Advanced Functional Materials,
Journal Year:
2022,
Volume and Issue:
32(40)
Published: July 22, 2022
Abstract
Intelligent
microwave
absorption
(MA)
materials
possess
the
ability
to
dynamically
change
their
performance,
according
real‐time
requirements,
and
it
is
of
great
significance
in
future
civil
military
fields.
For
first
time,
reduced
graphene
oxide/VO
2
composite
aerogels
are
developed
with
off/on
switchable
MA
mechanism
originated
from
unique
phase
behavior
VO
.
As
temperature
increases
(>68
°C),
displays
monoclinic
rutile
phase,
which
accompanies
significant
changes
aerogel's
electrical
conductivity
as
well
its
permittivity,
consequently
leads
performance.
Particularly,
two
different
switch
modes,
“on
off”
“off
on”,
can
be
separately
realized
by
increases,
this
performance
also
confirmed
good
cycling
stability.
More
importantly,
during
process,
maximum
for
effective
bands
(ΔEAB)
RL
values
(ΔRL)
high
7.27
GHz
49
dB,
exceeds
most
current
reports.
Besides,
RCS
simulations
on
aircrafts
have
been
performed
verified
intelligent
thus
providing
useful
guidance
next‐generation
smart
electromagnetic
devices
various
ACS Applied Materials & Interfaces,
Journal Year:
2023,
Volume and Issue:
15(5), P. 7308 - 7318
Published: Jan. 24, 2023
Exploring
electromagnetic
interference
(EMI)
shielding
materials
with
ultra-efficient
EMI
effectiveness
(SE)
and
an
absorption-dominated
mechanism
is
urgently
required
for
fundamentally
tackling
radiation
pollution.
Herein,
zeolitic
imidazolate
framework-67
(ZIF-67)/MXene/cellulose
aerogels
were
first
prepared
via
a
simple
solution
mixing-regeneration
freeze-drying
process.
Subsequently,
they
are
converted
into
electric/magnetic
hybrid
carbon
(Co/C/MXene/cellulose-derived
aerogels)
through
facile
pyrolysis
strategy.
ZIF-67-derived
porous
Co/C
could
provide
the
additional
magnetic
loss
capacity.
The
resultant
exhibit
hierarchically
structure,
complementary
waves
(EMWs)
mechanisms,
abundant
heterointerfaces.
construction
of
architecture
synergy
greatly
alleviate
impedance
mismatching
at
air-specimen
interface,
which
enables
more
EMWs
to
enter
consumption.
Moreover,
numerous
heterointerfaces
among
Co/C,
Ti3C2Tx
MXene,
cellulose-derived
skeleton
induce
generation
multiple
polarization
losses
containing
interfacial
dipole
polarization,
further
dissipate
EMWs.
aerogel
low
density
(85.6
mg/cm3)
achieves
ultrahigh
SE
86.7
dB
superior
absorption
coefficient
0.72
simultaneously.
This
work
not
only
offers
novel
approach
design
high-performance
entailing
reflection
characteristic
but
also
broadens
applicability
in
aerospace,
precision
electronic
devices,
military
stealth
instruments.
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
33(33)
Published: May 1, 2023
Abstract
Benefiting
from
inherent
lightweight,
flexibility,
and
good
adaptability
to
human
body,
functional
textiles
are
attracting
tremendous
attention
cope
with
wearable
issues
in
sustainable
applications
around
beings.
In
this
feature
article,
a
comprehensive
thoughtful
review
is
proposed
regarding
research
activities
of
smart
properties.
Specifically,
brief
exposition
highlighting
the
significance
rising
demands
novel
throughout
society
begun.
Next,
systematic
provided
about
fabrication
1D
spinning,
2D
modification,
3D
construction,
their
diverse
functionality
as
well
applications,
showing
clear
picture
evolved
readers.
How
engineer
compositions,
structures,
properties
elaborated
achieve
different
All
these
tunable,
upgraded,
versatile
make
developed
suited
for
extensive
ranging
environmental
monitoring
or
freshwater
access
personal
protection
power
supply.
Finally,
simple
summary
critical
analysis
drawn,
emphasis
on
insight
into
remaining
challenges
future
directions.
With
worldwide
efforts,
advance
breakthrough
textile
functionalization
expounded
will
promote
revolution
intelligence
era.
ACS Applied Materials & Interfaces,
Journal Year:
2022,
Volume and Issue:
14(36), P. 41468 - 41480
Published: Sept. 1, 2022
Developing
high-efficiency
electromagnetic
interference
(EMI)
shielding
composite
films
with
outstanding
flexibility
and
excellent
thermal
management
capability
is
vital
but
challenging
for
modern
integrated
electronic
devices.
Herein,
a
facile
two-step
vacuum
filtration
method
was
used
to
fabricate
ultrathin,
flexible,
multifunctional
cellulose
nanofiber
(CNF)-based
an
asymmetric
layered
architecture.
The
structure
composed
of
low-conductivity
CoFe2O4@MXene/CNF
layer
highly
conductive
silver
nanowires
(AgNWs)/CNF
layer.
Benefiting
from
the
rational
placement
impedance
matching
layer,
as
well
synergistic
effect
electric
magnetic
losses,
resultant
film
exhibits
extremely
high
EMI
effectiveness
(SE)
73.3
dB
average
SE
70.9
low
reflected
efficiency
4.9
at
only
0.1
mm
thickness.
Sufficiently
reliable
(over
95%
reservation)
attained
even
after
suffering
continuous
physical
deformations
long-term
chemical
attacks.
Moreover,
prepared
exhibit
extraordinary
flexibility,
strong
mechanical
properties,
satisfactory
capability.
This
work
offers
viable
strategy
exploiting
performance
attractive
capacity,
present
extensive
application
potential
in
aerospace,
artificial
intelligence,
advanced
electronics,
stealth
technology,
national
defense
industry,
under
harsh
environments.
ACS Applied Materials & Interfaces,
Journal Year:
2022,
Volume and Issue:
14(31), P. 36060 - 36070
Published: Aug. 1, 2022
Delicately
aligned
structures
of
two-dimensional
(2D)
MXene
nanosheets
have
demonstrated
positive
effects
on
applications,
especially
in
electromagnetic
interference
(EMI)
shielding
and
infrared
(IR)
stealth.
However,
precise
regulation
structural
assembly
by
theory-guided
solution
processing
is
still
a
great
challenge.
Herein,
one-dimensional
(1D)
cellulose
nanofibers
(CNFs)
with
high
aspect
ratio
are
applied
as
reinforcing
agent
rheological
modifier
for
MXene/CNF
colloids
to
fabricate
MXene-based
materials
EMI
IR
Notably,
systematical
study
the
proposed
determine
optimal
solution-processing
conditions
finely
oriented
component
arrangement
requirements
provides
in-depth
information
interactions
between
components.
The
delicately
regulated
orientation
structure
assembled
shear
inducement
convincingly
through
micro-CT
wide-angle
X-ray
diffraction/small-angle
scattering
(WAXD/SAXS),
which
endows
film
significantly
enhanced
electrical
conductivity
46
685
S
m-1,
tensile
strength
281.7
MPa,
Young's
modulus
14.8
GPa.
Furthermore,
highly
ultrathin
possesses
enhancement
effectiveness
(50.2
dB)
stealth
(0.562
emissivity).
These
findings
provide
fruitful
understanding
optimized
fabrication
high-performance
functional
composite
films
open
up
opportunity
development
multifunctional
materials.
