Applied Sciences,
Journal Year:
2022,
Volume and Issue:
12(21), P. 10708 - 10708
Published: Oct. 22, 2022
A
method
to
determine
the
power
of
a
continuous
wave
laser
from
photothermal
heating
poly(dimethyl
siloxane)
film
is
reported.
The
base
was
doped
with
oil
red
O
and
cured
on
surface
relief
grating.
grating
period
shown
increase
proportional
temperature
by
monitoring
decrease
in
diffraction
angle
probe
beam.
10s
illumination
(CW)
pump
beam
absorbed
increased
film’s
temperature,
which
resulted
local
strain
that
could
be
modeled
using
two-dimensional
heat
kernel.
amplitude
transient
response
found
linearly
correlated
power.
Applied Physics Reviews,
Journal Year:
2022,
Volume and Issue:
9(1)
Published: Jan. 3, 2022
Liquid
crystal
elastomers
(LCEs),
owing
to
their
intrinsic
anisotropic
property
and
capability
of
generating
programmable
complex
morphologies
under
heat,
have
been
widely
used
for
applications
ranging
from
soft
robotics,
photonic
devices,
cell
culture,
tissue
engineering.
To
fulfill
the
various
circumstances,
high
actuation
efficiency,
mechanical
strength,
large
heat
electrical
conductivity,
or
responses
multiple
stimuli
are
required.
Therefore,
design
fabrication
LCE
composites
a
promising
strategy
enhanced
physical
properties
offer
additional
LCEs
such
as
light,
electric,
magnetic
fields.
In
this
review,
we
focus
on
recent
advances
in
composites,
where
defined
elastomeric
materials
broader
context.
Classic
with
metallic
nanoparticles,
particles,
liquid
metal,
carbon
nanotubes,
graphene
its
derivative,
black,
cellulose
nanocrystals
within
polymer
network
can
provide
unique
anisotropy
will
be
discussed.
We
conclude
challenges
future
research
opportunities.
Materials Horizons,
Journal Year:
2023,
Volume and Issue:
10(9), P. 3325 - 3350
Published: Jan. 1, 2023
This
review
provides
a
brief
overview
of
the
recent
developments
in
hydrogel
systems
that
respond
dynamically
to
various
stimuli,
including
some
interesting
fabrication
strategies,
and
their
application
cardiac,
bone,
neural
tissue
regeneration.
Deleted Journal,
Journal Year:
2024,
Volume and Issue:
2(1)
Published: Feb. 1, 2024
Abstract
Liquid
crystal
polymers
(LCPs)
have
gained
tremendous
attention
in
recent
years
due
to
their
great
potentials
from
fabrication
of
responsive
actuators
and
sensors
construction
intelligent
soft
robotic
light
modulators.
However,
conventional
LCPs
with
permanent
cross‐links
present
tedious
unmodifiable
stimuli‐responsiveness.
Recently,
dynamic
bonds
capable
reversibly
break
reform
been
integrated
into
LCP,
imparting
intrinsic
characteristics.
The
LCP
possesses
unprecedented
diverse
functionalities
including
reprogrammability,
recyclability,
self‐healing
ability,
becoming
much
more
adaptive
surrounding
environmental
changes
compared
the
counterpart.
In
this
review,
progress
bond‐based
is
summarized.
mechanism,
preparation,
based
on
noncovalent
bond
(DNCB)
covalent
(DCB)
are
poised
be
discussed,
followed
by
introducing
emergent
combining
both
DNCB
DCB.
Consequently,
unique
will
given.
Finally,
outlooks
development
presented.
Progress in Polymer Science,
Journal Year:
2024,
Volume and Issue:
153, P. 101829 - 101829
Published: May 10, 2024
Liquid
crystal
elastomers
(LCEs)
have
long
held
significant
promise
as
materials
for
artificial
muscles
and
smart
actuators.
Recent
advancements
in
this
field
introduced
innovative
LCE
structures
at
various
scales,
resulting
novel
properties
functionalities
that
further
accentuate
their
actuation
advantages,
bolstering
potential
future
soft
systems.
The
ongoing
pursuit
of
enhanced
performance
functionality
actuators,
essential
advancing
them
towards
superior
material-based
machines
devices,
is
intricately
linked
to
the
understanding
fundamental
structure-property-function
relationships.
This
review
provides
a
perspective
on
these
relationships
across
multiple
structural
levels,
encompassing
chemical
structures,
mesophase
micro-to-macroscale
programmed
structures.
It
delves
into
impact
key
actuation-related
properties,
features,
functionalities.
aspires
provide
valuable
insights
design
high-performance
development
exceptional
modes
behaviors,
expansion
achievable
functionality.
Communications Chemistry,
Journal Year:
2024,
Volume and Issue:
7(1)
Published: March 14, 2024
Liquid
crystal
elastomers
(LCEs)
are
shape-morphing
materials
that
demonstrate
reversible
actuation
when
exposed
to
external
stimuli,
such
as
light
or
heat.
The
actuation's
complexity
depends
heavily
on
the
instilled
liquid
alignment,
programmed
into
material
using
various
shape-programming
processes.
As
an
unavoidable
part
of
LCE
synthesis,
these
also
introduce
geometrical
and
output
restrictions
dictate
final
applicability.
Considering
LCE's
future
implementation
in
real-life
applications,
it
is
reasonable
explore
limiting
factors.
This
review
offers
a
brief
overview
current
methods
relation
challenges
employing
LCEs
soft,
shape-memory
components
devices.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(2), P. 2788 - 2801
Published: Jan. 3, 2024
Herein,
a
light-responsive
and
light-induced
bond-exchange-reaction
(BER)-capable
actuator
of
the
monodomain
liquid
crystal
elastomer
(xMLCEazo),
developed
using
main-chain
mesogenic
oligomers
containing
azobenzene
allyl
sulfide
linkages,
is
investigated.
Large
quantities
dithiol
linkages
are
incorporated
into
oligomer
prepared
via
thiol–acrylate
Michael
addition
polymerization
(TAMAP).
The
xMLCEazo
film
generated
visible-light-induced
BER
drawn
polydomain
xLCEazo
(xPLCEazo)
TAMAP
tetrathiol
cross-linkers
diacrylate-terminated
oligomers.
exhibits
large
length
actuation
(38%)
through
photothermal
effect,
along
with
excellent
self-healing
reprogramming
properties,
under
ultraviolet
(UV)
light
irradiation.
UV
induced
used
to
develop
complex-shaped
actuators
bilayer
film,
xPLCEazo
films,
which
bonded
by
without
glue.
individual
arm
complex
eight-arm
flower
remotely
actuated
irradiation,
circular
band
rolled
blue
laser
demonstrating
local
remote-controlled
fuel-free
motion
motile
soft
robot
respectively.
Thus,
can
be
expanded
other
interesting
applications
requiring
reprogrammable,
self-healing,
reprocessable,
patternable,
light-triggered
elastic,
rubber-like
actuators.
Polymers,
Journal Year:
2021,
Volume and Issue:
13(11), P. 1889 - 1889
Published: June 6, 2021
Liquid
crystalline
elastomers
(LCEs)
are
lightly
crosslinked
polymers
that
combine
liquid
order
and
rubber
elasticity.
Owing
to
their
unique
anisotropic
behavior
reversible
shape
responses
external
stimulation
(temperature,
light,
etc.),
LCEs
have
emerged
as
preferred
candidates
for
actuators,
artificial
muscles,
sensors,
smart
robots,
or
other
intelligent
devices.
Herein,
we
discuss
the
basic
action,
control
mechanisms,
phase
transitions,
structure–property
correlation
of
LCEs;
this
review
provides
a
comprehensive
overview
applications
in
actuators
Furthermore,
synthesis
processing
crystal
elastomer
briefly
discussed,
current
challenges
future
opportunities
prospected.
With
all
recent
progress
pertaining
material
design,
sophisticated
manipulation,
advanced
presented,
vision
application
next
generation
robots
automatic
action
systems
is
outlined.
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
61(11)
Published: Jan. 13, 2022
Abstract
Diarylethene‐functionalized
liquid‐crystalline
elastomers
(DAE‐LCEs)
containing
thiol‐anhydride
bonds
were
prepared
and
shown
to
undergo
reversible,
reprogrammable
photoinduced
actuation.
Upon
exposure
UV
light,
a
monodomain
DAE‐LCE
generated
5.5
%
strain.
This
photogenerated
strain
was
demonstrated
be
optically
reversible
over
five
cycles
of
alternating
UV/Visible
light
with
minimal
photochrome
fatigue.
The
incorporation
dynamic
allowed
for
retention
actuated
states.
Further,
re‐programming
the
nematic
director
achieved
by
heating
above
temperature
bond
exchange
occur
(70
°C)
yet
below
nematic‐to‐isotropic
transition
(100
such
that
order
maintained
between
mesogens.
observed
thermal
stability
each
diarylethene
isomers
72
h
decoupling
photo‐induced
processes
polymer
network
effects,
showing
both
relaxation
back‐isomerization
contributed
LCE
period
12
hours
after
actuation
unless
occurred.
