Photonics Research,
Год журнала:
2024,
Номер
12(10), С. 2158 - 2158
Опубликована: Июнь 5, 2024
Metasurfaces
have
prompted
the
transformation
from
investigation
of
scalar
holography
to
vectorial
and
led
various
applications
in
optical
field
manipulation.
However,
majority
previously
demonstrated
methods
focused
on
reconstruction
a
holographic
image
located
at
predefined
individual
plane.
The
evolution
polarization
during
propagation
can
provide
more
design
freedoms
for
realizing
three-dimensional
with
complicated
feature.
Here,
we
Jones
matrix
framework
generate
images
continuously
varied
distributions
multiple
different
planes
based
height
tunable
metasurface.
proposed
metasurface
is
composed
IP-L
(a
type
photoresist)
nanofins
lengths,
widths,
heights,
as
well
orientation
angles
fabricated
by
femtosecond
laser
direct
writing.
Such
fabrication
method
favor
3D
arbitrary
structure
processing,
large
area
fabrication,
curved
substrates.
Meanwhile,
it
easy
fabricate
structures
that
be
integrated
other
devices,
including
fibers,
photodetectors,
complementary
metal–oxide
semiconductors.
Our
provides
feasible
way
high-dimensional
fields
longitudinally
features
perspective
used
related
areas
trapping,
sensing,
imaging.
Abstract
Structural
colors
generated
by
optical
micro-/nanostructures
offer
a
notable
advantage
over
traditional
chemical
pigments,
including
higher
purity,
greater
brightness,
resistance
to
fading,
and
enhanced
environmental
friendliness.
However,
achieving
dynamically
switchable
color
displays
with
high
performances
without
resorting
complex
nanofabrication
methods
remain
challenge.
Here,
we
present
simple
method
using
grayscale
lithography
conformal
coating
create
Salisbury
screen
(SS)
cavities
variable
resonant
wavelengths,
enabling
the
formation
of
tunable
colorful
patterns.
The
dynamic
display
is
achieved
through
phase
change
vanadium
dioxide
(VO
2
)
nanostructures
under
electrothermal
effects.
At
low
actuation
voltage
1.4
V,
switching
such
as
sensitivity,
fast
speed,
repeatability,
wide-view
angle
are
achieved.
structural
colors,
featuring
preparation
process
high-speed
switching,
represent
promising
alternative
for
applications
thermal
sensors,
security
information
encryption,
full-color
displays.
Laser & Photonics Review,
Год журнала:
2024,
Номер
18(10)
Опубликована: Май 7, 2024
Abstract
Highly
efficient
and
programmable
writing
of
multidimensional
optical
data
is
great
value
for
next‐generation
high‐throughput
information
technologies
but
has
been
rarely
achieved.
Here,
a
one‐step
frame
printing
chromatic
pixels
in
lithium
niobate
crystal
by
using
single
ultrafast
laser
pulse
reported.
In
this
strategy,
phase
superposition‐based
spatial
light
modulation
strategy
applied
to
split
into
multiple
son
pulses
with
designated
properties
distribution
patterns.
It
demonstrated
that
these
allow
massively
creating
micro‐amorphous
transition
zones
on‐demand
structural
features
can
modulate
the
intrinsic
birefringence
matrix
generate
wavelength‐selective
interference
visible
band
form
pixel‐level
patterns,
namely,
single‐pulse‐driven
color
printing.
The
created
be
encoded
computer‐recognizable
arrays
play
role
high‐efficiency
recording.
presented
approach
enables
fast
batch
3D
space
serve
as
versatile
tool
boosting
optics.
Wearable electronics.,
Год журнала:
2024,
Номер
1, С. 91 - 110
Опубликована: Май 15, 2024
With
intrinsic
properties
of
flexibility,
biocompatibility
and
lightweight,
organic
semiconductors
have
gained
significant
interests
witnessed
substantial
progresses
in
microelectronics
optoelectronics.
Recently,
the
rapid
development
wearable
electronics
such
as
near-eye
displays
requires
downscaling
semiconductor
devices
to
micrometers
provide
immersive
experiences
low
power
consumption.
This
review
summarizes
our
work
patterned
growth
since
2007,
with
aim
developing
a
photolithography
compatible
technology
for
ultra-high-resolution
devices.
Upon
deposition
onto
surfaces,
molecules
can
be
selectively
grown
on
designated
areas
three
different
mechanisms
which
are
dependent
molecular
chemical
structure,
parameters,
pre-pattern
chemistry
dimensions.
The
mechanisms,
induced
namely
by
binding
energy
difference,
step-edges
surface
density
modulation,
rooted
initial
nucleation
molecules,
analog
those
inorganic
thin
film
at
atomic
scale.
engineered
physically
dimensionally
under
various
circumstances
vacuum,
air,
solution,
or
emulsion.
Finally,
employing
these
strategies,
ultrahigh-resolution
electronic
optoelectronic
demonstrated,
outlook
further
developments
discussed.
Photonics,
Год журнала:
2025,
Номер
12(1), С. 31 - 31
Опубликована: Янв. 2, 2025
Metalenses
have
excellent
modulation
capabilities
in
terms
of
phase,
amplitude,
and
polarization
light,
significantly
reducing
the
size
complexity
imaging
systems,
showing
great
application
prospects.
However,
like
traditional
optical
meta-atoms,
ordinary
metalenses
suffer
from
a
significant
chromatic
aberration
problem
because
it
is
difficult
to
design
phase
distribution
for
different
wavelengths
on
single-layer
metalens.
To
address
this,
various
methods
correcting
been
proposed
demonstrated,
such
as
spatial
multiplexing,
material
hybridization,
increasing
cross-sectional
diversity
metalens
meta-atoms.
In
this
paper,
novel
method
used,
which
expands
parameter
space
by
meta-atoms
provide
required
focusing
wavelengths,
combined
with
particle
swarm
optimization
compensation.
The
multi-level
designed
achieves
constant
approximate
focal
length
visible
wavelength
range
λ
=
450–650
nm,
polarization-independent
absolute
efficiency
about
17%,
numerical
aperture
(NA)
0.31
lens
diameter
100
μm.
This
improves
quality.
Abstract
The
burgeoning
demand
for
high-performance
computing,
robust
data
processing,
and
rapid
growth
of
big
necessitates
the
emergence
novel
optical
devices
to
efficiently
execute
demanding
computational
processes.
field
meta-devices,
such
as
metamaterial
or
metasurface,
has
experienced
unprecedented
over
past
two
decades.
By
manipulating
amplitude,
phase,
polarization,
dispersion
light
wavefronts
in
spatial,
spectral,
temporal
domains,
viable
solutions
implementation
all-optical
analog
computation
information
processing
have
been
provided.
In
this
review,
we
summarize
latest
developments
emerging
trends
meta-devices
innovative
platforms
spatial
differentiators
processing.
Based
on
general
concepts
Fourier
transform
Green’s
function,
analyze
physical
mechanisms
application
amplitude
differentiation,
phase
differentiation
their
applications
image
edge
detection,
enhancement,
beam
shaping.
Finally,
explore
current
challenges
potential
provide
perspectives
future
research
directions
possible
developments.
Nature Communications,
Год журнала:
2025,
Номер
16(1)
Опубликована: Март 6, 2025
Multimodal
optical-materials
are
highly
desirable
due
to
their
advantages
in
enhancing
information
security,
though
independent
modulation
is
challenging,
especially
accurately
controlling
the
orthogonal
relationship
between
structural
coloration
(SC)
and
fluorescence
(FL)
pattern.
Herein,
we
report
a
strategy
which
combines
programmable
switchable
circularly
polarized
luminescence
(CPL)
for
multimodal
encryption.
Using
photomask
with
aligned
grating,
periodic
patterns
fabricated
on
polydiacetylene
(PDA)
gel
film,
produces
image
tunable
colors.
Introducing
chiral
layer
containing
perovskite
nanocrystals
twisted-stacking
Ag
nanowires
(NWs)
bilayers,
provides
stimuli-responsive
FL
CPL
high
dissymmetry
factor
(glum,
up
1.3).
Importantly,
(including
pattern)
can
be
independently
modulated
without
mutual
interference,
even
selectively
concealed
or
exposed
by
varying
microstructure
design
of
cross-linked
PDA
acetonitrile
treatment.
Optics Letters,
Год журнала:
2025,
Номер
50(8), С. 2546 - 2546
Опубликована: Март 11, 2025
Metagratings,
a
type
of
metasurface,
exhibit
various
diffraction
effects
that
are
influenced
by
the
background
refractive
index.
In
this
paper,
we
propose
metagrating
maintains
constant
primary
angle
across
different
indices.
Utilizing
particle
swarm
optimization
(PSO)
algorithm,
designed
with
68°
in
both
air
and
water,
achieving
efficiencies
70%
61.5%,
respectively.
Numerical
simulations
confirm
its
robust
diffractive
properties
regardless
environment.
This
study
introduces
novel,
to
best
our
knowledge,
methodology
for
designing
optical
components
suitable
diverse
media,
potential
applications
beam
deflection,
imaging,
detection.
