ACS Applied Polymer Materials,
Journal Year:
2024,
Volume and Issue:
6(22), P. 13497 - 13511
Published: Nov. 4, 2024
High
adhesion
between
the
sensor
and
skin
is
crucial
for
accurate
detection
of
signals
from
human
body
while
maintaining
mechanical
electrical
properties,
including
self-recovery
reliability.
However,
ensuring
all
these
properties
in
layer
simultaneously
challenging.
Without
conformal
contact
sensor,
real-time
monitoring
hampered
by
a
high
signal-to-noise
ratio.
In
this
review,
we
highlight
importance
healthcare
monitoring,
focusing
on
reduced
noise
absence
irritation
or
side
effects
long-term
usage.
The
types
characteristics
hydrogels
are
summarized,
detailing
significance
conductive
role
tough
with
robust
properties.
Various
layers
various
patterns
shapes
also
discussed
as
well
wet
dry
electrodes,
along
their
advantages
limitations.
Furthermore,
introducing
research
double-sided
skin-sensitive
hydrogel-based
adhesive
that
ensure
to
can
be
utilized
sensors,
review
aims
present
potential
advancements
sensors.
By
balancing
excellent
layers,
have
advance
related
biosensors.
Moreover,
due
sustained
adhesion,
they
expand
sensing
applications
into
emerging
biofields,
such
stress
detection,
which
has
been
challenging
measure.
Therefore,
introduces
wearable
layers.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 9, 2025
Abstract
Eutectogels
represent
promising
materials
for
technological
applications
due
to
their
excellent
ionic
conductivity,
thermal
and
electrochemical
stability,
nonvolatility.
Nonetheless,
most
existing
eutectogels
suffer
from
low
strength
toughness.
Herein,
a
strategy
broadly
alter
the
mechanical
properties
of
by
tuning
aggregation
states
polymer
chains
through
specific
hydrogen
bond
network
deep
eutectic
solvent
is
reported.
The
prepared
exhibit
exceptional
properties,
including
record‐breaking
toughness
(203.38
MJ
m
−3
)
(31.53
MPa),
outperforming
even
toughest
reported
surpassing
synthetic
polymers
such
as
PDMS,
rubber,
natural
spider
silk.
By
tailoring
solvent's
careful
selection
number
types
bonding
functional
groups,
can
be
precisely
tuned
across
wide
range.
Specifically,
tensile
adjusted
8.19
31.53
MPa,
69.84
203.38
,
modulus
3.38
13.01
MPa.
Given
diversity
solvents,
proposed
allows
rational
design
hydrogen‐bond
networks
further
optimize
eutectogels,
providing
versatile
approach
controlled
preparation
high‐strength,
tough
eutectogels.
ACS Sensors,
Journal Year:
2024,
Volume and Issue:
9(10), P. 5322 - 5332
Published: Oct. 15, 2024
Hydrogels
based
on
borate
ester
bonds
exhibit
remarkable
tensile
strength
and
self-healing
ability,
which
make
them
a
promising
material
for
various
biological
research
strain
sensor
applications.
However,
in
order
to
meet
the
practical
application
of
hydrogel
sensors,
they
must
also
show
high
conductivity,
frost
resistance,
proper
adhesion,
is
still
continuous
challenge.
Herein,
triple
network
was
prepared
using
poly(vinyl
alcohol)
(PVA)
as
first
network,
ethylene
imine
polymer
(PEI)
second
poly(acrylamide-
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 2, 2025
Abstract
Smart
hydrogels
with
multi‐fluorescent
properties
hold
great
promise
for
information
encryption.
However,
conventional
fluorescent
often
lack
adequate
mechanical
and
multiple
responsiveness,
limiting
their
range
of
applications.
In
this
study,
a
multifunctional
hydrogel
featuring
an
interpenetrating
polymer
network
(IPN)
composed
poly(vinyl
alcohol)
(PVA)
poly(acrylic
amide‐co‐2‐acrylamido‐2‐methylpropane
sulfonic
acid)
P(AM/AMPS)
chemical
cross‐linking
networks
is
designed.
Through
the
coordination
lanthanide
ions
(Eu
3+
,
Tb
)
glycine,
achieves
exceptional
stretchability
(over
900%)
adjustable
photoluminescence
properties.
Due
to
acid
groups
on
2‐acrylamide‐2‐methylpropanesulfonic
(AMPS),
which
support
various
noncovalent
interactions,
PVA‐P(AM/AMPS)‐Gly‐Ln
displays
strong
reversible
adhesive
diverse
substrates.
Ultimately,
assembled
into
multifunctional,
flexible
sensor,
boasting
satisfactory
sensitivity
(GF
=
5.3),
rapid
response
rate
(100
ms),
outstanding
characteristics,
highlighting
its
potential
applications
in
human
motion
detection
