Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 9, 2025
Recent
advancements
in
multidimensional
multiplexing
have
paved
the
way
for
meta-optics
encryption
to
be
a
viable
solution
next-generation
information
storage
and
security.
However,
challenges
persist
increasing
simultaneously
modulated
dimensions
while
minimizing
structural
complexity.
Here,
novel
single-cell
order-decoupling
method
is
proposed
realization
of
encrypted
system.
By
analyzing
mathematic
relationships
between
phases
different
diffraction
orders,
detour
phase
structure
optimized
achieve
independent
encoding
freedom
multiple
orders.
The
successfully
realize
concurrent
modulation
four
optical
dimensions:
i)
Wavelength,
ii)
Wavevector
Direction,
iii)
Polarization,
iv)
Diffraction
Order.
system
achieves
up
sixteen-channel
meta-holograms
with
low
crosstalk
exponentially
raises
threshold
brute-force
decoding
thus
remarkably
enhances
security
storage.
It
envisioned
that
on-chip
metasurface-based
strategy
augmented
reality
display
functionalities
presents
promising
applications
encryption/storage,
anti-counterfeiting,
multifunctional
photonics
integrated
circuits.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 13, 2025
Abstract
Phosphorescent
materials
offer
a
promising
approach
to
information
encryption
due
their
long
luminescence
lifetimes
and
high
signal‐to‐noise
ratios.
However,
fixed
phosphorescent
patterns
are
vulnerable
imitation
over
time,
limiting
effectiveness
in
advanced
encryption.
Here,
time‐division
multiplexing
physical
unclonable
function
(TDM‐PUF)
label
utilizing
multicolor
carbon
dots
(CDs)
is
proposed
that
leverages
variations
wavelength
lifetime
construct
time‐resolved,
multidimensional
cryptographic
protocols.
Efficient
multi‐color
phosphorescence
CDs
achieved
by
enhancing
intersystem
crossing,
suppressing
non‐radiative
transitions
through
confinement
effects,
regulating
emission
spectra
via
energy
transfer.
The
random
spatial
distribution
unpredictable
emissions
of
significantly
enhance
the
complexity
PUF
system,
thereby
fortifying
its
defenses
against
mimicry
attacks.
Furthermore,
this
system
exhibits
multiple
optical
responses
allowing
correct
recognition
only
at
specified
time
nodes,
achieving
time‐resolved
anti‐counterfeiting.
Finally,
segmenting
labels
based
on
color
channels,
non‐overlapping
multi‐time
segments
achieved,
enabling
highly
secure
multiplexed
study
provides
competitive
anti‐counterfeiting
inspires
development
novel
strategies.
Laser & Photonics Review,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 22, 2025
Abstract
Multidimensional
optical
encryption
is
crucial
for
enhancing
information
security.
The
manipulation
of
laser
spatial
modes
has
emerged
as
an
advanced
technique
expanding
encoding
dimensions.
However,
relying
exclusively
on
mode
orders
the
dimension
in
mode‐division
multiplexing
(MDM)
still
limits
potential
improving
In
this
study,
multidimensional
achieved
by
manipulating
elliptical
orbital
angular
momentum
(OAM)
within
microlasers.
By
governing
photonic
orbits
a
Fabry–Pérot
(FP)
microcavity,
four
independent
dimensions
are
established
single
OAM
mode:
azimuthal
order,
radial
ellipticity,
and
long‐axis
direction.
This
configuration
enables
4D
through
construction
microcavity
array.
Moreover,
distinct
patterns
provide
array
with
physical
unclonable
function
(PUF),
which
further
enhances
security
level
device.
study
presents
strategy
increasing
capacity
microlasers,
offering
promising
platforms
high‐security
anticounterfeiting.
Applied Physics Letters,
Год журнала:
2025,
Номер
126(8)
Опубликована: Фев. 24, 2025
Optical
metasurfaces
have
enabled
high-speed,
low-power
image
processing
within
a
compact
footprint.
However,
reconfigurable
imaging
in
such
flat
devices
remains
critical
challenge
for
fully
harnessing
their
potential
practical
applications.
Here,
we
propose
and
demonstrate
phase-change
capable
of
dynamically
switching
between
edge-detection
bright-field
the
visible
spectrum.
This
reconfigurability
is
achieved
through
engineering
angular
dispersion
at
electric
magnetic
Mie-type
resonances.
The
customized
metasurface
exhibits
an
angle-dependent
transmittance
profile
amorphous
state
Sb2S3
meta-atoms
efficient
isotropic
edge
detection,
angle-independent
crystalline
uniform
imaging.
nanostructured
Sb2S3-based
hold
significant
applications
computer
vision
autonomous
driving
systems.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 9, 2025
Recent
advancements
in
multidimensional
multiplexing
have
paved
the
way
for
meta-optics
encryption
to
be
a
viable
solution
next-generation
information
storage
and
security.
However,
challenges
persist
increasing
simultaneously
modulated
dimensions
while
minimizing
structural
complexity.
Here,
novel
single-cell
order-decoupling
method
is
proposed
realization
of
encrypted
system.
By
analyzing
mathematic
relationships
between
phases
different
diffraction
orders,
detour
phase
structure
optimized
achieve
independent
encoding
freedom
multiple
orders.
The
successfully
realize
concurrent
modulation
four
optical
dimensions:
i)
Wavelength,
ii)
Wavevector
Direction,
iii)
Polarization,
iv)
Diffraction
Order.
system
achieves
up
sixteen-channel
meta-holograms
with
low
crosstalk
exponentially
raises
threshold
brute-force
decoding
thus
remarkably
enhances
security
storage.
It
envisioned
that
on-chip
metasurface-based
strategy
augmented
reality
display
functionalities
presents
promising
applications
encryption/storage,
anti-counterfeiting,
multifunctional
photonics
integrated
circuits.
