Dual‐Mode Regulation of Thermochromism in Polymer‐Dispersed Cholesteric Liquid Crystals for Photoaddressing Temperature‐Resolved Encryption
Advanced Optical Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 2, 2025
Abstract
Cholesteric
liquid
crystals
(CLCs),
as
photonic
materials
with
unique
temperature
responsiveness,
show
great
potential
in
smart
optical
applications.
However,
traditional
CLC
exhibit
limitations
self‐supporting
properties
and
photoaddressing
regulation
of
thermochromism.
Here,
dual‐wavelength
responsive
donor–acceptor
Stenhouse
adducts
(DASAs)
are
incorporated
to
construct
a
sophisticated
dual‐mode
system
for
thermochromic
polymer
dispersed
cholesteric
(PDCLCs),
wherein
CLCs
droplet
form
film.
This
research
demonstrates
both
the
reversible
photoswitching
irreversible
Ultraviolet‐induced
degradation
DASAs
can
precisely
regulate
phase
PDCLCs
while
maintaining
Bragg
reflection
throughout
visible
spectrum.
Based
on
these
characteristics,
novel
temperature‐resolved
is
designed
fabricating
anti‐counterfeiting
labels,
including
erasable
disposable
permanent
temperature‐dependent
storage
indicators.
Significantly,
synergistic
interaction
between
DASA's
absorption
PDCLC's
achieves
distinctive
“flickering”
effect
(dynamic
transitions:
visible‐invisible‐visible)
display.
Moreover,
enables
dual‐photoaddressing
encryption
secret
key
within
narrow
window,
creating
“read‐and‐destroy”
encryption.
study
presents
photoregulation
strategy
multi‐mode
display
technology
simple
preparation
convenient
readout,
paving
new
ways
applications
advanced
information
Язык: Английский
Light‐Addressable Polychromatic Holographic Display via Multi‐Encoded Chiral Superstructures
Lin Zhu,
Si‐Jia Liu,
Yi‐Heng Zhang
и другие.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Июнь 1, 2025
Abstract
All‐optical
modulation
has
aroused
great
interest
with
the
fast
development
of
Photonics
Information
Age.
However,
traditional
light‐light
interaction
usually
needs
strong
pumping
power
to
accumulate
sufficiently
large
nonlinear
and
is
restricted
a
single
working
wavelength.
Here,
light‐addressable
polychromatic
holographic
display
proposed
via
multi‐encoded
chiral
superstructures.
The
shape
color
images
are
encoded
in
photo‐active
cholesteric
liquid
crystal
(CLC)
superstructures
then
can
be
reproduced
on
demand.
CLC
modulated
by
light
contrary,
have
ability
modulate
light,
serving
as
promising
medium
that
incorporates
integrated
functions
for
storage,
addressing
readout
light.
Five
displays
vividly
demonstrated,
verifying
multi‐wavelength
processing
ability.
This
work
provides
practical
option
compact,
broadband
addressable
all‐optical
modulation,
promoting
various
applications
optical
communication,
sensing,
computing.
Язык: Английский