Journal of Physics Conference Series,
Journal Year:
2025,
Volume and Issue:
2994(1), P. 012006 - 012006
Published: April 1, 2025
Abstract
One
of
the
most
common
ways
spreading
infections
is
through
surfaces
that
are
under
highly
frequent
contact
such
as
handles
or
buttons
in
public
places.
An
effective
strategy
to
combat
this
problem
develop
durable
modified
at
micro
and
nano
level
can
hinder
adhesion
dissemination
microbials.
This
paper
presents
a
contactless
reproducible
methodology
for
surface
texturing
copper
by
means
femtosecond
laser
ablation.
The
plates
were
irradiated
(λ
=
800
nm;
τ
70
fs)
with
varying
range
working
parameters
order
parallel
crossed
modifications
comprised
laser-induced
periodic
structures
(LIPSS).
formed
patterns
led
shift
wettability
state
towards
high
hydrophobicity,
while
improved
hydrophilicity.
Furthermore,
reduced
oxide
layer
formation
on
copper.
These
results
would
serve
basis
conducting
further
investigation
potential
antimicrobial
effects
surfaces.
ACS Omega,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 27, 2025
Stainless-steel
grade
316L
is
widely
used
in
medical
and
food
processing
applications
due
to
its
corrosion
resistance
durability.
However,
inherent
lack
of
antibacterial
properties
poses
a
challenge
environments
requiring
high
hygiene
standards.
This
study
investigates
novel
surface
modification
approach
combining
electrochemical
anodization
nonthermal
plasma
treatment
enhance
the
efficacy
SS316L.
The
morphology,
roughness,
chemical
composition,
wettability
modified
surfaces
were
systematically
analyzed
using
Scanning
Electron
Microscopy
(SEM),
Atomic
Force
(AFM),
X-ray
Photoelectron
Spectroscopy
(XPS),
water
contact
angle
(WCA)
measurements.
SEM
revealed
formation
tunable
nanoporous
structures
with
pore
diameters
ranging
from
100
300
nm,
depending
on
applied
anodizing
voltage
(40
60
V).
AFM
measurements
demonstrated
that
roughness
varied
significantly
voltage,
4.3
±
0.4
nm
at
40
V
15.0
0.6
V.
XPS
analysis
confirmed
presence
Cr2O3,
key
oxide
for
resistance,
increased
oxygen
concentration
after
treatment,
indicating
enhanced
oxidation.
Wettability
studies
showed
changed
superhydrophilic,
WCAs
below
5°.
Antibacterial
against
Escherichia
coli
(E.
coli)
Staphylococcus
aureus
(S.
aureus)
was
improved,
plasma-treated
samples
exhibiting
up
92%
reduction
bacterial
adhesion.
These
results
demonstrate
combined
process
effectively
enhances
SS316L,
making
it
promising
strategy
industries.
Drug Development and Industrial Pharmacy,
Journal Year:
2025,
Volume and Issue:
unknown, P. 1 - 14
Published: April 1, 2025
Copper
sulfide
nanoparticles
(CuS
NPs)
are
promising
materials
for
a
variety
of
biomedical
applications,
particularly
as
antimicrobial
and
antioxidant
agents.
The
main
objective
this
study
was
to
synthesize
CuS
NPs
evaluate
their
efficiency
an
antibacterial
agent.
were
prepared
in
single
step
process
using
L-ascorbic
acid
the
stabilizing
Systematic
structural
morphological
characterization
performed
standard
techniques
X-ray
diffraction
(XRD),
Fourier-transform
infrared
(FT-IR)
spectroscopy,
scanning
(SEM)
transmission
electron
microscopy
(TEM).
Further,
agar
well
disk-diffusion
method
applied
determination
sensitivity
minimum
inhibitory
concentration
(MIC)
against
multiple
pathogenic
bacterial
strains.
potential
evaluated
by
performing
total
reduction
capability,
nitric
oxide
(NO)
2,2-diphenyl-1-picrylhydrazyl
(DPPH)
free
radical
scavenging
activities
at
doses,
with
L-ascorbate
reference.
results
indicated
amorphous
nature
size
range
8.17
9.63
nm.
FI-IR
confirmed
presence
several
bioactive
functional
groups
required
copper
ions.
Additionally,
our
showed
robust
species
such
Escherichia
coli
Staphylococcus
aureus)
diffusion
assays,
zone
inhibition
values
ranging
between
21
23
mm.
also
potent
dose-dependent
activity.
cost-
time-efficient
manner
have
excellent
properties
be
different
applications.
Journal of Physics Conference Series,
Journal Year:
2025,
Volume and Issue:
2994(1), P. 012006 - 012006
Published: April 1, 2025
Abstract
One
of
the
most
common
ways
spreading
infections
is
through
surfaces
that
are
under
highly
frequent
contact
such
as
handles
or
buttons
in
public
places.
An
effective
strategy
to
combat
this
problem
develop
durable
modified
at
micro
and
nano
level
can
hinder
adhesion
dissemination
microbials.
This
paper
presents
a
contactless
reproducible
methodology
for
surface
texturing
copper
by
means
femtosecond
laser
ablation.
The
plates
were
irradiated
(λ
=
800
nm;
τ
70
fs)
with
varying
range
working
parameters
order
parallel
crossed
modifications
comprised
laser-induced
periodic
structures
(LIPSS).
formed
patterns
led
shift
wettability
state
towards
high
hydrophobicity,
while
improved
hydrophilicity.
Furthermore,
reduced
oxide
layer
formation
on
copper.
These
results
would
serve
basis
conducting
further
investigation
potential
antimicrobial
effects
surfaces.
