Abstract
Hydrogel-based
flexible
sensors
have
demonstrated
significant
advantages
in
the
fields
of
electronics
and
human–machine
interactions
(HMIs),
including
outstanding
flexibility,
high
sensitivity,
excellent
conductivity,
exceptional
biocompatibility,
making
them
ideal
materials
for
next-generation
smart
HMI
sensors.
However,
traditional
hydrogel
still
face
numerous
challenges
terms
reliability,
multifunctionality,
environmental
adaptability,
which
limit
their
performance
complex
application
scenarios.
Nanomaterial-based
composite
hydrogels
significantly
improve
mechanical
properties,
multifunctionality
by
incorporating
conductive
nanomaterials,
thereby
driving
rapid
development
wearable
HMIs.
This
review
systematically
summarizes
latest
research
progress
on
based
carbon
metal
two-dimensional
MXene
provides
a
comprehensive
analysis
sensing
mechanisms
HMI,
triboelectric
nanogenerator
mechanism,
stress-resistance
response
electrophysiological
acquisition
mechanism.
The
further
explores
applications
hydrogel-based
personal
electronic
device
control,
virtual
reality/augmented
reality
(VR/AR)
game
interaction,
robotic
control.
Finally,
current
technical
status
future
directions
nanomaterial
are
summarized.
We
hope
that
this
will
provide
valuable
insights
inspiration
design
nanocomposite
applications.
Biomacromolecules,
Год журнала:
2024,
Номер
25(7), С. 4384 - 4393
Опубликована: Июнь 1, 2024
Traditional
hydrogel-based
wearable
sensors
with
flexibility,
biocompatibility,
and
mechanical
compliance
exhibit
potential
applications
in
flexible
electronics.
However,
the
low
sensitivity
poor
environmental
resistance
of
traditional
hydrogels
severely
limit
their
practical
application.
Herein,
high-ion-conducting
poly(vinyl
alcohol)
(PVA)
nanocomposite
were
fabricated
applied
for
harsh
environments.
MXene
ion-conducting
microchannels
poly(sodium
4-styrenesulfonate)
ion
sources
contributed
to
directional
transport
abundant
free
ions
hydrogel,
which
significantly
improved
mechanical–electric
conversion
piezoelectric
triboelectric
sensors.
More
importantly,
glycerol
as
an
antifreezing
agent
enabled
function
Therefore,
hydrogel
exhibited
high
gauge
factor
(GF)
at
−20
°C
(GF
=
3.37)
60
3.62),
enabling
sensor
distinguish
different
writing
letters
sounding
words.
Meanwhile,
generators
showed
excellent
performance
regardless
low-
(−20
°C)
or
high-
(60
temperature
environments,
can
be
a
visual
feedback
system
information
transmission
without
external
power
sources.
This
work
provides
self-powered
that
electronics
under
conditions.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 20, 2024
With
the
growing
demand
for
flexible
sensing
systems
and
precision
engineering,
there
is
an
increasing
need
sensors
that
can
accurately
measure
analyze
multimode
signals.
3D
printing
technology
has
emerged
as
a
crucial
tool
in
development
of
multimodal
due
to
its
advantages
design
flexibility
manufacturing
complex
structures.
This
paper
provides
review
recent
advancements
within
field
sensors,
with
particular
emphasis
on
relevant
working
mechanisms
involved
decoupling
First,
research
status
printed
discussed,
including
their
responsiveness
different
modal
stimuli
such
mechanics,
temperature,
gas.
Furthermore,
it
explores
methods
signals
through
structural
material
design,
artificial
intelligence,
other
technologies.
Finally,
this
summarizes
current
challenges
limited
selection,
difficulties
miniaturization
integration,
crosstalk
between
multisignal
outputs.
It
also
looks
forward
future
directions
area.
Nanoscale,
Год журнала:
2024,
Номер
16(15), С. 7427 - 7436
Опубликована: Янв. 1, 2024
Exploded
diagram
of
the
sensor
array
and
its
core
mechanism.
The
three-dimensional
hierarchical
insulation
is
realized
at
intersection
rows
columns,
minimum
port
output
interdigital
realized.
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 21, 2024
Abstract
The
design
and
fabrication
of
materials
that
can
concurrently
respond
to
light
gas
within
the
dual‐modal
recognition
domain
present
a
significant
challenge
due
contradictory
structural
requirements.
This
innovative
strategy
introduces
type‐I
heterojunction,
combining
properties
Sb
2
Te
3
WSe
nanosheets,
overcome
these
obstacles.
heterojunction
is
prepared
through
precise
stacking
approach
create
single‐side
barrier
on
valence
band
near‐zero
offset
conduction
band.
resulting
/WSe
demonstrates
unparalleled
performance,
showcasing
best
integrated
photoelectric
sensing
performance
in
single
device
date.
Based
above
features,
successfully
integrates
visual
olfactory
achieving
first
biomimetic
visual‐olfactory
dual‐mode
device.
simulation
increased
accuracy
distinguishing
electric
fuel‐powered
cars
from
≈50%
≈96%.
work
novel
creating
efficient,
self‐powered
materials,
paving
way
for
next‐generation
dual‐model
devices
with
broad
applications
environmental
protection,
medical
care,
other
fields.
Journal of Materials Chemistry B,
Год журнала:
2024,
Номер
12(21), С. 5238 - 5247
Опубликована: Янв. 1, 2024
This
study
introduces
a
thermally
responsive
smart
hydrogel
with
enhanced
electrical
properties
achieved
through
volume
switching.
advancement
was
realized
by
incorporating
multiscale
liquid
metal
particles
(LMPs)
into
the
PNIPAM
during
polymerization,
using
their
inherent
elasticity
and
conductivity
when
deswelled.
Unlike
traditional
conductive
additives,
LMPs
endow
remarkably
consistent
switching
ratio,
significantly
enhancing
is
attributed
to
minimal
nucleation
effect
of
polymerization
liquid-like
behavior,
like
vacancies
in
polymeric
under
compression.
The
PNIPAM/LMP
exhibits
highest
switching,
an
unprecedented
switch
6.1
orders
magnitude.
Even
after
repeated
swelling/deswelling
cycles
that
merge
some
increase
swelled,
consistently
maintains
exceeding
4.5
magnitude,
which
still
record
date.
Comprehensive
measurements
reveal
possesses
robust
mechanical
properties,
tissue-like
compression
modulus,
biocompatibility,
self-healing
capabilities.
These
features
make
ideal
candidate
for
long-term
implantable
bioelectronics,
offering
solution
mismatch
dynamic
human
tissues.
