Metamaterials
are
a
type
of
groundbreaking
engineered
materials
with
unique
properties
not
found
in
natural
substances.
Lattice
metamaterials,
which
have
periodic
lattice
cell
structure,
possess
exceptional
attributes
such
as
negative
Poisson’s
ratio,
high
stiffness-to-weight
ratios,
and
outstanding
energy
dissipation
capabilities.
This
review
provides
comprehensive
examination
metamaterials.
It
covers
their
various
structures
fabrication
methods.
The
emphasizes
the
crucial
role
homogenization
methods
multi-scale
modeling
assessing
metamaterial
properties.
also
highlights
advancement
topology
optimization
through
advanced
computational
techniques,
finite
element
analysis
simulations
machine
learning
algorithms.
Crystals,
Год журнала:
2023,
Номер
13(2), С. 285 - 285
Опубликована: Фев. 7, 2023
The
synergistic
integration
of
nanocomposites
and
3D
printing
has
opened
a
gateway
to
the
future
is
soon
expected
surpass
its
rivalry
with
traditional
manufacturing
techniques.
However,
there
always
challenge
associated
preparing
nanocomposite
resin
for
polymerization-based
printing,
which
agglomeration
nanoparticles.
Due
high
surface-area-to-volume
ratio,
nanoparticles
form
clusters
in
composite
matrix,
affects
final
properties.
This
paper
aims
analyze
effects
graphene
oxide
(GO)
dispersion
on
mechanical
thermal
properties
3D-printed
nanocomposites.
In
particular,
well-dispersed
sonication
route
employed
analyzing
poor
GO
dispersions
their
different
After
microscopic
analyses
testing,
optimum
condition
was
30
min
at
an
amplitude
70%.
terms
properties,
both
tensile
compression
strength
first
increased
then
decreased
gradually
as
well
varying
concentrations.
Furthermore,
less
or
no
effect
stability.
0.05
wt.%
had
highest
strength,
while
beyond
0.5
wt.%,
strengths
reduced
slowly.
These
have
found
application
automotive,
sports,
biomedical
fields.
Chemical Reviews,
Год журнала:
2024,
Номер
124(7), С. 3978 - 4020
Опубликована: Март 28, 2024
Photopolymers
have
been
optimized
as
protective
and
decorative
coating
materials
for
decades.
However,
with
the
rise
of
additive
manufacturing
technologies,
vat
photopolymerization
has
unlocked
use
photopolymers
three-dimensional
objects
new
material
requirements.
Thus,
originally
highly
cross-linked,
amorphous
architecture
cannot
match
expectations
modern
anymore,
revealing
largely
unanswered
question
how
diverse
properties
can
be
achieved
in
photopolymers.
Herein,
we
review
microstructural
features
soft
matter
should
designed
implemented
to
obtain
high
performance
materials.
We
then
translate
these
findings
into
chemical
design
suggestions
enhanced
printable
Based
on
this
analysis,
found
heterogenization
most
powerful
tool
tune
photopolymer
performance.
By
combining
toolbox
analytical
characterization,
examine
current
strategies
physical
(fillers,
inkjet
printing)
(semicrystalline
polymers,
block
copolymers,
interpenetrating
networks,
induced
phase
separation)
put
them
a
scientific
context
develop
roadmap
improving
diversifying
photopolymers'
Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 30, 2024
This
review
paper
systematically
classifies
additive
manufacturing
(AM)
or
3D
printing
techniques
according
to
American
Society
for
Testing
and
Materials
(ASTM)
standards,
which
categorize
these
technologies
into
seven
main
groups:
vat
photopolymerization,
material
extrusion,
powder-bed
fusion,
jetting
(MJT),
binder
jetting,
direct
energy
deposition,
sheet
lamination.
Each
of
categories
is
further
subdivided
specific
subcategories,
providing
a
comprehensive
framework
understand
the
diverse
landscape
AM
technologies.
By
leveraging
ASTM
our
aims
offer
structured
detailed
overview
capabilities
advancements
within
each
technique.
Recent
studies
developments
are
incorporated
highlight
evolution
technologies,
showcasing
innovations
that
have
improved
precision,
compatibility,
efficiency
in
processes.
Furthermore,
critically
examines
materials
used,
advantages,
limitations
associated
with
technique,
exploring
their
applications
across
various
industries
such
as
aerospace,
automotive,
healthcare,
defense,
consumer
goods.
ACS Applied Materials & Interfaces,
Год журнала:
2023,
Номер
15(46), С. 53974 - 53983
Опубликована: Ноя. 9, 2023
Triboelectric
nanogenerators
(TENGs)
represent
intriguing
technology
to
harvest
human
mechanical
movements
for
powering
wearable
and
portable
electronics.
Differently,
compared
conventional
fabrication
approaches,
additive
manufacturing
can
allow
the
of
TENGs
with
good
dimensional
resolution,
high
reproducibility,
quick
production
processes
and,
in
particular,
obtainment
complex
customized
structures.
Among
3D
printing
technologies,
digital
light
processing
(DLP)
is
well-known
being
most
flexible
produce
functional
devices
by
controlling
both
geometry
different
ingredients
printable
resins.
On
other
hand,
DLP
was
not
exploited
TENG
fabrication,
consequently,
knowledge
performance
materials
as
charge
accumulators
upon
friction
limited.
Here,
application
technique
triboelectric
studied.
First,
several
have
been
tested
layers
define
a
series
materials.
Then,
increased
geometrical
complexity
were
printed,
showcasing
ability
energy
from
movement.
The
method
presented
this
work
illustrates
how
may
valuable
solution
fabricate
nanogenerators,
also
providing
classification
common
photocurable
ACS Applied Polymer Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 28, 2025
Vat
photopolymerization
(VP)
is
a
powerful
additive
manufacturing
process
to
produce
high-resolution
3D
objects
from
liquid
photocurable
resins,
but
the
mechanical
performance
of
its
standard
materials
restricts
use
in
high-demanding
applications.
In
this
study,
graphene
oxide
(GO),
widely
investigated
nanomaterial,
was
surface-functionalized
by
grafting
sustainable
and
poly(butylene
itaconate-co-adipate)
(PBIA)
polyester
address
these
limitations.
The
covalent
PBIA
significantly
improved
colloidal
stability
dispersibility
GO
formulations,
eliminating
need
for
extensive
homogenization
during
formulation
nanocomposite
resin.
PBIA-coated
(GO@PBIA)
easily
miscible
with
VP
enabling
fabrication
3D-printed
nanocomposites
superior
properties.
At
low
filler
concentrations
(0.05
wt
%),
GO@PBIA
composites
increased
their
elastic
modulus
up
57%
tensile
strength
100%
compared
base
polymer,
outperforming
analogous
prepared
unmodified
GO.
Surface
modification
also
enhanced
deformability
matrix,
making
suitable
applications
under
flexural
loads.
Optical
morphological
analyses
confirmed
homogeneous
distribution
within
polymer
demonstrating
filler–matrix
interactions,
while
electrical
conductivity
measurements
proved
that
surface
approach
proposed
does
not
affect
conductive
conjugated
π
system
nanomaterial.
This
work
highlights
potential
polymer-grafted
as
multifunctional
nanofiller
enhance
properties
processability
VP-based
materials,
paving
way
high-performance
Scientific Reports,
Год журнала:
2025,
Номер
15(1)
Опубликована: Апрель 12, 2025
Vat
photopolymerisation
is
frequently
used
to
produce
parts
through
additive
manufacture
by
way
of
layer-by-layer
resin
polymerisation.
A
post
curing
process
often
ensure
optimised
polymerisation
the
printed
structures.
The
part
be
digitally
orientated
in
relation
principal
building
axis
and
build
platform.
effects
(or
object)
print
orientation,
post-cure
time
/
temperature
on
mechanical
physical
properties
were
investigated.
Scaled
ASTM
D638
dumbbell
shaped
specimens
measure
degree
conversion;
cylindrical
discs
(15
mm
diameter,
1.6
thick)
evaluate
colour
change
UV-absorbance.
Dumbbell
with
perpendicular
platform
had
significantly
better
tensile
strength
(p
<
0.05)
conversion
0.05).
Increased
influenced
conversion,
yellowing
samples
This
study
highlights
importance
optimising
both
orientation
parameters,
as
well
potential
exploit
protocols
overcome
anisotropy,
which
great
clinical
applications
such
dental
restorations,
bone
scaffolds
prostheses.
Knowledge
how
optimise
SLA-printed
context
application
essential
for
anyone
directly
or
indirectly
employing
technology.
