Abstract
Optical
encryption
is
a
potential
scheme
for
information
security
that
exploits
abundant
degrees
of
freedom
light
to
encode
information.
However,
conventional
based
on
fluorescent
materials
faces
challenges
in
handling
complex
secret
Alternatively,
single‐pixel
imaging
(SPI)
provides
computational
modality
solve
these
problems.
In
this
study,
high‐capacity
fluorescence
scheme,
achieved
by
introducing
lanthanide
and
steganography
into
the
encoding
decoding
processes
SPI
proposed.
Two
types
well‐designed
luminescent
are
utilized
excited
generate
images
(fluo‐images),
which
crucial
scheme.
Various
practical
experiments
using
fluo‐images
as
keys
demonstrate
robustness,
effectiveness,
repeatability
Furthermore,
multi‐image
indicate
method
increase
capacity.
Thus,
proposed
does
provide
an
efficient
strategy
security,
can
improve
traditional
optical
simultaneously
enhance
flexibility
decryption.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 13, 2024
The
combination
of
advanced
photoluminescence
characteristics
to
photochromism
is
highly
attractive
in
preparing
high-performance
multifunctional
photo-responsive
materials
for
optoelectronic
applications.
However,
this
rather
challenging
material
design
owing
the
limited
mechanism
understanding
and
construction
principles.
Here,
an
effective
strategy
integrate
afterglow
emission
carbon
dots
(CDs)
proposed
through
embedding
naphthaleneimide
(NI)
structure
CDs
followed
by
polyvinylpyrrolidone
(PVP)
encapsulation.
NI-structured
CDs-PVP
shows
intrinsic
situ
formation
NI-radical
anions
controllable
multi-stimuli-responsive
behaviors
related
oxygen-trigged
triplet
exciton
quenching
Förster
resonance
energy
transfer
(FRET)
from
pristine
photoactivated
radicals.
Notably,
a
wide
range
appearance
colors
colorless
brown,
luminescence
color
transition
blue
yellow,
much
elongated
lifetime
up
253
ms
are
observed.
With
extraordinary
stimuli-chromic
stimuli-luminescent
film
dynamically
responsive
multiple
external
stimuli,
reversible
secure
snapchat,
data
encryption/decryption
synaptic
imaging
recognition
realized.
These
findings
demonstrate
fundamental
principle
photochromic
with
afterglow,
providing
important
understandings
on
synergic
dynamic
thereby
expanding
their
applications
information
anti-counterfeiting
artificial
intelligence.
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 19, 2025
Abstract
Organic
room
temperature
phosphorescence
(ORTP)
polymer
materials
have
sparked
considerable
research
interests
in
recent
years,
but
their
optical
function
is
still
limited
for
multi‐mode
imaging.
Herein,
a
feasible
and
universal
approach
proposed
to
endow
ORTP
with
periodic
refractive
index
modulation
functions
by
holographic
patterning.
The
key
this
design
two‐stage
stepwise
crosslinking.
Stage‐1,
low
crosslinking
density
(≤0.75
mol
L
−1
),
phosphorescence‐silent
can
provide
greater
free
volume
monomer
diffusion
thus
facilitate
the
patterning
of
modulated
holograms
via
photopolymerization‐induced
phase
separation.
dense
at
stage‐2
turn
on
intensity
rising
144%
when
increases
from
3.77
4.12
.
enhanced
primarily
ascribed
increase
conformational
distortion
spin‐orbit
coupling
organic
phosphors
based
theoretical
calculations.
Eventually,
first
example
demonstrated
plastic
unique
capability
independently
displaying
andphosphorescent
images.
This
work
not
only
provides
novel
paradigm
impart
added
also
paves
way
development
high‐security
combat
counterfeiting.
Advanced Optical Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 29, 2025
Abstract
Optical
information
encryption
is
an
effective
security
strategy
currently
used
to
protect
data
and
prevent
leakage.
However,
the
optical
technology
based
on
mechanoluminescent
(ML)
materials
faces
challenges
of
single
mode
lack
systematic
dual‐key
decryption
strategies.
In
this
study,
a
three‐layer
structure
encoder
proposed
using
porous
ML
material
as
luminescent
layer,
quartz
transparent
tube
with
pressure‐sensing
capabilities
stress‐loading
photodetector
recognition
layer.
A
system
evolution
mechanism
Ba‐Gua
constructed.
The
encoding
process
completed
within
micro
darkroom
fabricated
3D
printing
technology.
This
incorporates
virtual
position
in
conjunction
trigram
orientation,
requiring
two
keys
for
correct
decryption:
“Combination
Relative
Intensity
Ratio”
“Virtual
Position
Space
Code”.
By
linking
emission
spectrum
information,
dynamic,
rewritable
hybrid
digital
Chinese
character
established.
offer
new
directions
concealing
confidential
multidimensional
applications.
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 3, 2025
Abstract
Non‐iridescent
photonic
glass
pigments
of
block
copolymers
show
great
potential
for
sustainable
structural
coloration.
However,
the
ability
to
create
accurate
RGB
color
mixtures
real‐world
applications
is
limited
by
prevalent
use
non‐degradable,
fossil
oil‐derived
components
and
difficulty
in
achieving
pure
red
hues.
This
work
presents
an
alternative
strategy
more
coloration
fabricating
composite
through
controlled
self‐assembly
water,
vegetable
oil,
biodegradable
bottlebrush
(BBCPs)
a
complex
emulsion
system.
The
obtained
balls
feature
unprecedented
multicompartment
structures
characterized
short‐range
ordered
assembly
water
nanodroplets
stabilized
BBCPs,
along
with
oil
droplets
these
nanodroplets,
which
substantially
enhances
resistance
Ostwald
ripening.
Furthermore,
new
model
introduced
eliminate
disordered
scattering,
successfully
creating
overcoming
long‐standing
limitation
versatile
chromatic
engineering.
Advanced Optical Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 4, 2025
Abstract
Low‐dimensional
metal
halides
have
emerged
as
promising
anti‐counterfeiting
materials.
However,
achieving
a
multi‐mode
and
multi‐color
system
in
remains
challenging.
In
this
study,
copper‐halide
(TBP)
2
Cu
4
Br
6
(TBP
+
=
C
16
H
36
P
)
single
crystals
are
synthesized
using
cooling
crystallization
method,
which
exhibits
efficient
dual‐band
emissions
(542
708
nm),
large
Stokes
shifts
(282
330
high
photoluminescence
quantum
yield
(PLQY)
of
92.7%
for
542
nm.
These
exceptional
properties
attributed
to
the
unique
0D
structure
crystals,
facilitates
formation
two
different
self‐trapped
excitons
(STEs).
Furthermore,
based
on
,
digital
integrated
is
designed
with
Morse
code
information
encryption,
demonstrating
applications
security
anti‐counterfeiting.
This
work
not
only
illustrates
an
emitter
copper
but
also
paves
way
systems.
Nano-Micro Letters,
Journal Year:
2025,
Volume and Issue:
17(1)
Published: March 13, 2025
Abstract
Despite
great
progress
in
developing
mode-selective
light
emission
technologies
based
on
self-emitting
materials,
few
rewritable
displays
with
multiple
emissions
have
been
demonstrated.
Herein,
we
present
a
triple-mode
light-emitting
display
enabled
by
stimuli-interactive
fluorescence
(FL),
room-temperature
phosphorescence
(RTP),
and
electroluminescence
(EL).
The
comprises
coplanar
electrodes
separated
gap,
polymer
composite
FL
inorganic
phosphors
(EL/FL
layer),
solvent-responsive
RTP
additives
(RTP
layer).
Upon
254
nm
UV
exposure,
dual-mode
of
occurs
from
the
EL/FL
layers,
respectively.
When
polar
liquid,
besides
water,
is
applied
an
AC
field
between
electrodes,
EL
layer
triggered,
operates
triple
mode.
Interestingly,
when
water
to
display,
mode
deactivated,
rendering
operate
dual
EL.
By
manipulating
evaporation
liquids
FL,
RTP,
display.
Additionally,
high-security
full-color
information
encryption
demonstrated,
wherein
digital
numbers,
letters,
Morse
code
encoded
one
optical
only
deciphered
properly
matched
that
other
two
modes.
Thus,
this
article
outlines
strategy
fulfill
substantial
demand
for
personalized
multi-light-emitting
displays.
Advanced Optical Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 19, 2025
Abstract
Diamond
exhibits
unique
performance
across
a
wide
range
of
applications
due
to
its
enormous
presentable
properties
in
electronic,
photonic,
and
quantum
fields.
Yet
heterogeneous
integration
diamonds
for
on‐chip
functionalities,
like
2D
materials,
remains
challenging
the
hard
acquisition
scalable,
transferable,
ultrathin
diamond
samples.
Recently,
edge‐exposed
exfoliation
is
demonstrated
as
an
effective
way
produce
wafer‐scale,
freestanding,
films.
However,
incompatibility
newly
developed
film
with
conventional
nano‐fabrication
methods
makes
it
difficult
fabricate
into
practical
devices.
Herein,
mask‐transferring
by
sugar
versatile
method
pattern‐definition
on
films,
which
shows
satisfying
geometrical
resolution
accuracy
comparing
approaches.
Additionally,
based
this
method,
flexible
all‐diamond
metasurfaces
functioning
structural
colors
are
achieved,
indicates
potential
fabricating
more
diamond‐related
Abstract
With
the
rapid
advancement
of
information
technology,
demand
for
data
storage
has
grown
significantly,
and
optical
attracted
considerable
attention
due
to
its
unique
advantages.
However,
current
technologies
are
primarily
based
on
single‐channel
visible
light
regions,
limiting
security
existing
storage.
Thus,
it
is
necessary
develop
new
materials
a
multi‐channel
encryption
strategy
invisible
light.
In
this
work,
we
report
Ruddlesden‐Popper
phase
Ba
2
SnO
4
phosphor
with
photostimulated
luminescence
(PSL)
properties,
enhance
near‐infrared
emission
through
fluorine
substitution
achieve
multi‐level
encryption.
The
enhanced
mechanisms
elucidated
by
investigating
effects
fluorine‐induced
lattice
distortion
enrichment
self‐trapped
excitons
(STEs)
increased
oxygen
vacancies.
Additionally,
density
functional
theory
calculations
reveal
influence
F
formation
energy
vacancies,
providing
insight
into
specific
vacancy
sites
that
contribute
STEs.
Furthermore,
observed
PSL
properties
exhibit
repeatable
capabilities.
Based
this,
dual‐channel
scheme
using
encoding
designed,
offering
approach
Nanoscale Advances,
Journal Year:
2024,
Volume and Issue:
6(23), P. 5853 - 5860
Published: Jan. 1, 2024
Labels
with
structural
color
based
on
photonic
crystals
(PCs)
have
drawn
significant
attention
due
to
their
unique
emission,
offering
promising
solutions
for
anti-counterfeiting
applications.
However,
meet
the
demands
of
future
high-security
applications,
conventional
labels
require
further
improvement.
This
study
introduces
a
novel
approach
fabricate
highly
encrypted
by
combining
close-packed
and
non-close-packed
monolayers
nanoparticles
(NPs)
onto
adhesive
surfaces.
The
crystals,
arranged
in
specific
geometric
shapes,
exhibit
overt-covert
characteristics.
hidden
label
is
only
revealed
under
external
triggers,
such
as
attaching
or
removing
transparent
cover
film.
principle
modulation
crystal
elucidated,
highlighting
role
packing
density
refractive
index
matching.
Additionally,
scalability
cost-effectiveness
fabrication
process
this
are
expected
facilitate
commercialization.
Various
including
water-responsive
multi-layer
authentication,
demonstrated
also,
which
enables
higher
security
levels
versatility
study.
