Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 25, 2025
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
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(25), P. 32773 - 32783
Published: June 12, 2024
The
development
of
new
electromagnetic
absorbing
materials
is
the
main
strategy
to
address
radiation.
Once
traditional
wave-absorbing
are
prepared,
it
difficult
dynamically
change
their
performance.
Facing
complexity
information
age
and
rapid
modern
radar,
significant
develop
intelligent
modulation
materials.
Here,
CNTs/VO2/ANF
composite
aerogels
with
dynamic
frequency
tunability
switchable
absorption
on/off
were
synthesized.
Based
on
phase
behavior
VO2,
degree
polarization
interfacial
effects
multiple
heterogeneous
interfaces
between
VO2
CNTs
aramid
nanofibers
(ANFs)
modulated
at
different
temperatures.
With
increase
in
temperature
(from
25
200
°C),
maximum
tunable
aerogel
from
12.24
8.56
GHz
X-band,
intensity
remains
stable.
effective
switching
bandwidth
(ΔEAB)
3.70
GHz.
This
study
provides
insights
into
wave
performance
paves
way
for
temperature-driven
application
absorbers.
