Applied Physics Reviews,
Journal Year:
2025,
Volume and Issue:
12(1)
Published: Feb. 12, 2025
Capacitive
tactile
sensors
have
garnered
significant
attention
due
to
their
simple
structure,
temperature
independence,
and
wide
applicability.
However,
with
the
continuous
evolution
of
intellectualization
process,
developing
that
can
compare
or
even
surpass
sensing
ability
human
skin
remains
a
challenge.
Consequently,
various
strategies
aimed
at
enhancing
performance
emerged,
introduction
morphological
structures
into
active
layer
being
most
effective.
In
light
this,
capacitive
based
on
structure
designs
gained
favor
among
researchers,
gradually
forming
“hundred
schools
thought
contend”
trend.
Nevertheless,
processes
applicability
yet
form
complete
system,
development
intelligence
morphological-engineering-based
reached
bottleneck
stage,
requiring
comprehensive
systematic
review
provide
inspiration
for
breakthroughs.
This
delves
deeply
impact
device
provides
overview
applicability,
advantages,
disadvantages
fabrication
technologies
derived
from
these
structures.
Finally,
progress
in
advanced
intelligent
systems
is
summarized,
challenges
prospects
faced
this
emerging
field
are
envisioned.
Nano Letters,
Journal Year:
2024,
Volume and Issue:
24(13), P. 4002 - 4011
Published: March 25, 2024
Empowering
robots
with
tactile
perception
and
even
thinking
as
well
judgment
capabilities
similar
to
those
of
humans
is
an
inevitable
path
for
the
development
future
robots.
Here,
we
propose
a
biomimetic
electronic
skin
(BES)
that
truly
serves
applies
achieve
superior
dynamic-static
material
cognition
functionalities.
First,
microstructured
triboelectric
piezoresistive
layers
are
fabricated
by
facile
template
method
followed
selected
self-polymerization
treatment,
enabling
BES
high
sensitivity
wide
detection
range.
Further,
through
laminated-independent
parts
perceiving
dynamic
static
pressures
simultaneously,
capable
supporting
robot
hand
monitor
entire
process
during
object
grasping.
Most
importantly,
further
combining
neural
network
model,
intelligent
system
constructed
real-time
species
via
one
touch
under
arbitrary
pressures,
which
goes
beyond
human
ability.
Advanced Science,
Journal Year:
2023,
Volume and Issue:
11(3)
Published: Nov. 29, 2023
Abstract
Developing
electronic
skins
(e‐skins)
that
are
comparable
to
or
even
beyond
human
tactile
perception
holds
significant
importance
in
advancing
the
process
of
intellectualization.
In
this
context,
a
machine‐learning‐motivated
micropyramid
array
bimodal
(MAB)
e‐skin
based
on
capacitive
sensing
is
reported,
which
enables
spatial
mapping
applications
(proximity
and
pressure)
implemented
via
fringing
iontronic
effects,
such
as
contactless
measurement
3D
objects
contact
recognition
Braille
letters.
Benefiting
from
effect
single‐micropyramid
structure,
MAB
pressure
mode
yields
impressive
features:
maximum
sensitivity
655.3
kPa
−1
(below
0.5
kPa),
linear
327.9
(0.5–15
an
ultralow
limit
detection
0.2
Pa.
With
assistance
multilayer
perceptron
convolutional
neural
network,
can
accurately
perceive
6
materials
10
surface
shapes
training
learning
using
collected
datasets
proximity
modes,
thus
allowing
it
achieve
precise
different
within
one
proximity‐pressure
cycle.
The
development
opens
new
avenue
for
robotic
skin
expansion
advanced
applications.
Advanced Science,
Journal Year:
2024,
Volume and Issue:
11(39)
Published: July 24, 2024
The
integrated
"perception-memory"
system
is
receiving
increasing
attention
due
to
its
crucial
applications
in
humanoid
robots,
as
well
the
simulation
of
human
retina
and
brain.
Here,
a
Field
Programmable
Gate
Array
(FPGA)
platform-boosted
that
enables
sensing,
recognition,
memory
for
human-computer
interaction
reported
by
combination
ultra-thin
Ag/Al/Paster-based
electronic
tattoos
(AAP)
Tantalum
Oxide/Indium
Gallium
Zinc
Oxide
(Ta
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 11, 2024
Abstract
Electronic
skins
(E‐Skins)
are
crucial
for
future
robotics
and
wearable
devices
to
interact
with
perceive
the
real
world.
Prior
research
faces
challenges
in
achieving
comprehensive
tactile
perception
versatile
functionality
while
keeping
system
simplicity
lack
of
multimodal
sensing
capability
a
single
sensor.
Two
kinds
sensors,
transient
voltage
artificial
neuron
(TVAN)
sustained
potential
(SPAN),
featuring
self‐generated
zero‐biased
signals
developed
realize
synergistic
information
(vibration,
material,
texture,
pressure,
temperature)
device
instead
complex
sensor
arrays.
Simultaneously,
machine
learning
feature
fusion
is
applied
fully
decode
their
output
compensate
inevitable
instability
force,
speed,
etc,
applications.
Integrating
TVAN
SPAN,
formed
E‐Skin
achieves
holistic
touch
awareness
only
unit.
It
can
thoroughly
an
object
through
simple
without
strictly
controlled
testing
conditions,
discern
surface
roughness
from
0.8
1600
µm,
hardness
6HA
85HD,
correctly
distinguish
16
objects
temperature
variance
0
80
°C.
The
E‐skin
also
features
scalable
fabrication
process,
which
be
integrated
into
various
broad
Nano Letters,
Journal Year:
2024,
Volume and Issue:
24(17), P. 5351 - 5360
Published: April 18, 2024
Ultrasensitive
and
reliable
conductive
hydrogels
are
significant
in
the
construction
of
human–machine
twinning
systems.
However,
extremely
cold
environments,
freezing
severely
limits
application
hydrogel-based
sensors.
Herein,
building
on
biomimetics,
a
zwitterionic
hydrogel
was
elaborated
for
interaction
employing
multichemical
bonding
synergies
experimental
signal
analyses.
The
covalent
bonds,
hydrogen
electrostatic
interactions
construct
dense
double
network
structure
favorable
stress
dispersion
bond
regeneration.
In
particular,
zwitterions
ionic
conductors
maintained
excellent
strain
response
(99
ms)
electrical
sensitivity
(gauge
factor
=
14.52)
while
immobilizing
water
molecules
to
enhance
weather
resistance
(−68
°C).
Inspired
by
high
sensitivity,
sensors
remote-control
gloves
were
designed
analyzing
signals,
demonstrating
promising
potential
applications
within
specialized
flexible
materials
symbiotic
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(44)
Published: June 22, 2024
Abstract
Tactile
sensors
have
garnered
considerable
interest
for
their
capacity
to
detect
and
quantify
tactile
information.
The
incorporation
of
microstructural
designs
into
flexible
has
emerged
as
a
potent
strategy
augment
sensitivity
pressure
variations,
thereby
enhancing
linearity,
response
spectrum,
mechanical
robustness.
This
review
underscores
the
imperative
progress
in
microstructured
sensors.
Subsequently,
discourse
transitions
prevalent
materials
employed
fabrication
sensor
electrodes,
encapsulation
layers,
active
sensing
mediums,
elucidating
merits
limitations.
In‐depth
discussions
are
devoted
adorned
with
microstructures,
including
but
not
limited
to,
micropyramids,
microhemispheres,
micropillars,
microporous
configurations,
microcracks,
topological
interconnections,
multilevel
constructs,
random
roughness,
biomimetic
microstructures
inspired
by
flora
fauna,
accompanied
exemplar
studies
from
each
category.
Moreover,
utility
within
realm
intelligent
environments
is
explicated,
highlighting
application
monitoring
physiological
signals,
detection
sliding
motions,
discernment
surface
textures.
culminates
critical
examination
paramount
challenges
predicaments
that
must
be
surmounted
further
development
enhance
functional
performance
sensors,
paving
way
integration
advanced
sensory
systems.
ACS Nano,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 12, 2025
Flexible
on-skin
electronics
present
tremendous
popularity
in
intelligent
electronic
skins
(e-skins),
healthcare
monitoring,
and
human-machine
interfaces.
However,
the
reported
e-skins
can
hardly
provide
high
permeability,
good
stretchability,
large
sensitivity
are
limited
long-term
stability
efficient
recyclability
when
worn
on
human
body.
Herein,
inspired
from
skin,
a
permeable,
stretchable,
recyclable
cellulose
aerogel-based
system
is
developed
by
sandwiching
screen-printed
silver
sensing
layer
between
biocompatible
CNF/HPC/PVA
(cellulose
nanofiber/hydroxypropyl
cellulose/poly(vinyl
alcohol))
aerogel
hypodermis
permeable
polyurethane
as
epidermis
layer.
The
displays
tensile
strength
of
1.14
MPa
strain
43.5%
while
maintaining
permeability.
embrace
appealing
performances
with
(gauge
factor
≈
238),
ultralow
detection
limit
(0.1%),
fast
response
time
(18
ms)
under
stimulus.
Owing
to
disconnection
reconnection
microcracks
layer,
both
strain/humidity
thermal
be
easily
achieved.
further
integrated
into
an
mask
for
patient-centered
power
supply
system,
switching
control
device,
wireless
Bluetooth
module.
Moreover,
prepared
enables
wearing
skin
without
irritation,
all
components
recaptured/reused
water.
This
material
strategy
highlights
potential
next-generation
permeability
environmental
friendliness.
