Electrochimica Acta,
Journal Year:
2023,
Volume and Issue:
461, P. 142600 - 142600
Published: May 18, 2023
In
this
work,
electrodes
based
on
laser-scribed
reduced
graphene
oxide
were
fabricated
using
filter
paper
as
the
substrate.
To
fabricate
electrodes,
a
water
suspension
of
was
filtered
to
produce
continuous
and
uniform
film
surface.
Subsequently,
CO2
laser
used
"write"
working,
counter
reference
eelctroes
by
reducing
in
specific
areas
define
complete
sensors.
Referecnce
then
coated
with
commercial
Ag/AgCl
conductive
paste
quasi
reference.
As
devices
employed
electrochemical
sensors
for
detection
phosphate
ions
employing
molybdenum
blue
method.
This
method
exploits
reaction
between
molybdate
acidic
media
leading
Keggin-type
complex
(PMo12O403−)
which,
being
electrochemically
active,
enables
indiret
ions.
Sensors
exhibited
high
selectivity
sensitive
wide
linear
range,
from
1
20
µM;
limit
0.4
µM.
demonstrate
that
could
be
utilized
in-situ
ion
detection,
substrate
first
pre-loaded
sulphuric
acid
During
analysis,
these
chemicals
desorbed
directly
into
test
sample
eliminating
need
any
kind
external
manipulation
or
reagent
addition.
Thus,
presents
fabrication
portable,
easy-to-use,
biodegradable
fast
sensor
situ
real-time
monitoring
quality.
ACS Nano,
Journal Year:
2022,
Volume and Issue:
16(12), P. 20633 - 20646
Published: Nov. 16, 2022
Laser-induced
graphene
(LIG)
has
gained
preponderance
in
recent
years,
as
a
very
attractive
material
for
the
fabrication
and
patterning
of
graphitic
structures
electrodes,
multiple
applications
electronics.
Typically,
polymeric
substrates,
such
polyimide,
have
been
used
precursor
materials,
but
other
organic,
more
sustainable,
accessible
materials
emerged
viable
alternatives,
including
cellulose
substrates.
However,
these
substrates
lacked
conductive
chemical
properties
achieved
by
conventional
LIG
not
translated
into
fully
flexible,
wearable
scenarios.
In
this
work,
we
expand
paper-based
LIG,
boosting
graphitization
potential
paper,
through
introduction
external
aromatic
moieties
meticulous
control
laser
fluence.
Colored
wax
printing
over
paper
introduces
structures,
allowing
synthesis
with
sheet
resistances
low
5
Ω·sq–1,
translating
to
an
apparent
conductivity
high
28.2
S·cm–1.
Regarding
properties,
ID/IG
ratios
0.28
showcase
defect
densities
improve
on
previous
reports
where
resistance
limited
values
around
30
dense
less
crystalline
structures.
With
improved
simple
transfer
methodology
was
developed,
based
water-induced
peel-off
process
that
efficiently
separates
patterned
from
native
conformable,
flexible
harnessing
multifunctional
capabilities
toward
Proof-of
concept
electrodes
electrochemical
sensors,
strain
in-plane
microsupercapacitors
were
patterned,
transferred,
characterized,
using
high-value
multiples
scenarios
technologies,
sustainability
accessibility
applications.
Materials Horizons,
Journal Year:
2023,
Volume and Issue:
10(10), P. 4163 - 4171
Published: Jan. 1, 2023
Sweat
pH
is
an
important
indicator
for
diagnosing
disease
states,
such
as
cystic
fibrosis.
However,
conventional
sensors
are
composed
of
large
brittle
mechanical
parts
and
need
additional
instruments
to
read
signals.
These
have
limitations
practical
wearable
applications.
In
this
study,
we
propose
colorimetric
sweat
based
on
curcumin
thermoplastic-polyurethane
(C-TPU)
electrospun-fibers
diagnose
states
by
monitoring.
This
sensor
aids
in
monitoring
changing
color
response
chemical
structure
variation
from
enol
di-keto
form
via
H-atom
separation.
Its
changes
the
visible
due
light
absorbance
reflectance
changes.
Furthermore,
it
can
rapidly
sensitively
detect
its
superior
permeability
wettability.
By
O2
plasma
activation
thermal
pressing,
be
easily
attached
various
fabric
substrates
swaddling
patient
clothing
surface
modification
interlocking
C-TPU.
diagnosable
durable
reusable
enough
neutral
washing
conditions
reversible
sensing
performance
restoring
curcumin.
study
contributes
development
smart
diagnostic
fibrosis
patients
who
require
continuous
Biosensors,
Journal Year:
2023,
Volume and Issue:
13(2), P. 211 - 211
Published: Jan. 31, 2023
Catecholamines,
including
dopamine,
epinephrine,
and
norepinephrine,
are
considered
one
of
the
most
crucial
subgroups
neurotransmitters
in
central
nervous
system
(CNS),
which
they
act
at
brain’s
highest
levels
mental
function
play
key
roles
neurological
disorders.
Accordingly,
analysis
such
catecholamines
biological
samples
has
shown
a
great
interest
clinical
pharmaceutical
importance
toward
early
diagnosis
diseases
as
Epilepsy,
Parkinson,
Alzheimer
diseases.
As
promising
routes
for
real-time
monitoring
catecholamine
neurotransmitters,
optical
electrochemical
biosensors
have
been
widely
adopted
perceived
dramatically
accelerating
development
last
decade.
Therefore,
this
review
aims
to
provide
comprehensive
overview
on
recent
advances
main
challenges
biosensors.
Particular
emphasis
is
given
biosensors,
reviewing
their
sensing
mechanism
unique
characteristics
brought
by
emergence
nanotechnology.
Based
specific
biosensors’
performance
metrics,
multiple
perspectives
therapeutic
use
nanomaterial
future
trends
also
summarized.
Nanomaterials,
Journal Year:
2023,
Volume and Issue:
13(5), P. 788 - 788
Published: Feb. 21, 2023
Laser-induced
graphene
(LIG)
is
a
graphenic
material
synthesized
from
polymeric
substrate
through
point-by-point
laser
pyrolysis.
It
fast
and
cost-effective
technique,
it
ideal
for
flexible
electronics
energy
storage
devices,
such
as
supercapacitors.
However,
the
miniaturization
of
thicknesses
which
important
these
applications,
has
still
not
been
fully
explored.
Therefore,
this
work
presents
an
optimized
set
conditions
to
fabricate
high-quality
LIG
microsupercapacitors
(MSC)
60
µm
thick
polyimide
substrates.
This
achieved
by
correlating
their
structural
morphology,
quality,
electrochemical
performance.
The
fabricated
devices
show
high
capacitance
22.2
mF/cm2
at
0.05
mA/cm2,
well
power
densities
comparable
those
similar
that
are
hybridized
with
pseudocapacitive
elements.
performed
characterization
confirms
composed
multilayer
nanoflakes
good
continuity
optimal
porosity.
RSC Advances,
Journal Year:
2024,
Volume and Issue:
14(2), P. 1034 - 1050
Published: Jan. 1, 2024
In
this
work,
a
portable
electrochemical
glucose
sensor
was
studied
based
on
laser-induced
graphene
(LIG)
composite
electrode.
A
flexible
electrode
prepared
using
LIG
technology.
Poly(3,4-ethylene
dioxythiophene)
(PEDOT)
and
gold
nanoparticles
(Au
NPs)
were
deposited
the
surface
by
potentiostatic
deposition
to
obtain
with
good
conductivity
stability.
Glucose
oxidase
(GOx)
then
immobilized
glutaraldehyde
(GA)
create
an
LIG/PEDOT/Au/GOx
micro-sensing
interface.
The
concentration
of
solution
is
directly
related
current
value
chronoamperometry.
Results
show
that
can
detect
solutions
within
range
0.5
×
10-5
2.5
10-3
mol
L-1.
modified
provides
resulting
excellent
sensitivity
341.67
μA
mM-1
cm-2
ultra-low
limit
detection
(S/N
=
3)
0.2
exhibits
high
sensitivity,
stability,
selectivity,
making
it
suitable
for
analyzing
biological
fluid
samples.
user-friendly,
be
built
into
biosensor
device
through
smartphone
detection.
Thus,
developed
has
potential
applied
in
point-of-care
platforms
such
as
environmental
monitoring,
public
health,
food
safety.
Small,
Journal Year:
2024,
Volume and Issue:
20(31)
Published: April 8, 2024
Choline
is
an
essential
micronutrient
for
infants'
brain
development
and
health.
To
ensure
that
infants
receive
the
needed
daily
dose
of
choline,
U.S.
Food
Drug
Administration
(FDA)
has
set
requirements
choline
levels
in
commercialized
infant
formulas.
Unfortunately,
not
all
families
can
access
well-regulated
formulas,
leading
to
potential
inadequacies
intake.
Economic
constraints
or
difficulties
obtaining
exacerbated
by
situations
like
COVID-19,
prompt
stretch
Accurate
measurement
formulas
becomes
imperative
guarantee
necessary
nutritional
support.
Yet,
accessible
tools
this
purpose
are
lacking.
An
innovative
integrated
sensor
periodic
observation
(SPOOC)
designed
at-home
quantification
milk
powders
reported.
This
system
composed
a
potentiometric
ionic-liquid
reference
electrode
developed
on
laser-induced
graphene
(LIG)
into
spoon-like
device.
SPOOC
includes
micro-potentiometer
conducts
measurements
transmits
results
wirelessly
parents'
mobile
devices.
demonstrated
rapid
accurate
assessment
directly
pre-consuming
without
any
sample
treatment.
work
empowers
parents
with
user-friendly
tool
monitoring
promoting
informed
decision-making
care
infants.
Advanced Materials Interfaces,
Journal Year:
2024,
Volume and Issue:
11(19)
Published: April 9, 2024
Abstract
Laser‐induced
graphene
(LIG)
is
a
promising
technology
enabling
cost‐effective,
scalable,
and
high
surface
area
3D‐porous
electrodes
for
electrochemical
applications.
Nitrate
in
water
bodies
harmful
contaminant
to
humans
the
ecosystems.
Its
detection
by
sensors
challenging
due
interference
from
nitrite.
Herein,
first
time,
LIG‐based
sensor
modified
with
electrodeposited
silver
dendrites
(EdAg/LIG)
without
using
surfactants
proposed
of
nitrate
tunable
selectivity
sensitivity.
The
electrode
extensively
characterized
spectroscopic
methods
underlying
mechanism
formation
substantiated.
developed
EdAg
dendrites/LIG
shows
excellent
sensing
properties
at
pH
2.
nitrite
acidic
media
eliminated
implementing
novel
strategy
shift
working
7.
achieved
both
values
surpass
other
limit
0.46
2
5.53
µ
m
also
good
recovery
characteristics
mineral,
tap,
groundwater
across
wide
range
concentrations
demonstrates
stability
under
temperature
fluctuations
deformations.
ACS Sensors,
Journal Year:
2024,
Volume and Issue:
9(9), P. 4536 - 4554
Published: Sept. 16, 2024
Laser-induced
graphene
(LIG)
and
Laser-scribed
(LSG)
are
both
advanced
materials
with
significant
potential
in
various
applications,
particularly
the
field
of
sustainable
sensors.
The
practical
uses
LIG
(LSG),
which
include
gas
detection,
biological
process
monitoring,
strain
assessment,
environmental
variable
tracking,
thoroughly
examined
this
review
paper.
Its
tunable
characteristics
distinguish
is
developed
from
accurate
laser
beam
modulation
on
polymeric
substrates,
they
essential
advancing
sensing
technologies
many
applications.
recent
advances
applications
energy
storage,
biosensing,
electronics
by
steadily
efficiency
versatility.
remarkable
flexibility
its
transformative
regard
to
sensor
manufacturing
utilization
highlighted
manuscript.
Moreover,
it
examines
fabrication
methods
used
production,
highlighting
precision
adaptability.
This
navigates
difficulties
that
encountered
implementing
sensors
looks
ahead
future
developments
will
propel
industry
forward.
paper
provides
a
comprehensive
summary
latest
research
elucidates
innovative
material's
elements.
