Cellulose
aerogels,
as
a
novel
class
of
carbon-based
materials,
exhibit
immense
potential
in
the
field
microwave
absorption
(MWA)
due
to
their
biocompatibility,
low
density,
unique
porous
structure,
and
tunable
architecture.
However,
development
multi-dimensional
components
with
specialized
heterogeneous
structures,
which
are
based
on
cellulose
remains
significant
challenge.
This
0D/1D/3D
structural
configuration
facilitates
electromagnetic
properties
favorable
impedance
matching.
The
Schottky
contact
at
ZnO/Ni
interface,
particular,
induces
strong
interfacial
polarization,
design
results
multiple
heterointerfaces.
Density
functional
theory
(DFT)
calculations
reveal
that
barrier
causes
band
bending,
facilitating
directed
migration
electrons
interface
formation
an
internal
electric
field,
thus
significantly
accelerating
multipolar
relaxation
process.
As
anticipated,
CCMC/ZnO@Ni
aerogel
exhibits
minimum
reflection
loss
(RLmin)
value
-64.0
dB
13.9
GHz
thickness
2.0
mm,
its
effective
bandwidth
(EAB)
reaches
4.9
GHz.
work
gives
valuable
guidance
inspiration
for
materials
composed
dimensional
gradient
holds
great
application
wave
(EMW)
attenuation.
Nano-Micro Letters,
Год журнала:
2023,
Номер
15(1)
Опубликована: Авг. 25, 2023
The
development
of
wearable
multifunctional
electromagnetic
protective
fabrics
with
multifunctional,
low
cost,
and
high
efficiency
remains
a
challenge.
Here,
inspired
by
the
unique
flower
branch
shape
"Thunberg's
meadowsweet"
in
nature,
nanofibrous
composite
membrane
hierarchical
structure
was
constructed.
Integrating
sophisticated
0D@2D@1D
structures
multiple
heterointerfaces
can
fully
unleash
application
potential
membrane.
targeted
induction
method
used
to
precisely
regulate
formation
site
morphology
metal-organic
framework
precursor,
intelligently
integrate
heterostructures
enhance
dielectric
polarization,
which
improves
impedance
matching
loss
mechanisms
wave
absorbing
materials.
Due
synergistic
enhancement
electrospinning-derived
carbon
nanofiber
"stems",
MOF-derived
nanosheet
"petals"
transition
metal
selenide
nano-particle
"stamens",
CoxSey/NiSe@CNSs@CNFs
(CNCC)
obtains
minimum
reflection
value
(RLmin)
-68.40
dB
at
2.6
mm
maximum
effective
absorption
bandwidth
(EAB)
8.88
GHz
thin
thickness
2.0
filling
amount
only
5
wt%.
In
addition,
multi-component
heterostructure
endow
fibrous
excellent
flexibility,
water
resistance,
thermal
management,
other
properties.
This
work
provides
perspectives
for
precise
design
rational
fabrics.
Nano-Micro Letters,
Год журнала:
2023,
Номер
16(1)
Опубликована: Ноя. 6, 2023
Electromagnetic
wave
(EMW)
absorbing
materials
have
an
irreplaceable
position
in
the
field
of
military
stealth
as
well
electromagnetic
pollution
control.
And
order
to
cope
with
complex
environment,
design
multifunctional
and
multiband
high
efficiency
EMW
absorbers
remains
a
tremendous
challenge.
In
this
work,
we
designed
three-dimensional
porous
structure
via
salt
melt
synthesis
strategy
optimize
impedance
matching
absorber.
Also,
through
interfacial
engineering,
molybdenum
carbide
transition
layer
was
introduced
between
selenide
nanoparticles
carbon
matrix
improve
absorption
behavior
The
analysis
indicates
that
number
components
heterogeneous
interfaces
significant
impact
on
performance
absorber
due
mechanisms
such
polarization
conduction
loss
by
engineering.
Wherein,
prepared
MoSe
Abstract
Layered
double
hydroxides
(LDHs)
with
unique
layered
structure
and
atomic
composition
are
limited
in
the
field
of
electromagnetic
wave
absorption
(EMA)
due
to
their
poor
electrical
conductivity
lack
dielectric
properties.
In
this
study,
EMA
performance
anticorrosion
hollow
derived
LDH
composites
improved
by
temperature
control
design
using
ZIF‐8
as
a
sacrifice
template.
Diverse
regulation
modes
result
different
mechanisms
for
EMA.
process,
chemical
reactions
tune
products
construct
refined
optimize
LDHs
loss.
Additionally,
phase
interfaces
generated
components
impedance
matching
enhance
interfacial
polarization.
The
results
show
that
prepared
NCZ
(Ni3ZnC0.7/Co3ZnC@C)
has
minimum
reflection
loss
(RL
min
)
‐58.92
dB
thickness
2.4
mm
maximum
effective
bandwidth
(EAB
max
7.36
GHz
mm.
Finally,
its
special
composition,
sample
exhibits
excellent
This
work
offers
essential
knowledge
designing
engineering
materials
from
metal
organic
framework
(MOF)
cutting‐edge
nanostructures.
