Nano-Micro Letters,
Journal Year:
2023,
Volume and Issue:
16(1)
Published: Nov. 20, 2023
Abstract
Flexible
strain
sensors
are
promising
in
sensing
minuscule
mechanical
signals,
and
thereby
widely
used
various
advanced
fields.
However,
the
effective
integration
of
hypersensitivity
highly
selective
response
into
one
flexible
sensor
remains
a
huge
challenge.
Herein,
inspired
by
hysteresis
strategy
scorpion
slit
receptor,
bio-inspired
(BFSS)
with
parallel
through-slit
arrays
is
designed
fabricated.
Specifically,
BFSS
consists
conductive
monolayer
graphene
viscoelastic
styrene–isoprene–styrene
block
copolymer.
Under
synergistic
effect
structures
materials,
can
achieve
both
frequency
response.
Remarkably,
exhibits
high
gage
factor
657.36,
precise
identification
vibration
frequencies
at
resolution
0.2
Hz
through
undergoing
different
morphological
changes
to
high-frequency
low-frequency
vibration.
Moreover,
possesses
wide
detection
range
(103
Hz)
stable
durability
(1000
cycles).
It
sense
recognize
signals
characteristics,
including
frequency,
amplitude,
waveform.
This
work,
which
turns
"treasure,"
provide
new
design
ideas
for
potential
applications
human–computer
interaction
health
monitoring
equipment.
Nano Letters,
Journal Year:
2024,
Volume and Issue:
24(23), P. 7125 - 7133
Published: May 29, 2024
Wearable
sensors
are
experiencing
vibrant
growth
in
the
fields
of
health
monitoring
systems
and
human
motion
detection,
with
comfort
becoming
a
significant
research
direction
for
wearable
sensing
devices.
However,
weak
moisture-wicking
capability
sensor
materials
leads
to
liquid
retention,
severely
restricting
sensors.
This
study
employs
pattern-guided
alignment
strategy
construct
microhill
arrays,
endowing
triboelectric
directional
capability.
Within
2.25
s,
can
quickly
directionally
remove
droplets,
driven
by
Laplace
pressure
differences
wettability
gradient.
The
exhibit
excellent
performance,
enabling
rapid
response/recovery
(29.1/37.0
ms),
thereby
achieving
real-time
online
respiration
movement
states.
work
addresses
long-standing
challenge
insufficient
driving
force
flexible
electronic
materials,
holding
implications
enhancing
application
potential
skin
ACS Nano,
Journal Year:
2024,
Volume and Issue:
18(13), P. 9365 - 9377
Published: March 22, 2024
The
emerging
field
of
wearable
electronics
requires
power
sources
that
are
flexible,
lightweight,
high-capacity,
durable,
and
comfortable
for
daily
use,
which
enables
extensive
use
in
electronic
skins,
self-powered
sensing,
physiological
health
monitoring.
In
this
work,
we
developed
the
core–shell
biocompatible
Cs2InCl5(H2O)@PVDF-HFP
nanofibers
(CIC@HFP
NFs)
by
one-step
electrospinning
assisted
self-assembly
method
triboelectric
nanogenerators
(TENGs).
By
adopting
lead-free
Cs2InCl5(H2O)
as
an
inducer,
CIC@HFP
NFs
exhibited
β-phase-enhanced
self-aligned
nanocrystals
within
uniaxial
direction.
interface
interaction
was
further
investigated
experimental
measurements
molecular
dynamics,
revealed
hydrogen
bonds
between
PVDF-HFP
induced
automatically
well-aligned
dipoles
stabilized
β-phase
NFs.
TENG
fabricated
using
nylon-6,6
significant
improvement
output
voltage
(681
V),
current
(53.1
μA)
peak
density
(6.94
W
m–2),
with
highest
reported
performance
among
TENGs
based
on
halide-perovskites.
energy
harvesting
monitoring
were
substantiated
human
motions,
showcasing
its
ability
to
charge
capacitors
effectively
operate
such
commercial
LEDs,
stopwatches,
calculators,
demonstrating
promising
application
biomechanical
sensing.
Industrial & Engineering Chemistry Research,
Journal Year:
2024,
Volume and Issue:
63(32), P. 14176 - 14189
Published: July 30, 2024
Bionic
electronic
skin,
with
its
integrated
biological
functions,
is
capable
of
sensing
and
responding
to
external
stimuli,
potentially
surpassing
the
ideal
flexibility
natural
skin
in
certain
aspects.
Most
current
preparation
strategies
employ
"bottom-up"
approach,
using
various
monomers
or
polymer
materials
construct
artificial
networks
through
physical
chemical
cross-linking,
leading
issues
complexity
limited
performance.
In
this
work,
we
adopted
a
"top-down"
strategy,
which
collagen
fiber
network
aluminum-tanned
sheepskin
was
utilized
as
scaffold
load
itaconic
acid
(IA)
hydroxyethyl
acrylate
(HEA).
The
subsequent
situ
polymerization
IA
HEA
led
formation
poly(itaconic
acid-co-hydroxyethyl
acrylate)
(P(IA-HEA))
filling
among
skeleton,
results
successful
fabrication
high-strength
bionic
based
on
(LIHEZ).
advantage
approach
that
it
can
retain
structure
properties
give
resulting
LIHEZ
multiple
functions
(e.g.,
electrical
conductivity,
adhesion,
bacteriostasis,
biocompatibility,
environmental
stability),
thereby
replicating
even
performance
animal
skin.
demonstrated
sensitive
stimulus
responsiveness
durability
could
serve
multimodal
sensors
(strain,
temperature,
humidity,
bioelectricity)
efficiently
monitor
human
movements,
physiological
signals,
changes
temperature
humidity.
This
diversified
data
collection
provides
reliable
assurance
for
monitoring
health.
present
construction
method
substrate
not
only
breaks
conventional
single
applications
but
also
new
insights
selection
flexible
device
substrates,
promising
be
next-generation
material
constructing
intelligent
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 12, 2024
Abstract
Personal
radiative
cooling
fabrics
are
a
promising
zero‐energy
solution
for
creating
cool
and
comfortable
microclimate
outdoor
crowds.
Despite
significant
progress,
achieving
efficient
under
some
extreme
situations,
such
as
thermal
shock
intensive
physical
activity,
remains
challenge.
Herein,
bioinspired
metafabric
with
dual‐gradient
Janus
design
is
reported
personal
evaporative
cooling.
The
hierarchical
fiber
structure
allows
an
excellent
solar
reflectance
of
99.4%
mid‐infrared
emittance
0.94,
inducing
skin
temperature
drop
17.8
°C
intense
sunlight.
Mesoporous
silica
nanoparticles
fixed
in
the
fibrous
network
can
store
capacity
by
atmospheric
moisture‐absorption
mild
humid
nighttime
release
moisture‐desorption
hot
daytime,
providing
additional
2.5
°C.
Dual‐gradient
endows
outstanding
sweat‐wicking
effect
high‐performance
sweat
capacity.
In
steady‐state
evaporation
tests,
maximum
consumption
only
0.5
ml
h
−1
to
temperature,
preventing
harmful
excessive
sweating.
Additionally,
also
possesses
favorable
wearability
color
expansibility.
Given
these
first‐rate
features,
will
pave
way
development
advanced
functional
fabrics.
Nano-Micro Letters,
Journal Year:
2024,
Volume and Issue:
16(1)
Published: March 21, 2024
Abstract
Thermoregulatory
textiles,
leveraging
high-emissivity
structural
materials,
have
arisen
as
a
promising
candidate
for
personal
cooling
management;
however,
their
advancement
has
been
hindered
by
the
underperformed
water
moisture
transportation
capacity,
which
impacts
on
thermophysiological
comfort.
Herein,
we
designed
wettability-gradient-induced-diode
(WGID)
membrane
achieving
MXene-engineered
electrospun
technology,
could
facilitate
heat
dissipation
and
moisture-wicking
transportation.
As
result,
obtained
WGID
obtain
temperature
of
1.5
°C
in
“dry”
state,
7.1
“wet”
was
ascribed
to
its
high
emissivity
96.40%
MIR
range,
superior
thermal
conductivity
0.3349
W
m
−1
K
(based
radiation-
conduction-controlled
mechanisms),
unidirectional
property.
The
proposed
design
offers
an
approach
meticulously
engineering
membranes
with
enhanced
transportation,
thereby
paving
way
developing
more
efficient
comfortable
thermoregulatory
textiles
high-humidity
microenvironment.
