Advanced Science,
Journal Year:
2024,
Volume and Issue:
11(17)
Published: Feb. 25, 2024
MXene-based
thermal
camouflage
materials
have
gained
increasing
attention
due
to
their
low
emissivity,
however,
the
poor
anti-oxidation
restricts
potential
applications
under
complex
environments.
Various
modification
methods
and
strategies,
e.g.,
addition
of
antioxidant
molecules
fillers
been
developed
overcome
this,
but
realization
long-term,
reliable
using
MXene
network
(coating)
with
excellent
comprehensive
performance
remains
a
great
challenge.
Here,
hybrid
comodified
hyaluronic
acid
(HA)
hyperbranched
polysiloxane
(HSi)
is
designed
fabricated.
Notably,
presence
appreciated
HA
oxidation
sheets
without
altering
infrared
stealth
performance,
superior
other
water-soluble
polymers;
while
HSi
can
act
as
efficient
cross-linking
agents
generate
strong
interactions
between
molecules.
The
optimized
MXene/HA/HSi
composites
exhibit
mechanical
flexibility
(folded
into
crane
structure),
good
water/solvent
resistance,
long-term
stable
capability
(with
emissivity
≈0.29).
reliability
(≈8
months)
various
outdoor
weathers
scalable
coating
MXene-coated
textile
enable
them
disguise
IR
signal
targets
in
environments,
indicating
promise
achieved
material
for
camouflage,
stealth,
counter
surveillance.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: Feb. 12, 2024
Abstract
Two-dimensional
(2D)
superlattices,
formed
by
stacking
sublattices
of
2D
materials,
have
emerged
as
a
powerful
platform
for
tailoring
and
enhancing
material
properties
beyond
their
intrinsic
characteristics.
However,
conventional
synthesis
methods
are
limited
to
pristine
sublattices,
posing
significant
practical
challenge
when
it
comes
chemically
modified
sublattices.
Here
we
report
chemical
method
that
overcomes
this
creating
unique
graphene
superlattice,
with
monodisperse,
nanometer-sized,
square-shaped
pores
strategically
doped
elements
at
the
pore
edges.
The
resulting
superlattice
exhibits
remarkable
correlations
between
quantum
phases
both
electron
phonon
levels,
leading
diverse
functionalities,
such
electromagnetic
shielding,
energy
harvesting,
optoelectronics,
thermoelectrics.
Overall,
our
findings
not
only
provide
design
principles
synthesizing
understanding
functional
superlattices
but
also
expand
enhanced
functionality
extensive
application
potential
compared
counterparts.
Nano Letters,
Journal Year:
2024,
Volume and Issue:
24(11), P. 3369 - 3377
Published: Feb. 19, 2024
Microwave-absorbing
materials
with
regulatable
absorption
frequency
and
optical
camouflage
hold
great
significance
in
intelligent
electronic
devices
advanced
stealth
technology.
Herein,
we
present
an
innovative
microwave-absorbing
foam
that
can
dynamically
tune
microwave
frequencies
via
a
simple
mechanical
compression
while
parallel
enabling
over
broad
spectral
ranges
by
adjusting
the
structural
colors.
The
vivid
colors
spanning
different
color
categories
generated
from
thin-film
interference
be
precisely
regulated
thickness
of
conformal
TiO2
coatings
on
Ni/melamine
foam.
Enhanced
interfacial
defect-induced
polarizations
resulting
introduction
coating
synergistically
contribute
to
dielectric
attenuation
performance.
Consequently,
such
exhibits
exceptional
capabilities,
tuned
S
band
Ku
manipulating
its
ratio.
Additionally,
simulation
calculations
validate
adjustable
electromagnetic
wave
loss
behavior,
offering
valuable
insights
for
development
next-generation
across
diverse
fields.
Advanced Science,
Journal Year:
2024,
Volume and Issue:
11(17)
Published: Feb. 25, 2024
MXene-based
thermal
camouflage
materials
have
gained
increasing
attention
due
to
their
low
emissivity,
however,
the
poor
anti-oxidation
restricts
potential
applications
under
complex
environments.
Various
modification
methods
and
strategies,
e.g.,
addition
of
antioxidant
molecules
fillers
been
developed
overcome
this,
but
realization
long-term,
reliable
using
MXene
network
(coating)
with
excellent
comprehensive
performance
remains
a
great
challenge.
Here,
hybrid
comodified
hyaluronic
acid
(HA)
hyperbranched
polysiloxane
(HSi)
is
designed
fabricated.
Notably,
presence
appreciated
HA
oxidation
sheets
without
altering
infrared
stealth
performance,
superior
other
water-soluble
polymers;
while
HSi
can
act
as
efficient
cross-linking
agents
generate
strong
interactions
between
molecules.
The
optimized
MXene/HA/HSi
composites
exhibit
mechanical
flexibility
(folded
into
crane
structure),
good
water/solvent
resistance,
long-term
stable
capability
(with
emissivity
≈0.29).
reliability
(≈8
months)
various
outdoor
weathers
scalable
coating
MXene-coated
textile
enable
them
disguise
IR
signal
targets
in
environments,
indicating
promise
achieved
material
for
camouflage,
stealth,
counter
surveillance.
