Nano-Micro Letters,
Год журнала:
2022,
Номер
14(1)
Опубликована: Фев. 25, 2022
Abstract
The
employment
of
microwave
absorbents
is
highly
desirable
to
address
the
increasing
threats
electromagnetic
pollution.
Importantly,
developing
ultrathin
absorbent
acknowledged
as
a
linchpin
in
design
lightweight
and
flexible
electronic
devices,
but
there
are
remaining
unprecedented
challenges.
Herein,
self-assembly
VS
4
/rGO
heterostructure
constructed
be
engineered
through
strategies
architecture
interface
engineering.
microarchitecture
heterointerface
can
regulated
by
generation
nanorods
anchored
on
rGO,
which
effectively
modulate
impedance
matching
attenuation
constant.
maximum
reflection
loss
2VS
/rGO40
reach
−
43.5
dB
at
14
GHz
with
constant
approaching
0.98
187,
respectively.
effective
absorption
bandwidth
4.8
achieved
an
thickness
1.4
mm.
far-reaching
comprehension
performance
explicitly
unveiled
experimental
results
theoretical
calculations.
Microarchitecture
synergistically
inspire
multi-dimensional
advantages
enhance
dipole
polarization,
interfacial
multiple
reflections
scatterings
microwaves.
Overall,
engineering
pave
way
for
achieving
enhanced
materials.
Nano-Micro Letters,
Год журнала:
2022,
Номер
14(1)
Опубликована: Июль 5, 2022
Electromagnetic
cooperative
strategy
has
been
presented
as
a
mainstream
approach
that
can
effectively
optimize
the
matching
thickness
of
dielectric
loss
dominant
system.
However,
it
is
still
challenging
for
dielectric-magnetic
coexisting-type
absorber
to
develop
electromagnetic
wave
(EMW)
performance
with
ultra-low
(≤
1
mm).
Breaking
limitation
traditional
response
at
microscopic/mesoscopic
scale,
ficus
microcarpa-like
magnetic
aerogel
macroscopical
effect
was
fabricated
through
highly
oriented
self-assembly
engineering.
The
Ni
chains
unique
macroscopic
morphology
(~
cm
in
length)
were
achieved
via
special
field-induced
growth.
Strong
coupling
observed
confirmed
by
micromagnetic
simulation.
deductive
calculation
validates
maintaining
high
value
parameters
frequencies
prerequisites
ultrathin
absorber.
networks
uninterrupted
and
dual
pathways
spread
entire
skeleton,
resulting
impressive
permittivity
even
frequencies.
Consequently,
exhibits
remarkable
EMW
an
mm.
Thus,
based
on
modulation
parameters,
this
work
proposed
ordered
structure
useful
suitable
achieving
absorbers.
Advanced Functional Materials,
Год журнала:
2022,
Номер
32(39)
Опубликована: Июль 19, 2022
Abstract
Electronic
devices
have
brought
huge
convenience
to
daily
lives;
however,
a
large
amount
of
electromagnetic
radiation
pollution
is
generated.
Therefore,
an
urgent
demand
for
wave
absorbing
materials
featuring
“low
thickness,
wide
frequency
band
and
strong
absorption”
put
forward.
Here,
strategy
introducing
conductive
carbon
nanotubes
(CNTs)
network
into
CH
3
NH
PbI
(MAPbI
)
developed
construct
system.
As
the
absorption
center,
MAPbI
dominates
via
electric
polarization
process.
Meanwhile,
CNTs
efficient
network,
which
supply
transmission
path
free
electrons
inside
crystals
enhance
conduction
loss.
In
comparison
with
insulated
formed
by
MoO
/MAPbI
,
it
speculated
that
broadened
bandwidth
reduced
thickness
originate
from
CNTs.
result,
when
7.7%
(mass
ratio),
reflection
loss
strength
/CNTs
reaches
−57.71
dB
at
13.96
GHz
corresponding
effective
6.32
(11.68–18.00
GHz),
absorber
1.96
mm.
The
method
constructing
proves
great
potential
hybrid
perovskite
in
field
provides
feasible
strategies
regulation
dielectric
loss‐type
materials.
