Advanced Engineering Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 23, 2025
Subwavelength
structures
on
MgAl
2
O
4
hold
significant
technological
importance
in
mid‐infrared
(mid‐IR)
optics,
particularly
for
windows
used
military
mid‐IR
devices
that
must
operate
under
harsh
conditions.
Herein,
a
novel
and
efficient
strategy
utilizing
spatially
shaped
femtosecond
laser
pulse
delay
fabricating
antireflective
surfaces
hard,
difficult‐to‐machine
spinel
with
stable
broadband
transmittance
waves
is
reported.
With
this
method,
new
micro–nanohybrid
structure
composed
of
parabolic
microhole
associated
nanopores
(MHNP)
achieved
by
optimizing
Bessel
since
the
subsequent
can
irradiate
at
different
stages
materials
plasma
diffusion,
thermal
expansion,
phase
transformation.
The
mechanism
more
enhancement
MHNP
explored
finite‐difference
time‐domain
simulation,
indicating
such
localized
field
selective
caused
competition
between
interface
equivalent
refractive
index
effect
light
interference
MHNP.
As
height
nanopore
nears
1
μm
400
nm,
respectively,
resulting
three
periods
increases
3.5–5.5%
2.85–5.5
wavelength,
maximum
reaches
value
94.4%.
Ice
accretion
caused
by
freezing
rain
or
snowstorms
is
a
common
phenomenon
in
cold
climates
that
seriously
threatens
the
safety
and
reliability
of
telecommunication
lines
other
overhead
networks.
Various
anti-icing
strategies
have
been
demonstrated
through
surface
engineering
to
delay
ice
formation.
However,
existing
surfaces
still
encounter
several
challenges;
for
example,
are
prone
ice-pinning
formation
due
impact
supercooled
droplets,
which
leads
loss
effectiveness.
In
this
study,
mushroom-like
cross-scale
(MCS)
with
extreme
pressure
resistance
superior
anti-ice-pinning
property
was
reported.
Specifically,
designed
MCS,
featuring
multiscale
microfeatures,
re-entrant
structure,
heterogeneous
sidewalls,
nanoscale
particles,
exhibits
excellent
properties.
determined
occur
process
involving
liquid
penetration,
condensation,
icing,
frost
filling.
By
establishing
an
anti-ice
-pinning
model
bubble
column
model,
relationship
between
structural
characteristics
performance
clarified.
The
MCS
demonstrates
static
repellency
(contact
angle
>167°)
robust
dynamic
(water
Weber
number
≥300).
Furthermore,
it
ultralow
adhesion
strength
0.46
kPa.
Notably,
remains
below
5
kPa
even
after
15
deicing
cycles.
mechanism
icephobicity
induced
micromorphologies
provide
valuable
insights
effective
prospects
line
areas
field
information
communication
technology.
Applied Physics Letters,
Journal Year:
2024,
Volume and Issue:
125(12)
Published: Sept. 16, 2024
Frost
formation
is
a
normal
phase
transition
phenomenon
in
cold
climates,
while
it
usually
brings
certain
troubles
to
human
lives
and
production.
Therefore,
of
great
significance
develop
frost
resistant
materials
key
technologies.
Here,
salt-philic
superhydrophobic
surface
designed
on
PDMS
substrate
by
femtosecond
laser
direct
writing
technology
combination
with
salt–ethanol–water
mixtures
droplet
treatment.
The
laser-treated
embedded
salt
(LTP-S)
exhibits
superhydrophobicity,
which
alone
property
that
can
resist
the
enables
self-cleaning
effect.
Meanwhile,
coating
further
enhances
resistance
reducing
freezing
point
temperature.
LTP-S
revealed
perform
well
frosting-defrosting
cycles,
washing
resistance,
chemical
corrosion
heating
long-term
air
exposure
tests
as
highly
efficient
stable
anti-frosting
surface.
This
work
demonstrates
facile
strategy
fabricate
for
anti-frosting.
Nanomaterials,
Journal Year:
2025,
Volume and Issue:
15(4), P. 287 - 287
Published: Feb. 13, 2025
A
method
of
femtosecond
laser
multi-pulse
grid-like
point
etching
(MP-GPE)
was
used
to
prepare
glass
fiber
reinforced
plastics
with
superhydrophobic
properties.
This
article
investigates
the
influence
trend
single-pulse
energy
(5-35
μJ)
and
pulse
number
(20-100)
on
morphology
surface
concave
holes,
including
depth
width.
Different
combinations
process
parameters
have
a
modulating
effect
size
hole
structure
ablation
plastics.
At
25
μJ
60
numbers,
holes
increases
maximum
approximately
63
μm,
width
upper
is
33
μm.
Under
these
conditions,
water
contact
angle
160.6°
obtained,
which
consistent
theoretical
calculation
results
161.6°.
very
promising
for
power
industry
use
this
material
in
low-temperature,
drag-reducing
environments.
The Journal of Physical Chemistry Letters,
Journal Year:
2025,
Volume and Issue:
unknown, P. 3654 - 3663
Published: April 4, 2025
Thermal
radiation
management
is
an
important
aspect
of
thermal
engineering
and
plays
a
crucial
role
in
various
industrial
environmental
applications.
However,
either
cooling
or
heating
devices
alone
can
exacerbate
all-season
consumption
during
hot
summers
cold
winters.
We
have
designed
dual-mode
device
that
switch
modes
by
pull-out
method,
with
femtosecond
laser-induced
graphene
(LIG)
on
the
surface
polyimide
membrane
as
SiO2
hollow
microsphere
coating
surface.
Due
to
multi-interface
reflection
between
microspheres
air,
high
reflectivity
(93%)
97%
infrared
emissivity
be
obtained.
Under
solar
irradiation
intensity
75
J/cm2,
temperature
decrease
6.3
°C
realized.
On
other
hand,
LIG
achieve
ultra-ambient
increase
35
due
its
excellent
light
absorption
characteristics
(ε
≈
97%)
conductivity.
Temperature
regulation
achieved
switching
modes,
which
shows
great
promise
agriculture
for
food
goods
preservation.
Also,
this
design
expected
offer
new
approach
energy
efficient
architecture.
