Abstract
Rapid
humidity
response
contributes
tremendously
to
visually
flexible
wearables.
However,
sluggish
response,
infrequent
reproducibility,
and
biotoxicity
restrict
the
development
of
wearable
devices.
Here,
inspired
by
changes
in
color
Dynastes
hercules
,
a
wearable,
rapid
stretchable,
rewritable
meta‐silk
fibroin
diffractive
film
(mSFD)
is
presented.
The
generated
spin‐coating
silk
protein
polyurethane
(PU)
cross‐linking,
followed
hot
pressing
meta‐structures.
Owing
diffraction
stable
combination
SF
β
‐structure
PU
hydrogen
bond,
mSFDs
exhibit
excellent
coloration,
erasability.
Notably,
microcolumns
microporous
structures
on
meta‐membrane
endow
membrane
with
unparalleled
features.
Fast
disappearance
reappearance
are
observed
under
high
conditions
(response
time
<2
ms,
cycle
1
s).
In
particular,
responsiveness
mSFP
induces
change
membrane,
which
enables
its
application
real‐time
biomonitoring
(wound
management,
mask
regulation)
anticounterfeiting
(medicine
storage,
fingerprint
recognition).
These
properties
bioinspired
mSFD
P
potential
field
robotic
skin.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(16)
Published: Jan. 6, 2024
Abstract
Electronic
waste
is
a
growing
threat
to
the
global
environment
and
human
health,
raising
particular
concerns.
Triboelectric
devices
synthesized
from
sustainable
degradable
materials
are
promising
electronic
alternative,
but
mechanical
mismatch
at
interface
between
polymer
substrate
electrodes
remains
unresolved
in
practical
applications.
This
study
uses
sulfhydryl
silanization
reaction
chemical
selectivity
site
specificity
of
thiol–disulfide
exchange
dynamic
covalent
chemistry
prepare
tough
monolithic‐integrated
triboelectric
bioplastic.
The
stress
dissipated
by
bond
adaptation
interaction,
which
makes
dielectric
layer
conductive
have
good
adhesion
effect
(220.55
kPa).
interfacial
interlocking
with
gives
bioplastic
excellent
tensile
strength
(87.4
MPa)
fracture
toughness
(33.3
MJ
m
−3
).
Even
when
subjected
tension
force
10
000
times
its
weight,
it
still
maintains
stable
output
no
visible
cracks.
provides
new
insights
into
design
reliable
environmentally
friendly
self‐powered
devices,
significant
for
development
flexible
wearable
electronics.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(29)
Published: Feb. 20, 2024
Abstract
The
rapid
development
of
wearable
electronics
has
placed
higher
demands
on
the
design
strategies
triboelectric
materials.
Aerogels
have
potential
to
become
advanced
materials,
however,
traditional
often
require
complex
processes
and
additional
chemical
cross‐linking
agents
improve
stability
gel
structure,
which
limits
its
practical
application.
In
this
work,
a
scalable
sustainable
self‐assembly
drive
strategy
is
proposed
for
bio‐based
aerogels
with
multi‐scale
winding
structures.
Interestingly,
autoacceleration
effect,
regarded
as
“unfavorable”
during
autocatalytic
polymerization
supramolecules,
rationally
exploited
provide
supramolecules
within
matrix
an
abundance
multiple
hydrogen
bonds
at
same
time
their
gelation
occurs.
Thanks
this,
aerogel
film
exhibits
ultra‐high
tensile
strength
(104
MPa)
remains
undeformed
after
resisting
impact
8000
times
own
weight.
Highly
robust
films
are
used
build
self‐powered
sensors
ultra‐fast
response
in
environments
(48
ms),
while
enabling
real‐time
interaction
between
wearer
information
network.
idea
“
turning
detriment
into
asset
”
work
provides
new
material
construction
highly
sensors.
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
33(45)
Published: July 4, 2023
Abstract
Triboelectric
probes
have
rapidly
developed
as
an
efficient
tool
for
understanding
contact
electrification
at
liquid–solid
interfaces.
However,
the
process
is
susceptible
to
interference
from
chemical
components
in
mixed
solutions,
severely
limiting
potential
applications
of
triboelectric
various
liquid
environments.
This
study
first
time
reports
a
probe
capable
sucrose
solution
concentration
sensing,
finding
that
dissolution
destroys
hydrogen
bond
network
between
water
molecules
and
forms
sucrose–water
bonds,
which
alters
fluid
mechanics
characteristics
enhances
its
conductivity,
thereby
reducing
droplet
size
causing
ion
charge
shielding
effect
significantly
affects
electron
transfer
electrification.
Owing
feedback
on
gradient‐type
sensing
electrical
signals,
was
achieved
(sensitivity
−0.0038%
−1
,
response
90
ms).
The
also
used
wireless
smart
terminal
enable
real‐time
detection
solution.
work
contributes
structure–function
relationship
micro
bonding
macro
performance,
provides
promising
building
sustainable
intelligent
sensors.
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: April 30, 2024
Triboelectric
nanogenerators
(TENGs)
are
sustainable
energy
resources
for
powering
electronic
devices
from
miniature
to
large-scale
applications.
However,
their
output
performance
and
stability
can
deteriorate
significantly
when
TENGs
exposed
moisture
or
humidity
caused
by
the
ambient
environment
human
physiological
activities.
This
review
provides
an
overview
of
recent
research
advancements
in
enhancing
resistance
TENGs.
Various
approaches
have
been
reviewed
including
encapsulation
techniques,
surface
modification
triboelectric
materials
augment
hydrophobicity
superhydrophobicity,
creation
fibrous
architectures
effective
dissipation,
leveraging
water
assistance
TENG
enhancement,
other
strategies
like
charge
excitation.
These
efforts
contribute
improvement
environmental
adaptability
lead
expanded
practical
applications
both
as
harvesters
self-powered
sensors.
The
efficacy
these
future
challenges
also
discussed
facilitate
continued
development
resilient
high
environments.
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
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(34)
Published: April 13, 2024
Abstract
Non‐contact
intelligent
sensing
technology
is
a
key
player
in
the
data
acquisition
and
environmental
monitoring
framework
of
Internet
Everything,
laying
groundwork
for
realization
highly
integrated
network
systems.
However,
factors
continue
to
be
major
challenge
process
real‐time
feedback
objects,
constraining
stability
accuracy
signals.
In
this
study,
hierarchical
spatial
assembly
strategy
implemented
effectively
integrate
an
intermediate
energy
storage
layer
with
superhydrophobic
surfaces
(CA
=
162
±
2.5°),
resulting
development
moisture‐resistant
triboelectric
structural
materials
stable
tracking
capabilities.
The
self‐powered
sensor
constructed
from
material
operates
extreme
humidity
conditions
(99%
RH)
full‐scale
output
retention
rate
95.2%,
capable
accurately
human
activity
distance
3
m.
Importantly,
can
also
detect
vehicle
states
during
operation
perform
vehicle's
surrounding
environment.
This
study
not
only
overcomes
long‐standing
challenges
high
sensors
but
advances
sustainable,
interconnected
systems
Everything
conditions.
