One
of
the
fundamental
principles
electrostatics
is
that
an
uncharged
object
will
be
attracted
to
a
charged
through
electrostatic
induction
as
two
approaches
one
another.
We
refer
single
electrode
and
examine
scenario
where
positive
voltage
applied.
Because
phenomenon,
single-electrode
only
generates
attraction
forces.
Here,
we
discover
can
generate
repulsion
forces
define
this
new
phenomenon
phenomenon.
investigate
phenomena,
giving
curve
force
versus
then
defining
3
regions.
Remote
actuation
manipulation
are
essential
technologies
enormous
concern,
with
tweezers
playing
important
role.
Various
designed
on
basis
external
fields
optics,
acoustics,
magnetism
used
for
remote
manipulation,
but
some
inherent
drawbacks
still
exist.
Tweezers
would
benefit
greatly
from
our
discovery
in
electrostatics.
On
discovery,
propose
concept
tweezers,
which
achieve
noncontact
manipulation.
Experimental
characterizations
successful
applications
metamaterials,
robots,
manipulating
objects
demonstrated
produce
large
deformation
rates
(>6,000%),
fast
(>100
Hz),
distance
(~15
cm)
have
advantages
simple
device
structure,
easy
control,
lightweight,
no
dielectric
breakdown,
low
cost.
Our
work
may
deepen
people’s
understanding
opens
opportunities
Advanced Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 29, 2024
Untethered
magnetic
soft
robots
capable
of
performing
adaptive
locomotion
and
shape
reconfiguration
open
up
possibilities
for
various
applications
owing
to
their
flexibility.
However,
are
typically
composed
materials
with
fixed
modulus,
making
them
unable
exert
or
withstand
substantial
forces,
which
limits
the
exploration
new
functionalities.
Here,
water-induced,
shape-locking
magnetically
controlled
change
water-induced
introduced.
The
phase
separation
enables
these
undergo
a
modulus
transition
from
1.78
MPa
in
dry
state
410
after
hydration.
Moreover,
body
material's
inherent
self-healing
property
direct
assembly
morphing
structures
complicated
magnetization
profiles.
These
can
be
delivered
through
actuation
perform
programmed
tasks
including
supporting,
blocking,
grasping
by
on-demand
deformation
subsequent
stiffening.
water-stiffening
stent
is
developed,
its
precise
delivery
demonstrated
vascular
phantom.
combination
untethered
delivery,
change,
stiffening
properties
makes
proposed
promising
biomedical
applications.
Science Advances,
Journal Year:
2024,
Volume and Issue:
10(51)
Published: Dec. 18, 2024
Multimodal
microrobots
are
of
growing
interest
due
to
their
capabilities
navigate
diverse
terrains,
with
promising
applications
in
inspection,
exploration,
and
biomedicine.
Despite
remarkable
progress,
it
remains
challenging
combine
the
attributes
excellent
maneuverability,
low
power
consumption,
high
robustness
a
single
multimodal
microrobot.
We
propose
an
architected
design
passively
morphing
wheel
that
can
be
stabilized
at
distinct
geometric
configurations,
relying
on
asymmetric
bending
stiffness
bioinspired
tentacle
structures.
By
integrating
such
wheels
electromagnetic
motors
flexible
body,
we
develop
highly
compact,
lightweight,
microrobot
(length
~32
mm
mass
~4.74
g)
three
locomotion
gaits.
It
has
motion
speed
(~21.2
BL/s),
agility
(relative
centripetal
acceleration,
~206.9
BL/s
2
),
consumption
(cost
transport,
~89),
robustness,
strong
terrain
adaptabilities.
Integration
batteries
wireless
control
module
enables
developments
untethered
maintains
agility,
traveling
hybrid
terrains.
One
of
the
fundamental
principles
electrostatics
is
that
an
uncharged
object
will
be
attracted
to
a
charged
through
electrostatic
induction
as
two
approaches
one
another.
We
refer
single
electrode
and
examine
scenario
where
positive
voltage
applied.
Because
phenomenon,
single-electrode
only
generates
attraction
forces.
Here,
we
discover
can
generate
repulsion
forces
define
this
new
phenomenon
phenomenon.
investigate
phenomena,
giving
curve
force
versus
then
defining
3
regions.
Remote
actuation
manipulation
are
essential
technologies
enormous
concern,
with
tweezers
playing
important
role.
Various
designed
on
basis
external
fields
optics,
acoustics,
magnetism
used
for
remote
manipulation,
but
some
inherent
drawbacks
still
exist.
Tweezers
would
benefit
greatly
from
our
discovery
in
electrostatics.
On
discovery,
propose
concept
tweezers,
which
achieve
noncontact
manipulation.
Experimental
characterizations
successful
applications
metamaterials,
robots,
manipulating
objects
demonstrated
produce
large
deformation
rates
(>6,000%),
fast
(>100
Hz),
distance
(~15
cm)
have
advantages
simple
device
structure,
easy
control,
lightweight,
no
dielectric
breakdown,
low
cost.
Our
work
may
deepen
people’s
understanding
opens
opportunities
