ACS Applied Materials & Interfaces,
Год журнала:
2023,
Номер
15(22), С. 27195 - 27205
Опубликована: Май 25, 2023
Wireless
actuation
of
electrically
driven
soft
actuators
is
paramount
importance
for
the
development
bioinspired
robotics
without
physical
connection
or
on-board
batteries.
Here,
we
demonstrate
untethered
electrothermal
liquid
crystal
elastomer
(LCE)
based
on
emerging
wireless
power
transfer
(WPT)
technology.
We
first
design
and
fabricate
LCE-based
that
consist
an
active
LCE
layer,
a
conductive
metal-filled
polyacrylic
acid
(LM-PA)
passive
polyimide
layer.
LM
can
function
not
only
as
transducer
to
endow
resulting
with
responsiveness
but
also
embedded
sensor
track
resistance
changes.
Various
shape-morphing
locomotive
modes
such
directional
bending,
chiral
helical
deformation,
inchworm-inspired
crawling
be
facilely
obtained
through
appropriately
controlling
molecular
alignment
direction
monodomain
LCEs,
reversible
shape-deformation
behaviors
monitored
in
real-time
Interestingly,
have
been
achieved
by
designing
closed
circuit
within
combining
it
inductive-coupling
WPT
When
actuator
approaches
commercially
available
supply
system,
induced
electromotive
force
generated
circuit,
which
results
Joule
heating
actuation.
As
proof-of-concept
illustrations,
wirelessly
exhibit
programmable
are
demonstrated.
The
research
disclosed
herein
provide
insights
into
somatosensory
actuators,
battery-free
robots,
beyond.
ACS Applied Polymer Materials,
Год журнала:
2023,
Номер
5(9), С. 7477 - 7484
Опубликована: Авг. 10, 2023
Liquid
crystal
elastomer
(LCE)
is
a
typical
thermally
responsive
soft
material,
which
an
ideal
candidate
for
fabricating
programmable
shape
changing
structures.
The
anisotropic
changes
of
LCEs
caused
by
the
mesogen
reorientation
are
inherently
different
from
those
other
stimulus-responsive
materials,
such
as
hydrogels
and
dielectric
elastomers.
In
this
paper,
we
first
investigate
bending
behaviors
bilayer
with
monodomain
active
layer
polydomain
passive
layer.
It
shown
that
folding
can
be
obtained
aspect
ratio.
We
further
propose
strategy
to
achieve
complex
activated
LCE
deformations
through
introducing
precuts
into
printed
structures,
change
degrees
freedom
morphing
our
design
beyond
ability
based
on
materials.
Our
method
provide
far-reaching
possibilities
devices
3D
actuators
various
functionalities.
Advanced Materials,
Год журнала:
2023,
Номер
36(34)
Опубликована: Июль 11, 2023
4D
printing
of
liquid
crystal
elastomers
(LCEs)
via
direct
ink
writing
has
opened
up
great
opportunities
to
create
stimuli-responsive
actuations
for
applications
such
as
soft
robotics.
However,
most
4D-printed
LCEs
are
limited
thermal
actuation
and
fixed
shape
morphing,
posing
a
challenge
achieving
multiple
programmable
functionalities
reprogrammability.
Here,
4D-printable
photochromic
titanium-based
nanocrystal
(TiNC)/LCE
composite
is
developed,
which
enables
the
reprogrammable
photochromism
photoactuation
single
architecture.
The
printed
TiNC/LCE
exhibits
reversible
color-switching
between
white
black
in
response
ultraviolet
(UV)
irradiation
oxygen
exposure.
Upon
near-infrared
(NIR)
irradiation,
UV-irradiated
region
can
undergo
photothermal
actuation,
allowing
robust
grasping
weightlifting.
By
precisely
controlling
structural
design
light
object
be
globally
or
locally
programmed,
erased,
reprogrammed
achieve
desirable
photocontrollable
color
patterns
3D
structure
constructions,
barcode
origami-
kirigami-inspired
structures.
This
work
provides
novel
concept
designing
engineering
adaptive
structures
with
unique
tunable
multifunctionalities,
have
potential
biomimetic
robotics,
smart
construction
engineering,
camouflage,
multilevel
information
storage,
etc.
ACS Applied Materials & Interfaces,
Год журнала:
2023,
Номер
15(22), С. 27195 - 27205
Опубликована: Май 25, 2023
Wireless
actuation
of
electrically
driven
soft
actuators
is
paramount
importance
for
the
development
bioinspired
robotics
without
physical
connection
or
on-board
batteries.
Here,
we
demonstrate
untethered
electrothermal
liquid
crystal
elastomer
(LCE)
based
on
emerging
wireless
power
transfer
(WPT)
technology.
We
first
design
and
fabricate
LCE-based
that
consist
an
active
LCE
layer,
a
conductive
metal-filled
polyacrylic
acid
(LM-PA)
passive
polyimide
layer.
LM
can
function
not
only
as
transducer
to
endow
resulting
with
responsiveness
but
also
embedded
sensor
track
resistance
changes.
Various
shape-morphing
locomotive
modes
such
directional
bending,
chiral
helical
deformation,
inchworm-inspired
crawling
be
facilely
obtained
through
appropriately
controlling
molecular
alignment
direction
monodomain
LCEs,
reversible
shape-deformation
behaviors
monitored
in
real-time
Interestingly,
have
been
achieved
by
designing
closed
circuit
within
combining
it
inductive-coupling
WPT
When
actuator
approaches
commercially
available
supply
system,
induced
electromotive
force
generated
circuit,
which
results
Joule
heating
actuation.
As
proof-of-concept
illustrations,
wirelessly
exhibit
programmable
are
demonstrated.
The
research
disclosed
herein
provide
insights
into
somatosensory
actuators,
battery-free
robots,
beyond.
