Biomimetics,
Journal Year:
2024,
Volume and Issue:
9(9), P. 573 - 573
Published: Sept. 22, 2024
The
erosion
phenomena
of
the
natural
stone
in
cultural
heritage
are
induced
by
various
sources.
Consequently,
development
multifunctional
protective
materials
that
combine
two
or
more
useful
properties
is
an
effective
strategy
addressing
synergistic
effects
mechanisms.
A
coating,
consisting
a
silane-based
precursor
and
zinc
oxide
(ZnO)
nanoparticles
(NPs),
produced
tested
for
protection
limestone.
hybrid
coating
combines
following
three
properties:
superhydrophobicity,
including
water-repellency,
photocatalytic
self-cleaning
biocidal
activity.
relative
concentration
NPs
(0.8%
w/w),
used
suggested
composite
carefully
selected
according
to
wetting
studies,
colourimetric
measurements
durability
(tape
peeling)
tests.
non-wetting
state
evidenced
on
surface
large
contact
angle
water
drops
(≈153°)
small
hysteresis
(≈5°),
which
gives
rise
physical
scenario
(lotus
effect).
chemical
shown
with
removal
methylene
blue,
UV-A
radiation.
Moreover,
it
hinders
incubation
E.
coli
S.
aureus,
as
inhibitions
94.8
99.9%,
respectively.
Finally,
preliminary
studies
reveal
stability
coating.
Coatings,
Journal Year:
2025,
Volume and Issue:
15(2), P. 140 - 140
Published: Jan. 25, 2025
The
low
adhesion
of
water
drops
on
superhydrophobic
surfaces
is
a
prerequisite
for
their
widespread
potential
industrial
applications.
wetting
transition
between
different
states
significantly
influences
the
dynamic
behavior
solid
surfaces.
Although
some
theoretical
studies
have
addressed
transitions,
underlying
mechanisms
by
which
local
micro-
and
nanostructure
parameters
affect
not
been
fully
elucidated.
This
study
investigates
three-dimensional
micropillared
micro/nanopillared
surfaces,
deriving
thermodynamically
equation
free
energy
barrier
transition,
influenced
overall
roughness
entire
surface
its
micro/nanostructures.
Theoretical
calculations
are
performed
to
investigate
effects
various
transition.
Based
principle
minimization
calculated
barrier,
possible
analyzed
compared
with
experimental
results.
contributes
understanding
transitions
may
guide
design
diverse
Materials,
Journal Year:
2024,
Volume and Issue:
17(17), P. 4322 - 4322
Published: Aug. 31, 2024
The
effect
of
extreme
water
repellency,
called
the
lotus
effect,
is
caused
by
formation
a
Cassie–Baxter
state
in
which
only
small
portion
wetting
liquid
droplet
contact
with
surface.
rest
bottom
air
pockets.
Instrumental
methods
are
often
used
to
determine
textural
features
that
cause
this
effect—scanning
electron
and
atomic
force
microscopies,
profilometry,
etc.
However,
result
provides
an
accurate
texture
model,
not
actual
information
about
part
surface
wetted
liquid.
Here,
we
show
practical
method
for
estimating
fraction
has
state.
performed
using
set
ethanol–water
mixtures
angle
textured
chemically
equivalent
flat
surfaces
AlSI
304
steel,
7500
aluminum,
siloxane
elastomer.
We
showed
system
equations
can
be
solved
graphically
diagrams
introduced
paper,
returning
value
anticipate
demonstrated
will
useful
direct
evaluation
ability
textures
repel
liquids,
particularly
superhydrophobic
superoleophobic
materials,
slippery
liquid-infused
porous
surfaces,
