A Review of an Investigation of the Ultrafast Laser Processing of Brittle and Hard Materials
Materials,
Год журнала:
2024,
Номер
17(15), С. 3657 - 3657
Опубликована: Июль 24, 2024
Ultrafast
laser
technology
has
moved
from
ultrafast
to
ultra-strong
due
the
development
of
chirped
pulse
amplification
technology.
technology,
such
as
femtosecond
lasers
and
picosecond
lasers,
quickly
become
a
flexible
tool
for
processing
brittle
hard
materials
complex
micro-components,
which
are
widely
used
in
developed
medical,
aerospace,
semiconductor
applications
so
on.
However,
mechanisms
interaction
between
an
still
unclear.
Meanwhile,
these
is
challenge.
Additionally,
highly
efficient
high-precision
manufacturing
using
needs
be
developed.
This
review
focused
on
common
challenges
current
status
materials,
nickel-based
superalloys,
thermal
barrier
ceramics,
diamond,
silicon
dioxide,
carbide
composites.
Firstly,
different
distinguished
according
their
bandgap
width,
conductivity
other
characteristics
order
reveal
absorption
mechanism
energy
during
materials.
Secondly,
transfer
transformation
investigated
by
analyzing
photons
electrons
ions
laser-induced
plasma,
well
with
continuum
Thirdly,
relationship
key
parameters
quality
discussed.
Finally,
methods
achieving
three-dimensional
micro-components
explored
detail.
Язык: Английский
2.5D femtosecond laser microstructuring of complex surface patterns
Surfaces and Interfaces,
Год журнала:
2025,
Номер
61, С. 106099 - 106099
Опубликована: Фев. 23, 2025
Язык: Английский
Nanochannels in Fused Silica through NaOH Etching Assisted by Femtosecond Laser Irradiation
Materials,
Год журнала:
2024,
Номер
17(19), С. 4906 - 4906
Опубликована: Окт. 7, 2024
Sodium
hydroxide
(NaOH)
is
increasingly
drawing
attention
as
a
highly
selective
etchant
for
femtosecond
laser-modified
fused
silica.
Unprecedented
etching
contrasts
between
the
irradiated
and
pristine
areas
have
enabled
fabrication
of
hollow,
high-aspect-ratio
structures
in
bulk
material,
overcoming
micrometer
threshold
minimum
feature
size.
In
this
work,
we
systematically
study
effect
NaOH
solutions
under
different
conditions
(etchant
concentration,
temperature,
time)
on
tracks
created
by
tightly
focused
laser
pulses
to
assess
best
practices
hollow
nanostructures
Язык: Английский
Managing Residual Heat Effects in Femtosecond Laser Material Processing by Pulse-on-Demand Operation
Journal of Manufacturing and Materials Processing,
Год журнала:
2024,
Номер
8(6), С. 254 - 254
Опубликована: Ноя. 12, 2024
Femtosecond
laser
processing
combines
highly
accurate
structuring
with
low
residual
heating
of
materials,
thermal
damage,
and
nonlinear
absorption
processes,
making
it
suitable
for
the
machining
transparent
brittle
materials.
However,
high
average
powers
pulse
repetition
rates,
becomes
relevant.
Here,
we
present
a
study
femtosecond
pulse-on-demand
operation
regime,
combined
regular
scanners,
aiming
to
improve
throughput
quality
regardless
scanner’s
capabilities.
We
developed
two
methods
define
needed
trigger
sequences
that
compensate
initial
accelerating
scanner
movements.
The
effects
were
studied
in
detail
using
direct
process
monitoring
fast
camera
indirect
optical
topographical
surface
imaging
final
structures,
both
showing
clear
advantages
precision,
effects,
structure
shape
control.
ability
irregular
movement
is
basis
simplified,
cheaper,
faster
heat-susceptible
Язык: Английский