Droplet
transport
is
very
essential
in
many
industrial
applications.
This
article
proposed
the
concept
of
employing
dual
synthetic
jets
conjunction
with
superhydrophobic
materials
to
facilitate
long-distance
directional
water
droplets.
Experiments
showed
that
droplet
speed
could
reach
approximately
90
mm/s.
In
addition
linear
transport,
were
also
capable
achieving
curved
droplets
on
surfaces.
High-speed
photography
captured
details
process.
Additionally,
simulations
analyzed
droplet's
aerodynamic
forces
and
deformation
breakup
mechanisms
at
actuator's
outlet.
The
research
this
paper
was
anticipated
contribute
new
methods
for
directed
It
eliminated
need
pre-processing
surface
create
a
path,
there
no
incorporate
conductive
or
magnetic
substances
within
Applied Physics Letters,
Год журнала:
2024,
Номер
124(17)
Опубликована: Апрель 22, 2024
Marine
oil
spills
have
become
a
major
global
environmental
challenge,
yet
there
remains
lack
of
effective
and
environmentally
friendly
strategies
for
the
remediation
water
contaminated
with
high-viscosity
oil.
In
this
study,
we
introduce
superhydrophobic
oleophilic
material
photothermal
properties
efficient
absorption
viscous
Femtosecond
laser
treatment
methodology
is
applied
to
cork
(FSLA-cork),
which
exhibits
not
only
superior
hydrophobic
but
also
exceptional
ability
be
rapidly
heated
from
ambient
conditions
58
°C
in
10
s
under
1.8
solar
irradiation.
Under
irradiance,
FSLA-cork
adsorbent
functions
synergistically
by
capillary
centrifugal
pumping.
At
one-sun
intensity,
an
rate
4.02
g
cm−2
within
200
was
observed.
The
high
adsorption
rates
combined
availability
raw
its
eco-friendly
fabrication
methods
indicate
that
such
materials
can
utilized
large-scale
clean
up
aqueous
environments
oils.
Applied Physics Letters,
Год журнала:
2024,
Номер
124(16)
Опубликована: Апрель 15, 2024
Modulating
the
thermal
emission
of
a
material
in
infrared
(IR)
range
can
be
essential
for
various
practical
applications
such
as
smart
textiles,
camouflage,
and
anti-counterfeiting.
Although
many
different
materials
or
structures
have
been
proposed,
complex
manufacturing
processes
are
still
hindering
their
widespread
use.
Herein,
facile
femtosecond
laser
processing
technology
drop-coating
method
introduced
to
form
patternable
low
emissivity
film.
Laser-treated
polyimide
films
resulted
superhydrophilic
structured
surfaces
that
uniformly
coated
with
silver-nanowires
(AgNWs)
aqueous
solutions
surfaces.
Furthermore,
samples
is
∼0.2
without
deterioration
over
800
bending-releasing
cycles.
The
as-prepared
also
display
good
camouflage
properties,
namely,
reduced
radiation
temperature
an
object
by
35.8
°C
when
was
∼69.1
°C.
Additionally,
this
IR
effect
AgNWs
shows
excellent
stability
even
harsh
environments
immersion
water,
acid,
alkali,
salt
solution
applied
voltage.
We
show
information
encryption
possible
adjusting
amount
AgNWs.
design
programmable
patterned
film
indicates
idea
anti-counterfeiting
technology,
which
carry
more
abundant
application
scenario
disguise
them
sophisticated.
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Фев. 16, 2024
Abstract
Despite
their
notable
unidirectional
water
transport
capabilities,
Janus
membranes
are
commonly
challenged
by
the
fragility
of
chemical
coatings
and
clogging
open
microchannels.
Here,
an
on-demand
mode-switching
strategy
is
presented
to
consider
functionality
mechanical
durability
separately
implement
them
simply
stretching
releasing
membrane.
The
mode
facilitates
liquid
flow
through
hydrophilic
micropores-microgrooves
channels
(PG
channels)
fabricated
femtosecond
laser.
protection
designed
for
in-situ
closure
PG
upon
encountering
external
abrasion
impact.
imparts
membrane
robustness
reserve
penetration
under
harsh
conditions,
such
as
2000
cycles
abrasion,
10
days
exposure
in
air
other
rigorous
tests
(sandpaper
finger
rubbing,
sand
impact
tape
peeling).
underlying
mechanism
gridded
grooves
protecting
enhancing
unveiled.
serves
a
fog
collector
demonstrate
its
unwavering
real-world
conditions.
design
could
up
new
possibilities
multitude
applications
ranging
from
multiphase
separation
devices
harvesting
wearable
health-monitoring
patches.
Colloids and Interface Science Communications,
Год журнала:
2024,
Номер
59, С. 100770 - 100770
Опубликована: Фев. 7, 2024
With
the
ongoing
advancement
of
processing
technology,
one
hottest
subjects
is
manufacturing
materials
with
distinctive
surface
micro/nanostructures.
Among
these,
femtosecond
laser
has
been
widely
adopted
as
a
high-precision
and
high-efficiency
fabricating
technology.
When
compared
to
other
traditional
methods,
some
advantages
in
controllable
micro/nanostructures
can
fabricate
wide
range
structures,
including
periodic
microporous
array
structure,
three-dimensional
composite
so
on.
They
have
many
applications,
optical
anti-counterfeiting,
anti-reflection,
superhydrophobic
superhydrophilic
properties,
This
article
reviews
simplified
mechanism
material,
typical
fabricated
by
laser,
applications
laser-fabricated
It
proves
technical
prospect
application
potential
fabrication
ACS Nano,
Год журнала:
2024,
Номер
18(8), С. 6359 - 6372
Опубликована: Фев. 16, 2024
On-demand
droplet
transportation
is
of
great
significance
for
numerous
applications.
Although
various
strategies
have
been
developed
transportation,
out-of-surface
three-dimensional
(3D)
droplets
remains
challenging.
Here,
a
versatile
strategy
based
on
magnetic-actuated
jumping
(MAJ)
superhydrophobic
grooved
surfaces
(SHGSs)
presented,
which
enables
3D,
remote,
and
precise
manipulation
even
in
enclosed
narrow
spaces.
To
trigger
MAJ,
an
electromagnetic
field
utilized
to
deform
the
SHGS
with
aid
attached
magnetic
particle,
thereby
acquires
excess
surface
energy.
When
quickly
removed,
energy
partly
converted
into
kinetic
energy,
allowing
jump
atop
surface.
Through
high-speed
imaging
numerical
simulation,
working
mechanism
size
matching
effect
MAJ
are
unveiled.
It
found
that
behavior
can
only
be
observed
if
sizes
grooves
matched,
otherwise
unwanted
entrapment
or
pinch-off
effects
would
lead
failure
MAJ.
A
regime
diagram
serves
as
guideline
design
SHGSs
proposed.
The
capacities
including
in-surface
directional
climbing
stairs,
crossing
obstacles,
also
demonstrated.
With
ability
remotely
manipulate
spaces
without
using
any
mechanical
moving
parts,
used
miniaturized
fluidic
platforms,
exhibit
potential
applications
bioassays,
microfluidics,
droplet-based
switches,
microreactions.
Abstract
Droplets
and
bubbles
have
a
wide
range
of
applications
in
industry,
agriculture,
daily
life,
their
controllable
manipulation
is
significant
scientific
technological
importance.
Versatile
magnetically
responsive
strategies
been
developed
to
achieve
precise
control
over
droplets
bubbles.
To
manipulate
nonmagnetic
or
with
magnetic
fields,
the
presence
medium
indispensable.
Magnetic
additives
can
be
added
surface
interior
bubbles,
allowing
for
on‐demand
by
direct
actuation.
Alternatively,
elastomer
substrates
used
actuate
controlling
deformation
microstructures
on
through
stimulation.
Another
strategy
based
untethered
devices,
which
enables
free
mobility,
facilitating
versatile
flexible
manner.
This
paper
reviews
advances
from
perspective
An
overview
different
classes
medium,
along
respective
corresponding
droplet/bubble
methods
principles,
first
introduced.
Then,
biomedicine,
microchemistry,
other
fields
are
presented.
Finally,
remaining
challenges
future
opportunities
related
regulating
behavior
using
discussed.
International Journal of Extreme Manufacturing,
Год журнала:
2024,
Номер
6(4), С. 045503 - 045503
Опубликована: Апрель 18, 2024
Abstract
Over
the
past
two
decades,
superhydrophobic
surfaces
that
are
easily
created
have
aroused
considerable
attention
for
their
superior
performances
in
various
applications
at
room
temperature.
Nowadays,
there
is
a
growing
demand
special
fields
development
of
can
resist
wetting
by
high-temperature
molten
droplets
(>1200
°C)
using
facile
design
and
fabrication
strategies.
Herein,
bioinspired
directional
structures
(BDSs)
were
prepared
on
Y
2
O
3
-stabilized
ZrO
(YSZ)
femtosecond
laser
ablation.
Benefiting
from
anisotropic
energy
barriers,
BDSs
featured
with
no
additional
modifiers
showed
remarkable
increase
9.2°
to
60°
contact
angle
CaO–MgO–Al
–SiO
(CMAS)
melt
70.1%
reduction
spreading
area
CMAS
1250
°C,
compared
polished
super-CMAS-melt-philic
YSZ
surfaces.
Moreover,
demonstrated
exceptional
inhibition
even
1
400
an
3.3°
31.3°
67.9%
decrease
area.
This
work
provides
valuable
insight
preparation
strategy
effectively
inhibiting
super-melt-philic
extremely
high
temperatures.
We
propose
a
novel
contactless
droplet
manipulation
strategy
that
combines
electrostatic
tweezers
(ESTs)
with
lubricated
slippery
surfaces.
Electrostatic
induction
causes
the
to
experience
an
force,
allowing
it
move
horizontal
shift
of
EST.
Because
both
EST
and
operating
platform
prepared
by
femtosecond
laser
exhibit
strong
binding
effect
on
droplets,
features
significant
flexibility,
high
precision,
can
work
under
various
conditions.
The
manipulate
droplets
wide
volume
range
(500
nL-1
mL),
hanging
tilted
or
even
inverted
surfaces,
multiple
in
parallel,
corrosive
low-surface-tension
organic
(e.g.,
ethanol),
sealed
space
from
outside.
operation
method
is
suitable
for
substrates
processing
also
be
used
small
solid
spheres
other
than
liquids.
Additionally,
self-powered
system
designed
without
need
high-voltage
static
electricity,
fingers
serve
as
sources
manipulation.
flexible
precise
performance
allows
this
technology
applied
variety
applications.
For
example,
new
digital
microfluidic
(DMF)
based
array
has
been
successfully
validated
expected
replace
traditional
electrowetting-on-dielectric
future.
