Smart Materials and Structures,
Год журнала:
2024,
Номер
33(9), С. 095012 - 095012
Опубликована: Июль 28, 2024
Abstract
Harvesting
energy
from
rotational
motion
is
an
efficient
and
widely
used
technology
that
provides
power
support
for
various
electronic
devices
systems
by
converting
mechanical
kinetic
into
electrical
energy.
This
harvesting
method
shows
great
potential
advantages
in
industrial
automation,
transportation,
wind
generation,
smart
homes.
study
proposes
a
piezoelectric-electromagnetic
hybrid
harvester
(HEH)
driven
magnetic
repulsion.
HEH
comprises
of
two
parts:
piezoelectric
(PEH)
electromagnetic
(EMH).
utilizes
the
drive
reciprocating
to
enhance
collection
efficiency
PEH
EMH.
Additionally,
adding
effect
ends
bimorph
sheets,
spectrum
expanded.
Its
parameters
are
analyzed
using
theoretical
analysis
simulation,
experimental
testbed
established
explore
influence
output
performance.
The
results
indicate
reaches
its
maximum
when
there
2
circular
magnets
on
rotor,
gap
distance
15
mm,
mass
blocks
at
end
sheet.
EMH
outputs
173.36
V
4.81
V,
respectively.
53.45
mW.
density
can
reach
6.818
mW
cm
−3
.
Compared
with
EMH,
performance
improved
46.94%
174.95%,
When
rotation
speed
500
r
min
−1
,
effortlessly
light
up
80
LEDs.
all
demonstrate
low-power
sensors.
Applied Physics Reviews,
Год журнала:
2025,
Номер
12(1)
Опубликована: Март 1, 2025
The
ever-increasing
energy
demand
has
highlighted
the
need
for
sustainable,
low-carbon,
and
multi-functional
solutions.
Recently,
multi-material
additive
manufacturing
(MMAM)
become
an
emerging
processing
approach
to
prototype
storage
conversion
devices
by
enabling
fabrication
of
complex
systems
in
a
single,
streamlined
process
while
offering
design
freedom
customize
end-product
properties
at
precise,
user-defined
patterns
geometries.
Moreover,
it
provides
opportunities
fine-tune
interfaces
material
compositions
microscale,
opening
new
avenues
next-generation
devices.
As
MMAM
is
still
its
early
stages,
comprehensive
understanding
interplay
between
chemistry,
methods,
device
fundamental
fully
realize
potential
developing
high-performance
materials.
This
review
proposes
framework
bridge
gaps
principles
physics
practical
implementation
various
techniques
fabricating
advanced
devices,
highlighting
research
challenges
future
opportunities.
Advanced Sustainable Systems,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 23, 2024
Abstract
Harvesting
magnetic
noise
fields
around
power
cables
emerges
as
an
attractive
approach
due
to
its
potential
a
renewable
and
ubiquitous
energy
source
for
powering
wireless
sensor
networks
(WSNs)
in
IoT
applications,
miniature
electronics,
implantable
medical
devices.
Flexible
polymer‐based
magneto‐mechano‐electric
(MME)
generators
gain
attention
their
effectiveness
harvesting
owing
durability
flexibility.
In
this
study,
lead‐free,
flexible
MME
generator
is
developed
by
using
Polyvinylidene
fluoride
(PVDF)‐Aluminium
nitride
(AlN)‐nanofiber
composites
fabricated
via
electrospinning
with
different
AlN
compositions
integrated
magnetostrictive
Metglas
layer
that
offers
self‐bias
characteristics.
The
modeled
COMSOL
Multiphysics
analyze
the
flux
density
distribution
over
surface
piezoelectric
effect
of
nanofiber
composites,
simulation
results
aligning
well
experimental
data.
optimized,
generator,
incorporating
15
wt.%
PVDF/Metglas
composite,
achieves
open‐circuit
voltage
18.5
V
0.93
mW‐cm
−3
when
exposed
Alternating
Current
(AC)
field
6
Oe
at
resonance
frequency
50
Hz.
generated
sufficient
operate
LEDs
sensor.
This
newly
shows
significant
promise
advanced
applications
self‐powered
WSNs.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 21, 2025
Abstract
This
study
investigates
both
structural
and
non‐structural
effects
on
the
piezoelectric
performance
of
polyvinylidene
fluoride
(PVDF)
fibers,
focusing
impact
double
Raschel
fabric
components.
It
identifies
key
factors
influencing
performance,
with
emphasis
optimizing
fiber
cross‐sectional
shape,
specifically
an
eight‐petal
structure.
structure
enhances
output
open‐circuit
voltage
(V
oc
)
41.28
V
short‐circuit
current
(I
sc
6.140
µA
due
to
its
large
surface
area.
Incorporating
5%
SnTiO
3
nanorods
as
high‐relative
permittivity
fillers
results
in
maximum
improvement.
Structural
optimization
using
different
spacer
yarn
lengths
reveals
that
5
mm
configuration
provides
best
achieving
a
92.80
I
4.130
mA.
The
has
most
significant
followed
by
full
transition
PVDF
embedded
SnTiO₃
nanorods.
Modifying
composition
plays
crucial
role
enhancing
.
effect
air
volume
is
found
be
more
dominant
than
length.
Notably,
optimized
fabrics
demonstrate
high
durability
real‐time
landslide
warning
systems,
capable
generating
body
motions
sending
messages
via
Bluetooth
under
simulated
conditions.
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 8, 2024
Abstract
3D
printing
technology
enables
the
creation
of
complex
ceramic
structures
and
enhances
efficiency
customized
production.
Polymers
play
a
crucial
role
in
3D‐printed
composites
due
to
their
unique
processability,
yet
significance
application
strategies
remain
underexplored.
These
polymers
not
only
enable
rapid
precise
shaping
but
also
offer
additional
advantages
adjustable
physicochemical
properties.
Therefore,
appropriate
selection
utilization
are
expected
drive
new
breakthroughs
field
composites.
This
review
provides
an
overview
relevant
additive
manufacturing
technologies
processes,
with
specific
focus
on
for
using
composites,
including
roles
as
binders,
templates,
preceramics,
matrices.
Highlighting
critical
functionalities
potential
value
these
from
practical
perspective.
