Biomimetic Flexible Capacitive Sensor with Loop Electrode and Snail Tentacle Structure for Enhanced Proximity and Pressure Sensing
X. D. Ruan,
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Yunong Zhao,
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Xiaowen Zhu
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et al.
ACS Applied Materials & Interfaces,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 23, 2025
Flexible
electronics
have
garnered
significant
attention
due
to
their
promising
applications
in
embodied
intelligence,
smart
interaction,
and
human-machine
interface
(HMI).
In
particular,
flexible
sensors
with
a
detectability
of
proximity
pressure
hold
great
potential
areas
such
as
touchless
control,
health
monitoring,
robotic
perception.
Here,
we
present
biomimetic
capacitive
sensor,
called
the
loop
electrode
bioinspired
snail
tentacle
sensor
(LEBSTS).
The
loop-patterned
layer
enhances
sensing
via
fringing
field
effect,
while
tentacle-structured
polydimethylsiloxane
(PDMS)
dielectric
provides
high
sensitivity
for
detection.
above
design
significantly
improves
performance,
achieving
long-range
detection
140
mm,
wide
pressure-detection
range
from
0.9
Pa
500
kPa,
2.844
kPa-1
(0-1
kPa),
fast
response
time
87.5
ms.
Moreover,
demonstrates
good
durability,
maintaining
stable
performance
over
4500
cycles.
Furthermore,
application
was
explored,
including
human
motion
HMI,
Morse
code
transmission
LoRa
wireless
communication,
visualization
systems.
This
work
insights
into
development
high-performance
multifunctional
offering
platform
advanced
intelligent
applications.
Language: Английский
Transparent, Stretchable PVC–Liquid Metal Composite Sensor for Smart Wearable Electronics
Yuwei Lan,
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Shujia Chen,
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Tianyun Dong
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et al.
ACS Applied Materials & Interfaces,
Journal Year:
2025,
Volume and Issue:
unknown
Published: June 3, 2025
Flexible
sensors
based
on
liquid
metal
(LM)
fillers
have
attracted
increasing
attention
due
to
their
excellent
stretchability,
flexibility,
and
biocompatibility.
However,
simultaneously
achieving
transparency,
high
sensitivity,
robust
mechanical
performance
remains
a
major
challenge.
In
this
study,
we
present
transparent
stretchable
flexible
composite
sensor
fabricated
by
combining
poly(vinyl
chloride)
(PVC)
with
dibutyl
adipate
(DBA)
incorporating
low
concentration
(0.1
wt
%)
of
LM
as
the
conductive
phase.
The
exhibits
transparency
50.12%,
resulting
from
optical
clarity
PVC/DBA
matrix,
nanoscale
dispersion
droplets,
formation
Ga3+
ions
upon
partial
surface
oxidation,
which
collectively
reduce
light
scattering
absorption.
PVC
also
acts
stabilizing
forming
protective
interface
around
droplets
enhance
interfacial
stability.
demonstrates
stretchability
(530%),
sensitivity
(gauge
factor
=
4.27),
reliable
in
humid
saline
environments.
This
work
offers
practical
strategy
for
developing
transparent,
durable,
high-performance
wearable
electronics
intelligent
systems.
Language: Английский