
self-healing
ability
(633%
strain
healed
organogel),
prominent
moisture
retention
(weight
80%
after
15
days),
remarkable
long-term
temperature
resistance.
Without
sealed
packaging,
maintained
mechanical
properties
even
exposure
to
different
temperatures
(−30
°C,
20
50
°C)
durations
15,
7
days,
respectively.
sensor
based
on
sensitivity
(gauge
factor,
GF
=
3.36),
outstanding
signal
stability
(600
cycles
at
60%
strain),
precise
monitoring
underwater
motion.
wireless
heart
system
integrated
affixed
left
chest
volunteers
real-time
detection
minute
human
electrocardiograph
(ECG)
signals.
More
notably,
pronounced
alteration
transmittance
upon
water
glycerol,
rendering
it
suitable
application
reusable
writing
paper
recording
erasing
information.
multifunctional
exhibits
great
promise
development
future
electronics
enhanced
environmental
adaptability.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 28, 2025
Abstract
The
application
of
self‐healing
superhydrophobic
triboelectric
nanogenerators
(TENGs)
is
currently
limited
by
their
poor
wear
resistance,
which
stems
from
reliance
on
nano/microscale
hierarchical
structures.
Drawing
inspiration
corals,
this
study
presents
the
development
ultra‐wear‐resistant
TENGs
with
sub‐zero
temperature
capability
(USSS‐TENGs)
incorporating
rationally
designed
hydrophobic
polyurethane
(SFPU)
and
poly(vinylidene
fluoride)
nanoparticles
(PVDF
NPs)
into
iron
foams.
rigid
protruding
structures
foams
protect
incorporated
SFPU–PVDF
NPs
composites
preferentially
making
contact
bearing
stress
foreign
objects.
This
innovative
design
enables
USSS‐TENGs
to
maintain
superhydrophobicity
after
repeated
sandpaper
abrasion,
knife
scratching,
even
car
transit,
demonstrating
a
superior
resistance
compared
other
materials.
Furthermore,
driven
free
energy
minimization,
migration
SFPU
damaged
areas
self‐heal
at
−30
°C,
underwater,
in
vacuum.
Owing
outstanding
superhydrophobicity,
show
great
potential
as
smart
roofs
floor
tiles,
capable
providing
stable
durable
electricity
generation
processes
such
precipitation,
human
walking/jumping,
vehicle
movement.
has
not
been
previously
reported
for
TENGs,
irrespective
properties.
Abstract
Next‐generation
ionic
skin
(i‐skin)
should
be
self‐healing
and
self‐powered,
promoting
its
development
toward
lightweight,
miniaturization,
compact,
portable
designs.
Previously
reported
self‐powered
i‐skin
mostly
either
lack
the
ability
to
self‐repair
damaged
parts
or
only
have
capabilities
some
components,
falling
short
of
achieving
complete
device
self‐healability.
In
this
work,
a
self‐bonding
strategy
is
presented
obtain
an
all‐polymerizable
deep
eutectic
solvent
(PDES)
magnetoelectric
(MIS)
that
simultaneously
achieves
self‐powering
full‐device
autonomous
The
three‐layered
MIS
can
easily
restore
mechanical
electrochemical
performance
at
level
without
requiring
any
external
stimulus.
developed
configured
into
various
3D
architectures
with
highly
compatible
magnetic
conductive
offering
promising
potential
for
advancement
embodied
energy
technologies.
present
work
provides
versatile
user‐friendly
platform
producing
wide
range
intrinsic
multi‐layered
devices
made
from
soft
materials,
applications
extending
beyond
human‐machine
interfaces
artificial
intelligence.
Advanced Materials Technologies,
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 17, 2024
Abstract
Controlled
cross‐linking
of
polymer
dielectric
poly
(4‐vinylphenol)
(PVP)
is
demonstrated
as
an
effective
tool
in
enhancing
the
performance
flexible
organic
synaptic
transistors
(OSTs).
Investigation
variation
concentration
agent
methylated
(melamine‐co‐formaldehyde)
(PMCF)
PVP
bilayer
combination
with
high‐
k
hafnium
oxide
(HfO
2
)
gate
devices
shows
that
lower
results
better
memory
performance.
OSTs
26%
PMCF
(by
mass)
exhibit
excellent
window
>
4
V
for
GS
sweep
±5
V,
static
retention
≈10
s,
dynamic
500
cycles,
and
≈125
continuous
program/erase
cycles.
Pulse
paired
facilitation
relaxation
time
constants
370
4670
ms
respectively
slow
rapid
phases
regulating
modulation
amplitude
≈1
resemble
a
biological
synapse.
Through
excitatory
post
current
characteristics,
spike
timing
dependant
plasticity
voltage
are
clearly
observed,
low
energy
consumption
per
on
order
10
pJ.
Further,
by
leveraging
intricate
interconnected
data
transfer
computation
phenomenon,
“AND”
logic
effectively
implemented
using
these
OSTs.
These
exciting
may
open
up
new
directions
toward
development
hardware
neuromorphic
computing.
Micromachines,
Год журнала:
2024,
Номер
15(9), С. 1079 - 1079
Опубликована: Авг. 26, 2024
The
proliferation
of
small
electronic
devices
has
significantly
increased
the
demand
for
self-powered
sensors.
This
study
introduces
a
triboelectric
frequency
sensor
(TFS)
that
combines
frequency-responsive
characteristics
nanogenerators
with
simple
one-dimensional
structure
sustainable
vibration
measurement.
is
specifically
designed
to
aid
in
tuning
string
instruments,
capable
detecting
responses
up
330
Hz
generated
by
vibrations.
Structural
optimization
was
achieved
setting
non-contact
mode
gap
distance
3
mm
and
utilizing
perfluoroalkoxy
alkane
(PFA)
as
contact
dielectric
material.
TFS
exhibits
dynamic
response
varying
vibrating
tension
string,
facilitated
custom-built
testing
setup.
Frequency
data
captured
can
be
visualized
on
monitor
through
integration
microcontroller
unit
(MCU)
dedicated
coding.
practical
applicability
effectiveness
this
real-world
scenarios
are
demonstrated
experimentally.
innovation
represents
significant
step
forward
development
self-sustaining
sensing
technologies
precision
instrument
tuning.
