Intrinsically
stretchable
electronics
represent
an
attractive
platform
for
next-generation
implantable
devices
by
reducing
the
mechanical
mismatch
and
immune
responses
with
biological
tissues.
Despite
extensive
efforts,
soft
electronic
often
exhibit
obvious
trade-off
between
performances
deformability
because
of
limitations
commonly
used
compliant
materials.
Here,
we
introduce
a
scalable
approach
to
create
intrinsically
featuring
deployment
liquid
metal
components
ultrahigh
stretchability
up
400%
tensile
strain
excellent
durability
against
repetitive
deformations.
The
device
architecture
further
shows
long-term
stability
under
physiological
conditions,
conformal
attachments
internal
organs,
low
interfacial
impedance.
Successful
electrophysiological
mapping
on
rapidly
beating
hearts
demonstrates
potential
widespread
applications
in
health
monitoring,
disease
diagnosis,
medical
therapies.
Chemical Society Reviews,
Год журнала:
2018,
Номер
48(6), С. 1642 - 1667
Опубликована: Ноя. 26, 2018
Hydrogels
have
emerged
as
a
promising
bioelectronic
interfacing
material.
This
review
discusses
the
fundamentals
and
recent
advances
in
hydrogel
bioelectronics.
Nature Communications,
Год журнала:
2019,
Номер
10(1)
Опубликована: Март 5, 2019
Abstract
Hydrogels
of
conducting
polymers,
particularly
poly(3,4-ethylenedioxythiophene):poly(styrene
sulfonate)
(PEDOT:PSS),
provide
a
promising
electrical
interface
with
biological
tissues
for
sensing
and
stimulation,
owing
to
their
favorable
mechanical
properties.
While
existing
methods
mostly
blend
PEDOT:PSS
other
compositions
such
as
non-conductive
the
blending
can
compromise
resultant
hydrogels’
and/or
Here,
we
show
that
designing
interconnected
networks
nanofibrils
via
simple
method
yield
high-performance
pure
hydrogels.
The
involves
mixing
volatile
additive
dimethyl
sulfoxide
(DMSO)
into
aqueous
solutions
followed
by
controlled
dry-annealing
rehydration.
hydrogels
exhibit
set
properties
highly
desirable
bioelectronic
applications,
including
high
conductivity
(~20
S
cm
−1
in
PBS,
~40
deionized
water),
stretchability
(>
35%
strain),
low
Young’s
modulus
(~2
MPa),
superior
mechanical,
electrochemical
stability,
tunable
isotropic/anisotropic
swelling
wet
physiological
environments.
Advanced Materials,
Год журнала:
2018,
Номер
31(7)
Опубликована: Дек. 20, 2018
Slippery
and
hydrophilic
surfaces
find
critical
applications
in
areas
as
diverse
biomedical
devices,
microfluidics,
antifouling,
underwater
robots.
Existing
methods
to
achieve
such
rely
mostly
on
grafting
polymer
brushes
or
coating
hydrogel
layers,
but
these
suffer
from
several
limitations.
Grafted
are
prone
damage
do
not
provide
sufficient
mechanical
compliance
due
their
nanometer-scale
thickness.
Hydrogel
coatings
applicable
only
for
relatively
simple
geometries,
precluding
use
the
with
complex
geometries
features.
Here,
a
new
method
is
proposed
interpenetrate
polymers
into
surface
of
arbitrary
shapes
form
naturally
integrated
"hydrogel
skins."
The
skins
exhibit
tissue-like
softness
(Young's
modulus
≈
30
kPa),
have
uniform
tunable
thickness
range
5-25
µm,
can
withstand
prolonged
shearing
forces
no
measurable
damage.
also
superior
low-friction,
ionically
conductive
substrates
without
compromising
original
properties
geometry.
Applications
inner
outer
various
practical
devices
including
medical
tubing,
Foley
catheters,
cardiac
pacemaker
leads,
soft
robots
massive
scales
further
demonstrated.
Advanced Materials,
Год журнала:
2021,
Номер
34(16)
Опубликована: Дек. 12, 2021
Abstract
Medical
robots
are
invaluable
players
in
non‐pharmaceutical
treatment
of
disabilities.
Particularly,
using
prosthetic
and
rehabilitation
devices
with
human–machine
interfaces
can
greatly
improve
the
quality
life
for
impaired
patients.
In
recent
years,
flexible
electronic
soft
robotics
have
attracted
tremendous
attention
this
field
due
to
their
high
biocompatibility,
functionality,
conformability,
low‐cost.
Flexible
on
will
make
a
promising
alternative
conventional
rigid
devices,
which
potentially
revolutionize
paradigm
future
direction
medical
terms
feedback
user
experience.
review,
fundamental
components
materials,
structures,
mechanisms
human‐machine
summarized
by
renowned
applications
five
primary
areas:
physical
chemical
sensing,
physiological
recording,
information
processing
communication,
robotic
actuation,
stimulation.
This
review
further
concludes
discussing
outlook
current
challenges
these
technologies
as
interface
robotics.
