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
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: July 5, 2024
Abstract
The
combination
between
macroscopic
structure
designs
and
microscopic
material
offers
tremendous
possibilities
for
the
development
of
advanced
electromagnetic
wave
(EMW)
absorbers.
Herein,
we
propose
a
metamaterial
design
to
address
persistent
challenges
in
this
field,
including
narrow
bandwidth,
low–frequency
bottlenecks,
and,
particularly,
urgent
issue
robustness
(i.e.,
oblique,
polarized
incidence).
Our
absorber
features
semiconductive
metal-organic
framework/iron
2D/2D
assembly
(CuHT–FCIP)
with
abundant
crystal/crystal
heterojunctions
strong
magneto-electric
coupling
networks.
This
achieves
remarkable
EMW
absorption
across
broad
range
(2
40
GHz)
at
thickness
just
9.3
mm.
Notably,
it
maintains
stable
performance
against
oblique
incidence
(within
75°)
polarizations
(both
transverse
electric
magnetic).
Furthermore,
demonstrates
high
specific
compressive
strength
(201.01
MPa·cm
3
·g
−1
)
low
density
(0.89
g·cm
−3
).
advancement
holds
promise
developing
robust
absorbers
superior
performance.
ACS Nano,
Journal Year:
2024,
Volume and Issue:
18(4), P. 3636 - 3650
Published: Jan. 16, 2024
Microwave
thermotherapy
(MWT)
has
shown
great
potential
in
cancer
treatment
due
to
its
deep
tissue
penetration
and
minimally
invasive
nature.
However,
the
poor
microwave
absorption
(MA)
properties
of
thermal
sensitizer
medical
frequency
band
significantly
limit
effect
MWT
then
weaken
therapeutic
efficacy.
In
this
paper,
a
Ni-based
multilayer
heterointerface
nanomissile
MOFs-Ni-Ru@COFs
(MNRC)
with
improved
MA
performance
desired
via
introducing
magnetic
loss
dielectric
is
developed
for
MWT-based
treatment.
The
loading
Ni
nanoparticle
MNRC
mediates
loss,
band.
formed
by
nanoengineering
induces
significant
interfacial
polarization,
increasing
enhancing
generated
performance.
Moreover,
strong
range
not
only
enhances
MW
but
also
facilitates
electron
energy
transfer,
generating
reactive
oxygen
species
(ROS)
at
tumor
sites
mediate
dynamic
therapy
(MDT).
strategy
strengthening
improve
MWT-MDT
provides
direction
expanding
clinical
application
ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(9), P. 10860 - 10869
Published: April 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.
