npj Flexible Electronics,
Journal Year:
2022,
Volume and Issue:
6(1)
Published: Aug. 5, 2022
Abstract
Flexible
electronics
are
playing
an
increasingly
important
role
in
human
health
monitoring
and
healthcare
diagnosis.
Strong
adhesion
on
tissue
would
be
ideal
for
reducing
interface
resistance
motion
artifacts,
but
arising
problems
such
as
skin
irritation,
rubefaction,
pain
upon
device
removal
have
hampered
their
utility.
Here,
inspired
by
the
temperature
reversibility
of
hydrogen
bonding,
a
skin-friendly
conductive
hydrogel
with
multiple-hydrogen
bonds
was
designed
using
biocompatible
poly(vinyl
alcohol)
(PVA),
phytic
acid
(PA),
gelatin
(Gel).
The
obtained
PVA/PA/Gel
(PPG)
temperature-triggered
tunable
mechanic
could
reliably
adhere
to
detect
electrophysiological
signals
under
hot
compress
while
readily
removed
cool
compress.
Furthermore,
additional
advantages
transparency,
breathability,
antimicrobial
activity
PPG
ensure
its
long-time
wearable
value
skin.
It
is
both
environmentally
friendly
cost
saving
waste
during
production
can
recycled
based
reversible
physical
bonding.
sensor
expected
good
application
prospects
record
monitoring.
Advanced Materials,
Journal Year:
2021,
Volume and Issue:
33(44)
Published: Sept. 17, 2021
Abstract
Underwater
adhesives
are
in
high
demand
both
commercial
and
industrial
sectors.
Compared
with
used
dry
(air)
environments,
for
wet
or
submerged
surfaces
aqueous
environments
have
specific
challenges
development
performance.
In
this
review,
focus
is
on
demonstrating
macroscopic
adhesion
to
wet/underwater
substrates.
The
current
strategies
first
introduced
different
types
of
underwater
adhesives,
then
an
overview
provided
the
performance
based
mechanisms
strategies.
Finally,
possible
research
directions
prospects
discussed.
Advanced Materials,
Journal Year:
2022,
Volume and Issue:
34(41)
Published: June 10, 2022
Abstract
Information
security
protection
has
a
tremendous
impact
on
human
life,
social
stability
and
national
security,
leading
to
the
rapid
development
of
anti‐counterfeiting
materials
related
techniques.
However,
traditional
stored
information
hard
or
dry
media
is
often
static
lacks
functions,
which
makes
it
challenging
deal
with
increasing
powerful
counterfeiting
technologies.
Modified
intelligent
polymeric
gels
exhibit
color
changes
shape
morphing
under
external
stimuli,
give
them
great
potential
for
applications
in
storage.
This
paper
provides
an
overview
latest
progress
gel‐based
storage
relation
counterfeiting.
Following
brief
introduction
materials,
preparation
methods
adjustable
colors
(e.g.,
chemical
physical
colors)
various
encryption/decryption
modes
involving
dimensions
diverse
are
outlined.
Finally,
challenges
prospects
based
smart
discussed.
Advanced Functional Materials,
Journal Year:
2021,
Volume and Issue:
31(49)
Published: Sept. 5, 2021
Abstract
Hydrogel
modified
porous
matrix
with
the
super‐wetting
surface
(i.e.,
super‐hydrophilic/underwater
super‐oleophobic)
is
ideal
for
oil/water
separation.
However,
deterioration
in
mechanical
strength
and
separation
efficiency
during
swelling
process
complicated
synthesis
procedure
limits
its
industrial
application.
In
this
study,
a
strategy
of
using
ethanol
to
dynamically
regulate
hydrogen
bond
crosslinking
between
polyvinyl
alcohol
(PVA)
tannic
acid
(TA)
proposed
prepare
“hydrogel
paint”,
which
can
be
simply
applied
on
substrate
by
different
one‐step
operations
(dipping,
brushing,
spraying,
etc.)
without
additional
cross‐linking.
The
underline
mechanism
attributed
re‐establishment
intermolecular
mediated
cross‐linking
PVA
TA
evaporation.
Consequently,
resultant
hydrogel
coating
exhibits
ultra‐high
(>10
MPa),
volume
stability,
excellent
oil‐water
(>99%).
This
study
will
provide
new
insights
into
scalable
fabrication
hydrogel‐coated
materials
scenarios.
Materials Horizons,
Journal Year:
2021,
Volume and Issue:
8(10), P. 2761 - 2770
Published: Jan. 1, 2021
Underwater
sensing
has
extraordinary
significance
in
ocean
exploration
(e.g.,
marine
resources
development,
biology
research,
and
environment
reconnaissance),
but
the
great
difference
between
land
seriously
prevents
current
traditional
sensors
from
being
applied
underwater
sensing.
Herein,
we
reported
a
fully
hydrophobic
ionogel
with
long-term
adhesion
stability
as
highly
efficient
wearable
sensor
that
displays
an
excellent
performance,
including
high
sensitivity,
rapid
responsiveness
superior
durability.
Of
greater
significance,
showed
tremendous
potential
applications
for
communication,
posture
monitoring
biological
research.
Advanced Energy Materials,
Journal Year:
2021,
Volume and Issue:
11(34)
Published: July 15, 2021
Abstract
Zinc‐based
batteries
are
potential
candidates
for
flexible
energy
storage
due
to
their
high
capacity,
low
cost,
and
intrinsic
safety.
Hydrogel
electrolytes
with
saturated
aqueous
solvents
can
provide
remarkable
electrochemical
performance
while
retaining
satisfactory
flexibility
zinc‐based
batteries.
The
past
decades
have
witnessed
fast
growth.
However,
the
study
of
hydrogel
under
extreme
conditions
is
still
in
early
stages
many
technical
issues
remain
be
addressed.
In
this
review,
physical
chemical
properties
discussed
application
Strategies
towards
extremely
high/low
temperatures
or
deformation
behaviors
reviewed
analyzed.
Moreover,
design
strategies
all‐around
electrolyte
that
appropriate
use
all
these
proposed.
A
perspective
discussing
challenges
future
directions
also
provided.
Materials Today Bio,
Journal Year:
2023,
Volume and Issue:
19, P. 100582 - 100582
Published: Feb. 16, 2023
Hydrogels
are
essential
biomaterials
due
to
their
favorable
biocompatibility,
mechanical
properties
similar
human
soft
tissue
extracellular
matrix,
and
repair
properties.
In
skin
wound
repair,
hydrogels
with
antibacterial
functions
especially
suitable
for
dressing
applications,
so
novel
hydrogel
dressings
have
attracted
widespread
attention,
including
the
design
of
components,
optimization
preparation
methods,
strategies
reduce
bacterial
resistance,
etc.
this
review,
we
discuss
fabrication
challenges
associated
crosslinking
methods
chemistry
materials.
We
investigated
advantages
limitations
(antibacterial
effects
mechanisms)
different
components
in
achieve
good
properties,
response
stimuli
such
as
light,
sound,
electricity
resistance.
Conclusively,
provide
a
systematic
summary
findings
(crosslinking
methods)
an
outlook
on
long-lasting
effects,
broader
spectrum,
diversified
forms,
future
development
prospects
field.
Advanced Science,
Journal Year:
2023,
Volume and Issue:
10(28)
Published: Aug. 6, 2023
Hydrogels
with
tailor-made
swelling-shrinkable
properties
have
aroused
considerable
interest
in
numerous
biomedical
domains.
For
example,
as
swelling
is
a
key
issue
for
blood
and
wound
extrudates
absorption,
the
transference
of
nutrients
metabolites,
well
drug
diffusion
release,
hydrogels
high
capacity
been
widely
applicated
full-thickness
skin
healing
tissue
regeneration,
delivery.
Nevertheless,
fields
adhesives
internal
soft-tissue
healing,
bioelectronics,
non-swelling
play
very
important
functions
owing
to
their
stable
macroscopic
dimension
physical
performance
physiological
environment.
Moreover,
negative
behavior
(i.e.,
shrinkage)
can
be
exploited
drive
noninvasive
closure,
achieve
resolution
enhancement
hydrogel
scaffolds.
In
addition,
it
help
push
out
entrapped
drugs,
thus
promote
release.
However,
there
still
has
not
general
review
constructions
applications
from
viewpoint
properties.
Therefore,
this
summarizes
tactics
employed
so
far
tailoring
applications.
And
relatively
comprehensive
understanding
current
progress
future
challenge
different
features
provided
potential
clinical
translations.
Journal of Materials Chemistry A,
Journal Year:
2022,
Volume and Issue:
10(22), P. 11823 - 11853
Published: Jan. 1, 2022
This
review
summarizes
the
adhesion
mechanism
and
design
strategies
of
underwater
hydrogels,
generalizes
their
application
fields
(adhesives,
motion
monitoring,
marine
environmental
exploration
coatings).
Advanced Materials,
Journal Year:
2022,
Volume and Issue:
34(50)
Published: Sept. 20, 2022
A
hydrogel
is
often
fabricated
from
preexisting
polymer
chains
by
covalently
crosslinking
them
into
a
network.
The
crosslinks
make
the
swell-resistant
but
brittle.
This
conflict
resolved
here
making
dough.
dough
formed
mixing
long
with
small
amount
of
water
and
photoinitiator.
then
homogenized
kneading
annealing
at
elevated
temperatures,
during
which
crowded
densely
entangle.
are
sparsely
crosslinked
network
under
an
ultraviolet
lamp,
submerged
in
to
swell
equilibrium.
resulting
both
tough.
also
has
near-perfect
elasticity,
high
strength,
fatigue
resistance,
low
friction.
method
demonstrated
two
widely
used
polymers,
poly(ethylene
glycol)
cellulose.
These
hydrogels
have
never
been
made
swell-resistant,
elastic,
tough
before.
generally
applicable
synthetic
natural
compatible
industrial
processing
technologies,
opening
doors
development
sustainable,
high-performance
hydrogels.
ACS Nano,
Journal Year:
2023,
Volume and Issue:
17(3), P. 1764 - 1802
Published: Jan. 30, 2023
The
advent
of
5G
and
the
Internet
Things
has
spawned
a
demand
for
wearable
electronic
devices.
However,
lack
suitable
flexible
energy
storage
system
become
"Achilles'
Heel"
Additional
problems
during
transformation
battery
structure
from
conventional
to
also
present
severe
challenge
design.
Flexible
Zn-based
batteries,
including
Zn-ion
batteries
Zn–air
have
long
been
considered
promising
candidates
due
their
high
safety,
eco-efficiency,
substantial
reserve,
low
cost.
In
past
decade,
researchers
come
up
with
elaborate
designs
each
portion
improve
ionic
conductivities,
mechanical
properties,
environment
adaptabilities,
scalable
productions.
It
would
be
helpful
summarize
reported
strategies
compare
pros
cons
facilitate
further
research
toward
commercialization
batteries.
this
review,
current
progress
in
developing
is
comprehensively
reviewed,
electrolytes,
cathodes,
anodes,
discussed
terms
synthesis,
characterization,
performance
validation.
By
clarifying
challenges
design,
we
methodology
previous
investigations
propose
future
development.
end,
paradigm
summarized
fit
burgeoning
requirement
devices
an
iterative
process,
which
will
benefit
development
