ACS Applied Nano Materials,
Год журнала:
2024,
Номер
7(9), С. 10860 - 10869
Опубликована: Апрель 25, 2024
Designing
an
absorber
to
mitigate
the
electromagnetic
radiation
pollution
caused
by
rapid
development
of
radio
technology
with
multiple
characteristics,
including
high
reflection
loss
(RL),
broad
absorption
bandwidth,
thinness,
and
low
filling
ratio,
is
crucial
but
challenging.
This
work
prepared
three-dimensional
heterogeneous
MXene/Ni
composites
using
electrostatic
self-assembly
method.
Due
synergistic
effect
dielectric
loss,
magnetic
unique
structure,
obtained
multilayer
composites,
a
ratio
15
wt
%
thickness
only
1.5
mm,
achieved
astonishing
minimum
RL
value
−79.6
dB
effective
bandwidth
(EAB)
3.35
GHz.
Furthermore,
ultrawide
tunable
EAB
12.35
GHz
could
be
in
frequency
range
3.30–15.65
adjusting
matching
samples.
design
interface
structure
provides
practical
strategy
develop
high-performance
next-generation
absorbers.
Nano-Micro Letters,
Год журнала:
2024,
Номер
16(1)
Опубликована: Июнь 17, 2024
Abstract
Considering
the
serious
electromagnetic
wave
(EMW)
pollution
problems
and
complex
application
condition,
there
is
a
pressing
need
to
amalgamate
multiple
functionalities
within
single
substance.
However,
effective
integration
of
diverse
functions
into
designed
EMW
absorption
materials
still
faces
huge
challenges.
Herein,
reduced
graphene
oxide/carbon
foams
(RGO/CFs)
with
two-dimensional/three-dimensional
(2D/3D)
van
der
Waals
(vdWs)
heterostructures
were
meticulously
engineered
synthesized
utilizing
an
efficient
methodology
involving
freeze-drying,
immersing
absorption,
secondary
followed
by
carbonization
treatment.
Thanks
their
excellent
linkage
effect
amplified
dielectric
loss
optimized
impedance
matching,
2D/3D
RGO/CFs
vdWs
demonstrated
commendable
performances,
achieving
broad
bandwidth
6.2
GHz
reflection
−
50.58
dB
low
matching
thicknesses.
Furthermore,
obtained
also
displayed
significant
radar
stealth
properties,
good
corrosion
resistance
performances
as
well
outstanding
thermal
insulation
capabilities,
displaying
great
potential
in
variable
environments.
Accordingly,
this
work
not
only
straightforward
method
for
fabricating
heterostructures,
but
outlined
powerful
mixed-dimensional
assembly
strategy
engineering
multifunctional
protection,
aerospace
other
conditions.
Nano-Micro Letters,
Год журнала:
2023,
Номер
16(1)
Опубликована: Ноя. 6, 2023
Electromagnetic
wave
(EMW)
absorbing
materials
have
an
irreplaceable
position
in
the
field
of
military
stealth
as
well
electromagnetic
pollution
control.
And
order
to
cope
with
complex
environment,
design
multifunctional
and
multiband
high
efficiency
EMW
absorbers
remains
a
tremendous
challenge.
In
this
work,
we
designed
three-dimensional
porous
structure
via
salt
melt
synthesis
strategy
optimize
impedance
matching
absorber.
Also,
through
interfacial
engineering,
molybdenum
carbide
transition
layer
was
introduced
between
selenide
nanoparticles
carbon
matrix
improve
absorption
behavior
The
analysis
indicates
that
number
components
heterogeneous
interfaces
significant
impact
on
performance
absorber
due
mechanisms
such
polarization
conduction
loss
by
engineering.
Wherein,
prepared
MoSe
Abstract
Layered
double
hydroxides
(LDHs)
with
unique
layered
structure
and
atomic
composition
are
limited
in
the
field
of
electromagnetic
wave
absorption
(EMA)
due
to
their
poor
electrical
conductivity
lack
dielectric
properties.
In
this
study,
EMA
performance
anticorrosion
hollow
derived
LDH
composites
improved
by
temperature
control
design
using
ZIF‐8
as
a
sacrifice
template.
Diverse
regulation
modes
result
different
mechanisms
for
EMA.
process,
chemical
reactions
tune
products
construct
refined
optimize
LDHs
loss.
Additionally,
phase
interfaces
generated
components
impedance
matching
enhance
interfacial
polarization.
The
results
show
that
prepared
NCZ
(Ni3ZnC0.7/Co3ZnC@C)
has
minimum
reflection
loss
(RL
min
)
‐58.92
dB
thickness
2.4
mm
maximum
effective
bandwidth
(EAB
max
7.36
GHz
mm.
Finally,
its
special
composition,
sample
exhibits
excellent
This
work
offers
essential
knowledge
designing
engineering
materials
from
metal
organic
framework
(MOF)
cutting‐edge
nanostructures.
