Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 21, 2024
Abstract
Flexible
multimodal
sensors
have
gained
increasing
popularity
for
applications
in
healthcare
and
extreme
environment
operations
owing
to
their
all‐around
environmental
perception
data
acquisition
capabilities.
However,
fabricating
a
magnetism‐mechanics‐humidity
sensor
that
possesses
high
sensitivity
without
signal
overlapping
while
facile
methodology
remains
great
challenge.
Herein,
highly
sensitive,
conductive,
flexible
hydrogel
sponge
with
discriminable
magnetism,
mechanics,
humidity
sensing
capability
is
proposed,
which
shows
stable
pore
size
(19.30
µm)
satisfactory
mechanical
properties
based
on
the
synergistic
hydrogen
bonding
among
sodium
alginate,
poly(vinyl
alcohol)
glycerol.
The
proposed
can
not
only
display
favorable
ability
rapid
response/recovery
time
(2.5/4
s)
but
also
possess
enhanced
sensitivities
(a
gauge
factor
of
0.46
T
−1
magnetic
field,
−1.16
kPa
pressure),
superior
stability
durability
(over
8000
cycles).
Benefiting
from
separated
capacitive
resistive
response
signals,
precisely
distinguish
magnetic,
mechanical,
stimuli
cross‐talk.
Further,
arrays
assisted
by
deep
learning
algorithm
are
developed
realize
gesture
language
recognition
accuracy
99.17%.
It
be
believed
this
high‐performance
will
good
prospects
future
soft
electronics
human‐machine
interaction
systems.
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
12(16), С. 9371 - 9399
Опубликована: Янв. 1, 2024
We
present
a
comprehensive
review
of
the
recent
research
advances
in
field
sensors
based
on
hydrogels
with
nanofillers.
The
characteristics
and
design
strategies
nanofillers
are
highlighted
multiple
properties
conductive
nanocomposite
described.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(34)
Опубликована: Апрель 8, 2024
Abstract
Real‐time
detection
of
different
physiological
characteristics
is
crucial
for
human
physical
and
mental
health.
A
system
with
multimodal
sensing
capability,
high
sensitivity,
excellent
mechanical
properties,
environmental
stability
highly
desirable,
but
it
still
a
great
challenge.
Inspired
by
the
structural
gradient
biological
tissues,
multifunctional
sensor
based
on
carboxylic
styrene
butadiene
rubber
(XSBR)
sodium
polyacrylate
(PAANa)
non‐covalently
modified
MXenes
prepared
in
this
study,
which
exhibit
distribution
simultaneously
formed
an
orientation
arrangement
at
bottom
matrix
through
formation
hydrogen
bonding
interactions
PAANa.
The
material
shows
considerable
stretchability
244%
strength
7.67
MPa,
electrical
conductivity
55.40
S
m
‒1
,
low
percolation
threshold
2.48
wt%,
response
to
strain
(gauge
factor
906.7
within
98%
strain)
humidity
(relative
resistance
change
530%
11–93%
relative
humidity).
Based
superior
performances
XSBR/PAANa/MXene
composite,
integrated
designed
accurately
detect
respiration
body
movements
various
scales.
This
work
provides
new
perspective
development
novel
biomimetic
functional
applications.
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.
Abstract
Epidermal
dry
electrodes
with
high
skin‐compliant
stretchability,
low
bioelectric
interfacial
impedance,
and
long‐term
reliability
are
crucial
for
biopotential
signal
recording
human–machine
interaction.
However,
incorporating
these
essential
characteristics
into
remains
a
challenge.
Here,
skin‐conformal
electrode
is
developed
by
encapsulating
kirigami‐structured
poly(3,4‐ethylenedioxythiophene):poly(styrene
sulfonate)
(PEDOT:PSS)/polyvinyl
alcohol
(PVA)/silver
nanowires
(Ag
NWs)
film
ultrathin
polyurethane
(PU)
tape.
This
Kirigami‐structured
PEDOT:PSS/PVA/Ag
NWs/PU
epidermal
exhibits
sheet
resistance
(≈3.9
Ω
sq
−1
),
large
stretchability
(>100%),
impedance
(≈27.41
kΩ
at
100
Hz
≈59.76
10
Hz),
sufficient
mechanoelectrical
stability.
enhanced
performance
attributed
to
the
synergistic
effects
of
ionic/electronic
current
from
PEDOT:PSS/Ag
NWs
dual
conductive
network,
Kirigami
structure,
unique
encapsulation.
Compared
existing
or
standard
gel
electrodes,
as‐prepared
possess
lower
noise
in
various
conditions
(e.g.,
sweat,
wet,
movement),
indicating
superior
water/motion‐interference
resistance.
Moreover,
they
can
acquire
high‐quality
signals
even
after
water
rinsing
ultrasonic
cleaning.
These
outstanding
advantages
enable
effectively
monitor
human
motions
real‐time
record
signals,
such
as
electrocardiogram,
electromyogram,
electrooculogram
under
conditions,
control
external
electronics,
thereby
facilitating
interactions.
