Microsystems & Nanoengineering,
Год журнала:
2024,
Номер
10(1)
Опубликована: Дек. 24, 2024
Abstract
Metasurface
with
natural
static
structure
limits
the
development
of
dynamic
metasurface
holographic
display
rapid
response
and
broadband.
Currently,
liquid
crystal
(LC)
was
integrated
onto
to
convert
passive
metasuface
into
an
active
one.
But,
majority
LC-assisted
metasurfaces
often
exhibit
trade-offs
among
degree
freedom
(DoF,
typically
less
than
2),
information
capacity,
speed,
crosstalk.
Herein,
at
first
time,
we
experimentally
demonstrate
a
cascaded
device
polymer
dispersed
(PDLC)
broadband
metasurface,
enabling
three-dimensional
(3D)
ultra-high
contrast,
continuous
regulation.
The
PDLC
droplets
enable
modulation
scattering
state
incident
light
by
high-speed
control
system
for
electric
scanning.
Based
on
self-addressing,
multi-channel
PDLC-metasurface
device,
effect
monochrome
images
switching
color-changing
broadband,
low-crosstalk
high
has
been
achieved.
Our
approach
offers
novel
perspective
metasurface.
Laser & Photonics Review,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 30, 2024
Abstract
Meta‐lenses
can
offer
potential
improvements
over
traditional
optical
components
in
imaging,
display,
and
detection.
Initial
meta‐lenses
strive
for
uniform
spectral
responses
broadband
full‐color
imaging.
Nevertheless,
enhancing
wavelength
selectivity
remains
crucial
specific
applications,
such
as
fluorescence
imaging
augmented
reality,
requiring
wavelengths.
Current
methods
struggle
to
balance
nonlocal
resonance
with
local
phase
control
or
introduce
an
additional
filter
layer.
Here,
all‐dielectric
resonant
meta‐lens
wavelength‐selective
focusing
based
on
the
Fresnel
zone
plate
design
is
experimentally
demonstrated.
The
coupling
between
lattice
Mie‐type
effectively
manipulated
reflection
bandwidth.
Without
considering
excitation
control,
reflectively
focus
at
a
of
460
nm
while
allowing
normal
transmission
non‐resonant
wavelengths,
which
generally
restricted
conventional
metallic
counterparts.
Simulation
(experimental)
results
indicate
high
color
purity
90%
(66%),
surpassing
those
filtering
functions.
A
multi‐resonant
further
designed
red,
green,
blue
colors.
This
work
offers
enhanced
options
meta‐lenses,
expanding
their
display
applications.
Microsystems & Nanoengineering,
Год журнала:
2024,
Номер
10(1)
Опубликована: Дек. 24, 2024
Abstract
Metasurface
with
natural
static
structure
limits
the
development
of
dynamic
metasurface
holographic
display
rapid
response
and
broadband.
Currently,
liquid
crystal
(LC)
was
integrated
onto
to
convert
passive
metasuface
into
an
active
one.
But,
majority
LC-assisted
metasurfaces
often
exhibit
trade-offs
among
degree
freedom
(DoF,
typically
less
than
2),
information
capacity,
speed,
crosstalk.
Herein,
at
first
time,
we
experimentally
demonstrate
a
cascaded
device
polymer
dispersed
(PDLC)
broadband
metasurface,
enabling
three-dimensional
(3D)
ultra-high
contrast,
continuous
regulation.
The
PDLC
droplets
enable
modulation
scattering
state
incident
light
by
high-speed
control
system
for
electric
scanning.
Based
on
self-addressing,
multi-channel
PDLC-metasurface
device,
effect
monochrome
images
switching
color-changing
broadband,
low-crosstalk
high
has
been
achieved.
Our
approach
offers
novel
perspective
metasurface.
