Polysaccharides,
Journal Year:
2024,
Volume and Issue:
5(4), P. 761 - 782
Published: Dec. 2, 2024
In
the
quest
for
sustainable
and
efficient
solutions
modern
electronics,
flexible
electronic
devices
have
garnered
global
attention
due
to
their
potential
revolutionize
various
technological
applications.
The
manufacturing
of
these
poses
significant
challenges,
particularly
regarding
environmental
sustainability
ease
production.
A
novel
method
employing
direct
inkjet
printing
silver
nanoparticle
(npAg)
ink
onto
cellulose
nanocrystal
(CNC)
substrates
is
presented,
offering
a
promising
alternative
conventional
methods.
This
study
demonstrates
ability
CNCs
serve
as
biodegradable
substrate
that
does
not
require
complex
post-printing
treatments
achieve
adequate
electrical
performance.
was
implemented
in
fabrication
an
electrowetting-on-dielectric
(EWOD)
device,
achieving
circuit
patterns
with
high
resolutions
reduced
resistances.
findings
only
validate
use
applications
but
also
underscore
advanced
techniques
develop
electronics
are
environmentally
technically
feasible.
Advanced Theory and Simulations,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 1, 2025
Abstract
This
study
introduces
a
compact
quad‐element
Multiple‐Input
Multiple‐Output
(MIMO)
all‐textile
antenna
designed
for
Ultra‐Wideband
(UWB)
Internet
of
Things
(IoT)
applications.
The
employs
felt
as
the
substrate
and
conductive
fabric
radiating
element,
optimizing
it
wearable
devices.
Its
pentagon‐shaped
radiator
with
L‐shaped
slots,
partial
rectangular
ground,
circular
parasitic
patch
ensures
UWB
response.
orthogonal
arrangement
elements
enhances
MIMO
performance,
while
slotted
structure
vertical
interconnects
provides
high
isolation
(>20
dB)
unified
ground
plane.
Simulations
demonstrate
an
operational
bandwidth
21–50
GHz
81.69%
impedance
(–10
dB
return
loss),
peak
gain
8.92
dBi
at
27.5
GHz,
radiation
efficiency
exceeding
89%.
Specific
Absorption
Rate
(SAR)
values
29,
38,
44
are
within
safe
limits
(0.315,
0.248,
0.446
W/kg
−1
,
respectively).
Additionally,
diversity
metrics
such
Envelope
Correlation
Coefficient
(ECC
<
0.003)
Diversity
Gain
(DG
≈
10)
indicate
excellent
performance.
flexible,
high‐speed,
reliable
is
promising
solution
future
IoT
systems,
meeting
requirements
communication
operation
outstanding
characteristics.
Journal of Science Advanced Materials and Devices,
Journal Year:
2024,
Volume and Issue:
9(4), P. 100778 - 100778
Published: Aug. 23, 2024
Radio
frequency
identification
(RFID)
is
an
emerging
technology
that
has
a
crucial
role
in
many
areas.
To
be
suitable
for
these
applications,
RFID
tags
must
flexible,
which
presents
greater
manufacturing
challenges.
Printing
as
additive
method
preferred
over
subtractive
processes
due
to
its
efficient
use
of
materials
and
environmental
friendliness.
This
review
key
properties
the
printed
patterns,
namely
electrical
conductivity,
layer
thickness,
surface
morphology.
It
links
them
reading
distance
between
tag
reader.
The
types
conductive
inks
their
achieving
long-read
flexible
antennas
are
also
discussed.
substrates
linked
printing
process
presented.
These
were
classified
into
paper,
polymer,
textiles.
article
considers
two
laboratory-scale
techniques
commonly
used
research:
inkjet
screen
printing.
parameters
affect
quality
covered.
Furthermore,
electroless
plating
presented
metallization
or
complementary
other
techniques.
Polymers for Advanced Technologies,
Journal Year:
2024,
Volume and Issue:
35(9)
Published: Sept. 1, 2024
Abstract
The
relentless
drive
towards
miniaturization
and
seamless
integration
of
electronic
components
in
wireless
communications
wearable
devices
has
significantly
increased
the
demand
for
flexible,
cost‐effective
composites
with
high
dielectric
constants
low
losses.
This
study
presents
a
wideband,
low‐profile,
flexible
antenna
excellent
on
body
radiation
performance
applications.
is
designed
using
low‐loss
composite
film
based
PMMA‐PVDF‐HFP‐PZT
silver‐based
ink.
proposed
exhibits
wide
bandwidth
132.16%
voltage
standing
wave
ratio
(VSWR)
less
than
two.
It
achieves
peak
gain
2.76
dBi
at
2.92
GHz
maintains
maximum
efficiency
80%
across
1.26–6.17
frequency
range.
These
characteristics
demonstrate
that
an
effective
solution
achieving
data
rates
reliable
communication
links.
antenna's
suitability
applications
assessed
by
testing
it
simulated
human
analyzing
its
behavior
under
physical
deformation.
results
bending
showed
only
minimal
detuning,
which
negligible
given
operational
bandwidth.
specific
absorption
rate
(SAR)
analysis
shows
values
approximately
1.88
W/kg
3.5
input
power
0.5
W,
0.279
5.8
0.45
complies
established
safety
limits
exposure.
Overall,
these
suggest
viable
into
medical
devices,
such
as
doctor's
chest
badge,
enabling
noncontact
interactions
reducing
risk
bacterial
contamination.
Processes,
Journal Year:
2025,
Volume and Issue:
13(4), P. 959 - 959
Published: March 24, 2025
This
study
proposes
a
Residual
Neural
Network
(ResNet)
Convolutional
(CNN)
model
for
predicting
the
resistance
of
colorized
conductive
fabrics
(white,
red,
green,
and
blue)
fabricated
through
Single-Walled
Carbon
Nanotube
dip-coating
process
using
non-contact
image
analysis
approach.
The
Analysis
Variance
(ANOVA)
resulted
in
p-value
2.48426
×
10−8,
confirming
statistically
significant
relationship
between
brightness
fabrics.
Histogram
equalization
preprocessing
was
applied
to
enhance
efficiency
training.
ResNet
achieved
an
RMSE
0.0622
coefficient
determination
0.941585,
demonstrating
approximately
58%
improvement
performance
compared
baseline
CNN.
evaluation
method
proposed
this
opens
new
possibilities
development
wearable
electronic
devices
smart
textiles,
offering
foundational
approach
real-time
monitoring
automated
quality
control
manufacturing.
