ACS Applied Polymer Materials,
Journal Year:
2023,
Volume and Issue:
6(1), P. 806 - 816
Published: Dec. 19, 2023
Hydrogel-based
sensors
have
attracted
increasing
attention
as
fascinating
materials
for
various
applications
in
biomedicine
and
bioelectronics.
However,
the
application
of
strain
underwater
remains
a
great
challenge
due
to
swelling
hydrogels
an
aqueous
environment.
Herein,
we
report
coacervate
conductive
polyacrylamide/tannic
acid
(PAM/TA)
composite
hydrogel
with
strong
antiswellable
properties.
The
PAM/TA
exhibits
good
electrical
performance,
where
conductivity
is
found
be
2.7
×
10–4
S/cm,
which
stable
during
recycling,
excellent
stretchability
1000%
at
tensile
strength
1.5
MPa.
shows
biocompatibility
behavior
maintains
long-term
stability
monitor
human
movements.
In
addition,
environmentally
friendly
can
recycled
repeatedly.
antiswelling
stability,
remarkable
has
potential
wearable
sensors.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(31)
Published: March 29, 2024
Wearable
epidermic
electronics
assembled
from
conductive
hydrogels
are
attracting
various
research
attention
for
their
seamless
integration
with
human
body
conformally
real-time
health
monitoring,
clinical
diagnostics
and
medical
treatment,
human-interactive
sensing.
Nevertheless,
it
remains
a
tremendous
challenge
to
simultaneously
achieve
bioadhesive
remarkable
self-adhesiveness,
reliable
ultraviolet
(UV)
protection
ability,
admirable
sensing
performance
high-fidelity
epidermal
electrophysiological
signals
along
timely
photothermal
therapeutic
performances
after
diagnostic
sensing,
as
well
efficient
antibacterial
activity
hemostatic
effect
potential
therapy.
Herein,
hydrogel-based
sensor,
featuring
superior
self-adhesiveness
excellent
UV-protection
performance,
is
developed
by
dexterously
assembling
conducting
MXene
nanosheets
network
biological
hydrogel
polymer
stably
attaching
onto
skin
high-quality
recording
of
high
signal-to-noise
ratios
(SNR)
low
interfacial
impedance
intelligent
diagnosis
smart
human-machine
interface.
Moreover,
sign
language
gesture
recognition
platform
based
on
collected
electromyogram
(EMG)
designed
hassle-free
communication
hearing-impaired
people
the
help
advanced
machine
learning
algorithms.
Meanwhile,
possesses
capability,
biocompatibility,
effective
hemostasis
properties
promising
bacterial-infected
wound
bleeding.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: May 2, 2024
Abstract
The
development
of
multifunctional
bio‐adhesive
plays
a
critical
role
in
achieving
sustainable
society,
where
the
intrinsic
sensitivity
to
water
and
poor
dynamics
severely
bottlenecks
its
scale‐up
application.
Inspired
by
microstructure
dragonfly
wings,
strong
tough
adhesive
with
excellent
reprocessability
is
designed
developed
creating
dynamic
network
consisting
lignin
polyurea
(LPU)
framework
soybean
protein
(SP).
LPU
act
as
rigid
nervures
slow
crack
propagation
transfer
stress,
while
SP
dissipate
strain
energy
through
interplay
from
graded
hydrogen
imine
bonds
generated
between
SP.
achieves
significant
enhancements
fracture
toughness
resistance
≈7
23
folds,
respectively,
compared
Furthermore,
capacity
for
diffusion
restoration
endows
superior
reprocessability,
enabling
recycled
particleboard
achieve
high
retention
modules
(over
80%).
This
approach
offers
promising
eco‐friendly
alternative
conventional
petrochemical
adhesive.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(21)
Published: Feb. 13, 2024
Abstract
With
the
continuously
growing
demand
for
wide‐range
applications,
lithium‐ion
batteries
(LIBs)
are
increasingly
required
to
work
under
conditions
that
deviate
from
room
temperature
(RT).
However,
commercial
electrolytes
exhibit
low
thermal
stability
at
high
temperatures
(HT)
and
poor
dynamic
properties
(LT),
hindering
operation
of
LIBs
extreme
conditions.
The
bottleneck
restricting
practical
applications
has
promoted
researchers
pay
more
attention
developing
a
series
innovative
electrolytes.
This
review
primarily
covers
design
adaptability
perspective.
First,
fundamentals
concerning
temperature,
including
donor
number
(DN),
dielectric
constant,
viscosity,
conductivity,
ionic
transport,
theoretical
calculations
elaborated.
Second,
prototypical
examples,
such
as
lithium
salts,
solvent
structures,
additives,
interfacial
layers
in
both
liquid
solid
electrolytes,
presented
explain
how
these
factors
can
affect
electrochemical
behavior
or
temperatures.
Meanwhile,
principles
limitations
electrolyte
discussed
corresponding
Finally,
summary
outlook
regarding
extend
proposed.
Advanced Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 28, 2025
Abstract
Ionic
conductive
hydrogels
(ICHs)
are
emerging
as
key
materials
for
advanced
human‐machine
interactions
and
health
monitoring
systems
due
to
their
unique
combination
of
flexibility,
biocompatibility,
electrical
conductivity.
However,
a
major
challenge
remains
in
developing
ICHs
that
simultaneously
exhibit
high
ionic
conductivity,
self‐healing,
strong
adhesion,
particularly
under
extreme
low‐temperature
conditions.
In
this
study,
novel
ICH
composed
sulfobetaine
methacrylate,
methacrylic
acid,
TEMPO‐oxidized
cellulose
nanofibers,
sodium
alginate,
lithium
chloride
is
presented.
The
hydrogel
designed
with
hydrogen‐bonded
chemically
crosslinked
network,
achieving
excellent
conductivity
(0.49
±
0.05
S
m
−1
),
adhesion
(36.73
2.28
kPa),
self‐healing
capacity
even
at
−80
°C.
Furthermore,
the
maintain
functionality
over
45
days,
showcasing
outstanding
anti‐freezing
properties.
This
material
demonstrates
significant
potential
non‐invasive,
continuous
monitoring,
adhering
conformally
skin
without
signal
crosstalk,
enabling
real‐time,
high‐fidelity
transmission
cryogenic
These
offer
transformative
next
generation
multimodal
sensors,
broadening
application
possibilities
harsh
environments,
including
weather
outer
space.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 6, 2025
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.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2023,
Volume and Issue:
11(28), P. 10578 - 10589
Published: July 6, 2023
Conductive
hydrogels
have
become
one
of
the
hot
topics
in
flexible
strain
sensors
owing
to
excellent
biocompatibility,
attractive
mechanical
flexibilities,
and
conductive
properties.
However,
time-consuming
preparation
their
unsuitable
properties
limit
application
low-temperature
environment
high
temperatures.
Here,
a
new
class
"deep
eutectic
solvent-in-water"
(DIWHs)
is
reported
for
first
time
through
one-step
gelation
process
situ
without
solvent
displacement,
fabricated
by
combining
hydrogel
with
deep
(DES).
The
DIWH
constructed
using
dynamic
oxidation
coordination
system
composed
sodium
lignosulfonate
(Ls)
Fe3+.
effect
DES
optimal
mass
ratio
water
on
was
synthetically
investigated.
addition
not
only
shortens
polymerization
8
s
enhances
but
also
provides
some
unique
For
example,
gives
gels
greater
self-healing
ability
antibacterial
When
1:3,
antifreezing
antidrying
were
imparted
gel,
elasticity
maintained
even
at
−80
°C
or
stored
60
7
days.
Furthermore,
exhibited
strong
interfacial
adhesion
natural
synthetic
materials
(up
kPa
glass)
due
presence
Ls
catechol
structure.
In
conclusion,
this
work
stimulates
more
interest
sustainable
high-value
utilization
fully
demonstrates
advantages
easy-to-prepare
coacervation
gel
sensing.
