Heliyon,
Journal Year:
2024,
Volume and Issue:
10(21), P. e39118 - e39118
Published: Oct. 10, 2024
Dielectrics
are
essential
for
storing
and
controlling
electrical
energy
in
the
electronic
industries.
However,
their
production
from
non-renewable
sources
raises
environmental
concerns.
This
review
investigates
sustainable
polymer-based
dielectric
composites
made
agricultural
waste,
focusing
on
various
parameters
that
affect
characteristics.
These
offer
improved
properties
contribute
to
waste
reduction
sustainability.
Agricultural
including
crop
residues
by-products,
offers
a
promising,
source
of
composite
materials.
also
highlights
feasibility
using
waste-based
polymer
material
electronics
applications.
Dielectric
composite's
permittivity
is
influenced
by
carbon,
oxygen,
filler,
temperature,
cellulose,
morphological
changes.
Biodegradable
materials
like
which
have
good
fibre
carbon
content,
can
produce
constants,
making
them
suitable
antennas
microwave
absorbers.
In
conclusion,
underscores
importance
practices
development
valuable
role
advancing
environmentally
friendly
solutions.
Advanced Science,
Journal Year:
2024,
Volume and Issue:
11(26)
Published: May 7, 2024
Abstract
Electromagnetic
(EM)
metamaterials
have
garnered
considerable
attention
due
to
their
capacity
achieve
negative
parameters,
significantly
influencing
the
integration
of
natural
materials
with
artificially
structural
media.
The
emergence
carbon
aerogels
(CAs)
offers
an
opportunity
create
lightweight
EM
metamaterials,
notable
for
promising
shielding
or
absorption
effects.
This
paper
introduces
efficient,
low‐cost
method
fabricating
CAs
without
requiring
stringent
drying
conditions.
By
finely
tuning
ZnCl
2
/lignin
ratio,
porosity
is
controlled
in
CAs.
control
leads
epsilon‐negative
response
radio‐frequency
region,
driven
by
intrinsic
plasmonic
state
3D
network,
as
opposed
traditional
periodic
building
blocks.
approach
yields
a
tunable
and
weakly
response,
reaching
order
magnitude
−10
3
under
MHz
frequencies.
Equivalent
circuit
analysis
highlights
inductive
characteristics
CAs,
correlating
significant
dielectric
loss
at
low
Additionally,
simulations
are
performed
evaluate
distribution
electric
field
vector
showcasing
potential
effective
shielding.
lignin‐derived,
hold
promise
pioneering
new
directions
broadening
application
diverse
extreme
Nano-Micro Letters,
Journal Year:
2024,
Volume and Issue:
17(1)
Published: Oct. 17, 2024
The
incidence
of
large
bone
defects
caused
by
traumatic
injury
is
increasing
worldwide,
and
the
tissue
regeneration
process
requires
a
long
recovery
time
due
to
limited
self-healing
capability.
Endogenous
bioelectrical
phenomena
have
been
well
recognized
as
critical
biophysical
factors
in
remodeling
regeneration.
Inspired
bioelectricity,
electrical
stimulation
has
widely
considered
an
external
intervention
induce
osteogenic
lineage
cells
enhance
synthesis
extracellular
matrix,
thereby
accelerating
With
ongoing
advances
biomaterials
energy-harvesting
techniques,
electroactive
self-powered
systems
biomimetic
approaches
ensure
functional
recapitulating
natural
electrophysiological
microenvironment
healthy
tissue.
In
this
review,
we
first
introduce
role
bioelectricity
endogenous
electric
field
summarize
different
techniques
electrically
stimulate
Next,
highlight
latest
progress
exploring
hybrid
such
triboelectric
piezoelectric-based
nanogenerators
photovoltaic
cell-based
devices
their
implementation
engineering.
Finally,
emphasize
significance
simulating
target
tissue's
propose
opportunities
challenges
faced
bioelectronics
for
repair
strategies.
International Journal of Energy Research,
Journal Year:
2025,
Volume and Issue:
2025(1)
Published: Jan. 1, 2025
This
study
explores
the
innovative
recycling
of
neodymium
(Nd)
permanent
magnet
scrap
to
synthesize
Fe
3
O
4
,
a
high‐capacity
anode
material
for
secondary
batteries,
by
leveraging
oxalate
solution
produced
during
recycling.
The
traditional
process
recovering
from
magnets
in
form
oxides
produces
products
with
limited
economic
viability
and
usability.
For
first
time,
we
have
successfully
synthesized
as
an
lithium‐ion
(Li‐ion)
batteries
Nd
magnets.
We
address
existing
challenge
employing
novel
approach:
hydrothermal
synthesis
crystalline
FeC
2
·2H
leachate,
extracted
via
oxalic
acid
leaching
mixed
phase
NdF
‐Fe
controlled
fluorination
heat
treatment
while
recovered
is
subsequently
phase‐transferred
under
Ar
atmosphere.
To
overcome
inherent
low
conductivity
rate
capability
carbon‐coating
utilizing
dopamine
HCl
implemented.
developed
C‐Fe
exhibits
significant
capacity
retention
428
mAh/g
after
500
cycles
at
1C,
showcasing
its
potential
use
high‐performance
contributing
sustainable
critical
materials.
