ACS Applied Electronic Materials,
Год журнала:
2023,
Номер
5(11), С. 6003 - 6013
Опубликована: Окт. 26, 2023
As
high-efficiency
electrical
responsive
materials,
multilayer
dielectric
elastomer
actuators
(DEAs)
have
been
widely
adopted
in
fabricating
soft
robotics.
Among
various
candidate
liquid
metal
(LM)
is
especially
suitable
to
be
used
as
a
flexible
electrode
for
DEAs
owing
its
high
conductivity
and
negligible
stiffness.
However,
limited
by
the
printing
techniques,
former
works
still
did
not
achieve
embedded
with
LM
electrodes.
To
further
push
forward
progress
this
direction,
present
work
proposes
an
easygoing
way
electrodes
combining
spray-printing
high-speed
spin
procedures
together.
Over
conceptual
experiments,
effects
of
rotational
speed
on
surface
topology,
mechanical
behaviors,
properties
investigated
optimum
value
4000
rpm
recommended
removing
excess
LM.
Following
that,
DEA
thus
integrated
presents
stiffness
change
compared
pure
displays
rather
good
resistance
cyclic
behaviors.
Finally,
cylindrical
device
six
layers
seven
silicone
film
constructed
demonstrated
generate
blocked
force
8.76
mN
at
bipolar
sinusoidal
voltage
1000
V
1
Hz,
warranting
feasibility
current
approaches.
This
expands
repertoire
fabrication
methods
holds
significant
promise
robotics
near
future.
Advanced Intelligent Systems,
Год журнала:
2024,
Номер
6(10)
Опубликована: Июль 8, 2024
Leveraging
the
unique
attributes
of
functional
soft
materials
to
generate
force
and
deformation,
significant
advancements
in
actuators
are
driving
evolution
smart
robotics.
Liquid
metals
(LMs),
known
for
their
high
deformability
tunable
morphology,
demonstrate
remarkable
actuating
capabilities
through
controllable
surface
tension.
Inspired
by
predation
method
chameleons,
this
work
introduces
a
bioinspired
LM
actuator
(BLMA)
modulating
morphology
LM.
This
BLMA
enables
high‐strain
(up
170%)
actuation
precisely
directing
droplets
toward
an
electrode.
Various
parameters
affecting
BLMA's
performance
explored.
Notably,
application
reductive
voltage
induces
rapid
solidification
supercooled
LM,
facilitating
phase
transition
at
room
temperature.
The
solidified
enhances
its
holding
over
1000
times.
To
underscore
superior
BLMA,
diverse
applications,
such
as
complex
two‐dimensional
plane
actuator,
stepper
motor
with
adjustable
step
intervals,
transition‐controlled
relay,
laser
code
lock
gate
set,
presented.
It
is
anticipated
that
exceptional
characteristics
will
propel
realms
robotics
mechatronics.
ACS Applied Polymer Materials,
Год журнала:
2024,
Номер
6(14), С. 8017 - 8026
Опубликована: Июль 15, 2024
Dielectric
elastomers
(DEs)
are
smart
materials
that
can
transform
electrical
energy
to
mechanical
energy.
Compared
with
commonly
reported
two-dimensional
membrane-structured
DE
actuators
(DEAs)
generate
biaxial
displacement,
fiber-based
DEAs
able
uniaxial
displacement
through
internal
contraction
or
relaxation
forces,
mimicking
the
working
mechanism
of
human
muscles.
In
this
work,
high-dielectric
barium
titanate
(BTO)-encapsuled
carboxylated
multiwalled
carbon
nanotubes
(MWCNTs)
(BTO@MWCNTs)
were
prepared
and
incorporated
into
a
styrene–ethylene–butylene–styrene
copolymer
(SEBS)
fabricate
flexible
hollow
DEs
coaxial
wet
spinning.
By
filling
fiber
liquid
metal
coating
surface
grease
electrode,
kind
actuator
(HFDEA)
was
acquired.
The
HFDEA
achieved
19.76%
actuated
elongation
at
an
excitation
electric
field
strength
approximately
49
V/μm
exhibited
reliable
durability
in
100
repeated
actuation
tests.
fabricated
has
great
application
potential
artificial
muscle
field.
Journal of Mechanisms and Robotics,
Год журнала:
2024,
Номер
16(10)
Опубликована: Авг. 2, 2024
Abstract
Endoluminal
devices
are
indispensable
in
medical
procedures
the
natural
lumina
of
body,
such
as
circulatory
system
and
gastrointestinal
tract.
In
current
clinical
practice,
there
is
a
need
for
increased
control
capabilities
endoluminal
with
less
discomfort
risk
to
patient.
This
paper
describes
detailed
modeling
experimental
validation
magneto-electroactive
soft
(MEESo)
robot
concept
that
combines
magnetic
electroactive
polymer
(EAP)
actuation
improve
utility
device.
The
proposed
capsule-like
device
comprises
two
permanent
magnets
alternating
polarity
connected
by
soft,
low-power
ionic
polymer-metal
composite
(IPMC)
EAP
body.
A
model
MEESo
developed
explore
quantitatively
effects
dual
on
robot’s
performance.
It
shown
gait
enhanced,
during
magnetically-driven
cycle,
IPMC
body
deformation.
further
validated
creating
physical
prototype
robot.
Experimental
results
show
performance
increases
up
68%
compared
no
actuation.
These
strongly
suggest
integrating
into
extends
efficacy
traversing
tract
environments.
ACS Applied Electronic Materials,
Год журнала:
2023,
Номер
5(11), С. 6003 - 6013
Опубликована: Окт. 26, 2023
As
high-efficiency
electrical
responsive
materials,
multilayer
dielectric
elastomer
actuators
(DEAs)
have
been
widely
adopted
in
fabricating
soft
robotics.
Among
various
candidate
liquid
metal
(LM)
is
especially
suitable
to
be
used
as
a
flexible
electrode
for
DEAs
owing
its
high
conductivity
and
negligible
stiffness.
However,
limited
by
the
printing
techniques,
former
works
still
did
not
achieve
embedded
with
LM
electrodes.
To
further
push
forward
progress
this
direction,
present
work
proposes
an
easygoing
way
electrodes
combining
spray-printing
high-speed
spin
procedures
together.
Over
conceptual
experiments,
effects
of
rotational
speed
on
surface
topology,
mechanical
behaviors,
properties
investigated
optimum
value
4000
rpm
recommended
removing
excess
LM.
Following
that,
DEA
thus
integrated
presents
stiffness
change
compared
pure
displays
rather
good
resistance
cyclic
behaviors.
Finally,
cylindrical
device
six
layers
seven
silicone
film
constructed
demonstrated
generate
blocked
force
8.76
mN
at
bipolar
sinusoidal
voltage
1000
V
1
Hz,
warranting
feasibility
current
approaches.
This
expands
repertoire
fabrication
methods
holds
significant
promise
robotics
near
future.
