Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(22)
Published: Feb. 8, 2024
Abstract
Despite
the
remarkable
progress
in
development
of
sweat
sensors,
self‐powered
sweat‐responsive
sensing
displays
that
detect
electric
signals
with
simultaneous
and
direct
visualization
is
rarely
demonstrated.
Here,
a
structural
color
(SC)
display
enabled
by
ionomer‐doped
block
copolymer
(BCP)
photonic
crystals
(PCs)
presented.
The
BCP
PC
developed
employing
cross‐linking
single‐mobile
ionomer
(SMI)
mobile
anions
anchored
to
immobile
polycations
1‐D
PC.
hydrophobic
SMI‐doped
mechanically
robust
as
well
water
temperature‐resistive,
exhibiting
concentration‐dependent
full
visible
SCs.
Moreover,
periodically
confined
harvest
triboelectric
energy,
giving
rise
high‐power
density
≈0.774
Mw
cm
−2
.
Cation‐sensitive
SC
variation
observed
PC,
allowing
containing
various
cations.
A
skin‐patchable
demonstrated
which
kirigami‐patterned
incorporated
can
withstand
up
50%
strain
during
exercise.
Sweat
from
exercise
visualized
via
measured
using
both
ionic
resistance
changes
signals.
In
addition,
integration
membrane
into
enables
quantification
sweat.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(24)
Published: Feb. 21, 2024
In
the
past
decade,
with
rapid
development
of
wearable
electronics,
medical
health
monitoring,
Internet
Things,
and
flexible
intelligent
robots,
pressure
sensors
have
received
unprecedented
attention.
As
a
very
important
kind
electronic
component
for
information
transmission
collection,
gained
wide
application
prospect
in
fields
aerospace,
biomedical
skin,
human-machine
interface.
recent
years,
MXene
has
attracted
extensive
attention
because
its
unique
2D
layered
structure,
high
conductivity,
rich
surface
terminal
groups,
hydrophilicity,
which
brought
new
breakthrough
sensing.
Thus,
it
become
revolutionary
pressure-sensitive
material
great
potential.
this
work,
advances
MXene-based
are
reviewed
from
aspects
sensing
type,
mechanism,
selection,
structural
design,
preparation
strategy,
application.
The
methods
strategies
to
improve
performance
analyzed
details.
Finally,
opportunities
challenges
faced
by
discussed.
This
review
will
bring
research
level,
promoting
wider
exploitation
practical
materials
sensors.
ACS Applied Materials & Interfaces,
Journal Year:
2023,
Volume and Issue:
15(4), P. 5811 - 5821
Published: Jan. 17, 2023
Flexible
strain
sensors
have
significant
progress
in
the
fields
of
human–computer
interaction,
medical
monitoring,
and
handwriting
recognition,
but
they
also
face
many
challenges
such
as
capture
weak
signals,
comprehensive
acquisition
information,
accurate
recognition.
can
sense
externally
applied
deformations,
accurately
measure
human
motion
physiological
record
signal
characteristics
handwritten
text.
Herein,
we
prepare
a
sandwich-structured
flexible
sensor
based
on
an
MXene/polypyrrole/hydroxyethyl
cellulose
(MXene/PPy/HEC)
conductive
material
PDMS
substrate.
The
features
wide
linear
detection
range
(0–94%),
high
sensitivity
(gauge
factor
357.5),
reliable
repeatability
(>1300
cycles),
ultrafast
response–recovery
time
(300
ms),
other
excellent
sensing
properties.
MXene/PPy/HEC
detect
activities,
exhibiting
performance
measuring
external
changes
real-time
detection.
In
addition,
signals
English
words,
Arabic
numerals,
Chinese
characters
by
volunteers
measured
unique
characteristics.
Through
machine
learning
technology,
different
are
successfully
identified,
recognition
accuracy
is
higher
than
96%.
results
show
that
has
impact
detection,
health
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(2), P. 2554 - 2563
Published: Jan. 3, 2024
Flexible
pressure
sensors
have
been
widely
concerned
because
of
their
great
application
potential
in
the
fields
electronic
skin,
human–computer
interaction,
health
detection,
and
so
on.
In
this
paper,
a
flexible
sensor
is
designed,
with
polydimethylsiloxane
(PDMS)
films
protruding
structure
as
elastic
substrate
poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate)
(PEDOT:PSS)/cellulose
nanocrystals
(CNC)
conductive-sensitive
material.
The
has
wide
linear
detection
range
(0–100
kPa),
outstanding
sensitivity
(2.32
kPa–1),
stability
more
than
2000
cycles.
proven
to
be
able
detect
human
movements
(finger
bending,
elbow
etc.)
small
(breathing,
pulse,
etc.).
addition,
array
can
distribution
judge
shape
object.
A
smart
wristband
equipped
four
designed.
Among
them,
k-nearest
neighbor
(KNN)
algorithm
used
classify
data
achieve
high
accuracy
(99.52%)
recognition
seven
kinds
wrist
posture.
This
work
provides
new
opportunity
fabricate
simple,
applications
next-generation
intelligent
robotics.
Journal of Materials Chemistry A,
Journal Year:
2024,
Volume and Issue:
12(16), P. 9371 - 9399
Published: Jan. 1, 2024
We
present
a
comprehensive
review
of
the
recent
research
advances
in
field
sensors
based
on
hydrogels
with
nanofillers.
The
characteristics
and
design
strategies
nanofillers
are
highlighted
multiple
properties
conductive
nanocomposite
described.
Small,
Journal Year:
2023,
Volume and Issue:
20(15)
Published: Nov. 27, 2023
Abstract
Flexible
sensors
are
highly
flexible,
malleable,
and
capable
of
adapting
todifferent
shapes,
surfaces,
environments,
which
opens
a
wide
range
ofpotential
applications
in
the
field
human‐machine
interface
(HMI).
Inparticular,
flexible
pressure
as
crucial
member
flexiblesensor
family,
widely
used
wearable
devices,
health
monitoringinstruments,
robots
other
fields
because
they
can
achieve
accuratemeasurement
convert
into
electrical
signals.
The
mostintuitive
feeling
that
bring
to
people
is
change
ofhuman‐machine
interaction,
from
previous
rigid
interaction
suchas
keyboard
mouse
such
smart
gloves,
more
inline
with
people's
natural
control
habits.
Many
advanced
pressuresensors
have
emerged
through
extensive
research
development,
adaptto
various
application.
Researchers
been
seeking
enhanceperformance
improving
materials,
sensingmechanisms,
fabrication
methods,
microstructures.
This
paper
reviews
HMI
recent
years,
mainlyincluding
following
aspects:
current
cutting‐edge
pressuresensors;
sensing
mechanisms,
substrate
materials
active
materials;
sensorfabrication,
performances,
their
optimization
methods;
flexiblepressure
for
prospects.
ACS Applied Materials & Interfaces,
Journal Year:
2023,
Volume and Issue:
15(15), P. 19435 - 19446
Published: April 10, 2023
Conductive
hydrogels
as
promising
candidates
of
wearable
electronics
have
attracted
considerable
interest
in
health
monitoring,
multifunctional
electronic
skins,
and
human-machine
interfaces.
However,
to
simultaneously
achieve
excellent
electrical
properties,
superior
stretchability,
a
low
detection
threshold
conductive
remains
an
extreme
challenge.
Herein,
ultrastretchable
high-conductivity
MXene-based
organohydrogel
(M-OH)
is
developed
for
human
monitoring
machine-learning-assisted
object
recognition,
which
fabricated
based
on
Ti3C2Tx
MXene/lithium
salt
(LS)/poly(acrylamide)
(PAM)/poly(vinyl
alcohol)
(PVA)
hydrogel
through
facile
immersion
strategy
glycerol/water
binary
solvent.
The
M-OH
demonstrates
remarkable
stretchability
(2000%)
high
conductivity
(4.5
S/m)
due
the
strong
interaction
between
MXene
dual-network
PVA/PAM
matrix
incorporation
LS,
respectively.
Meanwhile,
sensor
enables
with
sensitivity
limit
(12
Pa).
Furthermore,
pressure
mapping
image
recognition
technology,
8
×
pixelated
M-OH-based
sensing
array
can
accurately
identify
different
objects
accuracy
97.54%
under
assistance
deep
learning
neural
network
(DNN).
This
work
comprehensive
performances
high-conductive
would
further
explore
extensive
potential
application
prospects
personal
healthcare,
interfaces,
artificial
intelligence.
Small,
Journal Year:
2023,
Volume and Issue:
19(24)
Published: March 10, 2023
Abstract
Printed
flexible
electronics
have
emerged
as
versatile
functional
components
of
wearable
intelligent
devices
that
bridge
the
digital
information
networks
with
biointerfaces.
Recent
endeavors
in
plant
sensors
provide
real‐time
and
situ
insights
to
study
phenotyping
traits
crops,
whereas
monitoring
ethylene,
fundamental
phytohormone,
remains
challenging
due
lack
scalable
manufacturing
ethylene
sensors.
Here
all‐MXene‐printed
radio
frequency
(RF)
resonators
are
presented
for
wireless
detection.
The
facile
formation
additive‐free
MXene
ink
enables
rapid,
printed
electronics,
demonstrating
decent
printing
resolution
(2.5%
variation),
≈30000
S
m
−1
conductivity
mechanical
robustness.
Incorporation
MXene‐reduced
palladium
nanoparticles
(MXene@PdNPs)
facilitates
1.16%
response
at
1
ppm
0.084
limit
sensor
tags
attached
on
organ
surfaces
continuously
profiling
emission
inform
key
transition
biochemistry,
potentially
extending
application
enable
hormone
precision
agriculture
food
industrial
management.
ACS Nano,
Journal Year:
2024,
Volume and Issue:
18(36), P. 24705 - 24740
Published: Aug. 26, 2024
The
gradual
rise
of
personal
healthcare
awareness
is
accelerating
the
deployment
wearable
sensors,
whose
ability
acquiring
physiological
vital
signs
depends
on
sensing
materials.
MXenes
have
distinct
chemical
and
physical
superiorities
over
other
2D
nanomaterials
for
sensors.
This
review
presents
a
comprehensive
summary
latest
advancements
in
MXenes-based
materials
It
begins
with
an
introduction
to
special
structural
features
performance,
followed
by
in-depth
exploration
versatile
functionalities.
A
detailed
description
different
mechanisms
also
included
illustrate
contribution
performance
its
improvement.
In
addition,
real-world
applications
sensors
monitoring
are
as
well.
remaining
challenges
their
promising
opportunities
finally
narrated,
conjunction
prospective
future
development.