High‐efficiency design of multifunctional radar absorbing honeycomb structures for enhanced ultrathin, broadband, and load‐bearing performance
Polymer Composites,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 13, 2025
Abstract
With
the
rapid
advancements
in
anti‐stealth
technology
and
electronic
reliability,
radar
absorbing
structures
urgently
need
to
achieve
electromagnetic‐mechanical
enhancement.
However,
drawback
of
current
frequency
selective
surface
(FSS)
film
still
affects
interfacial
strength
structures,
limiting
improvement
mechanical
performance.
This
work
proposed
an
ultrathin,
broadband,
load‐bearing
integrated
honeycomb
structure
(RAHS),
fabricated
via
a
high‐efficiency
multi‐manufacturing
approach,
replacing
traditional
FSS
film.
The
result
reveals
that
optimizing
structural
geometry
resistance
interlocked
functional
(F‐HC),
FSS‐laminate,
polylactic
acid
lattice
cores,
optimal
RAHS
can
excellent
absorption
bandwidth
35.30
GHz
(absorptivity>87%)
under
TE
polarization
at
thickness
only
9
mm
with
density
0.55
kg
m
−3
as
well
possess
outstanding
compressive
21.9
MPa
energy
6.43
MJ
,
increasing
200%
compared
RASH
(without
cores).
Notably,
electromagnetic
mechanism
demonstrates
synergistic
effects
originate
from
loss
capabilities
F‐HC
L‐C
resonance
between
square
loop
patch,
gradient
impedance
matching
FSS‐laminate
cores.
multi‐stage
effect
hexagonal
cores
significantly
enhances
provides
pathway
for
achieving
high‐performance
structures.
Highlights
is
designed
integration.
approach
effectively
resolved
drawbacks
Filling
enhanced
by
200%,
793%.
performance
RAHS.
Electromagnetic
synergy
improved
broadband
Язык: Английский
Mechanical properties of 3D printing novel bionic hierarchical cellular structure inspired by Raphia seed: Experimental, simulation and theoretical investigation
Journal of Materials Research and Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 1, 2025
Язык: Английский
Influence of 3D-printed cellular shoe soles on plantar pressure during running − Experimental and numerical studies
Journal of Applied Biomedicine,
Год журнала:
2024,
Номер
44(4), С. 858 - 873
Опубликована: Окт. 1, 2024
Язык: Английский
Soft Magnetoelastic Tactile Multi-Sensors with Energy-Absorbing Properties for Self-Powered Human–Machine Interfaces
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 11, 2024
Tactile
sensors
play
a
key
role
in
human-machine
interfaces
(HMIs)
for
augmented
and
virtual
reality,
point-of-care
devices,
human-robot
collaboration,
which
show
the
promise
of
revolutionizing
our
ways
life.
Here,
we
present
sensor
(EMTS)
that
utilizes
magnetoelastic
effect
soft
metamaterial
to
convert
mechanical
pressure
into
electrical
signals.
With
this
unique
mechanism,
proposed
EMTS
simultaneously
possesses
self-powering,
waterproof,
compliant
features.
The
is
essentially
porous
magnetoelastomer
structure
designed
based
on
Fourier
series
expansion,
allows
programmable
response
sensing
performance
EMTS.
Fabricated
by
simple
3D-printed
molds,
also
holds
potential
low-cost
production.
Particularly,
comes
with
selectable
buckling
instabilities
can
significantly
enhance
biomechanical-to-electrical
energy
conversion.
Also,
embedded
magnetic
microparticles,
energy-absorbing
greatly
improved,
highly
beneficial
HMIs.
To
pursue
practical
applications,
EMTSs
are
further
integrated
two
systems
as
control
perception
modules.
It
demonstrated
able
identify
different
hand
gestures
lighting
system
even
high-humidity
environment.
stands
out
its
superior
capability
simultaneous
impact
absorption
drop
tests.
Overall,
compelling
array
features,
presented
gives
impetus
multi-sensing
technology
practically
enables
variety
HMI
applications.
Язык: Английский
Mechanically Robust and Highly Stretchable Acrylated Glycerol Polyether Elastomers for Vat Photopolymerization 3D Printing
ACS Applied Polymer Materials,
Год журнала:
2024,
Номер
6(21), С. 13268 - 13280
Опубликована: Окт. 22, 2024
Additive
manufacturing
(AM)
elastomers
are
highly
desirable
due
to
their
huge
potential
applications
ranging
from
car
industry
and
wearable
electronics
tissue
engineering.
However,
photocurable
AM
elastomers,
which
could
well
meet
the
requirements
for
vat
photopolymerization
(VPP)
3D
printing
in
low-cost
high
resolution
as
high-performance,
remain
rare.
Herein,
a
glycerol
polyether
(GP)-based
elastomer
was
constructed
commercially
friendly
industrially
feasible
solution.
The
GP
acrylate
(GPA)
oligomer
prepared
at
kilogram
scale
via
one-step
esterification
yield
(>93%)
low-priced
GP.
Then,
photoresin
of
achieved
low
viscosity
(258
mPa·s)
but
performance
by
incorporating
with
biocompatible
isobornyl
(IBOA)
N-vinylpyrrolidone
(NVP).
units
acted
soft
segments,
while
introduction
UV-responsive
IBOA
NVP
into
GPA
cross-network
resulted
strength
toughness
good
stress
dispersion.
tensile
elongation
break
can
reach
17.8
MPa
809.3%,
respectively.
excellent
compression
fatigue
resistance
enabled
1500
consecutive
cycles
100%
strain.
Moreover,
this
compatible
both
VPP-based
digital
light
processing
stereo
lithography
appearance
techniques,
resulting
printed
objects
50
μm
fabrication
comparable
mechanical
properties.
What
is
more,
cytotoxicity
evaluation
acute
dermal
irritation
skin
sensitization
all
exhibited
biocompatibility,
further
enhanced
great
biomedical
fields.
Язык: Английский