Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: June 1, 2024
Abstract
Designing
ultralight
conductive
aerogels
with
tailored
electrical
and
mechanical
properties
is
critical
for
various
applications.
Conventional
approaches
rely
on
iterative,
time-consuming
experiments
across
a
vast
parameter
space.
Herein,
an
integrated
workflow
developed
to
combine
collaborative
robotics
machine
learning
accelerate
the
design
of
programmable
properties.
An
automated
pipetting
robot
operated
prepare
264
mixtures
Ti
3
C
2
T
x
MXene,
cellulose,
gelatin,
glutaraldehyde
at
different
ratios/loadings.
After
freeze-drying,
aerogels’
structural
integrity
evaluated
train
support
vector
classifier.
Through
8
active
cycles
data
augmentation,
162
unique
are
fabricated/characterized
via
robotics-automated
platforms,
enabling
construction
artificial
neural
network
prediction
model.
The
model
conducts
two-way
tasks:
(1)
predicting
physicochemical
from
fabrication
parameters
(2)
automating
inverse
specific
property
requirements.
combined
use
interpretation
finite
element
simulations
validates
pronounced
correlation
between
aerogel
density
compressive
strength.
model-suggested
high
conductivity,
customized
strength,
pressure
insensitivity
allow
compression-stable
Joule
heating
wearable
thermal
management.
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 Materials,
Journal Year:
2024,
Volume and Issue:
36(24)
Published: March 12, 2024
Abstract
Modern
human
civilization
deeply
relies
on
the
rapid
advancement
of
cutting‐edge
electronic
systems
that
have
revolutionized
communication,
education,
aviation,
and
entertainment.
However,
electromagnetic
interference
(EMI)
generated
by
digital
poses
a
significant
threat
to
society,
potentially
leading
future
crisis.
While
numerous
efforts
are
made
develop
nanotechnological
shielding
mitigate
detrimental
effects
EMI,
there
is
limited
focus
creating
absorption‐dominant
solutions.
Achieving
EMI
shields
requires
careful
structural
design
engineering,
starting
from
smallest
components
considering
most
effective
wave
attenuating
factors.
This
review
offers
comprehensive
overview
structures,
emphasizing
critical
elements
design,
mechanisms,
limitations
both
traditional
shields,
common
misconceptions
about
foundational
principles
science.
systematic
serves
as
scientific
guide
for
designing
structures
prioritize
absorption,
highlighting
an
often‐overlooked
aspect
Nano-Micro Letters,
Journal Year:
2023,
Volume and Issue:
15(1)
Published: Nov. 2, 2023
Abstract
There
is
an
urgent
demand
for
flexible,
lightweight,
mechanically
robust,
excellent
electromagnetic
interference
(EMI)
shielding
materials.
Two-dimensional
(2D)
transition
metal
carbides/nitrides
(MXenes)
have
been
potential
candidates
the
construction
of
EMI
materials
due
to
their
great
electrical
electroconductibility,
favorable
mechanical
nature
such
as
flexibility,
large
aspect
ratios,
and
simple
processability
in
aqueous
media.
The
applicability
MXenes
has
intensively
explored;
thus,
reviewing
relevant
research
beneficial
advancing
design
high-performance
MXene-based
shields.
Herein,
recent
progress
macrostructure
development
reviewed,
including
associated
mechanisms.
In
particular,
various
structural
strategies
are
highlighted
explored.
end,
difficulties
views
future
growth
shields
proposed.
This
review
aims
drive
macrostructures
on
basis
rational
high-efficiency
utilization
MXene.
ACS Applied Nano Materials,
Journal Year:
2023,
Volume and Issue:
6(7), P. 6141 - 6150
Published: March 31, 2023
It
is
a
considerable
challenge
to
develop
composite
material
with
ultra-light
and
high
electromagnetic
interference
(EMI)
shielding
efficiency
for
the
next
generation
of
electronic
equipment.
MXenes
have
received
extensive
attention
in
aerogel
EMI
due
their
abundant
surface
groups
ultra-high
conductivity.
However,
poor
mechanical
properties
make
them
difficult
apply
on
large
scale.
Here,
we
demonstrate
simple
method
construct
conductive
Ti3C2Tx
MXene/aramid
nanofibers
(ANFs)/carbon
nanotubes
(CNTs)
aerogels
"sandwich"
structure.
CNTs
MXene
absorb
reflect
waves,
while
ANF
provides
good
strength.
Our
an
extra-high
up
69.0
dB
at
X-band,
despite
thickness
density
being
only
2
mm
0.0428
g/cm3,
respectively.
At
same
time,
low
0.0488
W/(m·K)
thermal
conductivity
shows
extraordinary
flame
resistance,
heat
preservation,
insulation
ability.
Besides,
MXene/ANFs/CNTs
can
reach
104
°C
3
s
under
8
V
voltage
long-term
Joule
heating
stability.
This
work
forward-looking
idea
building
multifunctional
materials.
The
obtained
potential
applications
aerospace,
portable
devices,
defense
industries.
