Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 26, 2024
Abstract
Excellent
mechanical
flexibility,
thermal
conductivity,
and
microwave
absorption
are
essential
properties
for
multifunctional
materials
applied
in
next‐generation
wearable
electronics.
However,
it
remains
a
great
challenge
to
improve
the
incompatibility
among
these
properties.
Herein,
high‐quantity
V
2
O
5
@NaV
6
15
@PPy
core‐shell
nanofibers
(CSNFs)
synthesized
via
simple
dissolution‐recrystallization
situ
redox
polymerization
process.
Owing
regular,
periodic,
stable
sensing
signals,
their
membrane
can
serve
as
strain
sensor
accurately
detect
word
pronunciation
body
movement.
Their
TPU
films
possess
high
strength,
excellent
hydrophobicity,
large
conductivity
(3.56
W
m
−1
K
);
7
wt.%
load.
Besides,
CSNFs
exhibit
efficient
wide‐band
(8.56
GHz)
RCS
reduction
(24.41
dBm
)
at
low
load
(7
wt.%),
outperforming
most
other
absorbers.
The
boosted
performance
be
ascribed
1D
structure
with
multiple
heterostructures
abundant
defects,
which
generate
conductive
loss,
diverse
polarizations,
scattering,
cooperative
heat
transfer
of
electrons
phonons.
Further
analyses
reveal
dielectric
loss
mechanisms
based
on
density
states,
electric
field
distribution,
phonon
states.
Overall,
promising
applications
sensing,
management,
EM
protection,
Radar
stealth,
particularly
extreme
environments.
Advanced Sustainable Systems,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 15, 2025
Abstract
In
this
study,
a
sustainable
biomass‐derived
structure
from
Harmal
seed
peganum
(HSP)
is
used
as
substrate
to
facilitate
the
growth
of
carbon
nanotubes
(CNTs)
by
Ni
catalyst.
The
unique
toutia‐like
morphology
implanted
coated
with
polydopamine
(PDA)
via
an
in
situ
polymerization
process.
Persian
turpentine
(PT)
chosen
novel,
green,
sustainable,
practical,
and
polarizable
medium,
selected
capable
microwave
absorbing
medium.
influence
interfacial
interaction
on
performance
carefully
dissected
addition
polyvinyl
alcohol
(PVA).
With
ultrathin
thickness
200
µm,
CNT‐implanted
sample
PDA
enhanced
PT
(HSP/Ni‐CNT/PDA/PT)
achieved
maximum
RL
−79.88
dB
at
18.22
GHz
efficient
bandwidth
7.17
GHz.
Interestingly
architected
totally
shields
≥95%
k‐band
frequencies.
promoted
impedance
matching
other
effective
mechanisms
HSP/Ni‐CNT/PDA/PVA/PT
HSP/Ni‐CNT/PDA/polyethylene
(PE)
nanocomposites
lead
highest
−92.87
25.39
0.90
mm
broadest
wide
8.50
1.20
mm,
respectively.
Nano-Micro Letters,
Год журнала:
2025,
Номер
17(1)
Опубликована: Фев. 6, 2025
Abstract
Herein,
a
novel
Janus-structured
multifunctional
membrane
with
integrated
electromagnetic
interference
(EMI)
shielding
and
personalized
thermal
management
is
fabricated
using
shear-induced
in
situ
fibrillation
vacuum-assisted
filtration.
Interestingly,
within
the
polytetrafluoroethylene
(PTFE)-carbon
nanotube
(CNT)-Fe
3
O
4
layer
(FCFe),
CNT
nanofibers
interweave
PTFE
fibers
to
form
stable
“silk-like”
structure
that
effectively
captures
Fe
particles.
By
incorporating
highly
conductive
MXene
layer,
FCFe/MXene
(FCFe/M)
exhibits
excellent
electrical/thermal
conductivity,
mechanical
properties,
flame
retardancy.
Impressively,
benefiting
from
rational
regulation
of
component
proportions
design
Janus
structure,
FCFe/M
thickness
only
84.9
µm
delivers
outstanding
EMI
effectiveness
44.56
dB
X-band,
normalized
specific
SE
reaching
10,421.3
cm
2
g
−1
,
which
attributed
“absorption-reflection-reabsorption”
mechanism.
Furthermore,
demonstrates
low-voltage-driven
Joule
heating
fast-response
photothermal
performance.
Under
stimulation
V
voltage
an
optical
power
density
320
mW
−2
surface
temperatures
membranes
can
reach
up
140.4
145.7
°C,
respectively.
In
brief,
anti-electromagnetic
radiation
temperature
attractive
candidate
for
next
generation
wearable
electronics,
compatibility,
visual
heating,
thermotherapy,
military
aerospace
applications.
Polymers for Advanced Technologies,
Год журнала:
2025,
Номер
36(2)
Опубликована: Фев. 1, 2025
ABSTRACT
The
increasing
proliferation
of
electronic
devices
and
advanced
communication
networks
has
resulted
in
heightened
electromagnetic
interference
(EMI),
posing
significant
challenges
both
technological
environmental
contexts.
Traditional
EMI
shielding
materials,
such
as
metals
composite
coatings,
offer
limited
adaptability
are
unable
to
meet
the
dynamic
demands
modern
systems.
Recent
advancements
have
introduced
smart
stimuli‐responsive
materials
for
shielding,
which
provide
real‐time
tunability,
thereby
addressing
limitations
conventional
static
solutions.
These
leverage
various
mechanisms—such
compressive
tensile
strains,
phase
transitions,
shape
memory
effects,
responses
chemical
agents,
humidity,
or
crossover
angle
changes—to
dynamically
adjust
their
effectiveness
(EMI‐SE).
This
review
provides
an
in‐depth
analysis
recent
progress
technologies,
highlighting
tunable
mechanisms,
material
compositions,
applications.
Furthermore,
it
discusses
existing
potential
future
research
directions
required
advancement
this
technology.
By
enabling
environments,
present
a
promising
solution
telecommunications,
wearable
electronics,
aerospace,
defense
sectors.
