Optics Express,
Journal Year:
2024,
Volume and Issue:
32(6), P. 10252 - 10252
Published: Feb. 23, 2024
Near-eye
displays
are
widely
recognized
as
a
groundbreaking
technological
advancement
with
the
potential
to
significantly
impact
daily
life.
Within
realm
of
near-eye
displays,
micro-LEDs
have
emerged
highly
promising
technology
owing
their
exceptional
optical
performance,
compact
form
factor,
and
low
power
consumption.
However,
notable
challenge
in
integrating
into
is
efficient
light
collimation
across
wide
spectrum
range.
In
this
paper,
we
propose
what
believe
be
novel
design
broadband
beam
metasurface
for
full-color
by
harnessing
wavefront
phase
modulation
based
on
Huygens'
principle.
Our
results
demonstrate
substantial
reduction
full
width
at
half
maximum
(FWHM)
angles,
achieving
1/10,
1/20
red,
green,
blue
compared
those
without
metasurface,
which
best
result
far
know.
The
central
intensity
increases
24.60,
36.49,
42.15
times.
Furthermore,
significant
enhancement
energy
within
±10°
achieved,
respective
multiplication
factors
14.16,
15.60,
13.00.
This
has
revolutionize
field
enabling
high-performance,
compact,
lightweight
micro-LED
applications
micro-projectors,
beyond.
PhotoniX,
Journal Year:
2024,
Volume and Issue:
5(1)
Published: Jan. 22, 2024
Abstract
Metamaterials
and
metasurfaces
of
artificial
micro-/nano-
structures
functioning
from
microwave,
terahertz,
to
infrared
regime
have
enabled
numerous
applications
bioimaging,
cancer
detection
immunoassay
on-body
health
monitoring
systems
in
the
past
few
decades.
Recently,
trend
turning
metasurface
devices
flexible
stretchable
has
arisen
that
flexibility
stretchability
not
only
makes
device
more
biocompatible
wearable,
but
also
provides
unique
control
manipulation
structural
geometrical
reconfiguration
a
creative
manner,
resulting
an
extraordinary
tunability
for
biomedical
sensing
purposes.
In
this
Review,
we
summarize
recent
advances
design
fabrication
techniques
reconfigurable
their
date
thereof,
put
forward
perspective
future
development
metamaterials
metasurfaces.
Opto-Electronic Advances,
Journal Year:
2024,
Volume and Issue:
7(8), P. 240095 - 240095
Published: Jan. 1, 2024
Based
on
the
principle
of
super-symmetric
lens
with
quadratic
phase
gradient
transformation,
combined
digital
coding
metasurface,
we
propose
a
wide-angle
coded
metalens
for
focusing
control
in
two-dimensional
space.
This
achieves
focus
shift
x-direction
by
changing
oblique
incidence
angle
incident
wave,
and
y-direction
combining
convolution
digitally
metasurface
to
achieve
flexible
light
plane.
The
unit
is
mainly
composed
three-layer
metal
structure
two
layers
medium,
transmission
obtained
middle
layer
structure,
which
turn
obtains
required
distribution
metalens.
design
realizes
function
large
viewing
at
x-polarized
incidence,
control.
Experimentally,
prepared
designed
tested
experimental
results
are
good
agreement
results.
Frontiers in Physics,
Journal Year:
2021,
Volume and Issue:
8
Published: Jan. 14, 2021
Metamaterial
is
a
kind
of
material/structure
that
artificially
designed
and
has
exceptional
electromagnetic
properties
and/or
other
physical
properties,
not
found
in
nature.
A
class
metamaterial
with
only
one
or
few
layers
periodic
aperiodic
arranged
cell
structures
the
direction
waves
propagation
can
be
referred
to
as
metasurface.
Metasurface
considered
two-dimensional
representation
realize
controlling
amplitude,
phase,
polarization
state/direction
incident
wave.
According
novel
characteristics
metasurface
its
big
advantages,
series
new
planar
devices
systems
based
on
developed.
The
goal
this
review
article
firstly
provide
introductions
for
basic
metasurface,
significance
application
principles.
Meanwhile,
main
research
progresses
regular
metasurfaces
newly
developed
reconfigurable
are
analyzed,
focusing
types
amplitude
modulation,
phase
multidimensional
modulation.
Finally,
significances
development
trend
important
engineering
practical
applications
analyzed
end.
npj Computational Materials,
Journal Year:
2022,
Volume and Issue:
8(1)
Published: Sept. 6, 2022
Abstract
Kirigami-engineering
has
become
an
avenue
for
realizing
multifunctional
metamaterials
that
tap
into
the
instability
landscape
of
planar
surfaces
embedded
with
cuts.
Recently,
it
been
shown
two-dimensional
Kirigami
motifs
can
unfurl
a
rich
space
out-of-plane
deformations,
which
are
programmable
and
controllable
across
spatial
scales.
Notwithstanding
Kirigami’s
versatility,
arriving
at
cut
layout
yields
desired
functionality
remains
challenge.
Here,
we
introduce
comprehensive
machine
learning
framework
to
shed
light
on
design
rationally
guide
control
Kirigami-based
materials
from
meta-atom
metamaterial
level.
We
employ
combination
clustering,
tandem
neural
networks,
symbolic
regression
analyses
obtain
fulfills
specific
constraints
inform
their
deployment.
Our
systematic
approach
is
experimentally
demonstrated
by
examining
variety
applications
different
hierarchical
levels,
effectively
providing
tool
discovery
shape-shifting
metamaterials.
Nanomaterials,
Journal Year:
2022,
Volume and Issue:
13(1), P. 118 - 118
Published: Dec. 26, 2022
One
of
the
fastest-expanding
study
areas
in
optics
over
past
decade
has
been
metasurfaces
(MSs).
These
subwavelength
meta-atom-based
ultrathin
arrays
have
developed
for
a
broad
range
functions,
including
lenses,
polarization
control,
holography,
coloring,
spectroscopy,
sensors,
and
many
more.
They
allow
exact
control
properties
electromagnetic
waves.
The
performance
MSs
dramatically
improved
because
recent
developments
nanofabrication
methods,
this
concept
to
point
that
it
may
be
used
commercial
applications.
In
review,
vital
topic
sensing
considered
an
up-to-date
carried
out.
Three
different
kinds
MS
absorber
sensor
formations,
all-dielectric,
all-metallic,
hybrid
configurations,
are
presented
biochemical
We
believe
review
paper
will
provide
current
knowledge
on
state-of-the-art
devices
based
MSs.
PhotoniX,
Journal Year:
2023,
Volume and Issue:
4(1)
Published: June 15, 2023
Abstract
Nanoimprint
lithography
(NIL)
has
attracted
attention
recently
as
a
promising
fabrication
method
for
dielectric
metalenses
owing
to
its
low
cost
and
high
throughput,
however,
aspect
ratio
(HAR)
nanostructures
are
required
manipulate
the
full
2π
phase
of
light.
Conventional
NIL
using
hard-polydimethylsiloxane
(h-PDMS)
mold
inevitably
incurs
shear
stress
on
which
is
inversely
proportional
surface
area
parallel
direction
detachment.
Therefore,
HAR
structures
subjected
larger
stresses,
causing
structural
failure.
Herein,
we
propose
novel
wet
etching
with
no
detachment
process
fabricate
flawless
metalenses.
The
water-soluble
replica
fabricated
polyvinyl
alcohol
(PVA)
simpler
than
an
h-PDMS
mold,
flexibility
PVA
suitable
direct
printing
tensile
modulus
allows
high-resolution
patterning
diffraction-limited
focusing
printed
demonstrates
that
it
operates
ideal
lens
in
visible
regime.
This
can
potentially
be
used
manufacturing
various
nanophotonic
devices
require
at
facilitating
commercialization.
