Journal of Applied Polymer Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 28, 2024
ABSTRACT
The
conventional
preformed
particle
gel
(PPG)
has
certain
problems
of
relatively
poor
strength
and
easy
shear
crushing
after
swelling
during
the
in‐depth
conformance
control
process
in
low‐permeability
fractured
reservoirs.
Herein,
a
novel
double‐network
PPG
(DN‐CPPG)
based
on
biopolymer
(hydroxypropyl
methylcellulose,
HPMC)
hydrophobic
association
(C
16
chain)
was
synthesized
using
radical
polymerization
approach.
chemical
structure,
microscopic
morphologies,
thermal
tolerance
were
first
characterized.
Then,
property,
dynamic
viscoelasticity,
yield
stress,
creep
recovery
ability
DN‐CPPG
systematically
investigated.
results
revealed
that
exhibited
an
average
diameter
(d
50
)
approximately
27.12
μm
considerable
stability.
Furthermore,
it
displayed
superior
viscoelastic
properties,
behavior
equilibrium
compared
to
PPG.
This
attributed
synergistic
effects
newly
developed
DN
association,
resulting
tightly
crosslinking
network
strong
strength.
In
addition,
excellent
mechanical
strength,
with
higher
stress
(278
kPa)
elongation
strain
(917%)
those
(140
kPa
666%)
strain–stress
sweep
experiments.
formulated
serves
as
promising
material
for
Advanced Healthcare Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 17, 2024
Abstract
The
rapid
advancements
in
artificial
intelligence,
micro‐nano
manufacturing,
and
flexible
electronics
technology
have
unleashed
unprecedented
innovation
opportunities
for
applying
sensors
healthcare,
wearable
devices,
human–computer
interaction.
human
body's
tactile
perception
involves
physical
parameters
such
as
pressure,
temperature,
humidity,
all
of
which
play
an
essential
role
maintaining
health.
Inspired
by
the
sensory
function
skin,
many
bionic
been
developed
to
simulate
skin's
various
stimuli
are
widely
applied
health
monitoring.
Given
urgent
requirements
sensing
performance
integration
field
devices
monitoring,
here
is
a
timely
overview
recent
advances
multi‐functional
It
covers
fundamental
components
categorizes
them
based
on
different
response
mechanisms,
including
resistive,
capacitive,
voltage,
other
types.
Specifically,
application
these
area
monitoring
highlighted.
Based
this,
extended
dual/triple‐mode
integrating
temperature
presented.
Finally,
challenges
discussed.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 23, 2025
Abstract
Current
hydrogel
strain
sensors
have
never
been
integrated
into
dynamic
organ‐on‐a‐chip
(OOC)
due
to
the
lack
of
sensitivity
in
aqueous
cell
culture
systems.
To
enhance
sensing
performance,
a
novel
sensor
is
presented
which
MXene
layer
coated
on
bottom
surface
pre‐stretched
anti‐swelling
substrate
di‐acrylated
Pluronic
F127
(F127‐DA)
and
chitosan
(CS)
for
isolation
from
top
surface.
The
fabricated
display
high
(gauge
factor
290.96),
wide
range
(0–100%),
repeatability.
demonstrate
its
application,
alveolar
epithelial
cells
are
cultivated
forming
barriers,
then
lung‐on‐a‐chip
(LOC)
This
system
can
sensitively
monitor
normal
physiological
breathing,
pathological
inflammation
stimulated
by
lipopolysaccharide
(LPS),
alleviated
through
drug
intervention.
ACS Nano,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 17, 2025
Cardiovascular
disease
(CAD)
is
a
major
global
public
health
issue,
with
mortality
rates
being
significantly
impacted
by
cold
temperatures.
Stable
and
reliable
electrocardiogram
(ECG)
monitoring
in
environments
crucial
for
early
detection
treatment
of
CAD.
However,
existing
skin
sensor
struggle
to
balance
freeze
resistance,
breathability,
flexibility,
conductivity
adhesion
at
Here,
we
introduce
solvent
cross-linking
strategy
an
situ
transfer
method
prepare
ultrathin
bioionic
gels,
featuring
freezing
point
below
-80
°C
thickness
only
12.6
μm.
The
strong
abundant
interactions
between
the
ionic
liquid
zwitterionic
polymer
effectively
suppress
low-temperature
crystallization,
forming
toughened
highly
adhesive
network
structure.
This
enables
formation
morphology,
which
can
be
seamlessly
transferred
onto
various
substrates.
Furthermore,
solvent-cross-linked
maintains
large
interpolymer
chain
spacing,
facilitating
rapid
ion
transport
pathways.
Even
subzero
temperatures,
gel
its
multifunctionality,
demonstrating
tissue-like
softness
(34.6
kPa),
high
(10.06
mS
cm-1),
excellent
stretchability
(360%),
transparency,
robust
strength
(175.3
kPa)
interfacial
toughness
(1146
J
m-2).
Integrated
into
flexible
wearable
device,
ensures
conformity,
user
comfort,
signal-to-noise
ECG
signal
acquisition.
Leveraging
artificial
neural
network,
system
analyzes
bradycardia
signals
achieves
96.88%
accuracy
arrhythmia
under
conditions.
gel-based
presents
promising
solution
CAD
diagnosis
prediction
extreme
environments.
Chemical Society Reviews,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Hydrogels
are
emerging
as
promising
candidates
for
brain–computer
interfaces.
This
review
highlights
the
current
advancements
in
implantable
hydrogel
electrodes
neural
signal
recording,
neuromodulation,
and
brain
disorder
treatment.
Nano Letters,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 15, 2025
In
this
work,
a
supertough,
self-healable,
and
extreme-environment-tolerable
liquid
metal
(LM)
composite
organohydrogel
was
fabricated
by
dispersing
LM
particles
(LMPs)
with
water-soluble
starch
(WS)
leveraging
multilevel
hydrogen-bonding
interactions.
Attributed
to
the
cooperation
of
strong
dual-hydrogen
bonds
weak
monohydrogen
bonds,
obtained
an
outstanding
tensile
strength
2.0
±
0.13
MPa
toughness
16.0
1.0
MJ
m–3,
as
well
desirable
self-healing
ability.
The
strain
sensor
has
high
gauge
factor
(GF)
15.08
along
large
detection
range
(0–1159%),
demonstrating
its
sensitivity.
It
successfully
applied
for
manipulator
gesture
in
harsh
environments,
showing
excellent
resolution
sensing
stability
wide
temperature
(−20
50
°C).
This
work
provides
new
avenue
preparing
multifunctional
gels,
great
promise
next-generation
wearable
electronics.
Luminescence,
Journal Year:
2025,
Volume and Issue:
40(3)
Published: March 1, 2025
ABSTRACT
In
recent
years,
with
the
rapid
development
of
flexible
electronics,
implantable
electronic
devices
have
received
increasing
attention,
and
they
provide
new
solutions
for
medical
diagnosis
treatment.
To
ensure
long‐term
stable
operation
in
internal
environment,
materials
conductivity,
flexibility,
biocompatibility,
other
properties
are
high
demand.
Hydrogels
polymers
three‐dimensional
network
structures
that
not
only
physical
chemical
similar
to
those
biological
tissues
but
can
be
also
modulated
by
introducing
functional
groups
regulate
adhesion,
self‐healing,
functions.
Therefore,
hydrogel‐based
bioelectronic
considered
a
candidate
direction
future
biomedical
field.
Here,
this
paper
reviews
research
progress
molecular
design
performance
modulation
functionalized
hydrogels
based
on
four
key
hydrogels:
toughness.
The
latest
use
device
applications
is
summarized
below.
Finally,
discussions
given
challenges
opportunities
devices.
