npj Flexible Electronics,
Год журнала:
2024,
Номер
8(1)
Опубликована: Янв. 6, 2024
Abstract
Noncontact
humidity
sensor
overcomes
the
limitations
of
its
contact
sensing
counterparts,
including
mechanical
wear
and
cross
infection,
which
becomes
a
promising
candidate
in
healthcare
human-machine
interface
application.
However,
current
sensors
still
suffer
ubiquitous
issue
uncomfortable
skin
irritation
hindering
long-term
use.
In
this
study,
we
report
skin-conformal
breathable
assembled
by
anchoring
MXenes-based
composite
into
electrospun
elastomer
nanofibers
coated
with
patterned
electrode.
This
is
highly
sensitive
to
water
molecules
due
large
specific
surface
area
abundant
water-absorbing
hydroxyl
groups,
while
elastomeric
provide
an
ultrathin,
flexible,
permeable
substrate
support
functional
materials
electrodes.
presents
not
only
excellent
air
permeability
(0.078
g
cm
−2
d
−1
),
high
sensitivity
(
S
=
704),
fast
response/recovery
(0.9
s/0.9
s),
but
also
conformability
biocompatibility.
Furthermore,
confirmed
realize
recognition
motional
states
emotional
modes,
provides
way
for
advanced
noncontact
interface.
Opto-Electronic Advances,
Год журнала:
2023,
Номер
6(11), С. 230094 - 230094
Опубликована: Янв. 1, 2023
Surface-enhanced
Raman
scattering
(SERS)
substrates
based
on
chemical
mechanism
(CM)
have
received
widespread
attentions
for
the
stable
and
repeatable
signal
output
due
to
their
excellent
stability,
uniform
molecular
adsorption
controllable
orientation.
However,
it
remains
huge
challenges
achieve
optimal
SERS
diverse
molecules
with
different
band
structures
same
substrate.
Herein,
we
demonstrate
a
graphene
oxide
(GO)
energy
regulation
strategy
through
ferroelectric
polarization
facilitate
charge
transfer
process
improving
activity.
The
Fermi
level
(Ef)
of
GO
can
be
flexibly
manipulated
by
adjusting
direction
or
temperature
Experimentally,
kelvin
probe
force
microscopy
(KPFM)
is
employed
quantitatively
analyze
Ef
GO.
Theoretically,
density
functional
theory
calculations
are
also
performed
verify
proposed
modulation
mechanism.
Consequently,
response
(R6G,
CV,
MB,
PNTP)
improved
changes
without
necessity
redesign
This
work
provides
novel
insight
into
substrate
design
CM
expected
applied
other
two-dimensional
materials.
Nano-Micro Letters,
Год журнала:
2023,
Номер
16(1)
Опубликована: Ноя. 13, 2023
The
recent
wave
of
the
artificial
intelligence
(AI)
revolution
has
aroused
unprecedented
interest
in
intelligentialize
human
society.
As
an
essential
component
that
bridges
physical
world
and
digital
signals,
flexible
sensors
are
evolving
from
a
single
sensing
element
to
smarter
system,
which
is
capable
highly
efficient
acquisition,
analysis,
even
perception
vast,
multifaceted
data.
While
challenging
manual
perspective,
development
intelligent
been
remarkably
facilitated
owing
rapid
advances
brain-inspired
AI
innovations
both
algorithm
(machine
learning)
framework
(artificial
synapses)
level.
This
review
presents
progress
emerging
AI-driven,
systems.
basic
concept
machine
learning
synapses
introduced.
new
enabling
features
induced
by
fusion
comprehensively
reviewed,
significantly
applications
such
as
sensory
systems,
soft/humanoid
robotics,
activity
monitoring.
two
most
profound
twenty-first
century,
deep
incorporation
technology
holds
tremendous
potential
for
creating
beings.
Advanced Materials,
Год журнала:
2023,
Номер
35(41)
Опубликована: Июнь 26, 2023
The
utilization
of
printing
techniques
for
the
development
high-performance
humidity
sensors
holds
immense
significance
various
applications
in
fields
Internet
Things,
agriculture,
human
healthcare,
and
storage
environments.
However,
long
response
time
low
sensitivity
current
printed
limit
their
practical
applications.
Herein,
a
series
high-sensing-performance
flexible
resistive-type
is
fabricated
by
screen-printing
method,
hexagonal
tungsten
oxide
(h-WO3
)
employed
as
humidity-sensing
material
due
to
its
cost,
strong
chemical
adsorption
ability,
excellent
ability.
as-prepared
exhibit
high
sensitivity,
good
repeatability,
outstanding
flexibility,
hysteresis,
fast
(1.5
s)
wide
relative
(RH)
range
(11-95%
RH).
Furthermore,
can
be
easily
adjusted
altering
manufacturing
parameters
sensing
layer
interdigital
electrode
meet
diverse
requirements
specific
possess
potential
applications,
including
wearable
devices,
non-contact
measurements,
packaging
opening
state
monitoring.
Chemical Reviews,
Год журнала:
2023,
Номер
123(8), С. 4693 - 4763
Опубликована: Фев. 8, 2023
Fibers,
originating
from
nature
and
mastered
by
human,
have
woven
their
way
throughout
the
entire
history
of
human
civilization.
Recent
developments
in
semiconducting
polymer
materials
further
endowed
fibers
textiles
with
various
electronic
functions,
which
are
attractive
applications
such
as
information
interfacing,
personalized
medicine,
clean
energy.
Owing
to
ability
be
easily
integrated
into
daily
life,
soft
fiber
electronics
based
on
polymers
gained
popularity
recently
for
wearable
implantable
applications.
Herein,
we
present
a
review
previous
current
progress
polymer-based
electronics,
particularly
focusing
smart-wearable
areas.
First,
provide
brief
overview
viewpoint
basic
concepts
functionality
requirements
different
devices.
Then
analyze
existing
associated
devices
interfaces,
healthcare
energy
conversion
storage.
The
working
principle
performance
summarized.
Furthermore,
focus
fabrication
techniques
Based
continuous
one-dimensional
yarn,
introduce
two-
three-dimensional
fabric
fabricating
methods.
Finally,
challenges
relevant
perspectives
potential
solutions
address
related
problems.
Advanced Materials,
Год журнала:
2024,
Номер
36(16)
Опубликована: Янв. 23, 2024
Abstract
With
the
commercialization
of
first‐generation
flexible
mobiles
and
displays
in
late
2010s,
humanity
has
stepped
into
age
electronics.
Inevitably,
soft
multifunctional
sensors,
as
essential
components
next‐generation
electronics,
have
attracted
tremendous
research
interest
like
never
before.
This
review
is
dedicated
to
offering
an
overview
latest
emerging
trends
sensors
their
accordant
future
development
(R&D)
directions
for
coming
decade.
First,
key
characteristics
predominant
target
stimuli
are
highlighted.
Second,
important
selection
criteria
introduced.
Next,
materials/structures
identified.
Specifically,
R&D
these
envisaged
based
on
trends,
namely
i)
decoupling
multiple
stimuli,
ii)
data
processing,
iii)
skin
conformability,
iv)
energy
sources.
Finally,
challenges
potential
opportunities
discussed,
new
insights
prospects
fast‐emerging
technology.
Materials Science and Engineering R Reports,
Год журнала:
2023,
Номер
154, С. 100734 - 100734
Опубликована: Май 15, 2023
The
application
of
wearable
sensors
in
domains
related
to
healthcare
systems,
human
motion
detection,
robotics,
and
human–machine
interactions
has
attracted
significant
attention.
Because
these
applications
require
stretchable,
flexible,
non-invasive
materials,
polymer
composites
are
now
at
the
forefront
research
aimed
preparing
innovative
sensors.
Three-dimensional
(3D)
printing
techniques
can
be
used
obtain
highly
customised
scalable
fabricate
sensors,
which
is
a
challenging
task
for
conventional
fabrication
techniques.
This
review
provides
insights
into
prospects
commonly
conductive
nanomaterials
3D
prepare
devices.
Subsequently,
progress,
sensing
mechanisms,
performance
3D-printed
such
as
strain,
pressure,
temperature,
humidity
discussed.
In
addition,
novel
multifunctional
multi-directional,
multi-modal,
self-healable,
self-powered,
situ
printed,
ultrasonic
highlighted.
challenges
future
trends
further
development
clarified.
The Journal of Physical Chemistry Letters,
Год журнала:
2023,
Номер
14(25), С. 5932 - 5939
Опубликована: Июнь 22, 2023
To
improve
the
drawback
of
surface-enhanced
Raman
scattering
(SERS)
sensors
that
are
sensitive
to
excitation
angles
and
realize
monitoring
contaminants
in
complex
environments,
we
have
proposed
prepared
a
cascaded
wire-in-cavity-in-bowl
(WICIB)
structure
on
flexible
polydimethysiloxane,
with
feasibility
for
plasmonic
coupling.
We
demonstrated
WICIB
can
serve
as
highly
sensitive,
homogeneous,
stable
SERS
substrate
conventional
detection.
The
coupling
distribution
enhanced
electromagnetic
field
were
evidently
proven
by
finite
element
simulations,
strong
was
regulated
around
wire
inside
cavity,
which
is
very
beneficial
polydirectional
situ
By
virtue
triple
synergistic
enhancement
effect
unique
optical
properties,
successfully
achieved
detection
residual
pollutant
molecules,
ziram
2-naphthalenethiol,
microdroplets
apple
juice
lake
water.
Accordingly,
such
sensor
exhibits
great
potential
on-site
environmental
monitoring.
Chemical Engineering Journal,
Год журнала:
2023,
Номер
480, С. 147981 - 147981
Опубликована: Дек. 12, 2023
To
explore
the
potential
of
Ti3C2Tx-MXenes
as
an
electrode
over
traditional
metals,
we
designed
a
high-performance
and
cost-effective
humidity
sensor
using
2D
Ti3C2Tx
MXene
nanosheets
(TMNSs)
electrodes
Graphene
oxide
(GO)
sensing
layer.
The
was
fabricated
on
flexible
transparent
Cyclic
Olefin
Copolymer
(COC)
substrate
UV-photolithography,
spin
coating,
spray
coating
techniques.
Electrical
impedance
measurements
demonstrated
sensor's
remarkable
sensitivity
to
humidity,
with
response
range
6
%
97
at
frequencies
1
kHz
10
kHz.
exhibited
fast
recovery
times
0.8
s
0.9
s,
respectively,
maintained
stable
performance
24
h.
We
further
employed
DFT
simulations
establish
atomic
level
understanding
sensing.
findings
presence
physical
bond
between
hydrogen
(H)
oxygen
(O)
atoms,
which
are
part
water
molecule
OH
group,
in
process
Furthermore,
OH-configuration
graphene
acts
main
active
site
sensing,
outperforming
O-configuration,
due
its
higher
adsorption
energy
charge
transfer.
Moreover,
real-world
applications
for
this
materials-based
were
demonstrated,
including
non-contact
proximity
human
breathing
detection,
demonstrating
potential.
This
study
makes
substantial
contribution
development
low-cost
sensors
based
materials,
implications
wide
applications.
