Bio-Medical Materials and Engineering,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 11, 2024
Background
In
sports,
especially
high-intensity
and
high-risk
activities,
the
meniscus
is
easily
damaged.
For
patients
with
injuries,
it
necessary
to
repair
or
replace
patient's
meniscus.
However,
as
age
increases,
human
tissue
gradually
forms
cannot
be
repaired
through
its
own
Therefore,
maintain
movement
function
support
materials.
Objective
Traditional
materials
have
poor
mechanical
properties
biocompatibility.
response
this
issue,
study
designed
a
scaffold
made
of
silk
short
fibers,
fibroin,
wool
protein.
Methods
Through
electrospinning
freeze-drying
techniques,
material
was
processed
obtain
fiber
biomimetic
structure.
Results
experiments,
surface
morphology,
hydrophobicity,
porosity,
secondary
structure,
thermal
stability,
water
absorption
swelling,
MP
MCS
SSF
were
characterized.
Conclusion
The
experimental
results
show
that
manufactured
has
good
compressive
performance,
swelling
properties,
also
exhibits
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 24, 2024
Abstract
The
intricate
muscle
arrangement
structure
endows
the
biological
tissues
with
unique
mechanical
properties.
Inspired
by
that,
a
mechanically
robust
and
multifunctional
anisotropic
Polyacrylamide/Sodium
alginate/Zirconium
ion/Carbon
dots
(PAM/SA/Zr
4+
/CDs,
PSZC)
hydrogel
is
developed
through
synergistic
effect
of
mechanical‐assisted
stretching,
Zr
metal‐coordination
CDs
embedding.
resulting
exhibited
an
impressive
tensile
strength
2.56
MPa
exceptional
toughness
10.10
MJ
m
−3
along
stretching
direction,
attributing
to
oriented
alignment
PAM
SA
molecular
chains
induced
metal‐coordination.
dense
network
endowed
PSZC
excellent
anti‐swelling
performance,
achieving
swelling
ratio
only
1.7%
after
being
stored
in
water
for
30
days.
presence
conferred
remarkable
electrical
conductivity
2.15
S
−1
hydrogel.
Furthermore,
integration
carbon
imparted
fluorescence
properties,
rendering
it
visual
sensing
capabilities.
Overall,
straightforward
strategy
proposed
fabricating
suitable
underwater
sensing,
offering
valuable
insights
development
high‐performance
sensors.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2024,
Номер
12(11), С. 4464 - 4475
Опубликована: Март 7, 2024
Although
designing
wearable
sensors
by
using
sustainable
hydrogels
has
been
gaining
widespread
attention,
the
fabrication
of
inexpensive
biobased
hydrogel
with
fast
self-healing
and
antibacterial
abilities
remains
challenging.
In
this
study,
green
were
prepared
from
aloe
vera
polysaccharides
(AP),
poly(vinyl
alcohol),
sodium
alginate
(SA).
Their
mechanical,
electrical,
biodegradable,
characteristics
investigated.
The
an
AP/SA
ratio
9:2
demonstrated
excellent
tensile
properties
elongation
at
break,
toughness,
electrical
conductivity
1477.3%,
1.19
MJ/m3,
12.67
×
10–2
S/m,
respectively.
remained
electrically
conductive
−20
°C.
During
strain
sensing,
it
exhibited
stability
sensitivity
(gauge
factor:
9.2),
a
wide
range
(up
to
1400%),
high
efficiency
96.1%
over
4
min.
It
was
also
able
detect
low
strains
(1%).
These
enabled
assembly
into
monitor
physiological
signals
generated
large
movements
body
joints,
small
facial
expression
changes,
talking,
drinking.
An
assembled
humidity
sensor
detected
relative
levels
45–98%
monitored
human
respiration
patterns
in
different
exercise
states.
Consequently,
is
potential
functional
material
for
sustainable,
flexible,
electronics.
Advanced Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 10, 2025
Abstract
Skin‐like
bioelectronics
offer
a
transformative
technological
frontier,
catering
to
continuous
and
real‐time
yet
highly
imperceptible
socially
discreet
digital
healthcare.
The
key
breakthrough
enabling
these
innovations
stems
from
advancements
in
novel
material
synthesis,
with
unparalleled
possibilities
such
as
conformability,
miniature
footprint,
elasticity.
However,
existing
solutions
still
lack
desirable
properties
like
self‐adhesivity,
breathability,
biodegradability,
transparency,
fail
streamlined
scalable
fabrication
process.
By
addressing
challenges,
inkjet‐patterned
protein‐based
skin‐like
silk
(Silk‐BioE)
are
presented,
that
integrate
all
the
features
have
been
individually
present
devices
but
never
combined
into
single
embodiment.
all‐in‐one
solution
possesses
excellent
self‐adhesiveness
(300
N
m
−1
)
without
synthetic
adhesives,
high
breathability
(1263
g
h
−2
well
swift
biodegradability
soil
within
mere
2
days.
In
addition,
an
elastic
modulus
of
≈5
kPa
stretchability
surpassing
600%,
soft
electronics
seamlessly
replicate
mechanics
epidermis
form
conformal
skin/electrode
interface
even
on
hairy
regions
body
under
severe
perspiration.
Therefore,
coupled
flexible
readout
circuitry,
Silk‐BioE
can
non‐invasively
monitor
biosignals
(i.e.,
ECG,
EEG,
EOG)
for
up
12
benchmarking
results
against
Ag/AgCl
electrodes.
Abstract
Hydrogel‐based
sensors
are
recognized
as
key
players
in
revolutionizing
robotic
applications,
healthcare
monitoring,
and
the
development
of
artificial
skins.
However,
primary
challenge
hindering
commercial
adoption
hydrogel‐based
is
their
lack
high
stability,
which
arises
from
water
content
within
hydrogel
structure,
leading
to
freezing
at
subzero
temperatures
drying
issues
if
protective
layer
compromised.
These
factors
result
a
significant
decline
benefits
offered
by
aqueous
gel
electrolytes,
particularly
terms
mechanical
properties
conductivity,
crucial
for
flexible
wearable
electronics.
Previous
reports
have
highlighted
several
disadvantages
associated
with
using
cryoprotectant
co‐solvents
lower
ion‐doped
anti‐freezing
sensors.
In
this
study,
design
optimization
photocrosslinkable
ionic
utilizing
silk
methacrylate
novel
natural
crosslinker
presented.
This
innovative
demonstrates
significantly
enhanced
properties,
including
stretchability
(>1825%),
tensile
strength
(2.49
MPa),
toughness
(9.85
MJ
m
–
3
),
resilience
(4%
hysteresis),
compared
its
non‐ion‐doped
counterpart.
Additionally,
exhibits
exceptional
nonfreezing
behavior
down
−85°C,
anti‐drying
functional
stability
up
2.5
years,
signal
drift
only
5.35%
over
2450
cycles,
whereas
control
variant,
resembling
commonly
reported
hydrogels,
149.8%.
The
successful
application
developed
advanced
robotics,
combined
pioneering
demonstration
combinatorial
commanding
single
sensor,
could
potentially
revolutionize
sensor
design,
elevating
it
next
level
benefiting
various
fields.
image
