Advanced Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 11, 2025
Abstract
Hearing
loss
is
among
the
most
prevalent
sensory
impairments
globally.
aids
assist
individuals
with
hearing
in
perceiving
sound
more
effectively,
serving
as
essential
tools
for
reconnecting
them
world.
Herein,
an
MXene/Polyvinyl
Alcohol
sensor
(MPSS)
capable
of
recognizing
weak
signals
developed.
It
can
not
only
recognize
different
speech
and
properties
but
also
show
good
stability
process
long‐term
recording.
In
addition,
by
combining
machine
learning,
accuracy
rate
voiceprint
recognition
wildlife
conservation
up
to
99%,
underscoring
its
practical
significance
protection.
Utilizing
piezoresistive
effects,
a
aid
detection
threshold
60
dB
frequency
range
20–4000
Hz
achieved,
which
provides
feasible
scheme
aids.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 1, 2025
Abstract
The
modulation
of
transport
properties
in
ceramic‐based
semiconductors
can
be
used
to
optimize
the
electromagnetic
response
mechanism
and
performance.
A
semiconductor
ceramic
foam
interlayer
wall
(SCFW)
is
designed
by
a
physical
vapor
deposition
method.
structural
SCFW
composed
semiconductor‐insulator‐semiconductor
layers,
incorporating
composite
system
SiC,
Al
4.8
Si
1.2
O
9.6
,
2
3
.
Moreover,
hierarchical
network
structure
controlled
pyrolysis‐deposition
kinetic
process.
Electrons
holes
are
transported
through
heterojunctions
between
SiC
achieving
effective
charge
relaxation.
matrix
provides
lightweight
(density
0.967
g
cm
−3
),
while
determines
excellent
wave
(EMW)
absorption
performance
SCFW,
with
an
bandwidth
up
14.8
GHz
under
(minimum
reflection
loss
RL
min
=
−50.6
dB).
has
been
proven
exhibit
corrosion
resistance
thermal
insulation
properties,
conductivity
0.025
W
m
−1
K
This
study
valuable
insights
into
design
dielectric
property
optimization
nanocomposites,
which
leads
strong
polarization
loss,
opening
new
avenues
for
application
EMW
absorbers,
ceramics.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 15, 2025
Abstract
It
is
crucial
to
develop
electromagnetic
interference
(EMI)
shielding
materials
with
high
efficiency
(SE)
and
reduced
reflection
mitigate
the
secondary
pollution
caused
by
waves
(EMWs).
Herein,
a
novel
multilayer
assembly
strategy
inspired
structure
of
“Turkish
dessert—Baklava”
proposed
introduce
magnetic
hollow
Fe
3
O
4
nanospheres
(HFO)
conductive
MXene
nanosheets
into
bacterial
cellulose
(BC)
network.
Through
layer‐by‐layer
vacuum
filtration
approach,
composite
BC/MXene/HFO
film
controllable
electric‐magnetic
dual‐gradient
achieved.
The
construction
dual
gradients
alleviates
impedance
mismatch
at
air‐film
interface,
resulting
in
reflectivity
toward
EMWs,
while
unique
HFO
facilitates
“absorption–reflection–reabsorption”
process
EMWs.
Consequently,
as‐prepared
(0.35
mm
thickness)
exhibits
an
extraordinary
EMI
SE
67.6
dB
as
low
5.1
dB.
Furthermore,
it
also
demonstrates
exceptional
mechanical
properties,
efficient
thermal
management,
Joule
heating
capabilities,
well
remarkable
passive
active
infrared
camouflage
performances.
This
study
offers
innovative
approach
achieve
less
more
absorption
expands
application
scope
precision
electronics,
aerospace,
military
equipment
fields.
ACS Applied Nano Materials,
Journal Year:
2025,
Volume and Issue:
8(4), P. 1912 - 1924
Published: Jan. 21, 2025
Modern
intelligent
electronic
devices
require
electromagnetic
interference
(EMI)
shielding
composite
films
with
outstanding
effectiveness
and
multifunctionality
to
adapt
increasingly
complex
application
environments.
In
this
work,
inspired
by
the
morphology
of
cocoa
trees,
SiO2
is
conceived
as
fruit
one-dimensional
nanomaterial
silver
nanowires
(AgNWs)
branches.
Utilizing
metal
chelating
properties
polydopamine
(PDA),
SiO2@PDA@AgNWs
were
formed
subsequently
interwoven
cellulose
nanofibers
(CNFs)
create
a
nanocomposite
film
cocoa-tree-like
structure,
denoted
CNFs-AgNWs-SiO2@PDA
(C-A-SP).
Conductive
AgNWs
induce
conductivity
losses,
while
contribute
multiple
scattering
interfacial
polarization
losses.
Therefore,
C-A-SP
thickness
59
μm
demonstrates
an
impressive
EMI
(EMI
SE)
76.91
dB
exhibits
specific
SE
(SSE/t)
15304.88
dB·cm2·g–1.
Meanwhile,
thermal
conductivities
in-plane
out-plane
reached
4.15
0.15
W/(m·K),
respectively.
Additionally,
also
excellent
strain-sensing
capability.
This
study
provides
valuable
insights
for
designing
fabricating
lightweight,
flexible,
multifunctional
efficient
composites.
Small Methods,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 28, 2025
Abstract
With
the
advent
of
5G
era,
there
has
been
a
marked
increase
in
research
interest
concerning
electromagnetic
wave‐absorbing
materials.
A
critical
challenge
remains
improving
properties
these
materials
while
satisfying
diverse
application
demands.
MXenes,
identified
as
prominent
“emerging”
2D
for
wave
absorption,
offer
unique
advantages
that
are
expected
to
drive
advancements
and
innovations
this
field.
This
review
emphasizes
synthesis
benefits
provided
by
structural
characteristics
MXenes
performance
enhancements
achieved
through
their
combination
with
other
absorbing
Material
requirements,
approaches,
conceptual
frameworks
integrated
underscore
advantages.
The
study
provides
thorough
analysis
MXene‐absorbing
composites,
going
beyond
basic
classification
address
preparation
modification
processes
affecting
absorption
composites.
Attention
is
directed
techniques,
design
principles,
influence
on
composite
performance.
Additionally,
potential
applications
devices
summarized.
concludes
addressing
challenges
currently
confronting
MXene
outlining
developmental
trends,
aiming
guidance
subsequent
domain.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 23, 2024
Abstract
Oriented
aerogels,
emerging
as
a
new
generation
of
lightweight
electromagnetic
interference
(EMI)
materials,
often
face
complex
synthesis
processes.
While
creating
an
orderly
oriented
microstructure
for
EMI
aerogels
through
ambient
pressure
drying
(APD)
shows
promise,
it
remains
significant
challenge.
Here,
inspired
by
the
directional
grown
structure
plant,
strategy
that
employs
rapid
precursor
orientation
followed
slow
cross‐linking
to
achieve
APD
is
proposed.
This
approach
demonstrates
low‐temperature
polymerization
polyaniline
enables
strong
with
poly(3,4‐ethylenedioxythiophene)
and
alginate,
forming
robust
conductive
skeleton
mitigating
surface
tension
issues
during
mild
drying.
The
resulting
aerogel
features
high
conductivity
(48.84
S
m
−1
),
excellent
flame
retardancy,
impressive
compressive
strength.
Notably,
its
sturdy
frame
allows
further
enhancement
other
functional
such
Mxene,
re‐processing
re‐drying.
tree‐branch‐like
achieves
significantly
improved
shielding
effectiveness
50.3
dB
across
ultrawideband
range
8.2–40
GHz.
offers
idea
straightforward
preparation
programmability
microstructures
using
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 9, 2024
Abstract
With
the
increasingly
serious
secondary
pollution
of
electromagnetic
waves
(EMWs),
efficient
green
shielding
materials
have
become
an
urgent
need.
MXene
is
widely
used
in
interference
(EMI)
due
to
its
large
surface
area
and
high
conductivity.
Here,
this
work
constructs
islands
with
better
performance
through
viscosity
control
continuous
mechanical
stirring.
Benefiting
from
islands,
Janus‐structural
gel
humidity
response
successfully
prepared,
showing
controllable
ultrahigh
property
(up
100.5
dB,
thickness
2
mm).
Interestingly,
can
spontaneously
adjust
water
content
according
humidity,
resulting
a
reversible
transformation
three
states
meet
needs
different
environments.
By
design
reasonable
material
combination,
demonstrates
excellent
electrothermal
(rise
111.6
°C,
5
s,
V)/thermal
insulation
(thermal
conductivity
low
0.029
W
m
−1
K
)
properties
underwater/fire
operations.
