Macromolecular Materials and Engineering,
Journal Year:
2024,
Volume and Issue:
309(5)
Published: Feb. 22, 2024
Abstract
Flexible
wearable
sensors
have
the
characteristics
of
flexibility,
comfort,
and
wearability,
shown
great
potential
in
future
electronic
products.
Despite
significant
efforts
developing
stretchable
materials
structures,
development
flexible
strain
with
a
wide
temperature
range,
high
sensitivity,
broad
detection
good
interface
stability
remains
challenging.
Here,
buckled
structures
are
fabricated
using
low‐temperature
resistant
material
Ti
3
C
2
T
x
MXene/graphene,
PDMS
184.
The
conductive
MXene/graphene
exhibits
excellent
interaction
184,
addressing
not
only
poor
compatibility
issue
between
substrate,
but
also
demonstrating
cycling
performance.
Buckled
structure
improves
stretchability
linearity
sensors.
sensor
is
suitable
for
range
(−40
to
120
°C)
(120%
strain).
demonstrates
rapid
response
times
at
different
temperatures:
−40
(72.6
ms),
0
(62.7
°C
(52.7
ms).
sensitivity
(GF
=
0.38),
0.24),
40
0.66),
1.47).
has
(0.1%
120%)
stability.
In
addition,
can
accurately
capture
various
human
activities,
such
as
blinking,
speaking,
finger
bending,
wrist
bending.
Journal of Materials Chemistry B,
Journal Year:
2024,
Volume and Issue:
12(25), P. 6190 - 6202
Published: Jan. 1, 2024
Metal
organic
frameworks
(MOFs)
have
garnered
significant
attention
in
the
development
of
stretchable
and
wearable
conductive
hydrogels
for
flexible
transducers.
However,
MOFs
used
hydrogel
networks
been
hampered
by
low
mechanical
performance
poor
dispersibility
aqueous
solutions,
which
affect
hydrogels,
including
toughness,
limited
self-recovery,
short
working
ranges,
conductivity,
prolonged
response-recovery
times.
To
address
these
shortcomings,
a
novel
approach
was
adopted
micelle
co-polymerization
Langmuir,
Journal Year:
2024,
Volume and Issue:
40(10), P. 5288 - 5296
Published: Feb. 28, 2024
A
kind
of
ionic
conductive
gel
(also
named
eutectogel)
is
developed
from
an
inorganic
salt
(ZnCl2)-based
deep
eutectic
solvent
(DES).
The
ternary
DES
consists
ZnCl2,
acrylic
acid,
and
water,
cotton
linter
cellulose
introduced
into
the
system
to
tailor
its
mechanical
properties.
Enabled
by
extensive
hydrogen
bonds
ion–dipole
interactions,
obtained
eutectogel
displays
superior
conductivity
(0.33
S/m),
high
stretchability
(up
2050%),
large
tensile
strength
(1.82
MPa),
wide
temperature
tolerance
(−40
60
°C).
In
particular,
water-induced
coordination
interactions
can
tune
hydrogen/ionic
in
eutectogels,
imparting
them
with
appealing
humidity
sensing
ability
complex
extreme
conditions.
Chemistry of Materials,
Journal Year:
2023,
Volume and Issue:
35(24), P. 10316 - 10347
Published: Dec. 11, 2023
Hydrogel-based
flexible
electronics
have
attracted
great
attention
due
to
their
excellent
mechanical
properties,
high
conductivity,
sensitivity
electric
signals,
etc.
Yet
it
is
extremely
challenging
create
a
freeze-resistant
hydrogel
for
desired
signal
stability
inevitable
water
crystallization
at
low
temperature.
Inspired
by
the
inherent
freezing
tolerance
of
many
biological
organisms,
researchers
devoted
extensive
efforts
developing
advanced
materials
with
freeze-tolerant
attributes
and
made
considerable
progress.
Herein,
we
present
comprehensive
analysis
cutting-edge
developments
in
hydrogels,
underpinned
insights
from
nature
frontiers
material
engineering.
We
commence
delineating
intrinsic
freeze-tolerance
mechanisms
organisms
adapted
frigid
environments.
Following
this,
collate
engineering
methodologies
tailored
develop
antifreeze
hydrogels.
Subsequent
sections
illuminate
pioneering
strides
applying
these
diverse
technological
arenas,
including
sensors,
smart
actuators
robotics,
energy
storage
devices,
harvesters.
Finally,
perspectives
on
future
challenges
avenues
steering
accelerated
evolution
such
bioinspired
are
discussed.
This
review
sheds
light
innovation
structural
design
freeze
resistant
anticipating
facilitation
operation
adaptation
soft
electronic
devices
extreme
