Abstract
To
counter
economic
terrorism
by
preventing
counterfeit
currency,
documents
and
high‐value
commercial
products,
new‐generation
security
inks
with
multiple
safety
features
are
required.
Herein,
color‐tunable
pyrylium
pyridinium
dye‐encapsulated
polymethyl
methacrylate
(PMMA)
colloidal
microspheres
reported
to
exhibiting
brilliant
emission
photonic
properties.
A
combination
of
the
PMMA
ink
having
structural
color
variation
fluorescence
modulation
is
used
for
labeling.
The
angle‐dependent
variations,
a
remarkable
250‐fold
enhancement,
non‐toxicity,
rare
earth‐free
formulation
have
made
novel
suitable
dual‐layer
high‐security
printing.
Covert
patterns
labels
overt
under
365
nm
UV
light,
while
also
color.
increased
level
developed
demonstrated
screen‐printed
images
on
flexible
substrates.
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.
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 19, 2024
Abstract
Blue
phase
liquid
crystals
(BPLCs)
have
exhibited
promising
applications
in
3D
flexible
displays
due
to
their
molecular‐level
self‐assembled
chiral
structures,
fast
response,
and
tunable
polarized
colors.
However,
there
remain
challenges
for
spatiotemporal
programming
of
color
units
BPLC
dynamic
patterning.
Herein,
the
programmable
temporal
evolution
micrometer‐scale
spatial
configuration
switch
modes
are
achieved
by
spontaneous
ink
diffusion‐driven
asymmetric
lattice
deformation
dual‐chiral
polymer‐templated
blue
phases.
Custom‐printed
colorful
patterns
designed
machine
learning‐assisted
parameter
optimization,
which
multidimensional
encrypted
information
that
incorporates
evolving
colors
(wavelength),
distribution
(depth),
(L/R).
The
quantitative
relationship
between
diffusion
kinetics
blue‐phase
structural
optics
is
established
situ
characterization,
finite
element
analysis,
mathematical
geometry
modeling.
This
work
provides
insights
into
microgeometric
manipulation
BPLCs
application
security
self‐adaptive
indicators.
Nanophotonics,
Год журнала:
2025,
Номер
14(5), С. 547 - 558
Опубликована: Март 1, 2025
Abstract
Structural
coloration,
a
color-generation
mechanism
often
found
in
nature,
arises
from
light–matter
interactions
such
as
diffraction,
interference,
and
scattering,
with
micro-
nanostructured
elements.
Herein,
we
systematically
study
anisotropic,
3D-architected
grating
structures
polarization-tunable
optical
properties,
inspired
by
the
vivid
blue
of
Morpho
butterfly
wings.
Using
two-photon
lithography,
fabricate
multilayered
gratings,
varying
parameters
height
(through
scanning
speed
laser
power),
periodicity,
number
layers.
In
transmission,
significant
color
transitions
to
brown
were
identified
when
structural
incident
light
polarization
conditions
(azimuthal
angle
ellipticity).
Based
on
thin
film
diffraction
efficiency
theory
Raman–Nath
regime,
characterization
results
are
analytically
explained,
evaluating
impact
each
parameter
variation.
Overall,
these
findings
contribute
technological
implementations
polarization-sensitive,
gratings
for
applications.
Surface
energy,
as
an
intrinsic
property
of
solids,
plays
a
crucial
role
in
modulating
the
characteristics
solid
surfaces,
especially
solid–liquid
interface.
Due
to
inevitable
processes
such
surface
adsorption
or
contamination,
energy
practical
solids
is
usually
nonuniform.
However,
if
this
nonuniformity
rationally
designed
and
effectively
utilized,
it
capable
endowing
great
potential
for
liquid
manipulation.
With
rapid
development
microfabrication
modification
techniques,
variety
artificial
patterned
surfaces
(PSESs)
have
been
fabricated,
which
extend
diversity,
tunability,
precision
liquid-based
applications.
In
review,
we
discuss
regulation
interface
properties
with
PSESs
from
relatively
macroscopic
perspective,
particularly
focusing
on
how
control
matter
through
rational
design.
First,
provide
brief
introduction
about
definition
significance
PSESs.
Then,
selective
adhesion
by
summarized,
including
dynamics
regulation,
crystallization
inducement,
biosample
self-distribution.
following,
regulate
physical
fields,
thermal
field,
electric
acoustic
explanation
centered
discontinuous
contact
Finally,
associated
challenges
scenarios
are
included.
ACS Applied Optical Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 27, 2025
Developing
approaches
to
tailor
iridescence
generated
by
microscale
structures
is
essential
for
applications
ranging
from
sensors
security
materials.
Here,
we
achieve
tunable
combining
refractory
interfaces
with
concave
microstructures
generate
multibounce
reflection
interference.
By
incorporating
designed
interfaces,
demonstrate
the
ability
control
distribution
of
illumination
angles
entering
structured
cavity
thereby
modulating
resulting
color
and
efficiency.
Experimental
analysis
Janus
droplets
combined
ray
tracing
simulations
highlight
how
elements
modify
optical
paths
reflections
alter
angle-dependent
coloration.
Additionally,
investigate
incorporation
axion
lenses
that
refract
focus
light
onto
microstructure
increase
efficiency
while
maintaining
saturation.
The
integration
reflective
cavities
provides
customizable
routes
structural
coloration
performance
interference,
advancing
design
high-performance
Chemical Society Reviews,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
This
review
focuses
on
stimuli-responsive
material
(SRM)-based
data
protection,
emphasizing
the
integration
of
intricate
logic
and
algorithms
in
SRM-constructed
hardware.
It
also
discusses
current
challenges
future
directions
field.
ABSTRACT
Textile‐based
structurally
colored
materials
have
emerged
as
a
captivating
field
of
research
and
innovation,
presenting
unparalleled
prospects
to
revolutionize
the
realm
textiles
their
diverse
applications.
This
review
paper
provides
comprehensive
overview
progress
made
in
manufacturing
methods
applications
textiles.
Based
on
principles
Bragg
diffraction
its
extended
theorems,
mechanisms
behind
generation
structural
colors
are
explored,
revealing
underlying
that
enable
coloration.
The
versatile
effective
strategies
adopted
for
fabrication
textile‐based
materials,
such
gravity
sedimentation,
spray
coating,
vertical
deposition,
screen
printing,
shear‐induced
assembly,
additive
or
three‐dimensional
(3D)
dip
electrophoretic
electrospinning
discussed.
discussed,
with
specific
focus
anti‐counterfeiting
measures,
biomedical
field,
radiative
cooling
aims
drive
fabricating
functionalizing
ultimate
goal
expanding
fields.
