Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: Aug. 24, 2023
Metasurfaces
have
promising
potential
to
revolutionize
a
variety
of
photonic
and
electronic
device
technologies.
However,
metasurfaces
that
can
simultaneously
independently
control
all
electromagnetics
(EM)
waves'
properties,
including
amplitude,
phase,
frequency,
polarization,
momentum,
with
high
integrability
programmability,
are
challenging
not
been
successfully
attempted.
Here,
we
propose
demonstrate
microwave
universal
metasurface
antenna
(UMA)
capable
dynamically,
simultaneously,
independently,
precisely
manipulating
the
constitutive
properties
EM
waves
in
software-defined
manner.
Our
UMA
further
facilitates
spatial-
time-varying
wave
leading
more
complicated
waveform
generation,
beamforming,
direct
information
manipulations.
In
particular,
directly
generate
modulated
waveforms
carrying
digital
fundamentally
simplify
architecture
transmitter
systems.
The
proposed
unparalleled
manipulation
capabilities
will
spark
surge
applications
from
next-generation
wireless
systems,
cognitive
sensing,
imaging
quantum
optics
science.
ACS Nano,
Journal Year:
2022,
Volume and Issue:
16(9), P. 13339 - 13369
Published: Aug. 17, 2022
Metasurfaces,
a
two-dimensional
(2D)
form
of
metamaterials
constituted
by
planar
meta-atoms,
exhibit
exotic
abilities
to
tailor
electromagnetic
(EM)
waves
freely.
Over
the
past
decade,
tremendous
efforts
have
been
made
develop
various
active
materials
and
incorporate
them
into
functional
devices
for
practical
applications,
pushing
research
tunable
metasurfaces
forefront
nanophotonics.
Those
include
phase
change
(PCMs),
semiconductors,
transparent
conducting
oxides
(TCOs),
ferroelectrics,
liquid
crystals
(LCs),
atomically
thin
material,
etc.,
enable
intriguing
performances
such
as
fast
switching
speed,
large
modulation
depth,
ultracompactness,
significant
contrast
optical
properties
under
external
stimuli.
Integration
offers
substantial
tunability
conventional
passive
nanophotonic
platforms.
Tunable
with
multifunctionalities
triggered
stimuli
bring
in
rich
degrees
freedom
terms
material
choices
device
designs
dynamically
manipulate
control
EM
on
demand.
This
field
has
recently
flourished
burgeoning
development
physics
design
methodologies,
particularly
those
assisted
emerging
machine
learning
(ML)
algorithms.
review
outlines
recent
advances
tuning
mechanisms,
applications.
We
conclude
this
paper
providing
future
perspectives
vibrant
fast-growing
field.
Science,
Journal Year:
2021,
Volume and Issue:
374(6567), P. 612 - 616
Published: Oct. 28, 2021
Electrical
switching
of
a
metal-to-insulator
transition
would
provide
building
block
for
integrated
electro-optically
active
plasmonics.
In
this
work,
we
realize
plasmonic
nanoantennas
from
metallic
polymers,
which
show
well-pronounced
localized
plasmon
resonances
in
their
state.
As
result
the
electrochemically
driven
optical
polymer,
can
be
electrically
switched
fully
off
and
back
on
at
video-rate
frequencies
up
to
30
hertz
by
applying
alternating
voltages
only
±1
volt.
With
use
concept,
demonstrate
switchable
beam-steering
metasurfaces
with
100%
contrast
ratio
transmission.
Our
approach
will
help
ultrahigh
efficiency
plasmonic-based
devices,
including
high-resolution
augmented
virtual
reality
technologies.
Abstract
Metasurfaces
have
been
continuously
garnering
attention
in
both
scientific
and
industrial
fields,
owing
to
their
unprecedented
wavefront
manipulation
capabilities
using
arranged
subwavelength
artificial
structures.
To
date,
research
has
mainly
focused
on
the
full
control
of
electromagnetic
characteristics,
including
polarization,
phase,
amplitude,
even
frequencies.
Consequently,
versatile
possibilities
wave
achieved,
yielding
practical
optical
components
such
as
metalenses,
beam-steerers,
metaholograms,
sensors.
Current
is
now
integrating
aforementioned
metasurfaces
with
other
standard
(e.g.,
light-emitting
diodes,
charged-coupled
devices,
micro-electro-mechanical
systems,
liquid
crystals,
heaters,
refractive
elements,
planar
waveguides,
fibers,
etc.)
for
commercialization
miniaturization
trends
devices.
Herein,
this
review
describes
classifies
metasurface-integrated
components,
subsequently
discusses
promising
applications
platforms
those
augmented/virtual
reality,
light
detection
ranging,
In
conclusion,
presents
several
challenges
prospects
that
are
prevalent
field
order
accelerate
metasurfaces-integrated
platforms.
Nature Communications,
Journal Year:
2022,
Volume and Issue:
13(1)
Published: June 6, 2022
Electro-optic
modulators
are
essential
for
sensing,
metrology
and
telecommunications.
Most
target
fiber
applications.
Instead,
metasurface-based
architectures
that
modulate
free-space
light
at
gigahertz
(GHz)
speeds
can
boost
flat
optics
technology
by
microwave
electronics
active
optics,
diffractive
computing
or
optoelectronic
control.
Current
realizations
bulky
have
low
modulation
efficiencies.
Here,
we
demonstrate
a
hybrid
silicon-organic
metasurface
platform
leverages
Mie
resonances
efficient
electro-optic
GHz
speeds.
We
exploit
quasi
bound
states
in
the
continuum
(BIC)
provide
narrow
linewidth
(Q
=
550
[Formula:
see
text]
nm),
confinement
to
non-linear
material,
tunability
design
voltage
GHz-speed
electrodes.
Key
achieved
of
molecules
with
r33
100
pm/V
optical
field
optimization
low-loss.
DC
tuning
resonant
frequency
quasi-BIC
11
nm,
surpassing
its
linewidth,
up
5
(fEO,-3dB
3
GHz).
Guided
mode
tune
20
nm.
Our
may
incorporate
nanostructures
any
geometry
application
layer
post-fabrication.
Chemical Reviews,
Journal Year:
2022,
Volume and Issue:
122(19), P. 15082 - 15176
Published: June 21, 2022
Nanostructured
surfaces
with
designed
optical
functionalities,
such
as
metasurfaces,
allow
efficient
harvesting
of
light
at
the
nanoscale,
enhancing
light–matter
interactions
for
a
wide
variety
material
combinations.
Exploiting
light-driven
matter
excitations
in
these
artificial
materials
opens
up
new
dimension
conversion
and
management
energy
nanoscale.
In
this
review,
we
outline
impact,
opportunities,
applications,
challenges
metasurfaces
converting
incoming
photons
into
frequency-shifted
photons,
phonons,
energetic
charge
carriers.
A
myriad
opportunities
await
utilization
converted
energy.
Here
cover
most
pertinent
aspects
from
fundamental
nanoscopic
viewpoint
all
way
to
applications.
Chemical Reviews,
Journal Year:
2022,
Volume and Issue:
122(19), P. 15177 - 15203
Published: June 28, 2022
This
Review
focuses
on
the
integration
of
plasmonic
and
dielectric
metasurfaces
with
emissive
or
stimuli-responsive
materials
for
manipulating
light-matter
interactions
at
nanoscale.
Metasurfaces,
engineered
planar
structures
rationally
designed
building
blocks,
can
change
local
phase
intensity
electromagnetic
waves
subwavelength
unit
level
offers
more
degrees
freedom
to
control
flow
light.
A
combination
nanoscale
emitters
facilitates
access
weak
strong
coupling
regimes
enhanced
photoluminescence,
lasing,
controlled
quantum
emission,
formation
exciton-polaritons.
In
addition
materials,
functional
that
respond
external
stimuli
be
combined
engineer
tunable
nanophotonic
devices.
Emerging
metasurface
designs
including
surface-functionalized,
chemically
tunable,
multilayer
hybrid
open
prospects
diverse
applications,
photocatalysis,
sensing,
displays,
information.
Nature Communications,
Journal Year:
2022,
Volume and Issue:
13(1)
Published: Sept. 29, 2022
Abstract
Deploying
advanced
imaging
solutions
to
robotic
and
autonomous
systems
by
mimicking
human
vision
requires
simultaneous
acquisition
of
multiple
fields
views,
named
the
peripheral
fovea
regions.
Among
3D
computer
techniques,
LiDAR
is
currently
considered
at
industrial
level
for
vision.
Notwithstanding
efforts
on
integration
optimization,
commercially
available
devices
have
slow
frame
rate
low
resolution,
notably
limited
performance
mechanical
or
solid-state
deflection
systems.
Metasurfaces
are
versatile
optical
components
that
can
distribute
power
in
desired
regions
space.
Here,
we
report
an
technology
leverages
from
ultrafast
FoV
deflectors
cascaded
with
large
area
metasurfaces
achieve
(150°)
high
framerate
(kHz)
which
provide
central
zones.
The
use
our
disruptive
learning
algorithms
offers
perspectives
improve
perception
decision-making
process
ADAS
