All‐In‐One Photonic Crystals With Multi‐Stimuli‐Chromic, Color‐Recordable, Self‐Healable, and Adhesive Functions
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 15, 2024
Abstract
Fabricating
photonic
crystals
(PCs)
with
dynamic
multi‐stimuli‐responsive
structural
colors,
recordable
and
self‐healable
properties
is
significant
for
their
emerging
applications,
yet
remains
a
big
challenge.
Here,
an
all‐in‐one
multifunctional
PC
(MFPC)
film
outstanding
mechanochromic,
thermochromic,
solvatochromic,
color/shape‐recordable,
self‐healable,
adhesive
functions
designed
prepared
by
simply
non‐close‐assembling
silica
particles
into
the
unique
2‐[[(Butylamino)carbonyl]oxy]ethyl
acrylate
(BCOEA)
followed
photopolymerization.
The
success
mainly
due
to
rational
combination
of
non‐close‐packing
structures
BCOEA's
characteristics,
including
its
urethane
groups
numerous
sacrificial
hydrogen
bonds,
temperature‐dependent
refractive
index,
swellable
deformable
polymer
network,
as
well
low
glass‐transition
temperature.
MFPC's
hue
color
saturation
can
be
reversibly
dynamically
modulated
strain/pressure/solvents
temperature,
respectively,
thereby
realizing
visually
spectrally
sensing
these
stimuli.
More
interestingly,
color‐responsiveness
combined
other
endows
MFPCs
fascinating
multilayer
optical
filters,
inkless
printing,
reconfigurable
multicolor
patterns,
stretching‐based
anti‐counterfeiting,
etc.
This
work
offers
new
perspective
designing
next‐generation
smart
materials
will
facilitate
all‐round
applications.
Язык: Английский
3D Anti-Counterfeiting strategies based on the bidirectional competitive shape memory of asymmetric photonic crystals
Chemical Engineering Journal,
Год журнала:
2025,
Номер
unknown, С. 159708 - 159708
Опубликована: Янв. 1, 2025
Язык: Английский
Peacock‐Inspired Janus Structural Color Materials for Multi‐Level Encryption and Anti‐Counterfeiting
Small,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 3, 2025
Abstract
The
existence
of
different
miraculous
structural
colors
in
nature
inspires
us
to
continuously
create
new
techniques,
however,
limitations
existing
fabrication
including
low
efficiency,
small
area,
and
imprecise
structure
control,
have
impeded
their
real
applications.
Mimicking
the
multi‐level
peacock
feathers,
a
one‐step
strategy
is
developed
efficiently
manufacture
Janus
color
materials
(JSCMs).
Using
surface
tension‐regulated
self‐assembly
SiO
2
nanoparticles
polyethylene
glycol
(PEG)
solution
under
80
°C,
manufacturing
process
can
be
completed
matter
minutes,
which
greatly
improves
efficiency
photonic
crystal
preparation.
front
back
JSCMs
contain
(PC)
glass
(PG)
structures,
respectively.
arrangement
on
PC
side
highly
ordered,
producing
bright
iridescent
color.
In
contrast,
order
degree
PG
low,
resulting
muted
with
less
angular
dependence.
Adjusting
molecular
weight
PEG
modulate
driving
force
assembly,
allowing
control
over
spatial
position
domain
within
film.
also
fluorescence
intensity
organic
dyes
film
produce
diverse
optical
signals
great
potential
for
information
encryption
anti‐counterfeiting.
Язык: Английский
Bio-inspired multifunctional flexible visual sensors based on structural color materials
Chemical Engineering Journal,
Год журнала:
2025,
Номер
unknown, С. 161344 - 161344
Опубликована: Март 1, 2025
Язык: Английский
Multi‐Level Wettability Patterned Porous Matrix for Advanced Optical Information Encryption
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 30, 2024
Abstract
In
the
rapidly
evolving
landscape
of
information
security,
demand
for
optical
encryption
techniques
based
on
wettability
patterning,
which
allows
decryption
without
sophisticated
devices
and
complex
procedures,
is
progressively
increasing.
However,
conventional
approaches
binary
patterned
surfaces
impose
significant
constraints
in
their
practical
use
high‐level
security.
Herein,
a
novel
approach
to
optically
encrypt
through
multi‐level
patterning
introduced
porous
polymer
matrix
synthesized
from
vinyl
methacrylate
(VMA)
poly(ethylene
glycol)
diacrylate
(PEGDA).
By
employing
thiol‐ene
click
reaction,
precise
functional
groups
achieved
that
exhibit
distinct
responses
aqueous
solutions
with
varying
surface
tensions,
as
well
pH‐responsive
fluorescent
markers.
This
system
surpasses
traditional
hydrophilic/hydrophobic
patterns
by
providing
enhanced
control
over
states,
resulting
higher‐level
information.
The
integration
pH
fluorescence
responsivity
further
elevates
complexity
security
encrypted
information,
making
it
decipherable
only
under
specific
controlled
conditions.
innovative
offers
highly
secure,
robust,
customizable
method,
redefining
potential
technologies.
Язык: Английский