4D Printing of Self-Healing, Thermally, and Near-Infrared Light-Responsive Granular Hydrogels with Segmental Directed Movement for Soft Robotic
ACS Applied Polymer Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 29, 2025
Язык: Английский
Beyond 3D: Smart Material Systems for Microscale 4D Printing
Advanced Materials Technologies,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 11, 2025
Abstract
4D
printing
combines
advancements
in
3D
with
smart
materials
that
change
properties
response
to
external
stimuli,
enabling
the
fabrication
of
functional
devices
directly
from
printer.
Microscale
is
rapidly
growing,
driving
discovery
and
applications
new
strategies.
The
interest
microscale
comes
its
potential
propel
industrial
transformation
across
different
sectors,
ranging
advanced
healthcare
cryptography.
However,
this
requires
rational
design
a
good
understanding
material
response.
This
review
starts
by
describing
for
printing.
technologies
micrometer
resolution
their
use
are
then
discussed.
focus
shifts
stimuli
respond
to,
mechanism
behind
obtained
shape
changes
respect
applied
methods
implemented
so
far
realize
complex
changing
behaviors.
Examples
within
sensing,
microactuation,
data
encryption,
cargo
transport
shown.
After
discussing
current
challenges
mitigation
strategies,
suggestions
on
direction
field
can
take
given,
starting
systematic
iterative
approach
developing
microstructures.
Язык: Английский
Stimulus-responsive gradient hydrogel micro-actuators fabricated by two-photon polymerization-based 4D printing
Nanotechnology Reviews,
Год журнала:
2025,
Номер
14(1)
Опубликована: Янв. 1, 2025
Abstract
The
growing
field
of
4D
printing
has
spurred
extensive
exploration
into
applications
stimulus-responsive
materials,
such
as
hydrogels
for
micro-actuators.
However,
the
hydrogel-based
micro-actuators
fabricated
by
one-step,
single-material
are
typically
bilayer,
and
their
actuation
capabilities
limited.
This
study
proposes
a
novel
gradient
strategy
via
two-photon
polymerization
(2PP)
based
to
enhance
performance
hydrogel
feasibility
this
approach
was
demonstrated
investigating
shrinkage
rates
elastic
moduli
poly(
N
-isopropylacrylamide)
(PNIPAm)
micro-cuboids
printed
at
different
laser
doses
using
confocal
scanning
microscope
atomic
force
microscopy
nano-indentation
respectively.
2PP-based
used
fabricate
bilayer
trilayer
PNIPAm
micro-actuators,
with
dose
programmed
modulate
crosslinking
degree
each
layer.
These
were
actuated
near-infrared
(NIR)
light
in
gold
nanorods
(AuNRs)
solutions.
effects
NIR
powers,
micro-actuator
sizes,
layer
thicknesses
on
behaviors
systematically
investigated.
Compared
12-µm-thickness
micro-actuation,
introduction
transitional
one
significantly
enhanced
amplitude
speed
(the
bending
angle
curvature
increased
about
150
70%,
respectively,
cycle
time
recovery
shortened
35%).
advancements
have
significant
implications
microscale
materials
enhancing
applications.
Язык: Английский
飞秒激光制备双材料微型致动器的方法研究
梁凯文 Liang Kaiwen,
潘登 Pan Deng,
范胜颖 Fan Shengying
и другие.
Chinese Journal of Lasers,
Год журнала:
2025,
Номер
52(8), С. 0802403 - 0802403
Опубликована: Янв. 1, 2025
Recent Progress in High‐performance Flexible Pressure Sensors: Materials, Design, Fabrication, and Applications
Advanced Materials Technologies,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 26, 2025
Abstract
Flexible
pressure
sensors
hold
significant
potential
for
applications
in
health
monitoring,
human‐machine
interaction,
electronic
skin,
and
artificial
intelligence
due
to
their
high
sensitivity,
flexibility,
lightweight,
ease
of
signal
acquisition.
In
recent
years,
extensive
research
into
sensor
materials,
structures,
manufacturing
technologies
has
led
the
development
various
high‐performance
flexible
sensors.
Currently,
optimizing
sensing
performance
involves
selecting
appropriate
functional
designing
deformable
employing
high‐precision
techniques.
This
paper
reviews
advancements
sensors,
focusing
on
mechanisms,
microstructure
design,
technologies,
application
fields.
First,
mechanisms
operating
different
modes
are
introduced,
several
widely
used
materials
discussed.
Particular
attention
is
given
role
geometric
design
enhancing
performance.
Next,
influence
analyzed
summarized.
addition,
emerging
presented.
Finally,
concludes
by
highlighting
prospects
major
challenges
achieving
Язык: Английский
Integrative Modeling and Experimental Insights into 3D and 4D Printing Technologies
Polymers,
Год журнала:
2024,
Номер
16(19), С. 2686 - 2686
Опубликована: Сен. 24, 2024
This
review
focuses
on
advancements
in
polymer
science
as
it
relates
to
three-dimensional
(3D)
and
four-dimensional
(4D)
printing
technologies,
with
a
specific
emphasis
applications
the
biomedical
field.
While
acknowledging
breadth
of
3D
4D
applications,
this
paper
concentrates
use
polymers
creating
devices
challenges
associated
their
implementation.
It
explores
integrative
modeling
experimental
insights
driving
innovations
these
fields,
focusing
sustainable
manufacturing
biodegradable
polymers,
comparative
analysis
techniques,
devices.
Additionally,
examines
materials
used
both
printing,
offering
detailed
comparison
properties
applications.
By
highlighting
transformative
potential
technologies
various
industrial
medical
underscores
importance
continued
research
development.
The
scope
also
includes
an
overview
future
directions
address
current
challenges,
enhance
material
capabilities,
explore
practical
Язык: Английский