Chemical Reviews,
Journal Year:
2024,
Volume and Issue:
124(10), P. 6148 - 6197
Published: May 1, 2024
Bioelectronics
encompassing
electronic
components
and
circuits
for
accessing
human
information
play
a
vital
role
in
real-time
continuous
monitoring
of
biophysiological
signals
electrophysiology,
mechanical
physiology,
electrochemical
physiology.
However,
noise,
particularly
motion
artifacts,
poses
significant
challenge
accurately
detecting
analyzing
target
signals.
While
software-based
"postprocessing"
methods
signal
filtering
techniques
have
been
widely
employed,
challenges
such
as
distortion,
major
requirement
accurate
models
classification,
power
consumption,
data
delay
inevitably
persist.
This
review
presents
an
overview
noise
reduction
strategies
bioelectronics,
focusing
on
reducing
artifacts
improving
the
signal-to-noise
ratio
through
hardware-based
approaches
"preprocessing".
One
main
stress-avoiding
is
elastic
energies
applied
to
bioelectronics
prevent
stress-induced
artifacts.
Various
including
strain-compliance,
strain-resistance,
stress-damping
using
unique
materials
structures
explored.
Future
research
should
optimize
structure
designs,
establish
stable
processes
measurement
methods,
develop
selectively
separating
processing
overlapping
noises.
Ultimately,
these
advancements
will
contribute
development
more
reliable
effective
healthcare
diagnostics.
The Innovation,
Journal Year:
2023,
Volume and Issue:
4(5), P. 100485 - 100485
Published: July 25, 2023
•Flexible
electronics
can
revolutionize
cardiovascular
healthcare
monitoring.•Flexible
aid
in
promptly
identifying
disease
indicators,
enabling
better
personalized
treatment.•Further
developments
include
wireless
design,
miniaturization,
multifunction,
artificial
intelligence-assisted
diagnosis,
virtual
medicine,
customized
healthcare,
etc.
Cardiovascular
diseases
(CVDs)
are
one
of
the
most
urgent
threats
to
humans
worldwide,
which
responsible
for
almost
one-third
global
mortality.
Over
last
decade,
research
on
flexible
monitoring
and
treatment
CVDs
has
attracted
tremendous
attention.
In
contrast
conventional
medical
instruments
hospitals
that
usually
bulky,
hard
move,
monofunctional,
time-consuming,
capable
continuous,
noninvasive,
real-time,
portable
monitoring.
Notable
progress
been
made
this
emerging
field,
thus
a
number
significant
achievements
concomitant
prospects
deserve
attention
practical
implementation.
Here,
we
comprehensively
review
latest
CVDs,
focusing
new
functions
provided
by
electronics.
First,
characteristics
foundation
their
combination
briefly
reviewed.
Then,
four
representative
applications
elaborated:
blood
pressure
(BP)
monitoring,
electrocardiogram
(ECG)
echocardiogram
direct
epicardium
Their
operational
principles,
progress,
merits
demerits,
future
efforts
discussed.
Finally,
remaining
challenges
opportunities
outlined.
Nano-Micro Letters,
Journal Year:
2024,
Volume and Issue:
16(1)
Published: May 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 Materials,
Journal Year:
2024,
Volume and Issue:
36(23)
Published: Feb. 29, 2024
Abstract
Hydrogels
are
considered
as
promising
materials
for
human‐machine
interfaces
(HMIs)
owing
to
their
merits
of
tailorable
mechanical
and
electrical
properties;
nevertheless,
it
remains
challenging
simultaneously
achieve
ultrasoftness,
good
robustness
high
sensitivity,
which
the
pre‐requisite
requirements
wearable
sensing
applications.
Herein,
first
time,
this
work
proposes
a
universal
phase‐transition‐induced
bubbling
strategy
fabricate
ultrasoft
gradient
foam‐shaped
hydrogels
(FSHs)
with
stop
holes
deformability,
crack‐resistance
sensitive
conformal
HMIs.
As
typical
system,
FSH
based
on
polyacrylamide/sodium
alginate
system
shows
an
ultralow
Young's
modulus
(1.68
kPa),
increased
sustainable
strain
(1411%),
enhanced
fracture
toughness
(915.6
J
m
−2
),
improved
tensile
sensitivity
(21.77),
compressive
(65.23
kPa
−1
).
The
FSHs
used
precisely
acquiring
identifying
gesture
commands
operator
remotely
control
surgical
robot
endoscopy
electric
ship
in
first‐person
perspective
cruising,
feeding
crabs
monitoring
environmental
change
real‐time.
ACS Nano,
Journal Year:
2024,
Volume and Issue:
18(22), P. 14672 - 14684
Published: May 17, 2024
Flexible
sensing
systems
(FSSs)
designed
to
measure
plantar
pressure
can
deliver
instantaneous
feedback
on
human
movement
and
posture.
This
is
crucial
not
only
for
preventing
controlling
diseases
associated
with
abnormal
pressures
but
also
optimizing
athletes'
postures
minimize
injuries.
The
development
of
an
optimal
sensor
hinges
key
metrics
such
as
a
wide
range,
high
sensitivity,
long-term
stability.
However,
the
effectiveness
current
flexible
sensors
impeded
by
numerous
challenges,
including
limitations
in
structural
deformability,
mechanical
incompatibility
between
multifunctional
layers,
instability
under
complex
stress
conditions.
Addressing
these
limitations,
we
have
engineered
integrated
system
sensitivity
reliability
gait
analysis.
It
features
high-modulus,
porous
laminated
ionic
fiber
structure
robust
self-bonded
interfaces,
utilizing
unified
polyimide
material
system.
showcases
(156.6
kPa–1),
extensive
range
(up
4000
kPa),
augmented
interfacial
toughness
durability
(over
150,000
cycles).
Additionally,
our
FSS
capable
real-time
monitoring
distribution
across
various
sports
activities.
Leveraging
deep
learning,
achieves
high-precision,
intelligent
recognition
different
types
99.8%
accuracy
rate.
approach
provides
strategic
advancement
field
sensors,
ensuring
prolonged
stability
even
amidst
dynamics
providing
feasible
solution
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 14, 2024
Abstract
Hydrogel‐based
wearable
strain
sensors
have
recently
gained
considerable
interest
due
to
their
promising
applications
in
real‐time
health
monitoring
and
motion
detection.
However,
achieving
integrated
high‐stretchability,
self‐adhesiveness,
long‐term
water‐retaining
property
simultaneously
hydrogel
systems
remains
a
big
challenge,
which
limits
electronics.
Herein,
multifunctional
material
designed
is
proposed
for
that
can
be
manufactured
by
digital
light
processing
(DLP)
3D
printing
technology.
By
tailoring
the
composition
of
chemically
cross‐linked
networks
(ploy(acrylamide)/poly(acrylic
acid)/poly(ethylene
glycol)
diacrylate),
physically
diacrylate/silk
fibroin/glycerol/water)
microstructures
on
surface,
printed
exhibits
superior
adjustable
mechanical
properties,
tunable
adhesion
good
simultaneously.
In
addition,
through
adding
conductive
ions,
high
ionic
conductivity
also
achieved
stretchable
sensing
applications.
Based
these
multifunctionalities,
suitable
detect
various
body
motions.
This
work
provides
prospect
printable
with
broad
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(29)
Published: April 29, 2024
Abstract
The
rapid
growth
of
flexible
quasi‐solid‐state
thermocells
(TECs)
provides
a
fresh
way
forward
for
wearable
electronics.
However,
their
insufficient
mechanical
strength
and
power
output
still
hinder
further
applications.
This
work
demonstrates
one‐stone‐two‐birds
strategy
to
synergistically
enhance
the
thermoelectrochemical
properties
[Fe(CN)
6
]
3−/4−
‐based
TECs.
By
introducing
Hofmeister
effect
multiple
non‐covalent
interactions
via
betaine
zwitterions,
conventional
brittle
gelatin
hydrogel
electrolytes
is
substantially
improved
from
50
440
kPa,
with
high
stretchability
approaching
250
%.
Meanwhile,
zwitterions
strongly
affect
solvation
structure
3−
ions,
thus
enlarging
entropy
difference
raising
Seebeck
coefficient
1.47
2.2
mV
K
−1
.
resultant
TECs
exhibit
normalized
density
0.48
mW
m
−2
,
showing
notable
improvement
in
overall
performance
compared
counterparts
without
zwitterion
regulation.
intrinsic
thermo‐reversible
property
also
allows
repeatedly
self‐recover
through
sol‐gel
transformations,
ensuring
reliable
energy
even
recycling
case
extreme
damages.
An
energy‐autonomous
smart
glove
consisting
eighteen
individual
designed,
which
can
simultaneously
monitor
temperature
different
positions
on
any
touched
object,
demonstrating
potential
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(25)
Published: April 4, 2024
Hydrogel-based
electronics
have
inherent
similarities
to
biological
tissues
and
hold
potential
for
wearable
applications.
However,
low
conductivity,
poor
stretchability,
nonpersonalizability,
uncontrollable
dehydration
during
use
limit
their
further
development.
In
this
study,
projection
stereolithography
3D
printing
high-conductive
hydrogel
flexible
passive
wireless
sensing
is
reported.
The
prepared
photocurable
silver-based
rapidly
planarized
into
antenna
shapes
on
substrates
using
surface
stereolithography.
After
partial
dehydration,
silver
flakes
within
the
circuits
form
sufficient
conductive
pathways
achieve
high
conductivity
(387
S
cm
