Abstract
With
the
rapid
advancement
of
5G
technologies
and
electronic
devices,
there
is
a
growing
demand
for
microwave
absorbing
materials,
especially
those
effective
in
low
frequency
bands
(2–8
GHz),
making
it
an
essential
requirement.
In
recent
years,
many
innovative
absorbers
have
been
developed
absorption,
with
carbon/magnetic
composite
materials
becoming
particularly
promising
due
to
their
various
loss
mechanisms
optimized
impedance
matching
characteristics
over
wide
range.
However,
currently
lack
comprehensive
review
that
summarizes
findings
on
absorbers.
This
article
thoroughly
examines
current
research
efficient
absorption
performance
low‐frequency
S
C
bands.
It
provides
detailed
discussion
these
materials.
Furthermore,
design
strategies,
synthesis
techniques,
microstructure
relationship,
attenuation
are
summarized.
Lastly,
challenges
future
outlook
addressed.
aspires
provide
new
insights
into
designing
synthesizing
accomplish
thereby
promoting
practical
applications.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(37)
Опубликована: Март 22, 2024
Abstract
MXene,
a
highly
regarded
material,
has
garnered
significant
attention
within
the
electromagnetic
wave
(EMW)
absorption
field.
However,
practical
application
of
MXene
is
limited
in
harsh
environments.
Herein,
magic
technique
strategy
intercalation
growth
nucleation
engineering
employed
to
prepare
multifunctional
MXene‐based
EMW
materials.
By
regularly
introducing
different
metal
ions
between
layers
an
ultrathin
absorber
can
be
achieved
by
annealing
after
reacting
specific
positions.
The
synthesized
MCFC‐69‐8
shows
hydrophobicity
properties
and
exhibits
large
charge‐transfer
resistance
18112
Ω
cm
2
with
low
corrosion
rate
rate,
indicating
good
anti‐corrosion
property.
Through
applying
series
mathematical
methods,
25%
relaxation
polarization
loss
75%
conduction
loss,
its
time
linked
type
resulting
effective
bandwidth
(EAB)
4.9
GHz
ultra‐thin
optimal
matching
thickness
1.48
mm.
Finally,
built
using
CST
attain
ultrabroad
EAB
covering
2–18
GHz.
This
not
only
simplifies
process
but
also
achieves
high‐performance
absorber,
providing
valuable
perception
for
realizing
thinner
absorbers
future.
Abstract
The
fabrication
of
carbon
nanocoil
(CNC)‐based
chiral‐dielectric‐magnetic
trinity
composites
holds
great
significance
in
low‐frequency
microwave
absorption
fields.
However,
it
is
not
clear
that
how
the
different
magnetic
systems
affect
and
frequency
responses
composites.
Herein,
four
types
metals,
FeCo,
CoNi,
FeNi,
FeCoNi,
are
selected
to
be
combined
with
chiral
templates
respectively,
resulting
similar
morphology.
CNC
endow
all
excellent
dielectric
loss.
Further
permeability
analysis
micro‐magnetic
simulation
confirm
response
region
can
well
adjusted
by
changing
specific
resonance
modes
domain
motion.
Due
synergistic
effect
between
magnetism,
chirality,
dielectricity,
FeNi‐based
exhibit
best
performance.
minimum
RL
−60.7
dB
achieved
at
6.7
GHz
an
ultra‐low
filling
ratio
10%,
EAB
value
extended
3.7
GHz.
This
study
provides
further
guidelines
for
design
absorption.
