Vertically aligned hollow Ag@Ni tubes for synergistic EMI shielding and enhancing the thermal conductivities of epoxy composites
Applied Materials Today,
Год журнала:
2025,
Номер
44, С. 102741 - 102741
Опубликована: Апрель 22, 2025
Язык: Английский
High‐Coordination Engineering of Asymmetrical Cerium Single‐Atoms for Advanced Electromagnetic Wave Absorption
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 2, 2025
Abstract
Electromagnetic
wave
(EMW)
absorbers
are
critical
for
addressing
electromagnetic
pollution
and
enabling
stealth
technologies.
While
metal
single‐atom
(M‐SA)
materials
have
shown
potential
EMW
absorption,
their
dielectric
performance
is
often
constrained
by
symmetric
low‐coordination
configurations.
In
this
study,
a
thiourea‐mediated
pyrolysis
strategy
developed
to
construct
cerium
single‐atoms
with
asymmetric
high‐coordination
environments
(CeN
4
O
S
1.5
).
Through
combination
of
density
functional
theory
calculations
experimental
validation,
it
found
that
the
Ce‐SAs
can
induce
more
metal‐nonmetal
dipoles
create
novel
nonmetal‐nonmetal
compared
M‐N
configurations,
which
significantly
enhance
loss
absorption
capabilities.
Additionally,
CeN
‐based
film
exhibits
6.8
GHz
effective
bandwidth
at
mere
2.3
mm
thickness,
alongside
excellent
multifunctional
properties
such
as
flexibility,
thermal
insulation,
flame
retardancy.
This
work
advances
understanding
coordination
environment's
impact
on
provides
an
efficient
design
next‐generation
absorbers.
Язык: Английский
Few-Layered MXene Modulating In Situ Growth of Carbon Nanotubes for Enhanced Microwave Absorption
Molecules,
Год журнала:
2025,
Номер
30(7), С. 1625 - 1625
Опубликована: Апрель 5, 2025
MXene
is
widely
used
in
the
fields
of
microwave
absorption
and
electromagnetic
shielding
to
balance
pollution
with
development
communication
technologies
human
health,
due
its
excellent
surface
functional
groups
tunable
electronic
properties.
Although
pure
multilayered
has
an
accordion-like
structure,
weak
dielectric
loss
lack
magnetic
result
poor
performance.
Here,
we
propose
a
strategy
for
catalytic
growth
CNTs
by
electrophoretic
deposition
adsorbed
metal
ions,
leading
successful
preparation
Ni-MWCNTs/Ti3C2Tx
composites
“layer-by-layer”
achieved
through
situ
regulated
CNTs.
By
introducing
dielectric–magnetic
synergy
improve
impedance
matching
conditions,
regulating
diameter
alter
parameters
Ni-MWCNTs/Ti3C2Tx,
2-Ni-MWCNTs/Ti3C2Tx
composite
achieves
best
reflection
(RL)
value
−44.08
dB
effective
bandwidth
1.52
GHz
at
only
2.49
mm
thickness.
This
unique
layered
structure
regulation
provide
new
opportunities
few-layered
composites.
Язык: Английский
Hierarchically building flame retardant and flexible electromagnetic interference shielding composites with tunable mechanism
Journal of Material Science and Technology,
Год журнала:
2025,
Номер
239, С. 39 - 54
Опубликована: Апрель 28, 2025
Язык: Английский
A Gradient Structure With Lattice Cores for Wide‐Band and Wide‐Angle Wave Transmission
Microwave and Optical Technology Letters,
Год журнала:
2025,
Номер
67(6)
Опубликована: Июнь 1, 2025
ABSTRACT
This
study
proposes
a
symmetric
gradient
lattice
structure.
The
S‐parameter
inversion
method
is
applied
to
investigate
the
equivalent
electromagnetic
properties
of
Then,
methodology
for
design
structure
derived,
whereby
complex
transformed
into
simple
multilayer
impedance
transformer.
3D
printing
technology
adopted
fabricate
samples
verify
effectiveness
proposed
method.
Results
show
that
designed
exhibits
superior
transmission
performance,
achieving
minimum
coefficient
−1
dB
across
wide
bandwidth
5.8‐24.8
GHz
and
angular
range
up
60°
both
TE
TM
polarizations.
Язык: Английский