A Highly Sensitive, Conductive, and Flexible Hydrogel Sponge as a Discriminable Multimodal Sensor for Deep‐Learning‐Assisted Gesture Language Recognition
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.
Язык: Английский
A Fabric‐Based Multimodal Flexible Tactile Sensor With Precise Sensing and Discrimination Capabilities for Pressure‐Proximity‐Magnetic Field Signals
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 9, 2025
Abstract
Currently,
flexible
tactile
sensors
integrating
proximity‐pressure
sensing
encounter
challenges
in
efficient
multisignal
acquisition,
accurate
recognition,
cost
control,
and
scalability.
Herein,
a
fabric‐based
multimodal
capacitive
sensor
(MFCS),
combining
an
integrated
fabric
electrode
design
with
magnetic
tilted
micropillars
(MTM)
array
microstructure,
is
developed.
This
innovative
significantly
enhances
the
sensor's
fringing
effect,
responsiveness,
dielectric
layer's
deformation
ability,
enabling
precise
perception
of
pressure,
proximity,
field
changes.
The
MFCS
demonstrates
high
sensitivity
rapid
response
characteristics,
achieving
0.146
kPa⁻¹
under
0–2
kPa
pressure
response/recovery
times
≈12/24
ms.
Moreover,
it
detects
hand
proximity
within
20
cm
range,
−0.039
cm⁻¹
detection
limit
10
mT,
showing
−1.72
T⁻¹
60–230
mT
range.
operates
effectively
both
capacitance
resonant
frequency
modes,
distinguishing
different
signals,
thus
offering
new
possibilities
for
smart
wearable
devices
interactive
systems.
Overall,
features
sensing,
fully
structure,
cost‐effectiveness,
ease
fabrication,
making
promising
human–computer
interaction,
artificial
intelligence,
health
monitoring.
Язык: Английский
Biomedical Applications of Aerogels: Therapeutic Potential, Safety, and Future Research Directions
Polymers for Advanced Technologies,
Год журнала:
2024,
Номер
35(12)
Опубликована: Дек. 1, 2024
ABSTRACT
Aerogels
are
garnering
considerable
attention
in
biomedical
fields
due
to
their
unique
physicochemical
properties.
These
materials
noted
for
low
density,
high
porosity,
and
customizable
pore
structures,
making
them
highly
suitable
applications
such
as
drug
delivery,
regenerative
medicine,
wound
healing.
They
provide
excellent
platforms
loading
drugs
active
biomolecules.
Consequently,
research
into
the
therapeutic
potential
of
aerogels
has
surged,
both
vitro
vivo,
reflecting
an
increased
acknowledgment
promise.
Despite
this
growing
body
research,
detailed
data
on
vivo
performance
safety
remain
sparse.
While
polymer‐based,
silica‐based,
hybrid
generally
deemed
safe,
there
is
still
a
lack
comprehensive
understanding
regarding
acute,
subacute,
chronic
toxicity.
This
review
presents
thorough
examination
aerogels,
exploring
conventional
uses
innovative
like
decontamination.
We
assess
biological
impacts
cells
organisms,
focusing
effectiveness
safety.
Through
review,
we
aim
highlight
current
state
aerogel
field
pinpoint
key
areas
where
further
investigation
needed
ensure
safe
effective
use
medical
applications.
Язык: Английский
High-Performance Flexible Sensor with Sensitive Strain/Magnetic Dual-Mode Sensing Characteristics Based on Sodium Alginate and Carboxymethyl Cellulose
Gels,
Год журнала:
2024,
Номер
10(9), С. 555 - 555
Опубликована: Авг. 27, 2024
Flexible
sensors
can
measure
various
stimuli
owing
to
their
exceptional
flexibility,
stretchability,
and
electrical
properties.
However,
the
integration
of
multiple
into
a
single
sensor
for
measurement
is
challenging.
To
address
this
issue,
developed
in
study
utilizes
natural
biopolymers
sodium
alginate
carboxymethyl
cellulose
construct
dual
interpenetrating
network,
This
results
flexible
porous
sponge
that
exhibits
dual-modal
response
strain
magnetic
stimulation.
The
dual-mode
achieved
maximum
tensile
strength
429
kPa
elongation
at
break
24.7%.
It
also
exhibited
rapid
times
reliable
stability
under
both
stimuli.
foam
intended
use
as
wearable
electronic
device
monitoring
joint
movements
body.
provides
swift
stable
sensing
mechanical
arising
from
activities,
such
stretching,
compression,
bending.
Furthermore,
generates
opposing
signals
stimulation,
enabling
real-time
decoupling
different
employed
simple
environmentally
friendly
manufacturing
method
sensor.
Because
its
remarkable
performance,
it
has
significant
potential
application
smart
electronics
artificial
electroskins.
Язык: Английский