Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 26, 2024
Abstract
Excellent
mechanical
flexibility,
thermal
conductivity,
and
microwave
absorption
are
essential
properties
for
multifunctional
materials
applied
in
next‐generation
wearable
electronics.
However,
it
remains
a
great
challenge
to
improve
the
incompatibility
among
these
properties.
Herein,
high‐quantity
V
2
O
5
@NaV
6
15
@PPy
core‐shell
nanofibers
(CSNFs)
synthesized
via
simple
dissolution‐recrystallization
situ
redox
polymerization
process.
Owing
regular,
periodic,
stable
sensing
signals,
their
membrane
can
serve
as
strain
sensor
accurately
detect
word
pronunciation
body
movement.
Their
TPU
films
possess
high
strength,
excellent
hydrophobicity,
large
conductivity
(3.56
W
m
−1
K
);
7
wt.%
load.
Besides,
CSNFs
exhibit
efficient
wide‐band
(8.56
GHz)
RCS
reduction
(24.41
dBm
)
at
low
load
(7
wt.%),
outperforming
most
other
absorbers.
The
boosted
performance
be
ascribed
1D
structure
with
multiple
heterostructures
abundant
defects,
which
generate
conductive
loss,
diverse
polarizations,
scattering,
cooperative
heat
transfer
of
electrons
phonons.
Further
analyses
reveal
dielectric
loss
mechanisms
based
on
density
states,
electric
field
distribution,
phonon
states.
Overall,
promising
applications
sensing,
management,
EM
protection,
Radar
stealth,
particularly
extreme
environments.
The
unpredictable
and
extremely
cold
weather
conditions,
combined
with
increasing
electromagnetic
pollution,
have
posed
a
serious
threat
to
human
health
socioeconomic
well-being.
However,
existing
deicing
technologies
interference
(EMI)
materials
lack
adaptability
low-temperature,
high-humidity
environments.
This
study
developed
lightweight
asymmetric
layered
composite
foam
by
integrating
multilevel
core-shell
structures
heterogeneous
fillers
into
melamine
(MF)
matrix.
Designed
leverage
the
differences
in
conductivity
dielectric
constant
between
multiscale
interfaces,
this
enhances
movement
of
free
electrons
relative
displacement
atomic
nuclei,
thereby
achieving
efficient
polarization
conduction
losses.
More
than
that,
unique
feature
lies
its
″absorption-absorption-reflection-reabsorption″
structure,
enabling
achieve
an
EMI
shielding
effectiveness
70.7
dB
X-band
(8.2-12.4
GHz)
absorption
efficiency
79.8%.
Benefiting
from
destructive
waves
within
(MHC-MNPF-ACN)
exhibits
superior
absorption-dominated
performance
excellent
frequency
selectivity.
Additionally,
anchoring
dual-size
onto
MF
skeleton
via
impregnation
adsorption
form
honeycomb-like
3D
″light-trapping″
network.
not
only
allows
reach
93.6
°C
under
1
sun,
rapid
160
s
but
also
endows
it
superhydrophobicity
mechanical
properties.
These
features
provide
novel
multifunctional
integrated
approach
fabrication
frequency-selective,
materials,
proposing
new
strategy
for
protection
outdoor
facilities
low-temperature
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 10, 2025
Abstract
There
is
a
significant
increase
in
the
demand
for
lightweight
and
compressible
electromagnetic
interference
(EMI)
shielding
materials
various
fields.
Though
MXene
aerogels
hold
immense
potential
as
EMI
materials,
several
shortcomings
including
poor
water
resistance,
low
mechanical
robustness,
easy
oxidation,
high
cost
limits
of
their
wide
application.
This
work
reported
novel
strategy
involving
co‐assembly
cellulose
nanofibers
(CNF)
through
directional
freezing
freeze‐drying,
followed
by
capsulation‐concreting
thin
layer
flame‐retardant
polydimethylsiloxane
(PDMS)
onto
aerogel,
to
multi‐hierarchically
construct
series
high‐performance
CNF/MXene/PDMS
composite
aerogels.
The
CNF/MXene/PDMS/MPP‐Zr@PDA
aerogel
achieved
ultrahigh
effectiveness
96.8
dB
(X‐band)
utilization
efficiency
1713.27
g
−1
.
Furthermore,
PDMS
coating
effectively
imparted
excellent
compressibility
durability
3D
scaffold,
resulting
compressive
strength
17.01
kPa
representing
199.5%
compared
CNF
aerogel.
Additionally,
exhibited
outstanding
properties
(54.6%
reduction
heat
release
rate),
ultralow
thermal
conductivity
0.0530
W
m
K
hydrophobicity.
Therefore,
durable
promising
applications
protection,
management,
smart
fire
detection,
other
specific
IGI Global eBooks,
Journal Year:
2025,
Volume and Issue:
unknown, P. 1 - 34
Published: April 11, 2025
Due
to
their
unique
properties,
nanofibers
have
been
considered
be
one
of
the
most
intriguing
materials
for
both
academic
research
and
modern
industry.
Nanofibers
offer
promising
answers
long-standing
problems
in
our
daily
lives
a
number
domains
namely
environment
energy
applications.
Furthermore,
this
chapter
gives
an
overview
on
followed
by
significance
electronic
uses.
Some
recommendations
future
developments
application
based
nanofibrous
are
discussed.
The
processes
used
prepare
lignin-based
carbon
such
as
spinning
chemical
vapor
deposition
(CVD)
classifications
Moreover,
some
crucial
sources
development
use
cellulose
illustrated
including
Mxene-based
storage
Finally,
potential
performance
MXene-decorated
nanoengineering
toward
technological
advancement
is
demonstrated.
