Polymers,
Год журнала:
2024,
Номер
16(23), С. 3298 - 3298
Опубликована: Ноя. 26, 2024
Self-oscillation,
a
control
approach
inspired
by
biological
systems,
demonstrates
an
autonomous,
continuous,
and
regular
response
to
constant
external
environmental
stimuli.
Until
now,
most
self-oscillation
systems
have
relied
on
static
environment
that
continuously
supplies
energy,
while
materials
typically
absorb
ambient
energy
only
intermittently.
In
this
article,
we
propose
innovative
of
liquid
crystal
elastomer
(LCE)
fiber-slide
system
driven
self-flickering
light
source,
which
can
efficiently
regulate
the
input
in
sync
with
self-oscillating
behavior
under
voltage.
This
primarily
consists
photo-responsive
LCE
fiber,
slider
includes
conductive
segment
insulating
segment,
track.
Using
dynamic
model,
derive
governing
equation
for
motion
fiber-slider
system.
Numerical
simulations
show
voltage
exhibits
two
distinct
phases,
namely
stationary
phase
phase.
The
occurs
due
photo-induced
contraction
fiber
when
source
is
activated.
We
also
investigate
critical
conditions
required
initiate
self-oscillation,
examine
key
parameters
influencing
its
frequency
amplitude.
Unlike
continuous
release
from
field
our
dynamically
adjusts
synchronize
behavior.
Our
design
features
advantages
such
as
spontaneous
periodic
lighting,
simple
structure,
efficiency,
ease
operation.
It
shows
significant
promise
circuit
monitoring
devices,
optical
applications.
Physical review. E,
Год журнала:
2024,
Номер
109(2)
Опубликована: Фев. 5, 2024
Self-oscillating
coupled
systems
possess
the
ability
to
actively
absorb
external
environmental
energy
sustain
their
motion.
This
quality
endows
them
with
autonomy
and
sustainability,
making
have
application
value
in
fields
of
synchronization
clustering,
thereby
furthering
research
exploration
these
domains.
Building
upon
foundation
thermal
responsive
liquid
crystal
elastomer-based
(LCE-based)
spring
oscillators,
a
synchronous
system
comprising
three
LCE-based
oscillators
interconnected
by
springs
is
established.
In
this
paper,
phenomenon
described,
self-oscillation
mechanism
revealed.
The
results
indicate
that
varying
parameters
initial
conditions,
patterns
emerge,
namely,
full
mode,
partial
asynchronous
mode.
For
strongly
interacting
systems,
mode
always
prevails,
while
for
weak
interactions,
adjustment
velocities
magnitude
direction
yields
patterns.
Additionally,
study
explores
impact
several
parameters,
including
LCE
elasticity
coefficient
coefficient,
on
amplitude,
frequency,
system.
findings
paper
can
enhance
our
understanding
behavior
multiple
mutually
promising
applications
harvesting,
soft
robotics,
signal
monitoring,
various
other
fields.
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Фев. 20, 2024
Abstract
Responsive
materials
possess
the
inherent
capacity
to
autonomously
sense
and
respond
various
external
stimuli,
demonstrating
physical
intelligence.
Among
diverse
array
of
responsive
materials,
liquid
crystalline
polymers
(LCPs)
stand
out
for
their
remarkable
reversible
stimuli‐responsive
shape‐morphing
properties
potential
creating
soft
robots.
While
numerous
reviews
have
extensively
detailed
progress
in
developing
LCP‐based
actuators
robots,
there
exists
a
need
comprehensive
summaries
that
elucidate
underlying
principles
governing
actuation
how
intelligence
is
embedded
within
these
systems.
This
review
provides
overview
recent
advancements
robots
endowed
with
using
LCPs.
structured
around
stimulus
conditions
categorizes
studies
involving
LCPs
based
on
fundamental
control
stimulation
logic
approach.
Specifically,
three
main
categories
are
examined:
systems
changing
those
operating
under
constant
equip
learning
capabilities.
Furthermore,
persisting
challenges
be
addressed
outlined
discuss
future
avenues
research
this
dynamic
field.
Abstract
The
increasing
demand
for
the
multidimensional
and
dynamic
control
of
light
has
spurred
development
stimuli‐responsive,
reconfigurable,
programmable
optical
systems.
Liquid
crystals
(LCs),
which
combine
liquid‐like
stimuli‐responsiveness
crystal‐like
orientational
ordering,
have
emerged
as
highly
appealing
soft
materials.
Owing
to
their
exceptional
performance
functionalities,
they
are
becoming
incredibly
important
materials
in
active
planar
optics
photonics.
Additionally,
silk
proteins,
luminescent
materials,
metasurfaces
exhibit
properties,
enabling
remarkable
multifunctional
applications.
This
review
focuses
on
advancements
stimuli‐responsive
including
LCs,
well
some
these
paired
with
LCs.
Their
attractive
tunable
applications
photonics,
along
great
potential
future
systems,
also
emphasized.
Communications Chemistry,
Год журнала:
2024,
Номер
7(1)
Опубликована: Март 19, 2024
Abstract
Self-sustainable
autonomous
locomotion
is
a
non-equilibrium
phenomenon
and
an
advanced
intelligence
of
soft-bodied
organisms
that
exhibit
the
abilities
perception,
feedback,
decision-making,
self-sustainment.
However,
artificial
self-sustaining
architectures
are
often
derived
from
algorithms
onboard
modules
soft
robots,
resulting
in
complex
fabrication,
limited
mobility,
low
sensitivity.
actuators
have
emerged
as
naturally
evolving
systems
do
not
require
human
intervention.
With
shape-morphing
materials
integrating
their
structural
design,
can
direct
responses
to
environmental
changes
achieve
robust
motions
under
sustained
stimulation.
This
perspective
article
discusses
recent
advances
self-sustainable
actuators.
Specifically,
materials,
motion
characteristics,
built-in
negative
feedback
loops,
constant
stimulus
response
patterns
used
summarized.
Artificial
concepts,
modes,
deformation-induced
functional
applications
described.
The
current
challenges
future
opportunities
for
actuation
also
discussed.
Abstract
Electrochromic
(EC)
technology
has
been
regarded
as
a
promising
energy‐saving
in
various
applications,
including
smart
windows,
displays,
thermal
management,
rear
views,
etc.
Benefiting
from
the
progress
electrochromic
material
synthesis,
electrode
fabrication,
and
device
configuration
design,
focus
community
gradually
shifted
to
multifunctional
devices
(ECDs)
era
of
Internet
Things.
Multifunctional
ECDs,
such
energy
storage
devices,
multi‐color
deformable
have
showcased
ability
expand
potential
applications.
In
this
review,
available
configurations,
performance
indexes
advanced
characterization
techniques
for
ECDs
are
introduced
classified
accordingly.
The
applications
storage,
multicolor
self‐chargeable
actuators,
etc.,
exemplified.
future
development
trends
perspectives
also
overlooked.
aim
review
is
guide
inspire
further
efforts
exploration
novel
ECDs.
eScience,
Год журнала:
2024,
Номер
4(5), С. 100250 - 100250
Опубликована: Март 1, 2024
Soft
actuators
are
constituted
by
a
type
of
intelligent
materials,
and
they
can
generate
reversible
mechanical
motions
under
external
stimuli.
They
usually
achieve
continuous
actuation
manual
turning
on
or
off
the
power
supply,
which
significantly
increases
operation
complexity.
In
contrast,
self-oscillating
autonomous
constant
stimuli,
have
recently
attained
great
advancements,
as
well
promoted
development
soft
robotics.
this
review,
latest
achievements
oscillators
summarized.
First,
mechanisms
mainly
including
oscillating
chemical
reactions
self-shadowing-induced
negative
feedback
loops
discussed.
The
constructed
with
various
materials
configurations,
driven
different
stimuli
applied
in
fields
then
presented
detail.
Finally,
difficulties
hopes
presented.
Overall,
stage
vigorous
development,
we
believe
that
future,
will
be
used
make
many
scenarios
more
autonomous.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 19, 2024
Abstract
The
efforts
in
soft
materials
actuators
that
can
generate
driving
deformation
under
external
energy
stimulation
have
promoted
the
rapid
development
miniature
sized
robotics.
Recently,
with
continuous
and
autonomous
actuation
behavior
constant
are
highly
sought
after.
Light‐fueled
self‐oscillators
based
on
self‐shadowing
effect
triggered
by
their
light‐induced
provide
an
effective
scheme.
However,
grand
challenges
remain
light‐driven
self‐actuators
multi‐directional
controllable
operate
low
power
density
air.
Here,
this
study
reports
a
MXene‐based
multilayer
actuator
generates
self‐sustained
robotic
motion
upon
light
intensity–
50
mW
cm
−2
(half
Sun).
self‐track
sources
continuously
oscillate
while
incident
angle
is
changed.
exhibits
high
adaptation
to
types
of
sources,
including
inherence
coherence
different
wavelengths.
Diverse
applications
demonstrated,
signal
transmitter
beam
reflection,
self‐propelled
sailboat,
light‐to‐mechanical
motor,
robots
biomimetic
movements.
results
offer
new
insights
for
light‐fueled
controllability
low‐intensity
requirement
its
potential
application
prospect.
Abstract
More
recently,
soft
actuators
have
evoked
great
interest
in
the
next
generation
of
robots.
Despite
significant
progress,
majority
current
suffer
from
lack
real‐time
sensory
feedback
and
self‐control
functions,
prohibiting
their
effective
sensing
multitasking
functions.
Therefore,
this
work,
a
near‐infrared‐driven
bimorph
membrane,
with
self‐sensing
loop
control
is
produced
by
layer
(LBL)
assembling
MXene/PDDA
(PM)
onto
liquid
crystal
elastomer
(LCE)
film.
The
versatile
integration
strategy
successfully
prevents
separation
issues
that
arise
moduli
mismatch
between
actuating
layers,
ultimately
resulting
stable
tightly
bonded
interface
adhesion.
As
result,
resultant
membrane
exhibited
excellent
mechanical
toughness
(tensile
strengths
equal
to
16.3
MPa
(||)),
strong
actuation
properties
(actuation
stress
1.56
MPa),
(gauge
factor
4.72)
capabilities.
When
applying
near‐infrared
(NIR)
laser
control,
system
can
perform
grasping,
traction,
crawling
movements.
Furthermore,
wing
closed‐loop
controlled
motion
are
demonstrated
combination
insect
microcontroller
unit
(MCU)
models.
remote
precision
capabilities
actuator
pave
way
for
complex
precise
task
modulation
future.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(51)
Опубликована: Сен. 11, 2023
The
self-assembly
of
liquid
crystals
(LCs)
is
a
fascinating
method
for
controlling
the
organization
discrete
molecules
into
nanostructured
functional
materials.
Although
LCs
are
traditionally
processed
in
thin
films,
their
confinement
within
micrometre-sized
droplets
has
recently
revealed
new
properties
and
functions,
paving
way
next-generation
soft
responsive
These
recent
findings
have
unlocked
wealth
unprecedented
applications
photonics
(e.g.
reflectors,
lasing
materials),
sensing
biomolecule
pathogen
detection),
robotics
micropumps,
artificial
muscles),
beyond.
This
Minireview
focuses
on
developments
LC
emulsion
designs
highlights
variety
novel
potential
applications.
Perspectives
opportunities
directions
implementing
emulsions
future
innovative
technologies
also
provided.
