Abstract
The
Sb‐hybridization
strategy
enables
the
precise
construction
of
p‐n
heterojunctions,
which
significantly
enhances
electromagnetic
wave
(EMW)
absorption
performance
by
optimizing
interface
polarization.
In
this
study,
an
innovative
in
situ
ion‐exchange
method
is
developed
to
implement
Sb
hybridization,
establishing
built‐in
electric
fields
within
CoS
2
/Sb
S
3
@CNFs
that
amplify
polarization
relaxation
loss.
This
structural
design
synergistically
combines
a
carbon‐skeleton‐induced
conductive
network
with
magnetic
loss
mechanisms
,
ultimately
yielding
exceptional
EMW
absorber.
optimized
composite
demonstrates
remarkable
attenuation
capabilities,
achieving
minimum
reflection
(RL
min
)
−57.53
dB
at
mm
and
effective
bandwidth
(EAB
max
7.28
GHz
(covering
X‐band
(8–12
GHz)
Ku‐band
(12–18
GHz)).
study
not
only
provides
novel
for
designing
advanced
absorbers
but
also
highlights
significance
heterojunction
engineering
functional
composites.
Materials,
Год журнала:
2025,
Номер
18(8), С. 1723 - 1723
Опубликована: Апрель 9, 2025
This
study
evaluates
the
thermal
conductivity
of
hemp-based
insulation
materials,
focusing
on
loose
bulk
mixtures
hemp
fibre
and
hurd.
Transient
Plane
Source
(TPS)
measurements
were
employed
to
assess
these
with
a
controlled
variation
in
fibre-to-hurd
ratio
density.
Samples
from
various
suppliers,
including
those
different
diameters
hurd
contents,
tested.
The
results
indicate
conductivities
ranging
0.055
0.065
W/mK,
demonstrating
good
performance.
also
highlights
influence
sample
compression
conductivity,
higher
leading
both
increased
density
conductivity.
When
compared
conventional
materials
glass
wool
polystyrene,
exhibited
approximately
double
However,
same
resistance
(R-value)
could
be
achieved
by
increasing
thickness
insulation.
Abstract
The
Sb‐hybridization
strategy
enables
the
precise
construction
of
p‐n
heterojunctions,
which
significantly
enhances
electromagnetic
wave
(EMW)
absorption
performance
by
optimizing
interface
polarization.
In
this
study,
an
innovative
in
situ
ion‐exchange
method
is
developed
to
implement
Sb
hybridization,
establishing
built‐in
electric
fields
within
CoS
2
/Sb
S
3
@CNFs
that
amplify
polarization
relaxation
loss.
This
structural
design
synergistically
combines
a
carbon‐skeleton‐induced
conductive
network
with
magnetic
loss
mechanisms
,
ultimately
yielding
exceptional
EMW
absorber.
optimized
composite
demonstrates
remarkable
attenuation
capabilities,
achieving
minimum
reflection
(RL
min
)
−57.53
dB
at
mm
and
effective
bandwidth
(EAB
max
7.28
GHz
(covering
X‐band
(8–12
GHz)
Ku‐band
(12–18
GHz)).
study
not
only
provides
novel
for
designing
advanced
absorbers
but
also
highlights
significance
heterojunction
engineering
functional
composites.
