Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 13, 2025
Abstract
Controllable
ice
crystallization
allows
casting
of
isotropic
or
anisotropic
porous
aerogels
to
tailor
versatile
electromagnetic
wave
(EMW)
absorbers.
In
this
paper,
a
multivariate
assembly‐assisted
bidirectional
differ‐speed
freezing
technique
is
developed
prepare
the
sandwiched
nitrogen‐doped
carbon
micro‐foam/MXene/cellulose
nanofiber
aerogel
(NCMF/MXene/CNF
Aerogel,
NCMCA).
The
NCMF,
MXene,
and
CNF
are
assembled
by
alternating
“foam‐flake‐fiber”
through
attractive
interactions,
then
undergo
directional
alignment
under
bi‐directional
cross‐squeezing
crystals,
forming
multi‐stage
structure
containing
integrated
periodic
grid‐like
surface
honeycomb‐like
channels.
high
porosity
results
in
ultra‐light
density
(6.2
mg
cm
−3
)
thermal
insulation
(Δ
T
max
=
140
°C).
Silane
deposition
gives
NCMCA
large
water
contact
angle
(≈133.6°)
for
anti‐icing.
Multi‐component
filling
compressive
strain
synergistically
regulate
electron
transport
charge
polarization
photothermal
conversion,
piezoresistive
sensing,
microwave
absorption.
particular,
compression‐driven
dielectric
coupling
facilitates
dynamic
modulation
EMW
addition,
capable
efficiently
absorbing
far‐field
conditions,
thereby
minimizing
radar
scattering
cross
section.
This
work
provides
novel
structural
design
route
composite
achieve
versatility,
as
well
new
insights
into
microstructural
regulation
mechanism
Materials Chemistry Frontiers,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
Electromagnetic
wave
absorbing
material
(EMWAM)
based
on
metal-organic
framework
(MOF)
has
high
loss
capacity
and
wide
absorption
bandwidth.
This
paper
reviews
recent
research
MOF-based
EMWAM
outlines
current
challenges
future
directions.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 12, 2024
Abstract
Multifunctional
electromagnetic
wave
(EMW)
absorbing
materials
are
attracting
attention
because
of
their
potential
applications
in
medical,
livelihood,
and
military.
In
this
study,
a
pomegranate‐like
nanolayer
featuring
core‐shell
architecture
(PNCS)
is
prepared
using
confinement
strategy.
Introducing
metal
atoms
into
unique
design
(M‐PNCS,
M
=
Mn,
Fe,
Co,
Ni,
Cu)
effectively
tuned
the
response
improved
functions.
The
Mn‐PNCS
composite
exhibited
highest
absorption.
Its
reflection
loss
(
RL
)
reached
−62.39
dB
with
an
effective
absorption
bandwidth
(EAB)
at
1.8
mm
6.0
GHz.
As
charge
transport
capacity
increases,
its
can
be
transformed
shielding,
green
shielding
index
up
to
3.54.
On
basis,
used
fabricate
multifunctional
film
new
strain
sensor.
This
integrated
absorption,
thermal
insulation,
hydrophobicity,
flexibility,
sensing,
thus
showing
for
use
wearable
protective
clothing.
addition,
sensors
simulation
achieved
sensing
through
coupling
effect
between
patterns.
These
findings
demonstrate
that
excellent
material
technical
fields
EMW
devices.
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 1, 2024
The
composite
achieves
high
electromagnetic
shielding
efficiency
and
absorption
coefficient
simultaneously
with
very
low
conductive
filler
content,
realizes
the
switching
of
in
strain
range
30%.
