Polymers,
Год журнала:
2024,
Номер
16(13), С. 1906 - 1906
Опубликована: Июль 3, 2024
This
study
explores
the
enhancement
of
electrical
conductivity
in
polymer
composites
by
incorporating
carbon
nanotubes
(CNTs)
into
a
co-continuous
poly(lactic
acid)/low-density
polyethylene
(PLA/LDPE)
blend,
creating
double
percolation
structure.
Theoretical
thermodynamic
predictions
indicate
that
CNTs
preferentially
localize
LDPE
phase.
The
threshold
PLA/LDPE/CNT
was
0.208
vol%
(5.56
wt%),
an
80%
reduction
compared
to
LDPE/CNT
composite,
due
migration
from
PLA
significantly
enhanced
conductivity,
achieving
13.8-fold
increase
at
7.5
wt%
CNT
loading
composite.
localization
driven
thermodynamic,
kinetic,
and
rheological
factors,
with
viscosity
differences
between
causing
dense
aggregation
LDPE.
Initial
contact
reduced
aggregation,
allowing
infiltrate
aggregates
during
melt-mixing,
which
influenced
final
morphology
conductivity.
These
findings
provide
new
insights
fabrication
conductive
for
force
sensor
applications.
Advanced Materials Technologies,
Год журнала:
2023,
Номер
8(24)
Опубликована: Окт. 16, 2023
Abstract
The
manufacturing
industry
has
witnessed
advancements
in
soft
robotics,
specifically
robotic
grippers
for
handling
fragile
or
irregular
objects.
However,
challenges
remain
balancing
shape
compliance,
structural
rigidity,
weight,
and
sensor
integration.
To
address
these
limitations,
a
3D‐printed
multimaterial
gripper
design
is
proposed.
This
approach
utilizes
single,
nearly
fully
automated
3D
printing
process
to
create
universal
with
almost
no
assembly
work.
By
processing
functional
polymer,
polymer
nanocomposite,
metal
wire
simultaneously,
this
technique
enables
multifunctionality.
achieves
different
gripping
configurations
by
adjusting
joint
stiffness
through
Joule
heating
of
conductive
polylactic
acid
material,
ensuring
conformance.
Embedded
wires,
created
using
an
in‐house
embedding
technique,
form
reliable
high‐current‐loading
interconnections
the
joints
acting
as
heater.
Additionally,
integrated
printed
thermoplastic
polyurethane
(TPU)
TPU
detects
compression
levels
discerns
handled
samples.
study
showcases
potential
on‐demand
fabrication
smart
variable
sensors,
benefiting
automation
industry.
Overall,
work
presents
effective
strategy
designing
fabricating
multifunctional
structures
soft,
rigid,
materials,
such
printing.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
unknown
Опубликована: Апрель 11, 2024
With
the
development
of
information
technology,
high-performance
wearable
strain
sensors
with
high
sensitivity
and
stretchability
have
played
a
significant
role
in
motion
detection.
However,
many
high-sensitivity
outstanding-stretchability
possess
limited
linear
sensing
range,
which
limits
enhancement
flexible
sensors'
performance.
Herein,
we
develop
hybrid-structured
carbon
nanotube
(CNT)/Ecoflex
sensor
laser-engraved
grooves
along
punched
circular
holes
composite
CNT/Ecoflex
film
by
vacuum
filtration
permeation.
By
optimizing
distribution
holes,
layer
can
be
locally
regulated,
alters
morphology
cracks
under
allows
to
simultaneously
exhibit
(GF
=
43.8)
as
well
wide
range
(200%).
On
basis
excellent
performance,
is
capable
detecting
movements
various
parts
human
body,
including
larynx
joint
bending.
Nanotechnology,
Год журнала:
2024,
Номер
35(20), С. 202001 - 202001
Опубликована: Фев. 7, 2024
Abstract
Nanotechnology
has
led
to
the
realisation
of
many
potential
Internet
Things
devices
that
can
be
transformative
with
regards
future
healthcare
development.
However,
there
is
an
over
saturation
wearable
sensor
review
articles
essentially
quote
paper
abstracts
without
critically
assessing
works.
Reported
metrics
in
cases
cannot
taken
at
face
value,
researchers
overly
fixated
on
large
gauge
factors.
These
facts
hurt
usefulness
such
and
very
nature
research
area,
unintentionally
misleading
those
hoping
progress
field.
Graphene
MXenes
are
arguably
most
exciting
organic
inorganic
nanomaterials
for
polymer
nanocomposite
strain
sensing
applications
respectively.
Due
their
combination
cost-efficient,
scalable
production
device
performances,
commercial
usage
promising.
Here,
we
explain
methods
colloidal
nanosheets
suspension
creation
mechanisms,
models
which
govern
electromechanical
properties
polymer-based
nanocomposites
they
form.
Furthermore,
fabrication
procedures
applied
make
these
nanosheet-based
discussed.
With
performances
70
different
systems
from
recent
(post
2020)
publications
assessed.
From
evaluation
works
using
universal
modelling,
prospects
field
considered.
Finally,
argue
may
fact
have
a
negative
effect
global
climate
crisis
if
current
trends
do
not
change.
ACS Nano,
Год журнала:
2024,
Номер
18(11), С. 8296 - 8306
Опубликована: Март 7, 2024
Mechanical
compliance
and
electrical
enhancement
are
crucial
for
pressure
sensors
to
promote
performances
when
perceiving
external
stimuli.
Here
we
propose
a
bioinspired
multiscale
heterogeneity-based
interface
adaptively
regulate
its
structure
layout
switch
desirable
piezoresistive
behaviors
with
ultralow
detection
limitation.
In
such
heterogeneities
system,
the
micro-/nanoscale
spiny
Ag-MnO2
heterostructure
contributes
an
limitation
of
0.008
Pa
can
perceive
minor
increments
under
preloads
high
resolution
(0.0083%).
The
macroscale
heterogeneous
orientation
cellular
backbone
enables
anisotropic
deformation,
allowing
sensor
rational
sensitivity
working
range
(e.g.,
580
kPa–1
0–20
kPa/54
60–140
kPa)
as
required.
sensor's
stepwise
activation
progresses
from
orientation,
which
match
diverse
sensing
tasks
in
complex
applications
scenarios.
This
switchable
design
holds
immense
potential
development
intelligent
electromechanical
devices,
including
wearable
sensors,
soft
robotics,
smart
actuators.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 20, 2024
With
the
growing
demand
for
flexible
sensing
systems
and
precision
engineering,
there
is
an
increasing
need
sensors
that
can
accurately
measure
analyze
multimode
signals.
3D
printing
technology
has
emerged
as
a
crucial
tool
in
development
of
multimodal
due
to
its
advantages
design
flexibility
manufacturing
complex
structures.
This
paper
provides
review
recent
advancements
within
field
sensors,
with
particular
emphasis
on
relevant
working
mechanisms
involved
decoupling
First,
research
status
printed
discussed,
including
their
responsiveness
different
modal
stimuli
such
mechanics,
temperature,
gas.
Furthermore,
it
explores
methods
signals
through
structural
material
design,
artificial
intelligence,
other
technologies.
Finally,
this
summarizes
current
challenges
limited
selection,
difficulties
miniaturization
integration,
crosstalk
between
multisignal
outputs.
It
also
looks
forward
future
directions
area.
