IEEE Sensors Letters,
Journal Year:
2023,
Volume and Issue:
7(11), P. 1 - 4
Published: Oct. 11, 2023
Pencil-on-paper
electronics
has
gained
growing
interests
as
cost-effective,
ecofriendly,
flexible,
and
light-weight
devices
for
various
applications.
In
this
letter,
a
flexible
keypad
employing
pencil-on-paper
capacitive
touch
sensors
is
presented.
Spiral-type
interdigitated
are
interconnected
via
steel
threads
well
graphite
paths
to
constitute
ten-button
keypad.
Passivation
of
the
by
means
acrylic
paint
coating
works
protection
against
deterioration
from
bending,
folding,
extended
usage.
Backing
with
silicone
provides
extra
durability.
Sensor
reading
administered
Arduino
boards.
The
same
manufacturing
method
used
scale
up
system
44-button
keyboard.
Functionalities
both
systems
successfully
demonstrated,
effectiveness
passivation
verified.
Sensors and Actuators A Physical,
Journal Year:
2024,
Volume and Issue:
377, P. 115730 - 115730
Published: July 21, 2024
This
review
examines
the
growing
field
of
flexible
and
stretchable
strain
sensors
utilized
in
human
walking
gait
analysis,
focusing
on
determining
knee
bending
angle
muscle
activities
when
a
subject
walks.
Recent
advancements
have
enabled
these
to
accurately
capture
biomechanical
parameters
while
accommodating
body's
natural
movements.
We
examine
principles
underlying
sensors'
design
fabrication
techniques,
emphasizing
their
flexibility,
stretchability,
biocompatibility
for
seamless
integration
into
wearable
systems,
suitable
capturing
movement
lower
limb
aimed
at
analysis.
Through
critical
evaluation
existing
methodologies,
we
assess
reliability
validity
quantifying
parameters.
Furthermore,
discuss
this
technology's
clinical
research
implications,
highlighting
its
potential
personalized
rehabilitation
sports
performance
optimization.
provide
an
overview
application
analyzing
gait,
especially
observing
programs.
First,
present
basic
working
various
sensors.
Second,
by
as
monitoring.
Finally,
current
challenges
future
opportunities
area
are
discussed.
By
synthesizing
knowledge
outlining
directions,
aims
insights
researchers
practitioners
seeking
leverage
comprehensive
International Journal of Chemical Reactor Engineering,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 17, 2025
Abstract
The
exponential
growth
of
electronic
waste
pollution,
including
outdated
electrical
equipment,
is
a
significant
environmental
and
health
concern.
To
protect
the
ecosystem
from
e-waste
contamination,
chemical
engineering
with
its
prominent
processes
such
as
leaching,
pyrolysis,
etc.
can
take
leading
role
in
resource
recovery,
eco-friendly
management,
sustainable
recycling.
This
review
presents
detailed
analysis
recycling
technologies
perspective.
Several
smart
solutions
are
discussed
for
managing
recovering
important
components,
semiconductor
chips,
metals
(Pb,
Al,
Steel,
Ni,
Ag,
Au,
Pd),
rare-earth
minerals,
Various
recovered
by
electro-winning
cell
phones,
integrated
circuits,
be
used
to
produce
corrosion-resistant
appliances,
IoT
(Internet
Things)
devices
like
sensors,
robotics
related
sciences.
paper
concentrates
on
strategies
materials
that
make
equipment
devices,
along
roadblocks
potential
connected
these
strategies.
study
compares
various
procedures
photoelectronic
trash
last
few
years.
also
focuses
green
upcycling
effective
e-trash
management
discarded
keyboards
into
value-added
goods
musical
tools
innovative
artistic
sculptures
seawater.
portrays
pyrometallurgical
valorization
digital
rubbish
printed
circuit
boards
(PCBs),
reactors,
transistors
e-waste-based
nanorobots.
emphasizes
difficulty
growing
amounts
globally
damaging
effects
environment
human
caused
improper
disposal.
physica status solidi (a),
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 23, 2025
Gait
tracking
plays
a
crucial
role
in
postoperative
rehabilitation
training
by
facilitating
the
assessment
of
recovery
progress
and
ensuring
timely
interventions
to
improve
outcomes.
Herein,
flexible
wearable
droplet‐solid‐mode
triboelectric
foot
sensor
(DTFS)
array
is
reported
for
monitoring
training.
The
conventional
solid–solid
contact
interface
replaced
with
solid–liquid
interface,
avoiding
material
wear
degradation
output.
Additionally,
three
interconnected
DTFS
cells
are
integrally
molded
using
3D
printing
technology.
Results
demonstrate
that
DTFS's
output
voltage
amplitude
varies
applied
frequency
acceleration,
providing
reliable
stable
responses
external
stimuli.
When
attached
heel
an
insole,
array,
its
compact
design
configuration,
produces
distinct
electrical
signals
under
different
gaits
enhanced
data
collection
efficiency.
Using
artificial
intelligence
algorithms
analysis,
system
enables
real‐time
automated
gait
high
recognition
accuracy
exceeding
96%.
This
innovative
solution
holds
promise
continuous
tracking,
supports
doctors’
decision‐making
data‐driven
insights,
paves
way
patients’
home
healthcare
through
integration
wireless
transmission
systems
near
future.
Japanese Journal of Applied Physics,
Journal Year:
2025,
Volume and Issue:
64(3), P. 03SP68 - 03SP68
Published: March 1, 2025
Abstract
To
improve
applicability
of
the
stereophonic
lithography
using
paraboloid
mirrors,
utilization
distortion-modified
flat
reticles
was
investigated.
By
illuminating
a
reticle
placed
in
lower
mirror
aperture
obliquely
upward
by
collimated
light,
rough
patterns
with
200–500
μm
widths
were
decently
projected
upper
aperture.
However,
since
pattern
images
very
distorted,
modifications
image
shapes
on
curved
objects
investigated
12
mm
square
lattice
pitch
2
mm.
Distortions
caused
projection
optics
including
illumination
ones
and
surface
curvatures
exposure
modified
revising
positions.
Calculations
distortions
resulting
from
both
causes
enabled,
position
shifts
cross-points
calculated.
Thus,
inversely
distorted
referring
to
size-ratio
differences
repeatedly.
Using
appropriately
reticles,
aimed
successfully
printed
concave
convex
surfaces.
Advanced Healthcare Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 1, 2024
Abstract
Transdermal
healthcare
systems
have
gained
significant
attention
for
their
painless
and
convenient
drug
administration,
as
well
ability
to
detect
biomarkers
promptly.
However,
the
skin
barrier
limits
candidates
of
biomolecules
that
can
be
transported,
reliance
on
simple
diffusion
poses
a
bottleneck
personalized
diagnosis
treatment.
Consequently,
recent
advancements
in
transdermal
transport
technologies
evolved
toward
active
methods
based
external
energy
sources.
Multiple
combinations
these
also
shown
promise
increasing
therapeutic
effectiveness
diagnostic
accuracy
delivery
efficiency
is
maximized.
Furthermore,
wearable
platforms
are
being
developed
diverse
aspects
patient
convenience,
safety,
on‐demand
Herein,
comprehensive
overview
provided,
highlighting
combination‐based
diagnostics,
therapeutics,
theragnostics,
along
with
latest
trends
platform
advancements.
This
offers
insights
into
potential
applications
next‐generation
medical
devices
autonomous
healthcare.
Japanese Journal of Applied Physics,
Journal Year:
2024,
Volume and Issue:
63(3), P. 03SP92 - 03SP92
Published: March 1, 2024
Abstract
The
distortions
of
parabolic
mirror
optics
used
for
stereophonic
projection
lithography
were
investigated.
It
has
already
been
demonstrated
that
resist
patterns
are
replicable
on
gently
curved
surfaces
using
composed
faced
paraboloids
revolution.
However,
it
was
found
replicated
somewhat
distorted
from
the
original
patterns.
caused
by
characteristics
optics.
For
this
reason,
first
calculated
tracing
light
rays.
calculation
procedures
explained
in
detail.
almost
coincide
with
ones
obtained
experiments.
Next,
influences
distributions
image
intensity
and
pattern
widths
maximum
reached
29%
size
at
right-side
corners
a
12
mm
square,
lowered
30%.
printed
200
μ
m
more
than
500
right
side.
This
considered
to
be
unfavorable
applying
method
universally
various
uses.
methods
compensating
or
modifying
investigated,
discussed.
