Macromolecular Rapid Communications,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 30, 2025
Abstract
Flexible
wearable
electronic
devices,
capable
of
real‐time
physiological
monitoring
for
personalized
health
management,
are
increasingly
recognized
their
convenience,
comfort,
and
customization
potential.
Despite
advancements,
challenges
persist
soft
electrodes
due
to
the
skin's
complex
surface,
biocompatibility
demands,
modulus
mismatch.
In
response,
a
mussel‐inspired
polydopamine‐nanoclay‐silk
fibroin
hydrogel
(DA‐C‐SFH)
is
introduced,
synthesized
via
two‐step
process.
The
initial
polydopamine
oxidation
introduces
free
catechol
groups
through
polydopamine‐incorporated
nanoclay,
followed
by
integration
with
silk
fibroin,
refining
network
at
mesoscopic
scale.
This
DA‐C‐SFH
exhibits
low
modulus,
high
elasticity,
adhesive
properties,
biocompatibility,
enabling
conformal
skin
adhesion.
It
effectively
detects
subtle
signals,
such
as
pulse
waves,
serves
epidermal
electrode,
recording
various
electrophysiological
including
electrocardiograms
electromyograms,
thus
underscoring
its
potential
in
medical
electronics
applications.
Abstract
Flexible
wearable
sensors
with
bimodal
functionality
offer
substantial
value
for
human
health
monitoring,
as
relying
on
a
single
indicator
is
insufficient
capturing
comprehensive
physiological
information.
However,
face
multiple
challenges
in
practical
applications,
including
mutual
interference
between
various
modalities,
and
integration
of
excellent
mechanical
properties,
interfacial
adhesion,
environmental
adaptability
biocompatibility.
Herein,
the
multifunctional
hydrogel,
synthesized
through
radical
grafting
supramolecular
self‐crosslinking
reactions,
exhibits
thermal
sensitivity
(TCR
=
−1.70%
°C
−1
),
high
toughness
(9.31
MJ
m
−
3
wide
strain
range
(0–600%),
outstanding
adhesion
strength
(36.07
kPa),
antifreeze,
visualization,
water
retention,
biocompatibility,
antibacterial
antioxidant
capabilities.
Leveraging
its
conductivity,
this
hydrogel
can
be
applied
electroluminescent,
triboelectricity,
electromyography
message
encryption.
Moreover,
fabricated
smart
temperature
monitoring.
To
avoid
two
signals,
system
“IS”‐shaped
configuration
innovatively
designed
based
finite
element
simulation
results.
The
flexible
circuit
modules,
data
transmission
form
closed‐loop
platform
rehabilitation
training
patients
arthritis
or
joint
surgery.
This
strategy
establishes
decoupling
self‐calibrating
utilizing
material
to
accurately
detect
parameters,
advancing
electronics
personalized
medicine.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 21, 2025
Abstract
Hydrogel‐based
electrodes
are
widely
used
in
electrophysiological
monitoring
for
personal
disease
prevention
and
home‐based
healthcare.
However,
limited
by
the
hydrogels’
low
toughness,
poor
adhesion,
weak
electrical
stability,
motion
artifacts
device
detachments
inevitable
after
long‐term,
continuous
monitoring.
Herein,
novel
liquid
metal@silk
fibroin
peptide
(LM@SF)
core‐shell
particles,
which
shell
SF
not
only
facilitates
core
LM's
dispersion
but
also
stabilizes
free
radicals,
designed
to
initiate
situ
formation
of
hydrogel
while
simultaneously
enhancing
its
conductivity.
As
applied
monitoring,
can
maintain
both
a
stable
physical
interface
transmission
skin,
thus
promoting
signal
acquisition
quality
obviously
even
during
exercise
long‐term
wearing.
At
last,
portable
flexible
patch
with
small
volume
(70
×
35
2
mm)
light
weight
(7
g)
is
developed
achieve
electrocardiogram
(ECG)
via
wireless
transmission,
demonstrating
high
potentials
telemedicine.
Advanced Materials,
Год журнала:
2024,
Номер
36(25)
Опубликована: Апрель 2, 2024
Stretchable
ionic
conductors
are
crucial
for
enabling
advanced
iontronic
devices
to
operate
under
diverse
deformation
conditions.
However,
when
employed
as
interconnects,
existing
struggle
maintain
stable
conduction
strain,
hindering
high-fidelity
signal
transmission.
Here,
it
is
shown
that
strain-insensitive
can
be
achieved
by
creating
a
solid-liquid
bicontinuous
microstructure.
A
fiber
from
polymerization-induced
phase
separation,
which
contains
solid
elastomer
interpenetrated
liquid
ion-conducting
phase,
fabricated.
The
spontaneous
partitioning
of
dissolved
salts
leads
the
formation
robust
self-wrinkled
interface,
fostering
development
highly
tortuous
channels.
Upon
stretch,
these
meandering
channels
straightened,
effectively
enhancing
conductivity
counteract
strain
effect.
Remarkably,
retains
till
fracture,
with
only
7%
resistance
increase
at
200%
strain.
This
approach
presents
promising
avenue
designing
durable
cables
capable
transmission
minimal
strain-induced
distortion.
Wearable electronics.,
Год журнала:
2024,
Номер
1, С. 53 - 77
Опубликована: Май 13, 2024
With
the
evolution
of
Industry
4.0,
next-generation
wearable
devices
have
come
under
spotlight,
where
organic
electronics
are
playing
an
important
role
due
to
their
flexible
form
factor,
high
performance,
and
integration
capability.
Designed
conform
soft
dynamic
surfaces,
photodetectors
(OPDs)
integrated
arrays
stand
out
for
application
potential
in
non-invasive
biosensing
bio-imaging,
with
inherent
advantages
mitigating
motion
artifacts
–
a
notable
limitation
traditional,
rigid
photodetector
systems.
Leveraging
near-infrared
(NIR)
spectrum's
capability
deep
skin
penetration
minimal
scattering
human
tissues,
NIR
OPDs
especially
capable
precise
diagnostics
enhanced
signal
quality.
The
adaptable
factor
further
broadens
applications
human-environment
interaction,
marking
shift
towards
more
responsive
intelligent
technologies.
This
review
summarizes
latest
challenges
breakthroughs
OPDs,
emphasizing
effective
strategies
toward
high-performance
device
units
We
discuss
remaining
outlook
on
vast
reshaping
our
interaction
surroundings.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 10, 2024
Abstract
The
preparation
of
high‐performance
and
fire‐safe
electrolytes
for
flexible
quasi‐solid‐state
supercapacitors
is
challenging.
In
this
work,
a
novel
multifunctional
deep
eutectic
solvent
gel
(DESG)
fabricated
using
acrylic
acid
urea
as
hydrogen
bond
donors
choline
chloride
acceptor.
DESG
shows
high
ionic
conductivity
(0.552
S
m
−1
),
good
electrochemical
performance
(specific
capacitance:
106.8
F
g
wide
operating
temperature
range
(−20–90
°C),
being
promising
candidate
solid‐state
supercapacitors.
Furthermore,
it
exhibits
thermoelectric
conversion
capability
(Seebeck
coefficient:
1.56
mV
K
ideal
capacitors
fire‐warning
sensors.
prepared
rapidly
self‐extinguishes
after
removal
from
fire,
reaching
limiting
oxygen
index
value
38.0%
demonstrating
its
excellent
flame
retardancy.
addition,
has
self‐healing
(healing
efficiency
84.3%).
work
provides
new
insights
into
the
application
fire‐safety
eutectogels
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 25, 2024
Abstract
Traditional
hydrogels
often
face
issues
like
dehydration,
excessive
swelling,
and
poor
adhesion,
limiting
their
practical
applications.
This
study
presents
a
facile
universal
method
to
create
elastomer‐encapsulated
with
improved
water
retention,
non‐swelling,
enhanced
adhesion.
n‐Butyl
acrylate
(BA)
2,2,3,4,4,4‐hexafluorobutyl
methacrylate
(HFBMA)
are
utilized
as
the
“soft”
“hard”
monomers,
respectively,
in
situ
construct
elastomer
coatings
on
hydrogel
surface
through
surface‐confined
copolymerization.
The
resulting
transparent,
hydrophobic,
adhesive
coating
is
tightly
bound
surface,
conferring
upon
it
robust
defense
against
dehydration
swelling
various
media,
strong
adhesion
diverse
substrates
both
aerial
submerged
conditions.
Furthermore,
this
encapsulation
strategy
also
augments
mechanical
attributes
of
bulk
hydrogel,
including
its
tensile
properties
puncture
resistance,
applicable
wide
array
types
configurations.
Additionally,
applied
conductive
results
flexible
sensors
high
sensitivity,
reversible
resistance
change,
exceptional
sensing
stability,
significantly
durability
air
underwater
environments.
These
suggest
potential
applications
harsh
environments,
such
acoustic
detection
sonar
scanning
camouflage
for
submarines.
National Science Review,
Год журнала:
2025,
Номер
12(4)
Опубликована: Фев. 27, 2025
ABSTRACT
Thermal-stiffening
hydrogels
exhibit
a
dramatic
soft-to-stiff
transition
upon
heating,
making
them
ideal
candidates
for
temperature-triggered
self-protection
and
shape
memory
applications.
However,
their
practical
use
is
still
hampered
by
slow
recovery
process
(generally
>30
min)
during
cooling,
attributed
to
sluggish
mass
diffusion
delayed
phase
dissolution.
Herein,
we
present
high-entropy
separation
design
significantly
accelerate
the
dynamics
of
these
materials.
We
demonstrate
this
concept
using
thermal-stiffening
poly(calcium
acrylate)-based
copolymer
hydrogel
incorporating
hydrophilic
units.
Mechanistically,
units
disrupt
dense
packing
clusters,
creating
topological
structure
with
low
energy
barrier
rapid
diffusion.
This
approach
retains
impressive
response
760-fold
increase
in
storage
modulus,
while
dramatically
reducing
characteristic
time
merely
28
s.
anticipate
strategy
be
broadly
applicable
designing
modulus-adaptive
materials
fast
switching
dynamics.
