Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Ноя. 28, 2024
The
lack
of
a
chemical
platform
with
high
spatial
dimensional
diversity,
coupled
the
elusive
multi-scale
amorphous
physics,
significantly
hinder
advancements
in
electromagnetic
wave
absorption
(EWA)
materials.
Herein,
we
present
synergistic
engineering
phenolic
multiple
kinetic
dynamics
and
discrete
crystallization
thermodynamics,
to
elucidate
origin
dielectric
properties
carbon
cascade
effect
during
EWA.
Leveraging
scalability
synthesis,
design
dozens
morphologies
from
bottom
up
combine
in-situ
pyrolysis
establish
nanomaterial
ecosystem
hundreds
Based
on
controlled
crystallization,
nano-curvature
regulation
inversion
symmetry-breaking
structures,
surface
electric
field
enhancement
multi-shell
charge
imbalance
triggers
intense
polarization.
Both
experiments
theories
show
that
each
scale
is
essential,
which
collectively
drives
broadband
(8.46
GHz)
efficient
dissipation
(−54.77
dB)
EWA
performance.
Our
work
nanostructure
can
contribute
uncovering
missing
pieces
physics
research.
This
study
presents
synthesis
absorption.
Heterogeneous
interfacial
engineering
has
garnered
widespread
attention
for
optimizing
polarization
loss
and
enhancing
the
performance
of
electromagnetic
wave
absorption.
A
novel
Kirkendall
effect-assisted
electrostatic
self-assembly
method
is
employed
to
construct
a
metal-organic
framework
(MOF,
MIL-88A)
decorated
with
Ni-Fe
layered
double
hydroxide
(LDH),
forming
multilayer
nano-cage
coated
Ti
Nano-Micro Letters,
Год журнала:
2024,
Номер
16(1)
Опубликована: Июнь 11, 2024
Abstract
The
exploration
of
novel
multivariate
heterostructures
has
emerged
as
a
pivotal
strategy
for
developing
high-performance
electromagnetic
wave
(EMW)
absorption
materials.
However,
the
loss
mechanism
in
traditional
is
relatively
simple,
guided
by
empirical
observations,
and
not
monotonous.
In
this
work,
we
presented
semiconductor–semiconductor–metal
heterostructure
system,
Mo–MXene/Mo–metal
sulfides
(metal
=
Sn,
Fe,
Mn,
Co,
Ni,
Zn,
Cu),
including
semiconductor
junctions
Mott–Schottky
junctions.
By
skillfully
combining
these
distinct
functional
components
(Mo–MXene,
MoS
2
,
metal
sulfides),
can
engineer
multiple
heterogeneous
interface
with
superior
capabilities,
broad
effective
bandwidths,
ultrathin
matching
thickness.
successful
establishment
gives
rise
to
built-in
electric
field
that
intensifies
electron
transfer,
confirmed
density
theory,
which
collaborates
dielectric
polarization
mechanisms
substantially
amplify
EMW
absorption.
We
detailed
synthesis
series
featuring
both
semiconductor–semiconductor
semiconductor–metal
interfaces.
achievements
were
most
pronounced
Mo–MXene/Mo–Sn
sulfide,
achieved
remarkable
reflection
values
−
70.6
dB
at
thickness
only
1.885
mm.
Radar
cross-section
calculations
indicate
MXene/Mo–metal
have
tremendous
potential
practical
military
stealth
technology.
This
work
marks
departure
from
conventional
component
design
limitations
presents
pathway
creation
advanced
MXene-based
composites
potent
capabilities.
Nano-Micro Letters,
Год журнала:
2024,
Номер
17(1)
Опубликована: Сен. 27, 2024
Abstract
Currently,
the
demand
for
electromagnetic
wave
(EMW)
absorbing
materials
with
specific
functions
and
capable
of
withstanding
harsh
environments
is
becoming
increasingly
urgent.
Multi-component
interface
engineering
considered
an
effective
means
to
achieve
high-efficiency
EMW
absorption.
However,
modulation
has
not
been
fully
discussed
great
potential
in
field
In
this
study,
multi-component
tin
compound
fiber
composites
based
on
carbon
(CF)
substrate
were
prepared
by
electrospinning,
hydrothermal
synthesis,
high-temperature
thermal
reduction.
By
utilizing
different
properties
substances,
rich
heterogeneous
interfaces
are
constructed.
This
effectively
promotes
charge
transfer
enhances
interfacial
polarization
conduction
loss.
The
SnS/SnS
2
/SnO
/CF
abundant
have
exhibit
excellent
absorption
at
a
loading
50
wt%
epoxy
resin.
minimum
reflection
loss
(RL)
−
46.74
dB
maximum
bandwidth
5.28
GHz.
Moreover,
composite
coatings
exhibited
long-term
corrosion
resistance
Q235
steel
surfaces.
Therefore,
study
provides
strategy
design
complex
environments.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Май 10, 2024
Abstract
Polarization
at
interfaces
is
an
important
loss
mechanism
for
electromagnetic
wave
(EMW)
attenuation,
though
the
motion
behavior
of
carriers
in
composed
different
types
conductors
has
yet
to
be
investigated.
Tuning
phase
structure
transition
metal
dichalcogenides
(TMDs)
MS
2
(M
=
Mo,
V,
W)
by
organics
small
molecule
intercalation
achieve
modulation
interfacial
effective
strategy,
where
1T‐MS
exhibits
metallic
properties
and
2H‐MS
semiconducting
properties.
To
exclude
contribution
intrinsic
TMDs
materials,
three
(MoS
,
VS
WS
),
which
also
possess
transitions,
are
Among
them,
composite
excellent
EMW
absorption
performance
under
synergistic
effect
polarization
conduction
loss.
1T‐MoS
/MOF‐A
best
with
RL
min
−61.07
dB
a
thickness
3.0
mm
EAB
7.2
GHz
2.3
mm.
The
effectiveness
using
1T‐phase
2H‐phase
demonstrated,
analysis
carrier
during
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 27, 2024
Abstract
By
manipulating
their
asymmetric
electronic
spin
states,
the
unique
structures
and
unsaturated
coordination
environments
of
single
atoms
can
be
effectively
harnessed
to
control
magnetic
properties.
In
this
research,
first
investigation
is
presented
into
regulation
properties
through
states
atoms.
Magnetic
single‐atom
one‐dimensional
materials,
M‐N‐C/ZrO
2
(M
=
Fe,
Co,
Ni),
with
varying
are
design
synthesize
based
on
orbital
structure
model.
The
SAs
3
d
electron
composite
M‐N‐C
modulates
magneto
physical
triggers
a
natural
resonance
loss,
which
achieves
controllable
tuning
effective
absorption
band
under
low‐frequency
conditions.
minimum
reflection
loss
(
RL
min
)
reach
‐69.71
dB,
bandwidth
EAB
ratio
as
high
91%
(2–18
GHz).
current
work
provides
path
toward
achieving
modulation
electromagnetic
wave
bands
by
exploring
mechanism
atomic
even
level
interactions
influence
modulation.
Nano-Micro Letters,
Год журнала:
2024,
Номер
17(1)
Опубликована: Окт. 16, 2024
Developing
advanced
stealth
devices
to
cope
with
radar-infrared
(IR)
fusion
detection
and
diverse
application
scenarios
is
increasingly
demanded,
which
faces
significant
challenges
due
conflicting
microwave
IR
cloaking
mechanisms
functional
integration
limitations.
Here,
we
propose
a
multiscale
hierarchical
structure
design,
integrating
wrinkled
MXene
shielding
layer
flexible
Fe
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 5, 2024
Abstract
Hierarchical
microarchitecture
engineering
is
a
state‐of‐the‐art
approach
to
designing
aerogel
electromagnetic
(EM)
wave
absorbers,
offering
huge
potential
in
improving
EM
energy
dissipation.
However,
the
intrinsic
feedback
mechanism
regarding
specific
influence
of
each
parameter
on
properties
not
comprehensively
revealed,
making
it
challenging
fully
utilize
aerogels
achieve
superior
absorption
performance.
Herein,
range
MXene/rGO‐based
with
multilevel
hierarchical
configurations
are
fabricated
by
magnetic
field‐guided
strategy.
Leveraging
growth
thermodynamics
effects
under
field
and
bridging
effect
between
adjacent
rGO
units,
three
models
(lamellae
ordering,
interlayer
spacing,
layer
thickness)
constructed
aerogels.
Remarkably,
progressively
improve
reflection
loss
(
RL
),
effective
bandwidth
(EAB),
matching
thickness
enhancing
dielectric
loss,
decoupling
attenuation‐impedance
matching,
adjusting
power
density,
respectively.
Consequently,
exhibit
stepwise
enhancement
performance,
achieving
−64.6
dB
broad
EAB
7.0
GHz
at
1.8
mm
thickness,
surpassing
alternative
other
configurations.
This
work
elucidates
synergistic
multi‐effect
dissipation
waves
aerogels,
providing
insights
for
advanced
absorbers
through
diverse
strategies.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 7, 2024
Abstract
Construction
of
built‐in
electric
field
(BIEF)
in
nanohybrids
has
been
demonstrated
as
an
efficacious
strategy
to
boost
the
dielectric
loss
by
facilitating
oriented
transfer
and
transition
charges,
thus
optimizing
electromagnetic
wave
absorption
property.
However,
specific
influence
BIEF
on
interface
polarization
needs
explore
thoroughly
strength
should
be
further
augmented.
Herein,
several
systems
incorporated
Mott–Schottky
heterojunctions
hollow
structures
are
designed
constructed,
where
bimetallic
zeolitic
imidazolate
framework
employed
derive
Cu‐ZnO
heterojunctions,
hierarchical
enriched
introducing
structure
reduced
graphene
oxide.
The
well‐established
“double”
verified
theoretical
calculation
engineering
can
regulate
conductivity,
enhance
relaxation
effectively.
Especially,
there
always
coexisted
both
enhanced
charge
separation
reversed
distribution
this
BIEF,
boosting
polarization.
Attributing
synergy
well‐matched
impedance
amplified
loss,
obtained
hybrids
exhibited
superior
(reflection
−46.29
dB
ultra‐wide
effective
bandwidth
7.6
GHz
at
only
1.6
mm).
This
work
proves
innovative
model
for
dissecting
mechanisms
pioneers
a
novel
advanced
absorbers
through
enhancing
BIEF.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 1, 2024
Abstract
Nano‐heterointerface
engineering
has
been
demonstrated
to
influence
interfacial
polarization
by
expanding
the
interface
surface
area
and
constructing
a
built‐in
electric
field
(BEF),
thus
regulating
electromagnetic
(EM)
wave
absorption.
However,
dielectric‐responsive
mechanism
of
BEF
needs
further
exploration
enhance
comprehensive
understanding
polarization,
particularly
in
terms
quantifying
optimizing
strength.
Herein,
“1D
expanded
2D
structure”
carbon
matrix
is
designed,
semiconductor
ZnIn
2
S
4
(ZIS)
introduced
construct
carbon/ZIS
heterostructure.
The
cross‐dimensional
nano‐heterointerface
design
increases
coupling
sites
induces
an
increase
Fermi
level
difference
on
both
sides
modulate
distribution
charges,
thereby
strengthening
at
interface.
synergistic
effect
leads
excellent
EM
absorption
performance
(minimum
reflection
coefficient
RC
min
=
−67.4
dB,
effective
bandwidth
EAB
6.0
GHz)
This
work
introduces
general
modification
model
for
enhancing
inspires
development
new
strategies
functional
materials
with
unique
electronic
behaviors
through
heterointerface
engineering.