Advanced Functional Materials,
Год журнала:
2023,
Номер
33(15)
Опубликована: Янв. 31, 2023
Abstract
Atomic‐molecular
engineering
is
an
effective
way
to
accurately
tailor
the
microstructures
and
components
of
materials
at
micro‐nano
scale,
which
can
be
applied
flexibly
manipulate
their
electromagnetic
(EM)
response.
Herein,
graphene
microlaminates
with
multi‐layer
structure
are
fabricated
by
atomic
cluster
oxidative
molecular
layer
deposition
for
first
time.
The
enable
a
tunable
EM
loss
(from
0.93
3.94
imaginary
permittivity
from
0.17
0.25
permeability)
changing
poly(3,4‐ethylenedioxythiophene)
cycles,
attenuation
constant
reaches
160.
On
this
basis,
multifunctional
antennas
conceived,
achieving
frequency‐selective
response
that
enables
steady
harvest
>
90%
energy
signal
source,
tactfully
recycling
waste
heat
mechanical
energy.
This
study
will
furnish
new
horizon
information
transmission
artificial
intelligence
in
future.
Materials Today,
Год журнала:
2023,
Номер
66, С. 245 - 272
Опубликована: Апрель 10, 2023
Electromagnetic
interference
(EMI)
shielding
is
critical
in
electronic
applications.
However,
the
currently
available
EMI
materials
are
restricted
customizability
and
application
flexibility.
Recent
advances
manufacturing
technologies
have
provided
a
unique
path
to
achieve
custom
creation
of
solutions.
A
successful
example
additive
(AM),
which
has
enabled
high
design
freedom,
efficient
performance
regulation,
multifunctionality
simultaneously
into
fabricated
shields,
offering
an
opportunity
start
revolution
field
shielding.
In
this
review,
we
summarize
latest
AM
materials,
aiming
provide
deep
understanding
connection
between
raw
methods,
considerations,
performances
shields.
We
first
introduce
mechanism
subsequently
focusing
on
characteristics
representative
methods
as-created
Based
requirements
create
application-oriented
solutions,
these
also
critically
compared.
Thereafter,
present
state-of-the-art
considerations
shields
examine
pivotal
roles
realizing
designs.
conclude
by
discussing
future
research
directions,
at
motivating
use
developments
Angewandte Chemie,
Год журнала:
2022,
Номер
134(15)
Опубликована: Фев. 5, 2022
Abstract
Multifunctional
wearable
electronic
devices
based
on
natural
materials
are
highly
desirable
for
versatile
applications
of
energy
conversion,
skin
and
artificial
intelligence.
Herein,
multifunctional
silver
nanowire
decorated
leather
(AgNW/leather)
nanocomposites
with
hierarchical
structures
integrated
visual
Joule
heating,
electromagnetic
interference
(EMI)
shielding
piezoresistive
sensing
fabricated
via
the
facile
vacuum‐assisted
filtration
process.
The
AgNWs
penetrate
micro‐nanoporous
in
corium
side
constructing
highly‐efficient
conductive
networks.
resultant
flexible
mechanically
strong
AgNW/leather
exhibit
extremely
low
sheet
resistance
0.8
Ω/sq,
superior
heating
temperatures
up
to
108
°C
at
supplied
voltage
2.0
V
due
efficient
excellent
EMI
effectiveness
(EMI
SE)
≈55
dB
outstanding
ability
human
motion
detection.
This
work
demonstrates
fabrication
next‐generation
intelligence,
etc.
Nano-Micro Letters,
Год журнала:
2023,
Номер
15(1)
Опубликована: Июнь 7, 2023
Multi-layer
2D
material
assemblies
provide
a
great
number
of
interfaces
beneficial
for
electromagnetic
wave
absorption.
However,
avoiding
agglomeration
and
achieving
layer-by-layer
ordered
intercalation
remain
challenging.
Here,
3D
reduced
graphene
oxide
(rGO)/MXene/TiO2/Fe2C
lightweight
porous
microspheres
with
periodical
intercalated
structures
pronounced
interfacial
effects
were
constructed
by
spray-freeze-drying
microwave
irradiation
based
on
the
Maxwell-Wagner
effect.
Such
approach
reinforced
via
defects
introduction,
skeleton,
multi-layer
assembly
multi-component
system,
leading
to
synergistic
loss
mechanisms.
The
abundant
2D/2D/0D/0D
heterojunctions
in
high
density
polarization
charges
while
generating
sites,
resulting
boosted
polarization,
which
is
verified
CST
Microwave
Studio
simulations.
By
precisely
tuning
nanosheets
heterostructures,
both
impedance
matching
improve
significantly.
At
low
filler
loading
5
wt%,
rate
exceeds
70%,
minimum
reflection
(RLmin)
-67.4
dB
can
be
achieved.
Moreover,
radar
cross-section
simulations
further
confirm
attenuation
ability
optimized
microspheres.
These
results
not
only
novel
insights
into
understanding
enhancing
effects,
but
also
constitute
an
attractive
platform
implementing
heterointerface
engineering
customized
hierarchical
architectures.
