ACS Energy Letters,
Journal Year:
2024,
Volume and Issue:
9(5), P. 2240 - 2247
Published: April 17, 2024
Tapping
on
waste
heat
for
green
electricity
is
a
welcomed
goal,
especially
in
an
energy-scarce
era.
For
more
than
200
years,
the
optimization
of
thermoelectric
modules
has
been
through
either
materials
efficiency
or
device
topology
(fill
factor,
aspect
ratio,
etc.).
Now,
there
pressing
need
re-examination
its
design
higher
power
performance
modules.
Specifically,
have
recent
reports
potential
leg
geometries
increased
output
power,
but
progress
hampered
by
current
fabrication
methods.
In
this
Perspective,
we
offer
fresh
take
how
lattice
architectural
legs
are
cost-effective
strategy
that
can
drastically
improve
output.
We
will
discuss
extent
to
which
lightweight
and
trade-offs
with
mechanical
conclude
strategies
realize
them
industrial
applications.
Advanced Science,
Journal Year:
2023,
Volume and Issue:
11(4)
Published: Nov. 23, 2023
Abstract
The
reduction
of
noises,
achieved
through
absorption,
is
paramount
importance
to
the
well‐being
both
humans
and
machines.
Lattice
structures,
defined
as
architectured
porous
solids
arranged
in
repeating
patterns,
are
emerging
advanced
sound‐absorbing
materials.
Their
immense
design
freedom
allows
for
customizable
pore
morphology
interconnectivity,
enabling
specific
absorption
properties.
Thus
far,
sound
performance
various
types
lattice
structures
studied
they
demonstrated
favorable
properties
compared
conventional
Herein,
this
review
gives
a
thorough
overview
on
current
research
status,
characterizations
terms
acoustics
proposed.
Till
date,
there
four
main
mechanisms
associated
with
structures.
Despite
their
complexity,
can
be
accurately
modelled
using
acoustical
impedance
models
that
focus
critical
geometries.
Four
defining
features:
morphology,
relative
density,
cell
size,
number
cells,
have
significant
influences
geometries
hence
wave
dissipation
within
lattice.
Drawing
upon
structural‐property
relationships,
classification
into
three
distinct
It
proposed
future
attentions
placed
new
concepts,
materials
selections,
multifunctionalities.
Virtual and Physical Prototyping,
Journal Year:
2024,
Volume and Issue:
19(1)
Published: April 8, 2024
Enhancing
energy
absorption
in
mechanical
metamaterials
has
been
a
focal
point
structural
design.
Traditional
methods
often
include
introducing
heterogeneity
across
unit
cells.
Herein,
we
propose
straightforward
ribbed
strategy
to
achieve
exceptional
absorption.
We
demonstrate
our
concept
through
modified
body-centered
cubic
(BCC)
and
face-centered
(FCC)
truss-lattice
(BCCR
FCCR).
Using
stainless-steel
316L
samples,
compression
tests
indicate
111%
91%
increase
specific
(SEA)
for
BCCR
FCCR,
respectively,
along
with
an
enhancement
strength
by
61.8%
40.7%.
Deformation
mechanisms
are
comprehensively
elucidated
both
finite
element
analysis
theoretical
calculations.
The
mitigation
of
stress
concentration
at
nodes,
redistribution
load
transfer
pathways
within
struts,
introduction
multiple
plastic
hinges
collectively
contribute
increased
higher
strength.
rein-based
polymer
the
also
exhibit
damage
tolerance,
experiencing
only
15%
loss
maximum
after
cyclic
20%
strain,
while
maintaining
73%
SEA
compared
their
non-ribbed
counterpart.
This
extends
beyond
discussed
structures,
presenting
itself
as
generic
approach
enhance
plateau
SEA.
NPG Asia Materials,
Journal Year:
2024,
Volume and Issue:
16(1)
Published: Sept. 13, 2024
Abstract
In
practical
engineering,
noise
and
impact
hazards
are
pervasive,
indicating
the
pressing
demand
for
materials
that
can
absorb
both
sound
stress
wave
energy
simultaneously.
However,
rational
design
of
such
multifunctional
remains
a
challenge.
Herein,
inspired
by
cuttlebone,
we
present
bioinspired
architected
metamaterials
with
unprecedented
sound-absorbing
mechanical
properties
engineered
via
weakly-coupled
design.
The
acoustic
elements
feature
heterogeneous
multilayered
resonators,
whereas
responses
based
on
asymmetric
cambered
cell
walls.
These
experimentally
demonstrated
an
average
absorption
coefficient
0.80
from
1.0
to
6.0
kHz,
77%
data
points
exceeding
desired
0.75
threshold,
all
compact
21
mm
thickness.
An
absorptance-thickness
map
is
devised
assessing
sound-absorption
efficiency.
high-fidelity
microstructure-based
model
reveals
air
friction
damping
mechanism,
broadband
behavior
attributed
multimodal
hybrid
resonance.
Empowered
walls,
shift
catastrophic
failure
toward
progressive
deformation
mode
characterized
stable
plateaus
ultrahigh
specific
50.7
J/g—a
558.4%
increase
over
straight-wall
After
mechanisms
elucidated,
comprehensive
research
framework
burgeoning
acousto-mechanical
proposed.
Overall,
our
study
broadens
horizon
material
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 3, 2024
Abstract
Simultaneous
high
strength
and
toughness
are
highly
sought‐after
in
lattice
metamaterials,
but
these
properties
typically
mutually
exclusive.
To
overcome
this
challenge,
the
development
of
interpenetrating
phase
composite
(IPC),
which
incorporates
a
net
matrix
infill
into
lattice,
has
shown
great
potential
overcoming
constraints
is
thus
continuous
practical
interest.
In
work,
novel
aperiodic
monotile
truss
polymer
IPC
that
exhibit
unprecedented
enhancement
both
reported.
Specifically,
unit
cell
inspired
by
Einstein's
monotile,
single
space‐filling
shape
where
orientation
never
repeats.
The
IPCs
achieved
through
3D‐printed
Ti‐6Al‐4V
lattices
epoxy
infiltration.
highest
gain
compressive
reveals
an
impressive
246.61%
increase,
significantly
exceeding
“1
+
1
>
2”
idealization
associated
with
metamaterials.
Furthermore,
specific
energy
absorption
46.2
J
g
−1
demonstrates
superior
toughness.
underlying
mechanisms,
including
damage
sequences,
two‐phase
interactions,
geometric
effects
between
epoxy,
fully
elucidated.
Overall,
work
reports
IPC's
utilizing
idealized
structures
to
achieve
optimal
combination
mechanical
Materials & Design,
Journal Year:
2024,
Volume and Issue:
238, P. 112659 - 112659
Published: Jan. 14, 2024
Traditional
materials
or
advanced
artificially
engineered
metamaterials
are
incapable
of
effectively
addressing
the
simultaneous
challenges
impact
energy
hazards
and
low-frequency
noise.
There
is
an
urgent
need
for
multifunctional
that
can
address
this
multi-physics
field
coupling
problem.
Herein,
a
hierarchical
chiral
metamaterial
(HMCM)
proposed
damage-resistance
broadband
sound-absorption
capabilities
fabricated
by
means
laser
powder
bed
fusion
technology.
Cavity
resonators
with
internally
extended
tubes
configuration
were
selected
as
primary
units.
The
performance
HMCM
was
investigated
systematically
through
experimental,
numerical,
theoretical
methods.
Crashworthiness
design
optimization
on
implemented
to
explore
effect
geometrical
parameters
including
distance
ratio
wall
thickness
distribution
crushing
resistance.
It
determined
specific
configurations
in
these
significantly
enhance
mechanism
dissipating
HMCM.
Furthermore,
designed
has
been
experimentally,
numerically,
theoretically
proven
possess
quasi-perfect
sound
absorption
target
range
425
Hz
553
average
coefficient
exceeding
0.9.
Overall,
work
not
only
offers
promising
solution
designing
but
also
highlights
potential
additive
manufacturing
techniques
development
such
sophisticated
materials.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 12, 2024
Abstract
Multifunctional
materials
that
integrate
noise
absorption,
high
stiffness,
and
isotropic
elasticity
are
increasingly
sought
after
for
all‐in‐one
applications.
However,
conventional
microlattice
metamaterials—whether
truss,
shell,
or
plate—often
excel
in
only
one
property
struggle
to
embrace
all
due
structural
constraints.
Herein,
this
work
presents
a
new
additive
concept—via
interweaving
different
lattice
architectures
simultaneously
enhance
both
sound
absorption
elastic
properties
microlattices.
The
interwoven
design
strategy
starts
by
analyzing
particular
structure,
introducing
reinforcing
structure
partition
air
domains,
compensate
local
stiffness
deficiencies,
improve
integrity.
As
proof
of
concept,
the
focus
is
on
using
an
octet
truss
as
original
phase
customized
phase.
methodology
enables
highly
customizable
geometric
configurations,
harnessing
machine
learning
multi‐objective
optimization
achieve
superior
multifunctional
performance.
Experimental
results
show
these
optimized
microlattices
overcome
traditional
physical
limitations,
broadband
isotropy.
from
finely
tuned
over‐damped
resonant
response,
while
remarkable
performance
attributed
efficient
load
transfer
complementary
configurations.
This
unveils
groundbreaking
paradigm
innovative
materials.
Advanced Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 20, 2025
Abstract
Lattice
metamaterials
emerge
as
advanced
architected
materials
with
superior
physical
properties
and
significant
potential
for
lightweight
applications.
Recent
developments
in
additive
manufacturing
(AM)
techniques
facilitate
the
of
lattice
intricate
microarchitectures
promote
their
applications
multi‐physical
scenarios.
Previous
reviews
on
have
largely
focused
a
specific/single
field,
limited
discussion
properties,
interaction
mechanisms,
multifunctional
Accordingly,
this
article
critically
design
principles,
structure‐mechanism‐property
relationships,
enabled
by
AM
techniques.
First,
are
categorized
into
homogeneous
lattices,
inhomogeneous
other
forms,
whose
principles
processes
discussed,
including
benefits
drawbacks
different
fabricating
types
lattices.
Subsequently,
structure–mechanism–property
relationships
mechanisms
range
fields,
mechanical,
acoustic,
electromagnetic/optical,
thermal
disciplines,
summarized
to
reveal
critical
principles.
Moreover,
metamaterials,
such
sound
absorbers,
insulators,
manipulators,
sensors,
actuators,
soft
robots,
management,
invisible
cloaks,
biomedical
implants,
enumerated.
These
provide
effective
guidelines
