Journal of Biomedical Materials Research Part A,
Journal Year:
2024,
Volume and Issue:
113(1)
Published: Dec. 24, 2024
Wearable
nanocomposite
stretch
sensors
are
an
exciting
new
development
in
biomaterials
for
biomechanical
motion-tracking
technology,
with
applications
the
treatment
of
low
back
pain,
knee
rehabilitation,
fetal
movement
tracking,
and
other
fields.
When
strained,
resistance
low-cost
is
reduced,
enabling
human
motion
to
be
monitored
using
a
suitable
sensor
array.
However,
current
technologies
have
exhibited
significant
drift,
form
increased
electrical
resistance,
if
left
stored
typical
room
conditions.
The
purpose
present
work
was
evaluate
influence
several
environmental
factors,
including
temperature,
humidity,
oxygen
levels,
light
exposure,
that
could
impact
change
properties
these
sensors.
These
physiological
conditions
during
use
on
subjects
as
well
storage,
making
it
vital
understand
their
effects
properties.
electromechanical
performance
under
range
over
period
weeks.
observations
obtained
indicate
presence
humidity
environment
where
primary
contributor
drift
response.
Sensors
kept
de-oxygenated
or
desiccated
environments
do
not
display
increase
time.
This
understanding
allows
long-term
storage
without
degradation.
It
also
assists
identifying
internal
processes
at
within
nanoparticle-polymer
matrix
cause
changes
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 30, 2024
Abstract
Owing
to
their
high
sensitivity
across
a
wide
stress
range,
mechanical
reliability,
and
rapid
response
time,
flexible
polymer
foam
piezoresistive
sensors
have
been
extensively
used
in
various
fields.
The
reliable
application
of
these
under
harsh
environments,
however,
is
severely
limited
by
structural
devastation
poor
interfacial
bonding
between
polymers
conductive
nanoparticles.
To
address
the
above
issues,
robust
MXene/CNT
nanocoatings
on
surface,
where
chemical
assembly
MXene
nanosheets
physical
anchoring
CNTs
lead
strong
bonding,
are
designed
described,
which
endows
foams
with
reliability
unexpected
multi‐functionalities
without
compromising
instinct
properties.
optimized
nanocomposites
thus
maintain
outstanding
wide‐temperature
flexibility
(−60–210
°C)
elasticity
(≈3%
residual
strain
after
1000
cycles).
Moreover,
display
good
at
relatively
range
0–70%
remarkable
stability
acidic
alkaline
settings.
Furthermore,
exceptional
fire
resistance
(UL‐94
V‐0
rating)
can
provide
stable
sensing
behavior
(over
300
cycles)
even
being
exposed
flames
for
5
s,
making
them
one
most
materials
so
far.
Clearly,
this
work
widens
applications
based
silicone
environments.
ACS Applied Polymer Materials,
Journal Year:
2024,
Volume and Issue:
6(10), P. 5684 - 5695
Published: May 14, 2024
Conductivity
in
flexible
silicone
rubber
(SR)
is
usually
achieved
by
a
large
number
of
fillers,
which
tend
to
degrade
the
mechanical
properties.
Therefore,
improving
efficiency
conductive
fillers
key
producing
high
performance
SR
composites.
In
this
study,
approximately
28.58%
ferrosoferric
oxide
was
loaded
onto
graphene
(Fe3O4@RGO)
prepare
composites
inducing
Fe3O4@RGO
alignment
room-temperature
vulcanized
matrix
using
homemade
translational
and
rotational
magnetic
fields.
Raman
spectroscopy
scanning
electron
microscopy
showed
that
formation
field-induced
Fe3O4@RGO-oriented
significantly
improves
electrical
conductivity
The
orientation
with
magnetic-field
strength
180
mT
2
cm/s
field
or
r/s
rotating
field.
Moreover,
electromagnetic
shielding
efficacy
were
up
1.10
ms/mm
20
dB
for
field,
0.84
ms/mm,
21.6
respectively.
material's
overall
improved
controllable
gradient
materials
under
influence
Thus,
study
provides
feasible
method
preparing
highly
soft
polymers.
ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(10), P. 11690 - 11703
Published: May 8, 2024
Developing
flexible
wearable
strain
sensors
that
combine
high
performance
and
cost-effectiveness
remains
a
challenge.
We
proposed
the
polarity-induced
adsorption
theory
based
on
like
dissolves
principle,
which
can
dramatically
increase
loading
rate
of
carbon
nanomaterials
TPU
electrospun
nanofiber
substrates,
constructed
PDA/CB/CNF/TPU
(PCCT)
with
dual-mode
three-dimensional
nanobrush-bridging
structures
binary
carbon-based
active
filler
through
introduction
mixed
dispersant
system.
The
trend
similar
effects
sheet
resistance
present
for
variety
systems
proves
objective
existence
applicability
theory,
then,
microscopic
mechanism
action
model
is
analyzed
explained.
optimization
scheme
summarized
this
basis
resulted
in
PCCT
an
ultrahigh
nanomaterial
59.5%
ultralow
68.5
Ω/sq,
enabled
high-density
conductive
network
synergistic
double-bridging
to
demonstrate
full-stretch
range
responsiveness
(0.12–285%)
sensitivity
(GF
=
25.5
(0–100%),
84.3
(100–200%)
312.4
(200–285%)),
realizing
enhancement
low-cost
devices.
Finally,
testing
response
different
levels
including
human
joint
movements
muscle
such
as
blinking
proved
practical
value
wide
applications
field
monitoring.
ACS Applied Polymer Materials,
Journal Year:
2024,
Volume and Issue:
6(11), P. 6530 - 6539
Published: June 3, 2024
Natural
polymers
are
known
for
their
"green"
characteristics
with
high
biodegradability
and
biocompatibility
thus
have
great
potential
the
development
of
transient
sensors.
In
this
paper,
flexible
stretchable
piezoresistive
sensors
were
developed
based
on
natural
polymer
blends
starch
cellulose.
When
starch,
water-soluble
sodium
carboxymethyl
cellulose,
plasticizer
glycerol
combined,
highly
thin
films
created
subsequently
used
as
substrates
to
develop
degradable
strain
The
resultant
exhibit
a
gauge
factor
3.9,
fast
response
(response
time
0.38
s),
durability,
failure
up
180%,
low
hysteresis
(∼15%)
when
exposed
20%
cyclic
tensile
strain.
demonstrated
abilities
detect
respiration
rate
human
joint
bending
(such
wrist,
finger,
neck
joints).
More
significantly,
it
was
shown
that
sensor
can
be
dissolved
in
hot
water
(95
°C),
indicating
is
easily
disposed
of.
It
expected
offers
sustainable
options
electronics
applications
health
sports
monitoring
human–machine
interfaces.
ACS Applied Electronic Materials,
Journal Year:
2024,
Volume and Issue:
6(7), P. 5117 - 5125
Published: June 24, 2024
Laser-induced
graphene
(LIG)
shows
broad
application
prospects
in
flexible
pressure
sensors
due
to
its
adjustable
electrical
properties,
good
economy,
and
roll-to-roll
compatibility.
Incorporating
an
appropriate
nanomaterial
into
LIG
is
effective
method
significantly
improve
pressure-sensitive
properties.
In
this
study,
we
report
MXene
nanoengineered
for
highly
sensitive
piezoresistive
sensors.
The
photochemically
synthesized
MXene-derived
nanosheets
are
anchored
the
porous
network
of
form
a
MXene/graphene
heterostructure
(LIMG)
by
situ
coconversion
MXene/Polyamide
acid
(PAA)
composite
under
laser
irradiation.
Benefiting
from
conductive
paths
created
matrix
stable
chemical
bonding
MXene-LIG
interfaces,
LIMG
sensor
exhibits
sensitivity
20
kPa–1,
which
567%
higher
than
sensor.
Meanwhile,
has
wide
range
80
kPa,
fast
response/recovery
time
42/28
ms,
excellent
stability
over
4000
cycles.
practical
applications,
effectively
monitors
human
physiological
signals,
such
as
voice,
pulse,
respiration,
proving
wearable
health
monitoring.
Furthermore,
preparation
two-dimensional/three-dimensional
(2D/3D)
heterostructures
one-step
expected
promote
development
synthesis
technology.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 22, 2025
Abstract
Altermagnetism
and
ferroelectricity
are
reported
in
certain
materials.
However,
the
possibility
of
their
coexistence
or
interplay
a
single‐material
phase
remains
an
open
question.
Here,
multiferroicity
hexagonal
wurtzite
MnSe
(
w
‐MnSe)
is
explored
via
first‐principles
calculations.
The
‐MnSe
exhibits
altermagnet
semiconducting
nature
characterized
by
direct
bandgap
1.98
eV
spin
splitting
up
to
245
meV
valence
band
structure.
has
in‐plane
magnetic
anisotropy
energy
(MAE)
−31
µeV
per
cell
along
‐direction
Néel
temperature
T
N
)
≈405
K.
Besides,
giant
out‐of‐plane
spontaneous
electric
polarization
53
µC
cm
−
2
moderate
barrier
0.37
f.u
−1
.
ferroelectric
critical
C
965
K
obtained,
this
may
indicate
excellent
thermal
stability.
correlation
postulated
between
altermagnetim
control
orientation
mediated
rotation
polyhedra
formed
nonmagnetic
elements
within
lattice
finding
implies
that
can
be
potential
material
for
future‐generation
multiferroic
devices
operate
above
room
temperature.
