Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
33(50)
Published: Sept. 3, 2023
Abstract
In
recent
years,
significant
progress
has
been
made
in
the
research
and
development
of
conventional
hydrogel
sensors.
However,
hydrogels
with
special
structures,
achieved
through
specific
designs
or
fabrication
strategies,
remains
relatively
scarce.
Inspired
by
aloe,
a
specially
structured
(named
Skin‐Polyvinyl
alcohol‐Polyaniline‐AgNWs,
S‐PPA)
is
successfully
prepared
skin.
Innovatively
utilizing
hydrogen
bonding
interaction
between
ions
water
molecules,
surface
treated
to
create
protective
The
S‐PPA
skin
demonstrates
strong
resistance
damage
(with
tensile
strength
5
MPa,
>11
times
higher
compared
without
skin)
exhibits
dual
conductivity
(0.8
S
m
−1
for
inner
0.33
outer
skin).
addition,
also
possesses
retention
capabilities,
antibacterial
properties
(89.4%
inhibition
rate
against
Staphylococcus
aureus
(
S.
)),
minimal
corrosion
metal
electrodes.
Based
on
combined
wireless
Bluetooth
technology
Python
programming,
intelligent
applications
are
developed
such
as
multi‐gradient
control
finger
muscle
condition
evaluation,
achieving
real‐time
human‐
computer
(HCI).
pressure‐sensitive
proposed
this
study
shows
great
potential
fields
medical
rehabilitation,
artificial
intelligence,
Internet
Things.
Small,
Journal Year:
2024,
Volume and Issue:
20(24)
Published: Jan. 2, 2024
Abstract
Conductive
hydrogels
have
emerged
as
ideal
candidate
materials
for
strain
sensors
due
to
their
signal
transduction
capability
and
tissue‐like
flexibility,
resembling
human
tissues.
However,
the
presence
of
water
molecules,
can
experience
dehydration
low‐temperature
freezing,
which
greatly
limits
application
scope
sensors.
In
this
study,
an
ionic
co‐hybrid
hydrogel
called
PBLL
is
proposed,
utilizes
amphoteric
ion
betaine
hydrochloride
(BH)
in
conjunction
with
hydrated
lithium
chloride
(LiCl)
thereby
achieving
function
humidity
adaptive.
retains
at
low
(<50%)
absorbs
from
air
high
(>50%)
over
17
days
testing.
Remarkably,
also
exhibits
strong
anti‐freezing
properties
(−80
°C),
conductivity
(8.18
S
m
−1
room
temperature,
1.9
−80
gauge
factor
(GF
approaching
5.1).
Additionally,
exhibit
inhibitory
effects
against
Escherichia
coli
(E.
coli)
Staphylococcus
aureus
(S.
aureus),
well
biocompatibility.
By
synergistically
integrating
wireless
transmission
Internet
Things
(IoT)
technologies,
study
has
accomplished
real‐time
human‐computer
interaction
systems
sports
training
rehabilitation
evaluation.
significant
potential
fields
medical
rehabilitation,
artificial
intelligence
(AI),
(IoT).
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(2), P. 2814 - 2824
Published: Jan. 5, 2024
High-performance
flexible
strain
sensors
have
tremendous
potential
applications
in
wearable
devices
and
health
monitoring.
However,
developing
a
sensor
with
high
sensitivity
over
wide
range
remains
significant
challenge.
In
this
study,
fibrous
membrane
porous
crimped
structure
was
designed
as
the
substrate
material
for
TPU/GNPs
sensors.
This
structural
design
effectively
balances
range.
The
TPU-PEO
prepared
using
electrospinning
water
washing,
resulted
TPU
framework.
Subsequently,
subjected
to
anhydrous
ethanol
stimulation
obtain
network
structure.
GNPs
were
modified
on
through
ultrasonic
treatment.
produced
exhibited
(GF
=
4047.5)
within
large
(350%)
demonstrated
excellent
sensing
performance,
stability,
durability
(>10,000
cycles).
It
not
only
captured
basic
movements
but
also
efficiently
recognized
measured
bending
angles,
enabling
more
sophisticated
human–machine
interaction
experience.
advancement
opens
up
possibilities
future
intelligent
technology
interaction,
contributing
evolution
of
these
fields.
Materials Horizons,
Journal Year:
2024,
Volume and Issue:
11(9), P. 2191 - 2205
Published: Jan. 1, 2024
A
healing
liquid-free
polyurethane-based
ionic
conductive
elastomer
(SS
50
DA
–LiTFSI
80%
)
with
high
mechanical
properties
and
conductivity
was
synthesized
by
combining
double
dynamic
covalent
bonding
non-covalent
interactions.
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.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(52)
Published: Aug. 1, 2024
Abstract
Materials
combining
stretchability
and
sensitivity
to
external
stimuli
are
key
for
wearable
electronics
applications
enable
the
emergence
of
disruptive
technologies
in
biosensing,
health
monitoring,
photodetection
human
motion
recognition.
Conductive
organohydrogels
have
gained
significant
attention
due
their
high
cost‐effective
preparation.
Biopolymers
like
gelatin
alginate
offer
unique
opportunities
developing
responsive
devices,
owing
biocompatibility
toward
environmental
factors.
Here
sustainable
bio‐inspired
method
is
presented
produce
alginategelatin
transparency
visible
range,
ionic
conductivity,
stretchability,
multiresponsiveness.
The
controlled
alginate's
crosslinking
with
various
metal
cations
Mn
2+
,
Cu
Fe
3+
Zr
4+
enables
modulating
conductivity
as
well
finely
tuning
material's
thermal
mechanical
properties.
These
show
responsiveness
temperature
(from
10
50
degrees,
a
0.19
K
−1
),
relative
humidity
20
80%,
0.022
RH(%)
strain
(gauge
factor
>1.6),
enabling
real‐time
monitoring
physiological
parameters.
Remarkably,
they
also
exhibit
photoresponsivity
9.2
µA
W
under
light,
feature
rarely
reported
literature.
ease
chosen
sensitivities
open
perspectives
applying
these
materials
stretchable
sensors.
Journal of Materials Chemistry B,
Journal Year:
2023,
Volume and Issue:
12(3), P. 762 - 771
Published: Dec. 4, 2023
For
hydrogel-based
flexible
sensors,
it
is
a
challenge
to
enhance
the
stability
at
sub-zero
temperatures
while
maintaining
good
self-healing
properties.
Herein,
an
anti-freezing
nanocomposite
hydrogel
with
properties
and
conductivity
was
designed
by
introducing
cellulose
nanocrystals
(CNCs)
phytic
acid
(PA).
The
CNCs
were
grafted
polypyrrole
(PPy)
chemical
oxidation,
which
used
as
nanoparticle
reinforcement
phase
reinforce
mechanical
strength
of
hydrogels
(851.8%).
PA
biomass
material
could
form
strong
hydrogen
bond
interactions
H
