Research on Engineering Structures and Materials,
Год журнала:
2023,
Номер
unknown
Опубликована: Янв. 1, 2023
In
this
work,
uniform
and
highly
aligned
ZnO
nanorod
arrays
were
simply
synthesized
on
zinc
plates
by
hydrothermal
method
using
zinc–ammonia
complex
solution.
Effects
of
seed
layer
formation,
Zn(NO3)2
concentration
NH3/Zn(NO3)2
mole
ratio
(R)
in
the
reaction
medium
morphology
crystal
structure
nanorods
investigated
detail.
grown
surfaces
crystalline
had
a
hexagonal
wurtzite
structure,
as
revealed
XRD
analysis.
addition,
dominant
growth
direction
was
c-axis,
indicating
verticality
nanorods.
SEM
images
showed
that
one-dimensional
(1D)
with
high
number
density
seeded
whereas
randomly
oriented
non-seeded
surfaces.
Increase
Zn2+
changed
top
ends
rods
from
tapering
to
ends;
also
led
an
increase
average
size
The
R
value
(or
i.e.,
amount
NH3)
caused
misalign
surface
decrease
size.
well-aligned
can
be
adjusted
50
260
nm
diameter
0.11
6
m
length
changing
parameters,
implying
their
large
potential
used
photocatalytic
electronic
applications.
Biotechnology and Applied Biochemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 19, 2025
ABSTRACT
This
study
was
designed
to
improve
the
sensitivity,
specificity,
and
selectivity
of
electrochemical
method
detecting
Parkinson's
disease
by
identifying
alpha‐synuclein
as
a
biomarker
using
gold
interdigitated
electrodes
(AuIDEs
with
without
surface
modified
zinc
oxide
(ZnO).
AuIDE
were
characterized
scanning
electron
microscope,
3D
profilometers,
high‐power
microscope.
Current–voltage
measurements
performed
for
antigen–antibody
interaction
targeted
detection
Keithley
6482
Picoammeter.
The
linear
range
from
1
fM
pM.
limit
detections
calculated
signal‐to‐noise
ratio
(S/N)
=
3
formula.
Linear
regression
analysis
R
2
0.9779.
0.9809.
Regression
thus
yielded
better
result
in
AuIDE.
For
determination
selectivity,
tau
tested
on
surface‐modified
Tau
used
control
variable.
However,
only
produced
significant
current
change,
while
protein
no
changes.
Hence,
inclusion
ZnO
layer
improved
sensor's
performance
sensor
reproducible
stable
after
repeated
testing.
In
this
paper,
the
indentation
responses
of
a
piezoelectric
semiconductor
(PSC)
half-space
by
an
insulating
and
rigid
spherical
indenter
are
investigated.
It
is
assumed
that
contact
area
between
PSC
frictionless.
Based
on
Hankel
integral
transformation,
considered
problem
reduced
to
pair
dual
equations.
Due
complexity
coupled
governing
differential
equations,
explicit
closed-form
expressions
for
cannot
be
derived
like
counterparts.
Therefore,
equations
converted
into
Fredholm
equation
second
kind,
which
numerically
solved
determine
concerned
responses.
These
include
relationships
force,
electric
potential
change
carrier
concentration
with
depth.
The
numerical
results
show
semiconducting
property
has
significant
influence
characteristics.
addition,
three-dimensional
finite
element
simulations
carried
out
validate
theoretical
computed
singular
method.
turns
two
well
consistent.
distributions
stress
near
simulated
method
reveal
effect
steady
concentration.
obtained
findings
useful
understanding
interaction
piezoelectricity
property.
Piezotronics
and
piezo-phototronics
are
new
emerging
fields
that
have
already
found
applications
in
nanogenerators,
piezoelectric
transistors,
strain
sensors
LEDs.
The
strain-induced
potential
plays
a
crucial
role
modulating
charge-carrier
transport
properties
semiconductor
materials,
especially
for
two-dimensional
(2D)
materials.
In
this
work,
we
theoretically
study
the
piezotronic
effect,
circularly
polarized
light
Zeeman
field's
impact
on
modulation
of
valley
spin
monolayer
(ML)
MoS2
nanoribbon.
We
create
two
ferromagnetic
regions
ML
nanoribbon
to
simultaneously
manipulate
using
externally
applied
strain.
proposed
junction
MoS2,
which
consists
barriers
modulated
by
strain,
field,
an
intriguing
coexistence
perfect
polarization
emerges.
Our
investigation
reveals
among
these
three
effects,
huge
effect
leading
role.
This
paper
considers
the
axisymmetric
frictionless
indentation
responses
of
a
piezoelectric
semiconductor
(PSC)
layer,
which
is
perfectly
bonded
to
rigid
substrate
and
acted
on
by
spherical
indenter.
While
both
indenter
are
assumed
be
electrically
insulating,
interaction
piezoelectricity
semiconducting
property
PSC
fully
taken
into
consideration.
By
Hankel
integral
transformation,
problem
reduced
Fredholm
equation
second
kind,
solved
numerically.
The
variations
force,
electric
potential
contact
radius
with
depth
obtained.
effects
layer
thickness,
size
variation
relationships
analyzed
in
detail
achieve
better
understanding
response
under
indentation.
Furthermore,
theoretical
results
based
singular
method
verified
finite
element
simulation.
Research on Engineering Structures and Materials,
Год журнала:
2023,
Номер
unknown
Опубликована: Янв. 1, 2023
In
this
work,
uniform
and
highly
aligned
ZnO
nanorod
arrays
were
simply
synthesized
on
zinc
plates
by
hydrothermal
method
using
zinc–ammonia
complex
solution.
Effects
of
seed
layer
formation,
Zn(NO3)2
concentration
NH3/Zn(NO3)2
mole
ratio
(R)
in
the
reaction
medium
morphology
crystal
structure
nanorods
investigated
detail.
grown
surfaces
crystalline
had
a
hexagonal
wurtzite
structure,
as
revealed
XRD
analysis.
addition,
dominant
growth
direction
was
c-axis,
indicating
verticality
nanorods.
SEM
images
showed
that
one-dimensional
(1D)
with
high
number
density
seeded
whereas
randomly
oriented
non-seeded
surfaces.
Increase
Zn2+
changed
top
ends
rods
from
tapering
to
ends;
also
led
an
increase
average
size
The
R
value
(or
i.e.,
amount
NH3)
caused
misalign
surface
decrease
size.
well-aligned
can
be
adjusted
50
260
nm
diameter
0.11
6
m
length
changing
parameters,
implying
their
large
potential
used
photocatalytic
electronic
applications.
