Frontiers in Materials,
Journal Year:
2025,
Volume and Issue:
12
Published: March 13, 2025
Anisotropic
stimuli-responsive
polymeric
materials
(ASRPM)
exhibit
distinct
physical
and
chemical
properties
along
various
orientations
can
respond
to
external
stimuli,
demonstrating
exceptional
adaptability
functional
integration
capabilities.
As
research
advances,
new
discoveries
applications
continue
emerge,
further
enhancing
the
appeal
of
these
materials.
Despite
an
increase
in
related
publications,
there
remains
a
relative
scarcity
systematic
summaries.
In
this
mini-review,
we
summarize
advancements
field
over
past
decade,
focusing
on
structural
properties,
fabrication
methods,
advantages,
potential
ASRPM.
We
present
synthesized
overview
through
illustrative
charts,
aiming
provide
readers
with
representative
snapshot
dynamic
landscape.
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
34(7)
Published: Nov. 3, 2023
Abstract
Advanced
sensation
and
actuation
abilities
of
various
living
organisms
in
nature
have
inspired
researchers
to
design
bioinspired
self‐sensing
soft
actuators.
However,
the
majority
conventional
actuators
primarily
possess
capabilities
while
lacking
a
real‐time
sensing
signal
feedback.
Here,
promising
strategy
is
reported
develop
highly
stretchable
conductive
hydrogels
for
actuators,
which
integrate
strain‐sensing
functions
into
single
materials
system.
The
are
designed
fabricated
by
situ
copolymerization
amino‐functionalized
MXene‐encapsulated
liquid
metal
nanodroplets
(LM@A‐MXene)
poly(
N
‐isopropylacrylamide)
with
controllable
activated
nanogels
as
nano‐cross‐linkers.
resulting
hydrogel
presents
compacted
conducting
network
porous
microstructure,
giving
rise
robust
integration
high
conductivity,
excellent
strain
sensitivity,
broad
stretchability,
stability,
fast
response
speed.
Interestingly,
gradient
structure,
formed
self‐precipitation
LM@A‐MXene,
endows
shape‐programmable
actuation,
light‐driven
remote
control,
function.
As
proof‐of‐concept
application,
gripper
based
on
developed,
can
not
only
grasp,
lift,
release
objects,
but
also
perceive
every
movement
state
monitoring
resistance
changes.
proposed
actuator
offer
new
insights
developing
smart
robotics
other
artificial
intelligent
devices.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(23)
Published: March 16, 2023
Abstract
Many
living
organisms
have
the
superb
structure‐editing
capacity
for
better
adaptation
in
dynamic
environments
over
course
of
their
life
cycle.
However,
it's
still
challenging
to
replicate
such
natural
into
artificial
hydrogel
actuating
systems
enhancing
environment‐interactive
functions.
Herein,
we
learn
from
metamorphosis
development
glowing
octopus
construct
proof‐of‐concept
fluorescent
actuators
with
life‐like
by
developing
a
universal
stepwise
inside‐out
growth
strategy.
These
could
perform
origami‐like
3D
shape
deformation
and
also
enable
postnatal
new
structures
adapt
additional
states
different
visual
information
delivery
using
environment
keys
(e.g.,
temperature,
pH).
This
study
opens
previously
unidentified‐avenues
bio‐inspired
actuators/robotics
extends
potential
uses
encryption.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(28)
Published: April 23, 2024
Abstract
Self‐sustained
motions
are
widespread
in
biological
systems
by
harvesting
energy
from
surrounding
environments,
which
inspire
scientists
to
develop
autonomous
soft
robots.
However,
most‐existing
robots
require
dynamic
heterogeneous
stimuli
or
complex
fabrication
with
different
components.
Recently,
control
of
topological
geometry
has
been
promising
afford
physical
intelligence
and
thus
life‐like
motions.
Reported
here
a
series
closed
twisted
ribbon
robots,
exhibit
self‐sustained
flipping
rotation
under
constant
light
irradiation.
Both
Möbius
strip
Seifert
devised
for
the
first
time
using
an
identical
hydrogel,
responds
irradiation
on
either
side.
Experiment
simulation
results
indicate
that
self‐regulated
hydrogel
related
fast
reversible
response
muscle‐like
gel,
self‐shadowing
effect,
topology‐facilitated
refresh
light‐exposed
regions.
The
motion
speeds
directions
can
be
tuned
over
wide
range.
These
hydrogels
further
applied
execute
specific
tasks
aqueous
such
as
collecting
plastic
balls,
climbing
vertical
rod,
transporting
objects.
This
work
presents
new
design
principle
benefiting
material
topology
geometry,
may
inspirative
robotics
community.
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
61(35)
Published: June 24, 2022
Reported
here
is
a
multi-response
anisotropic
poly(N-isopropylacrylamide)
hydrogel
developed
by
using
rotating
magnetic
field
to
align
double
stacks
(MDSs)
that
are
fixed
polymerization.
The
magneto-orientation
of
MDSs
originates
from
the
unique
structure
with
γ-Fe
Molecules,
Journal Year:
2023,
Volume and Issue:
28(15), P. 5931 - 5931
Published: Aug. 7, 2023
Diffusion
is
one
of
the
key
nature
processes
which
plays
an
important
role
in
respiration,
digestion,
and
nutrient
transport
cells.
In
this
regard,
present
article
aims
to
review
various
diffusion
approaches
used
fabricate
different
functional
materials
based
on
hydrogels,
unique
examples
that
control
diffusion.
They
have
found
applications
fields
such
as
drug
encapsulation
delivery,
delivery
agriculture,
developing
for
regenerative
medicine,
creating
stimuli-responsive
soft
robotics
microrobotics.
addition,
mechanisms
release
kinetics
tools
material
design
are
discussed.
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
34(10)
Published: Nov. 22, 2023
Abstract
Material
designs
for
wearable
sensors
are
increasingly
important
due
to
variable
application
scenarios
and
environmental
disturbances.
The
high
temperatures
pose
a
significant
challenge
the
performance
of
sensing
materials.
reasonable
anisotropic
structure
in
materials
is
recognized
as
promising
approach
address
this
challenge.
Precise
control
orientation
material
remains
difficult,
owing
entropy
effect.
In
work,
tunable
triboelectric
aerogel
via
an
situ
coupled
magnetic
alignment
protonation
reduction
strategy
demonstrated.
designed
with
fitting
degree
98%
can
effectively
suppress
electron
thermionic
emission,
which
enables
surface
charge
density
reach
75
µC
m
−2
at
300
°C.
Such
perfect
coordination
between
self‐powered
thermostability
innovates
multifunctional
design
temperatures,
allowing
aramid‐based
be
candidate
advanced
applications
military
aerospace
fields.
ACS Nano,
Journal Year:
2023,
Volume and Issue:
17(23), P. 24042 - 24054
Published: Nov. 21, 2023
Multistimuli
responsiveness
and
programmable
shape
recovery
are
crucial
for
soft
actuators
in
robotics,
electronics,
wearables.
However,
existing
strategies
actuation
cannot
attain
power-free
retention
after
removing
the
external
energy
supply.
Here,
a
self-assembled
density
deposition
method
was
developed
to
fabricate
an
electrothermal-NIR-magnetic
triple-response
actuator
which
composed
of
cellulose
nanofiber/poly(vinyl
alcohol)/liquid
metal
(CNF/PVA/LM)
magnetic
polydimethylsiloxane
(MPDMS)
layer.
Interestingly,
large
deformation
can
be
controllably
fixed
temporary
configuration
will
recovered
under
field
due
thermal-plastic
transferring
behavior
CNF/PVA/LM.
Rolling
robot
prepared
based
on
exhibits
good
ability
avoid
obstacles.
In
addition,
object
handling
release
capabilities
carrier
robots
demonstrate
that
this
approach
contribute
better
understanding
how
more
rationally
utilize
various
stimuli
application
purposes.
