Small Structures,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 11, 2024
The
demand
for
transparent
electromagnetic
interference
(EMI)
shielding
materials
has
intensified,
driven
by
the
shortcomings
of
conventional
materials,
which
exhibit
limited
light
transmittance
properties
and
struggle
to
perform
effectively
in
complex
environments.
Herein,
a
conductive,
stretchable,
adaptable
P(AM
‐co
‐AA)
hydrogel
is
developed
cross‐linking
acrylamide
(AM)
with
acrylic
acid
(AA).
hydrophilic
groups
contained
AA
AM
endow
hydrogels
transmission
over
80%.
introduction
carboxyl
group
acyl
amino
provides
good
hydrogen
bonding
environment,
rich
polymer
network
structure
formed
appropriate
monomer
ratio
more
conducive
mechanical
EMI
hydrogels.
demonstrates
favorable
properties,
boasting
maximum
strain
at
break
1322%.
Additionally,
performance
as
high
37
dB.
Even
when
subjected
external
forces,
maintains
total
effectiveness
20
dB
level
150%.
In
this
work,
ideas
are
provided
prepare
stretchable
excellent
application
environment.
Nano-Micro Letters,
Journal Year:
2024,
Volume and Issue:
17(1)
Published: Sept. 20, 2024
Abstract
Research
efforts
on
electromagnetic
interference
(EMI)
shielding
materials
have
begun
to
converge
green
and
sustainable
biomass
materials.
These
offer
numerous
advantages
such
as
being
lightweight,
porous,
hierarchical.
Due
their
porous
nature,
interfacial
compatibility,
electrical
conductivity,
hold
significant
potential
EMI
Despite
concerted
the
of
been
reported,
this
research
area
is
still
relatively
new
compared
traditional
In
particular,
a
more
comprehensive
study
summary
factors
influencing
including
pore
structure
adjustment,
preparation
process,
micro-control
would
be
valuable.
The
methods
characteristics
wood,
bamboo,
cellulose
lignin
in
field
are
critically
discussed
paper,
similar
summarized
analyzed.
composite
fillers
various
were
reviewed.
paper
also
highlights
mechanism
well
existing
prospects
challenges
for
development
trends
field.
Nano-Micro Letters,
Journal Year:
2024,
Volume and Issue:
16(1)
Published: July 17, 2024
The
demand
of
high-performance
thin-film-shaped
deformable
electromagnetic
interference
(EMI)
shielding
devices
is
increasing
for
the
next
generation
wearable
and
miniaturized
soft
electronics.
Although
highly
reflective
conductive
materials
can
effectively
shield
EMI,
they
prevent
deformation
owing
to
rigidity
generate
secondary
pollution
simultaneously.
Herein,
stretchable
EMI
thin
film
with
absorption-dominant
behavior
presented.
consist
liquid
metal
(LM)
layer
LM
grid-patterned
separated
by
a
elastomeric
film,
fabricated
leveraging
superior
adhesion
aerosol-deposited
on
elastomer.
demonstrate
high
effectiveness
(SE)
(SE
The
extraction
of
wool
keratin
protein
(WK)
from
waste
has
garnered
attention
for
its
potential
application
in
tissue
engineering,
drug
delivery,
and
flexible
pressure
sensors,
contributing
to
the
efficient
utilization
wool.
Herein,
we
utilized
biobased
polylactic
acid
(PLA)
as
polymer
electrospinning
incorporated
carbon
nanotubes
(CNTs)
conductive
additives
solution.
WK,
extracted
via
a
reduction
method,
exhibited
excellent
dispersibility
stability
spinning
solution,
enabling
preparation
highly
sensitive
resistive
sensor.
results
demonstrate
that
PLA/WK/CNTs
@CNTs
sensor
exhibits
high
sensitivity
12.64
kPa–1
fast
response/recovery
time
63
ms.
Moreover,
it
possesses
lowest
detection
limit
5.64
Pa,
over
6000
cycles,
good
linearity
within
wide
working
range
(0–30
kPa),
making
suitable
wearable
biometric
monitoring
applications
such
finger
pressure,
bending,
pulse
monitoring,
well
visual
interaction
interactive
blankets
infants.
Therefore,
propose
high-quality
scheme,
showcasing
discarded
smart
living.
This
paper
presents
an
approach
to
enhancing
nanocellulose
aerogels
as
flexible
piezoresistive
sensor
substrates
by
constructing
polyphenol–metal
networks
within
the
aerogel
structure.
Specifically,
tannic
acid
(TA),
a
plant-based
polyphenol,
is
utilized
improve
aerogel's
mechanical
properties,
such
compressive
strength
and
elasticity,
which
are
essential
for
durability
in
applications.
The
integration
of
multiwalled
carbon
nanotubes
(MWCNTs)
with
further
bolsters
electrical
conductivity,
TA
playing
key
role
stabilizing
dispersion
MWCNTs
matrix.
resulting
aerogel,
prepared
through
freeze-drying,
exhibits
significant
improvements:
316.7
kPa
under
50%
deformation,
3
times
that
pure
impressive
80%
elastic
recovery
rate,
consistent
performance
cyclic
compression
3600
s.
work
offers
sustainable
straightforward
creating
enhanced
resilience
stable
aligned
green
material
sourcing
scalability.
Research Square (Research Square),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 8, 2024
Abstract
Hydrogels
are
regarded
as
an
ideal
medium
for
human-machine
interaction
(HMI)
due
to
their
adjustable
modulus
and
flexibility,
enabling
seamless
with
smart
devices.
However,
in
the
field
of
medical
rehabilitation,
most
hydrogel-based
sensors
simply
used
detect
motion
signals
fragments
rarely
applied
help
patients
rehabilitation
training
improve
efficiency
doctors'
diagnosis.
This
is
unstable
sensing
properties
poor
mechanical
hydrogels.
The
durability
greatly
limits
application
sensors.
Here,
a
conductive
hydrogel
sensor
visual
temperature
sensitivity
good
(300%
strain,
breaking
stress
0.19
MPa)
fabricated
by
introducing
polyvinyl
alcohol
(PVA)-borax
system
combined
freeze-thaw
physical
regulation
strategy.
PVA/PNIPAM/PEDOT:
PSS
(PPP)
hydrogels
possess
rapid
response/recovery
time
(200
ms/200
ms),
low
detection
limit
1%
stability
durability.
Furthermore,
integrating
LabVIEW
circuit
program
wireless
transmission
technology,
we
have
developed
advanced
intelligent
HMI
capable
monitoring,
training,
remote
