A Low-Cost Hydrogel Electrode for Multifunctional Sensing: Strain, Temperature, and Electrophysiology
Biosensors,
Год журнала:
2025,
Номер
15(3), С. 177 - 177
Опубликована: Март 11, 2025
With
the
rapid
development
of
wearable
technology,
multifunctional
sensors
have
demonstrated
immense
application
potential.
However,
limitations
traditional
rigid
materials
restrict
flexibility
and
widespread
adoption
such
sensors.
Hydrogels,
as
flexible
materials,
provide
an
effective
solution
to
this
challenge
due
their
excellent
stretchability,
biocompatibility,
adaptability.
This
study
developed
a
sensor
based
on
composite
hydrogel
polyvinyl
alcohol
(PVA)
sodium
alginate
(SA),
using
poly(3,4-ethylenedioxythiophene)/polystyrene
sulfonate
(PEDOT:PSS)
conductive
material
achieve
detection
strain,
temperature,
physiological
signals.
The
features
simple
fabrication
process,
low
cost,
impedance.
Experimental
results
show
that
prepared
exhibits
outstanding
mechanical
properties
conductivity,
with
strength
118.8
kPa,
elongation
334%,
conductivity
256
mS/m.
In
strain
sensing,
demonstrates
response
minor
strains
(4%),
high
sensitivity
(gauge
factors
0.39
for
0–120%
0.73
120–200%
ranges),
short
time
(2.2
s),
hysteresis,
cyclic
stability
(over
500
cycles).
For
temperature
achieves
sensitivities
−27.43
Ω/K
(resistance
mode)
0.729
mV/K
(voltage
mode),
along
stable
performance
across
varying
ranges.
Furthermore,
has
been
successfully
applied
monitor
human
motion
(e.g.,
finger
bending,
wrist
movement)
signals
electrocardiogram
(ECG),
electromyogram
(EMG),
electroencephalogram
(EEG),
highlighting
its
significant
potential
in
health
monitoring.
By
employing
efficient
method,
presents
high-performance
sensor,
offering
novel
insights
technical
support
advancement
devices.
Язык: Английский
Spinning solution viscosity reducing and wet spinning of carbon black-based elastic conductive fibers for sports monitoring and healthcare electrical heating
Jiajia Zhuang,
Yang Liu,
David Bian
и другие.
Journal of Materials Research and Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 1, 2025
Язык: Английский
On-Demand plus and minus strategy to design conductive Nanocellulose: From low-dimensional structural materials to multi-dimensional smart sensors
Chemical Engineering Journal,
Год журнала:
2025,
Номер
unknown, С. 161552 - 161552
Опубликована: Март 1, 2025
Язык: Английский
A highly stretchable, self-adhesive, anti-freezing dual-network conductive carboxymethyl chitosan based hydrogel for flexible wearable strain sensor
International Journal of Biological Macromolecules,
Год журнала:
2025,
Номер
308, С. 142301 - 142301
Опубликована: Март 24, 2025
Язык: Английский
Nanocellulose-hydrogel hybrids: A review on synthesis and applications in agriculture, food packaging and water remediation
International Journal of Biological Macromolecules,
Год журнала:
2025,
Номер
unknown, С. 143081 - 143081
Опубликована: Апрель 1, 2025
Язык: Английский
Enhancing the Sensing Performance of Chitosan/Chitosan Nanofiber-Based Hydrogel Using Carbonized Crepe Paper
ACS Applied Electronic Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 27, 2024
Polysaccharide-containing
hydrogels
are
noted
for
their
adhesion,
self-healing,
and
mechanical
properties,
yet
sensing
performance
at
low
strains
needs
improvement.
This
challenge
stems
from
integrating
hydrophobic
electronic
conductive
materials
to
exceed
percolation
threshold
within
hydrophilic
polymer
networks.
To
address
this,
a
composite
hydrogel
was
developed
using
chitosan
(CS)/chitosan
nanofiber
(CSF)
encapsulating
carbonized
crepe
paper
(CCP),
which
has
network
of
interwoven
cellulose
fibers.
The
integration
CCP
with
the
CS/CSF-based
grants
satisfactory
self-healing
capability,
antibacterial
properties.
As
an
electronically
material
continuous
network,
significantly
improves
hydrogel's
sensitivity,
achieving
high
gauge
factor
13.3
in
250–400%
strain
range.
sensor
also
shows
detection
limit
(0.2%),
fast
response
recovery
times
(166
ms),
excellent
stability
durability
(over
1000
cycles
10%
strain).
These
features
make
hydrogel-based
effective
monitoring
human
health
activities.
Furthermore,
soaking
water-glycerol
binary
solvent
composite-G
water
retention
maintains
properties
−18
60
°C.
work
offers
promising
approach
enhancing
polysaccharide-based
performance.
Язык: Английский
Carboxymethyl Chitosan‐based Biodegradable Films Preparation and Prospects for Food Preservation
ChemistrySelect,
Год журнала:
2024,
Номер
10(1)
Опубликована: Дек. 31, 2024
Abstract
In
this
study,
carboxymethyl
chitosan
(CMCS)‐based
biodegradable
films
were
prepared
by
blending
with
polyvinyl
alcohol
(PVA)
in
water
and
characterized
for
their
potential
application
as
innovative
food
packaging
materials.
Blends
of
CMCS
PVA
polymer
solutions
cast
dried
at
50
°C
48
hours
to
obtain
a
flexible
transparent
film.
The
different
composition
using
various
techniques
including
Fourier‐transform
infrared
spectroscopy
(FTIR),
X‐ray
diffraction
(XRD),
tensile
strength
(TS),
scanning
electron
microscopy
(SEM),
Thermogravimetric
analysis
(TG).
FTIR
confirmed
the
successful
incorporation
groups
into
molecules,
indicating
modification
chitosan.
XRD
pattern
indicates
an
amorphous
phase
films.
SEM
images
film
surfaces
show
uniform
structure
containing
no
cracks
or
holes
revealing
that
both
had
good
compatibility
unique
film‐forming
ability.
CMCS/PVA
demonstrated
superior
performance
compared
conventional
synthetic
materials,
low
vapor
transmission
rate
(53.46
g/m
2
/h),
(10.8
MPa),
elongation
break
(20.36%).
Practical
tests
showed
coating
green
chilies
reduced
loss
20%
uncoated
chilies,
effectively
enhancing
shelf
life.
Язык: Английский