Abstract
The
integration
of
macroscopic
and
microscopic
structural
designs
plays
a
crucial
role
in
developing
high‐performance
electromagnetic
wave
(EMW)
absorber
devices.
In
this
work,
an
innovative
metamaterial
based
on
multi‐scale
design
is
introduced
to
address
the
challenge
narrowband
absorption.
Specifically,
at
scale,
highly
efficient
absorbing
material
(FCIP@SiO
2
@Ppy)
synthesized
through
integrated
optimization
strategy,
which
functional
layers
are
uniquely
combined
maximize
performance.
By
leveraging
heterogeneous
interfaces,
establishes
magneto‐electric
coupling
network,
ensuring
excellent
impedance
matching
significantly
enhancing
EMW
absorption
capacity
material.
Notably,
achieves
record
low
reflection
loss
(RL)
−66.66
dB
9.95
GHz
with
broad
bandwidth
5.92
(RL
≤
−10
dB),
subsequently
used
fabricate
device.
Building
upon
this,
inspired
by
compound
eye
structure
arthropods,
groundbreaking
proposed.
Simulations
reveal
achievement
ultra‐wideband
(2.75–18
GHz)
remarkably
thin
thickness
just
12
mm.
These
pioneering
results
present
effective
strategies
for
development
next‐generation
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 9, 2024
Abstract
In
non‐metallic
atom‐doped
carbonaceous
materials,
the
disparity
in
electronegativity
between
doped
constituents
and
carbon
atoms
predetermines
bonding
topology
of
covalent
bonds
distribution
electron
density.
This,
consequently,
influences
polarization
transport
behavior
within
domain
electromagnetic
wave
attenuation
attributes
material.
However,
influence
formed
by
doping
with
weakly
electronegative
on
density
distribution,
effects,
remains
uncharted.
To
address
this
deficiency,
study
fabricates
a
porous
material
(NCP)
incorporates
boron‐doped
to
form
tunable
B─C
configurations
(B‐NCP).
By
modulating
configuration
proportion,
it
is
feasible
achieve
synergistic
optimization
conductive
loss
B‐NCP
specimen.
The
optimized
prototype
‐1200
sample
displays
exceptionally
efficient
absorption
capabilities
minimum
reflection
(RL
min
)
−52.03
dB
an
effective
bandwidth
(EAB)
5.36
GHz.
This
presents
conscientious
model
for
comprehending
mechanisms
associated
atom
carbon‐based
wave‐absorbing
materials.
