The
magnetic-luminescent
bifunctional
nanospheres
NH2-Fe3O4/HMDA[Eu(DBM)4]
were
prepared
by
coating
the
amino-functionalized
Fe3O4
with
HMDA[Eu(DBM)4].
X-ray
diffraction,
scanning
electron
microscopy,
and
Fourier
transform
infrared
spectroscopy
of
characterized.
Molecular
simulations
adsorption
configurations
performed.
photoluminescence
magnetic
properties
investigated.
Magnetic
particle
inspection
utilizing
was
carried
out
to
detect
cracks
on
coupling
surface.
field
at
defects
component
under
simulated
analyzed.
Furthermore,
analyses
performed
examine
distribution
an
applied
field.
show
great
promise
for
widespread
application
in
due
their
high
visibility
ultraviolet
light
controllability
presence
fields.
Nanomaterials,
Journal Year:
2024,
Volume and Issue:
14(2), P. 222 - 222
Published: Jan. 19, 2024
Magnetic
fluids
were
historically
the
first
active
nano-dispersion
material.
Despite
over
half
a
century
of
research,
interest
in
these
nano-objects
continues
to
grow
every
year.
This
is
due
impressive
development
nanotechnology,
synthesis
nanoscale
structures,
and
surface-active
systems.
The
unique
combination
fluidity
magnetic
response
allows
be
used
engineering
devices
biomedical
applications.
In
this
review,
experimental
results
fundamental
theoretical
approaches
are
systematized
predict
micro-
macroscopic
behavior
fluid
systems
under
different
external
influences.
article
serves
as
working
material
for
both
experienced
scientists
field
novice
specialists
who
just
beginning
investigate
topic.
Journal of Composites Science,
Journal Year:
2025,
Volume and Issue:
9(5), P. 219 - 219
Published: April 29, 2025
This
study
presents
the
fabrication
and
characterization
of
hybrid
magneto-responsive
composites
(hMRCs),
composed
recyclable
components:
magnetite
microparticles
(MMPs)
as
fillers,
lard
a
natural
binding
matrix,
cotton
fabric
for
structural
reinforcement.
MMPs
are
obtained
by
in-house
plasma-synthesis,
sustainable,
efficient,
highly
tunable
method
producing
high-performance
MMPs.
hMRCs
integrated
into
flat
capacitors,
their
electrical
capacitance
(C),
resistance
(R),
dielectric
permittivity
(ϵ′),
conductivity
(σ)
investigated
under
static
magnetic
field,
uniform
force
an
alternating
electric
field.
The
experimental
results
reveal
that
properties
dependent
on
volume
fractions
microfibers
in
fabric,
well
applied
flux
density
(B)
compression
forces
(F).
C
shows
increase
with
both
B
F,
while
R
decreases
due
to
improved
conductive
pathways
formed
alignment
σ
is
found
be
tunable,
increases
up
300%
combined
field
effects.
In
same
conditions,
75%,
80%.
Thus,
employing
plasma-synthesized
MMPs,
commercially
available
fabrics,
this
demonstrates
eco-friendly,
low-cost
approach
designing
multifunctional
smart
materials.
open
new
possibilities
adaptive
sensors,
energy
storage
devices,
magnetoelectric
transducers.
Materials,
Journal Year:
2024,
Volume and Issue:
17(12), P. 2838 - 2838
Published: June 11, 2024
In
this
study,
we
synthesized
Fe3O4
nanoparticles
(Fe3O4
NPs)
of
varying
sizes
and
morphologies
using
the
solvothermal
method
incorporated
them
as
additives
into
carbonyl
iron
magnetorheological
fluids
(CI-MRFs).
We
tested
shear
stress,
yield
viscosity
storage
modulus
MRFs
a
magnetorheometer
to
investigate
how
size
morphology
NPs
influence
performance
MRFs.
Our
results
indicate
that
additive
significantly
enhances
MR
properties
more
than
their
morphological
attributes.
This
enhancement
from
optimizing
stabilizing
CI
magnetic
chain
structure
in
presence
field.
Specifically,
with
averaging
250
nm
exhibit
higher
stress
show
increased
resistance
strains.
Although
nanoparticle
has
modest
effect
on
rheological
MRFs,
hexahedral
octahedral
particles
can
enhance
through
internal
friction
compared
spherical
particles.
Additionally,
different
improve
sedimentation
stability
those
around
being
particularly
effective
at
slowing
down
sedimentation.
Both
slow
effectively
NPs.
paper
investigates
CI-MRFs
by
controlling
particle
features,
providing
research
foundation
for
design
optimization
Smart Materials and Structures,
Journal Year:
2024,
Volume and Issue:
33(6), P. 065018 - 065018
Published: May 2, 2024
Abstract
Poly(
N
-methylaniline)
(PNMA)
coated
magnetite
(Fe
3
O
4
)
(PNMA@Fe
composite
particles
synthesized
through
both
chemical
oxidative
polymerization
and
co-precipitation
processes
were
used
as
a
magnetic
additive
for
carbonyl
iron
(CI)-based
magnetorheological
(MR)
fluid.
The
effect
of
the
additive’s
content
on
rheological
characteristics
MR
fluid
in
presence
an
externally
applied
field
was
studied
along
with
its
sedimentation
ratio
compared
that
CI-based
Shear
stress
curves
function
shear
rate
fluids
found
to
be
well-fitted
by
Herschel–Bulkley
equation
slope
dynamic
yield
determined
2.0.
also
showed
stresses
higher
than
those
different
strengths.
Specifically,
1.0
wt%
highest
best
solid-like
properties
among
tested
samples.
Furthermore,
issue
improve
significantly,
especially
lowest
settling
additive.
addition
PNMA@Fe
resulted
exhibiting
properties,
owing
improved
features
reduced
rate.
Research Square (Research Square),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 3, 2024
Abstract
Magnetic
particle
inspection,
a
widely
used
nondestructive
testing
method,
is
employed
to
detect
surface
defects
in
ferromagnetic
materials
due
its
ease
of
operation,
low
cost,
and
high
efficiency.
In
this
study,
Fe3O4
hollow
nanospheres
were
synthesized
by
solvothermal
method.
Lemon
yellow
(LY)
pigments
successfully
encapsulated
on
the
these
magnetic
using
E51
epoxy
resin.
The
Fe3O4/E51/LY
composite
material
was
characterized
terms
microscopic
morphology,
physical
phase,
structural
properties.
adsorption
mechanism
fluorescent
analyzed.
Additionally,
photoluminescence
properties
tested
evaluated.
A
inspection
test
bench
then
established
workpiece.
exhibited
saturation
magnetization
53.22
emu/g
emitted
yellow-green
fluorescence
at
525
nm
under
ultraviolet
light.
workpiece
accurately
detected
particles.
Journal of Intelligent Material Systems and Structures,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 10, 2024
Aiming
at
the
limitations
of
magnetorheological
fluid
(MRF)
settlement
monitoring
in
transparent
non-metallic
containers,
a
method
MRF
concentration
measurement
based
on
wire
wound
inductor
is
proposed
this
paper,
and
with
sensing
method,
in-situ
sedimentation
inside
damper
fulfilled.
The
varying
local
will
lead
to
inductance
change
inductor,
which
immersed
specific
position,
settling
process.
When
harmonically
excited
signal
generator,
relationship
between
output
amplitude
across
can
be
established.
To
reveal
speed
dependence,
carried
out
different
concentrations
viscosities.
It
testified
that
measure
effectively,
qualified
real
damper.
