Tactile
sensors
are
the
cornerstone
of
modern
technology
development
by
mimicking
human
tactile
perception
and
providing
precise
diverse
mechanical
feedback
for
cutting-edge
fields
such
as
robotics,
medical
equipment,
virtual
reality.
However,
current
research
predominantly
concentrates
on
monitoring
normal
forces.
How
to
accurately
recognize
decouple
multidirectional
force
pairs
remains
a
challenge.
To
this
end,
we
design
sensor
modifying
cuprous
oxide
(Cu2O)
surface
zinc
nanorods
(ZnO
NRs)
arrays
integrating
it
with
transverse
force-to-vertical
conversion
structure.
As
result,
modification
boosts
piezoelectric
output
ZnO
sensitivity
17.25
nA
MPa-1,
which
is
about
3
times
higher
that
pure
ZnO.
The
mechanism
underlying
enhancement
illustrated
from
perspective
surface-engineered
heterojunction.
On
basis,
ability
detect
forces
verified
prototype,
can
monitor
in
12
directions
over
360°
range.
This
work
provides
new
strategy
designing
sensors,
showing
broad
application
prospect
human-machine
interaction
beyond.
Advanced Functional Materials,
Год журнала:
2023,
Номер
33(18)
Опубликована: Фев. 9, 2023
Abstract
Structured
piezoresistive
membranes
are
compelling
building
blocks
for
wearable
bioelectronics.
However,
the
poor
structural
compressibility
of
conventional
microstructures
leads
to
rapid
saturation
detection
range
and
low
sensitivity
devices,
limiting
their
commercial
applications.
Herein,
a
bioinspired
MXene‐based
device
is
reported,
which
can
effectively
boost
while
broadening
response
by
architecting
intermittent
villus‐like
microstructures.
Benefitting
from
two‐stage
amplification
effect
this
architecture,
developed
bioelectronics
exhibit
high
461
kPa
−1
broad
pressure
up
311
kPa,
about
20
5
times
higher
than
that
homogeneous
microstructures,
respectively.
Cooperating
with
deep‐learning
algorithm,
designed
capture
complex
human
movements
precisely
identify
motion
recognition
accuracy
99%.
Evidently,
architecture
biomimetic
strategy
may
pave
promising
avenue
overcome
limitation
in
bioelectronics,
provide
general
way
promote
its
large‐scale
Advanced Materials,
Год журнала:
2024,
Номер
36(26)
Опубликована: Апрель 4, 2024
Continuous
monitoring
of
blood
pressure
(BP)
and
multiparametric
analysis
cardiac
functions
are
crucial
for
the
early
diagnosis
therapy
cardiovascular
diseases.
However,
existing
approaches
often
suffer
from
bulky
intrusive
apparatus,
cumbersome
testing
procedures,
challenging
data
processing,
hampering
their
applications
in
continuous
monitoring.
Here,
a
heterogeneously
hierarchical
piezoelectric
composite
is
introduced
wearable
BP
function
monitoring,
overcoming
rigidity
ceramic
insensitivity
polymer.
By
optimizing
structure
components
composite,
developed
sensor
delivers
impressive
performances,
ensuring
accurate
at
Grade
A
level.
Furthermore,
hemodynamic
parameters
extracted
detected
signals,
such
as
local
pulse
wave
velocity,
output,
stroke
volume,
all
which
alignment
with
clinical
results.
Finally,
all-day
tracking
validates
reliability
stability
sensor,
highlighting
its
potential
personalized
healthcare
systems,
particularly
timely
intervention
disease.
Advanced Materials,
Год журнала:
2023,
Номер
36(8)
Опубликована: Окт. 4, 2023
Conformable
electronics
are
regarded
as
the
next
generation
of
personal
healthcare
monitoring
and
remote
diagnosis
devices.
In
recent
years,
piezoelectric-based
conformable
ultrasound
(cUSE)
have
been
intensively
studied
due
to
their
unique
capabilities,
including
nonradiative
monitoring,
soft
tissue
imaging,
deep
signal
decoding,
wireless
power
transfer,
portability,
compatibility.
This
review
provides
a
comprehensive
understanding
cUSE
for
use
in
biomedical
systems
summary
advancements.
Following
an
introduction
fundamentals
piezoelectrics
transducers,
critical
parameters
transducer
design
discussed.
Next,
five
types
with
advantages
limitations
highlighted,
fabrication
using
advanced
technologies
is
addition,
working
function,
acoustic
performance,
accomplishments
various
applications
thoroughly
summarized.
It
noted
that
application
considerations
must
be
given
tradeoffs
between
material
selection,
manufacturing
processes,
mechanical
integrity,
entire
integrated
system.
Finally,
current
challenges
directions
development
research
flow
provided
roadmap
future
research.
conclusion,
these
advances
fields
piezoelectric
materials,
spark
emerging
era
biomedicine
healthcare.
Biomimetics,
Год журнала:
2024,
Номер
9(5), С. 278 - 278
Опубликована: Май 7, 2024
Biomimetic
materials
have
become
a
promising
alternative
in
the
field
of
tissue
engineering
and
regenerative
medicine
to
address
critical
challenges
wound
healing
skin
regeneration.
Skin-mimetic
enormous
potential
improve
outcomes
enable
innovative
diagnostic
sensor
applications.
Human
skin,
with
its
complex
structure
diverse
functions,
serves
as
an
excellent
model
for
designing
biomaterials.
Creating
effective
coverings
requires
mimicking
unique
extracellular
matrix
composition,
mechanical
properties,
biochemical
cues.
Additionally,
integrating
electronic
functionality
into
these
presents
exciting
possibilities
real-time
monitoring,
diagnostics,
personalized
healthcare.
This
review
examines
biomimetic
their
role
healing,
well
integration
technologies.
It
discusses
recent
advances,
challenges,
future
directions
this
rapidly
evolving
field.
Abstract
Flexible
electronics
has
emerged
as
a
continuously
growing
field
of
study.
Two‐dimensional
(2D)
materials
often
act
conductors
and
electrodes
in
electronic
devices,
holding
significant
promise
the
design
high‐performance,
flexible
electronics.
Numerous
studies
have
focused
on
harnessing
potential
these
for
development
such
devices.
However,
to
date,
incorporation
2D
rarely
been
summarized
or
reviewed.
Consequently,
there
is
an
urgent
need
develop
comprehensive
reviews
rapid
updates
this
evolving
landscape.
This
review
covers
progress
complex
material
architectures
based
materials,
including
interfaces,
heterostructures,
2D/polymer
composites.
Additionally,
it
explores
wearable
energy
storage
conversion,
display
touch
technologies,
biomedical
applications,
together
with
integrated
solutions.
Although
pursuit
high‐performance
high‐sensitivity
instruments
remains
primary
objective,
also
warrants
consideration.
By
combining
multiple
functionalities
into
singular
device,
augmented
by
machine
learning
algorithms,
we
can
potentially
surpass
performance
existing
technologies.
Finally,
briefly
discuss
future
trajectory
burgeoning
field.
discusses
recent
advancements
sensors
made
from
their
applications
architecture
device
design.
npj Flexible Electronics,
Год журнала:
2024,
Номер
8(1)
Опубликована: Дек. 4, 2024
With
the
increasing
demand
for
wearable
electronic
products,
there
is
a
pressing
need
to
develop
devices
that
seamlessly
conform
contours
of
human
body
while
delivering
excellent
performance
and
reliability.
Traditional
rigid
fabrication
technologies
fall
short
meeting
these
requirements,
necessitating
exploration
advanced
flexible
offer
new
possibilities
designing
fabricating
stretchable
particularly
in
devices.
Over
time,
continuous
development
innovative
techniques
has
ushered
significant
improvements
design
freedom,
lightweight,
seamless
integration,
multifunctionality
electronics.
Here,
we
provide
comprehensive
overview
advancements
facilitated
by
technology
It
specifically
focuses
on
key
methods,
including
printed
electronics
fabrication,
soft
transfer,
3D
structure
deformation
fabrication.
By
highlighting
advancements,
it
sheds
light
challenges
prospects
further
technologies.
The
introduction
revolutionized
landscape
wearable/conformable
electronics,
expanding
their
application
domains,
streamlining
system
complexity
associated
with
customization,
manufacturing,
production,
opening
up
avenues
innovation
body-conformable
ACS Applied Materials & Interfaces,
Год журнала:
2023,
Номер
15(9), С. 12146 - 12153
Опубликована: Фев. 22, 2023
As
an
important
part
of
human-machine
interfaces,
piezoelectric
voice
recognition
has
received
extensive
attention
due
to
its
unique
self-powered
nature.
However,
conventional
devices
exhibit
a
limited
response
frequency
band
the
intrinsic
hardness
and
brittleness
ceramics
or
flexibility
fibers.
Here,
we
propose
cochlear-inspired
multichannel
acoustic
sensor
(MAS)
based
on
gradient
PVDF
nanofibers
for
broadband
by
programmable
electrospinning
technique.
Compared
with
common
electrospun
membrane-based
sensor,
developed
MAS
demonstrates
greatly
300%-broadened
substantially
334.6%-enhanced
output.
More
importantly,
this
can
serve
as
high-fidelity
auditory
platform
music
recording
human
recognition,
in
which
classification
accuracy
rate
reach
up
100%
coordination
deep
learning.
The
bionic
nanofiber
may
provide
universal
strategy
development
intelligent
bioelectronics.
