Advanced Functional Materials,
Год журнала:
2023,
Номер
34(16)
Опубликована: Дек. 29, 2023
Abstract
The
interfacial
design
of
the
electronic
skins
(E‐skins),
which
are
increasingly
crucial
in
areas
like
exercise
monitoring,
healthcare,
etc.,
has
a
great
impact
on
wearability
and
functions.
adhesion
between
E‐skin
human
skin
serves
as
foundation
for
various
functionalities.
In
addition
to
robust
strength,
detaching‐on‐demand,
waterproof
abilities
also
important
long‐time
wearing
comfort
detachment
after
use.
Here,
self‐adhesive,
detach‐on‐demand,
hydrophobic
E‐skins
(PBIA)
by
copolymerization
acrylates
with
conductive
ionic
liquid
adhesive
components
strain
sensor
triboelectric
nanogenerator
(TENG)
is
developed.
strong
van
der
Waals
self‐adhesion
(shear
≈574
kPa,
peeling
≈110
N
m
−1
),
under
immersing,
flushing,
penetrating
situations
enable
realize
stable
monitoring
body
motions
both
resistance
sensing
TENG
modes.
Meanwhile,
easy
detach‐on‐demand
ability
(574
35
kPa
110
7
)
guarantees
comfortable
PBIA
use,
avoiding
pain
or
injury
skin.
strategy
can
be
expanded
other
kinds
accelerate
pace
practical
applications
E‐skins.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
unknown
Опубликована: Апрель 27, 2024
Conductive
hydrogels
are
ideal
materials
for
intelligent
medical
devices,
human-machine
interfaces,
and
flexible
bioelectrodes
due
to
their
adjustable
mechanical
properties
electrical
responsiveness,
whereas
it
is
still
a
great
challenge
achieve
the
integration
of
excellent
flexibility
biocompatibility
into
one
hydrogel
sensor
while
also
incorporating
self-healing,
self-adhesion,
environmental
tolerance,
antimicrobial
properties.
Here,
nanocomposite
conductive
organohydrogel
was
constructed
by
using
collagen
(Col),
alginate-derived
carbon
quantum
dots
(OSA-CQDs),
poly(acrylic
acid)
(PAA),
ethylene
glycol
reduced
AgNPs,
Fe3+
ions.
Depending
on
OSA-CQDs
with
multiple
chemical
binding
sites
high
specific
surface
area
as
cross-linkers,
coupling
highly
biologically
active
Col
chains
PAA
serving
an
energy
dissipation
module,
resulting
exhibited
(795%
strain,
193
kPa
strength),
cell
compatibility
(>95%
survival
rate),
self-healing
efficiency
(HE
=
79.5%),
antifreezing
(−20
°C),
moisturizing
(>120
h),
repeatable
adhesion
(strength
>20
kPa,
times
>10),
inhibitory
activity
against
Escherichia
coli
Staphylococcus
aureus
(9
21.5
cm2),
conductivity,
strain
sensitivity
(σ
1.34
S/m,
gauge
factor
(GF)
11.63).
Based
all-in-one
multifunction,
can
collaboratively
adapt
multimode
sensing
electrophysiological
realize
wireless
real-time
monitoring
human
activities
physiological
health.
Therefore,
this
work
provides
new
common
platform
design
next-generation
hydrogel-based
smart
wearable
sensors.
Nano-Micro Letters,
Год журнала:
2024,
Номер
16(1)
Опубликована: Май 31, 2024
Abstract
The
rapid
development
of
the
Internet
Things
and
artificial
intelligence
technologies
has
increased
need
for
wearable,
portable,
self-powered
flexible
sensing
devices.
Triboelectric
nanogenerators
(TENGs)
based
on
gel
materials
(with
excellent
conductivity,
mechanical
tunability,
environmental
adaptability,
biocompatibility)
are
considered
an
advanced
approach
developing
a
new
generation
sensors.
This
review
comprehensively
summarizes
recent
advances
in
gel-based
TENGs
sensors,
covering
their
principles,
properties,
applications.
Based
requirements
working
mechanism
characteristic
advantages
gels
introduced.
Design
strategies
performance
optimization
hydrogel-,
organogel-,
aerogel-based
systematically
summarized.
In
addition,
applications
human
motion
sensing,
tactile
health
monitoring,
human–machine
interaction,
other
related
fields
Finally,
challenges
discussed,
feasible
proposed
to
guide
future
research.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(21)
Опубликована: Фев. 1, 2024
Abstract
Multi‐functional
hydrogels
have
gained
attention
for
their
potential
as
smart
materials
in
diverse
applications.
However,
most
established
design
principles
and
fabrication
methods
are
considered
convoluted
ineffective.
Here,
by
using
a
simple
one‐pot
efficient
method,
novel
PAAm/Gelatin/Ammonium
sulfate
organohydrogel
(PGAOH)
with
exceptional
multifunctionality,
including
anti‐freezing
properties,
excellent
conductivity,
remarkable
stability,
free‐shapeable,
sensitivity,
elasticity,
high
transparency,
resistance
to
drying
is
developed.
In
this
system,
it
surprisingly
discovered
that
the
presence
of
acrylamide
molecules,
gelatin
can
disperse
well
high‐concentration
salting‐out
solutions,
significantly
shorten
preparation
time
gel,
allows
precise
control
gel
volume.
More
importantly,
form
another
polyacrylamide
network,
further
enhancing
mechanical
properties
PGAOH.
Additionally,
introduction
glycerol
notably
improved
environmental
stability
PGAOH
effectively
enhanced
its
transparency.
These
innovative
combinations
result
possessing
demonstrated
successful
application
wireless
virtual
reality
(VR)
gaming
device.
Advanced Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 28, 2025
Abstract
Ionic
conductive
hydrogels
(ICHs)
are
emerging
as
key
materials
for
advanced
human‐machine
interactions
and
health
monitoring
systems
due
to
their
unique
combination
of
flexibility,
biocompatibility,
electrical
conductivity.
However,
a
major
challenge
remains
in
developing
ICHs
that
simultaneously
exhibit
high
ionic
conductivity,
self‐healing,
strong
adhesion,
particularly
under
extreme
low‐temperature
conditions.
In
this
study,
novel
ICH
composed
sulfobetaine
methacrylate,
methacrylic
acid,
TEMPO‐oxidized
cellulose
nanofibers,
sodium
alginate,
lithium
chloride
is
presented.
The
hydrogel
designed
with
hydrogen‐bonded
chemically
crosslinked
network,
achieving
excellent
conductivity
(0.49
±
0.05
S
m
−1
),
adhesion
(36.73
2.28
kPa),
self‐healing
capacity
even
at
−80
°C.
Furthermore,
the
maintain
functionality
over
45
days,
showcasing
outstanding
anti‐freezing
properties.
This
material
demonstrates
significant
potential
non‐invasive,
continuous
monitoring,
adhering
conformally
skin
without
signal
crosstalk,
enabling
real‐time,
high‐fidelity
transmission
cryogenic
These
offer
transformative
next
generation
multimodal
sensors,
broadening
application
possibilities
harsh
environments,
including
weather
outer
space.
