Flexible multifunctional composite films for adjustable EMI shielding behavior under self-fixed deformation
Chemical Engineering Journal,
Год журнала:
2024,
Номер
500, С. 156896 - 156896
Опубликована: Окт. 24, 2024
Язык: Английский
Self‐Adhesive Gelatin/Slide‐Ring Double‐Network Hydrogel for Human Motion Sensing and Morse Code Communication
Small,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 14, 2025
Abstract
Hydrogels
emerge
as
highly
promising
candidates
for
wearable
electronics
due
to
their
moldability
and
biocompatibility.
However,
hydrogel‐based
often
suffer
from
poor
mechanical
properties
limited
adhesion,
pose
significant
challenges
practical
application.
Herein,
a
conductive,
stretchable,
self‐adhesive
gelatin/slide
ring
hydrogel
(SRH)
with
double‐network
(DN)
structure
is
developed
by
incorporating
polyrotaxane
(PR)
based
cross‐linker
in
the
gelatin
(GEL)
network.
The
water‐soluble
allylic
PR
(APR)
cross‐linkers
are
prepared
cyclodextrin‐based
via
simple
one‐step
method.
Additionally,
effect
of
APR
different
sliding
capabilities
on
SRH
further
investigated
aiming
optimize
performance.
optimized
achieves
balance
between
toughness
(2226
kJ
m
−3
)
rigidity
(154
kPa),
along
high
stretchability
(3048%)
strong
adhesion
various
substrate
materials.
More
importantly,
this
DN
demonstrated
human
motion
sensor
capable
Morse
code
communication.
This
work
not
only
advances
understanding
slidable
applications
but
also
paves
way
innovative
hydrogels
tailored
high‐performance
electronics,
broadening
scope
functionality
real‐world
use.
Язык: Английский
Self-Powered and Self-Healing Underwater Sensors with Functions of Intelligent Drowning Warning and Rescuing by Using a Nonswelling Hydrogel
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 22, 2025
Hydrogels
have
attracted
increasing
attention
in
wearable
sensors,
but
preparing
underwater
hydrogel
sensors
with
excellent
anti-swelling
and
self-healing
properties
is
still
challenging.
Herein,
an
prepared
by
grafting
poly(acrylic
acid)
hydrophobic
lauryl
methacrylate,
as
well
constructing
a
second
network
multiple
molecular
interactions
(abbreviated
PALCF).
The
introduced
long
alkyl
chains
the
increased
cross-linking
density
of
result
swelling
ratio
only
0.04%
after
immersion
water
for
15
days.
Due
to
abundant
metal
coordination
hydrogen
bonds,
PALCF
exhibits
high
tensile
stress
0.60
MPa
efficiency
reaching
96.0%
at
60
°C
2
min.
Based
on
piezoresistive
effect,
directly
used
strain
sensor
sensitivity
(GF
=
2.24)
control
vehicles
rescue
implementation.
Furthermore,
two
self-powered
triboelectric
nanogenerator
contact
non-contact
models
are
constructed
based
hydrogels
communication,
capable
sending
out
SOS
messages
drowning
alarms
emergency.
proposed
warning
rescuing
functions
potential
use
prevention,
human-machine
interfaces,
communication
system.
Язык: Английский
Cation-π Driven Innovative Gelatin-based Hydrogels with ultrahigh adhesion and Self-healing capabilities
Giant,
Год журнала:
2025,
Номер
unknown, С. 100361 - 100361
Опубликована: Май 1, 2025
Язык: Английский
Recent Advances in Stimuli‐Responsive Conductive Hydrogels for Smart Sensing and Actuation: Properties, Design Strategies, and Applications
Macromolecular Materials and Engineering,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 28, 2025
Abstract
Conductive
hydrogels
are
a
class
of
multifunctional
composites
constructed
by
introducing
conductive
components
into
three‐dimensional
polymer
network,
combining
the
high
water‐content,
stretchability,
and
biocompatibility
traditional
hydrogels.
In
recent
years,
researchers
have
developed
stimuli‐responsive
(SRCHs)
through
molecular
functionalization
design,
which
can
respond
to
external
stimuli
such
as
mechanical
stress,
temperature,
pH,
light,
electric
field,
etc.,
realize
electrical
signal
output
or
behavior
modulation,
so
satisfy
requirements
smart
devices
for
dynamic
sensing
active
response
materials.
Thanks
synergistic
effect
environmental
responsiveness
conductivity,
SRCHs
show
broad
application
prospect
in
actuation.
However,
due
complexity
environment,
it
is
still
difficult
utilize
materials
construct
sophisticated
devices.
This
paper
systematically
reviews
progress
material
design
actuation
applications
past
five
focuses
on
their
mechanisms
performance
optimization
strategies,
summarizes
current
challenges
future
development
directions,
with
view
providing
theoretical
references
technological
inspirations
next‐generation
Язык: Английский
Adhesion Strategy for Cross‐Linking AgNWs/MXene Janus Membrane: Stretchable and Self‐Healing Electromagnetic Shielding and Infrared Stealth Capabilities
Small,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 15, 2024
Developing
lightweight
polymer
shielding
membranes
with
additional
physicochemical
properties
is
of
great
significance
for
addressing
the
complex
contemporary
security
demands.
However,
precise
structural
design
at
molecular
level
remains
a
challenge.
Herein,
unique
Janus
composite
membrane
assembled
from
conductive
AgNWs/MXene
1D/2D
network
and
polyurethane
elastomer
(MPHEA),
displaying
combined
superior
electromagnetic
effectiveness
(EMSE)
up
to
80
dB
remarkable
infrared
stealth
capability
wide
temperature
range
room
50
°C.
Moreover,
endowed
chemical
crosslinking
in
resulted
exceptional
mechanical
strength,
self-healing,
adhesion.
The
maintained
(over
20
dB)
even
under
strain
40%
recovered
efficiency
90%
after
damage
self-healing
are
observed,
which
attributed
synergistic
3D
elastic
multi-dimensional
crosslinked
MPHEA@AgNWs/MXene
membrane.
This
work
has
represented
an
excellent
micro-nano
structure
strategy
on
multifunctional
wave
manager
application
scenario.
Язык: Английский