Advanced Engineering Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 20, 2024
As
the
electronic
industry
continues
to
progress,
there
is
a
parallel
increase
in
demand
of
materials
for
advanced
electromagnetic
interference
(EMI)
shielding.
A
hybrid
approach
introduced
by
combining
3D
geometrical
structure
with
integration
radar‐absorbing
(RAMs)
develop
absorptive
materials.
Present
study
involves
fabrication
polylactic
acid‐based
pyramidal
honeycomb
structures
using
printing
technology,
followed
electroless
silver
plating
and
infusion
Fe
3
O
4
/epoxy
composite.
These
developed
structures/materials
test
comprehensive
within
frequency
range
8.2–12.4
GHz
(X‐band)
free
space,
waveguide
methods,
focusing
on
both
properties
RAM
EMI
shielding
performance
structures.
Experimental
results
showcase
exceptional
potential
fabricated
structures,
demonstrating
efficient
up‐to
−55
dB,
equivalent
99.999%
attenuation
EM
waves.
Particularly
noteworthy
dominant
role
absorption
as
primary
mechanism,
evidenced
more
than
99%
(−20
dB)
across
entire
tested
spectrum.
Soft Science,
Journal Year:
2025,
Volume and Issue:
5(1)
Published: Jan. 22, 2025
With
the
continuous
development
of
small
and
medium-sized
electronic
devices,
which
bring
convenience
to
people’s
lives,
electromagnetic
wave
(EMW)
pollution
has
emerged
as
a
significant
issue.
The
materials
with
interference
(EMI)
shielding
capabilities
for
protection
against
harmful
radiation
plays
vital
role.
Currently,
wide
range
multifunctional,
lightweight
EMI
have
been
created
address
various
environmental
requirements.
However,
single
material
difficult
meet
requirements
high-speed
transmission
equipment
because
when
such
devices
operate
at
high
speeds,
they
typically
generate
elevated
temperatures,
excessive
further
exacerbates
heat
accumulation,
reducing
both
efficiency
lifespan.
Therefore,
thermal
management
is
essential
lower
operating
temperatures
ensure
optimal
performance.
Phase
change
(PCMs)
are
known
storing
large
amount
energy,
potential
in
management,
so
flexible
phase
composites
(PCCs)
emerged.
This
review
provides
detailed
examination
based
on
fillers,
PCMs
latest
advancements
developing
new
PCCs.
Finally,
we
suggest
some
research
directions
PCCs,
hoping
contribute
rapid
advancement
next-generation
electronics,
human
artificial
intelligence.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 16, 2025
Abstract
The
interaction
of
very
low
frequency
(VLF)
and
extremely
(ELF)
electromagnetic
waves
with
nanocomposites
is
rarely
explored.
It
demonstrated
that
low‐dimensional
electrically
conducting
fillers
are
able
to
shield
long
wavelengths,
provided
they
form
extended
conduction
paths
through
percolation.
Other
mechanisms
synergistically
augment
the
shielding
high
frequencies,
such
as
skin
effect,
interfacial
polarization,
multiple
internal
scattering,
have
insignificant
effects
in
low‐frequency
range.
In
this
regard,
aspect
ratio
1D
conductors
having
lowest
percolation
thresholds
provide
best
performance,
both
gravimetrically
volumetrically.
Shielding
these
materials
observed
majorly
occur
mostly
reflection,
hence,
can
be
employed
for
guiding
frequencies.
correlation
proposed
estimate
effectiveness
based
on
conductivity
enables
convenient
material
design
modulation.
Polymers for Advanced Technologies,
Journal Year:
2025,
Volume and Issue:
36(2)
Published: Feb. 1, 2025
ABSTRACT
The
increasing
proliferation
of
electronic
devices
and
advanced
communication
networks
has
resulted
in
heightened
electromagnetic
interference
(EMI),
posing
significant
challenges
both
technological
environmental
contexts.
Traditional
EMI
shielding
materials,
such
as
metals
composite
coatings,
offer
limited
adaptability
are
unable
to
meet
the
dynamic
demands
modern
systems.
Recent
advancements
have
introduced
smart
stimuli‐responsive
materials
for
shielding,
which
provide
real‐time
tunability,
thereby
addressing
limitations
conventional
static
solutions.
These
leverage
various
mechanisms—such
compressive
tensile
strains,
phase
transitions,
shape
memory
effects,
responses
chemical
agents,
humidity,
or
crossover
angle
changes—to
dynamically
adjust
their
effectiveness
(EMI‐SE).
This
review
provides
an
in‐depth
analysis
recent
progress
technologies,
highlighting
tunable
mechanisms,
material
compositions,
applications.
Furthermore,
it
discusses
existing
potential
future
research
directions
required
advancement
this
technology.
By
enabling
environments,
present
a
promising
solution
telecommunications,
wearable
electronics,
aerospace,
defense
sectors.
Nanoscale,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
The
study
investigates
the
structural
design
of
Ti
3
C
2
T
x
PVA
composites
in
hydrogel,
aerogel,
and
film
forms,
showing
that
EMI
shielding
mechanical
properties
are
influenced
by
composite's
configuration
areal
density.
Electrical
conductivity
is
typically
prioritized
when
designing
and
fabricating
high-performance
electromagnetic
interference
(EMI)
shielding
materials.
Achieving
electrically
insulating
yet
EMI
presents
a
significant
challenge
in
the
field
of
advanced
electronic
packaging
due
to
essence
conflict
between
electric
insulation
shielding.
Herein,
we
innovatively
design
propose
flaky
FeSiAl/cellulose
nanofiber
composite
film
(FFSA/CNF)
with
markedly
aligned
structure,
which
achieves
an
resistivity
up
109
Ω·cm
while
providing
broadband
efficiency
60
dB
thickness
220
μm.
The
mechanism
systematically
investigated
based
on
contact
resistance
FFSA,
localized
eddy
current
losses,
strong
magnetic
loss
FFSA.
Moreover,
FFSA/CNF
densely
stacked
oriented
FFSA
possesses
high
thermal
4.74
W/m·K.
Interestingly,
it
exhibits
tunable
intelligent
characteristic
for
EM
attenuation
by
varying
aqueous
film.
In
addition,
outstanding
near-field
performance
demonstrated
simulated
chips,
have
potential
be
applied
field.
This
study
provides
insights
development
both
