Micromachines,
Год журнала:
2024,
Номер
15(6), С. 808 - 808
Опубликована: Июнь 20, 2024
Creatures
in
nature
make
extensive
use
of
structural
color
adaptive
camouflage
to
survive.
Cholesteric
liquid
crystals,
with
nanostructures
similar
those
natural
organisms,
can
be
combined
actuators
produce
bright
colors
response
a
wide
range
stimuli.
Structural
modulated
by
nano-helical
structures
continuously
and
selectively
reflect
specific
wavelengths
light,
breaking
the
limit
recognizable
human
eye.
In
this
review,
current
state
research
on
cholesteric
crystal
photonic
their
technological
applications
is
presented.
First,
basic
concepts
crystals
nanostructural
modulation
are
outlined.
Then,
responding
different
stimuli
(mechanical,
thermal,
electrical,
humidity,
magnetic,
pneumatic)
This
review
describes
practical
summarizes
prospects
for
development
these
advanced
as
well
challenges
promising
applications.
Laser & Photonics Review,
Год журнала:
2024,
Номер
18(5)
Опубликована: Янв. 12, 2024
Abstract
Rapid
humidity
response
contributes
tremendously
to
visually
flexible
wearables.
However,
sluggish
response,
infrequent
reproducibility,
and
biotoxicity
restrict
the
development
of
wearable
devices.
Here,
inspired
by
changes
in
color
Dynastes
hercules
,
a
wearable,
rapid
stretchable,
rewritable
meta‐silk
fibroin
diffractive
film
(mSFD)
is
presented.
The
generated
spin‐coating
silk
protein
polyurethane
(PU)
cross‐linking,
followed
hot
pressing
meta‐structures.
Owing
diffraction
stable
combination
SF
β
‐structure
PU
hydrogen
bond,
mSFDs
exhibit
excellent
coloration,
erasability.
Notably,
microcolumns
microporous
structures
on
meta‐membrane
endow
membrane
with
unparalleled
features.
Fast
disappearance
reappearance
are
observed
under
high
conditions
(response
time
<2
ms,
cycle
1
s).
In
particular,
responsiveness
mSFP
induces
change
membrane,
which
enables
its
application
real‐time
biomonitoring
(wound
management,
mask
regulation)
anticounterfeiting
(medicine
storage,
fingerprint
recognition).
These
properties
bioinspired
mSFD
P
potential
field
robotic
skin.
Recent
advances
in
soft
sensor
technology
have
pushed
digital
healthcare
toward
life-changing
solutions.
Data
reliability
and
robustness
can
be
realised
by
building
arrays
that
collect
comprehensive
biological
parameter
data
from
several
points
on
the
underlying
organs
simultaneously,
a
principle
is
inspired
bioreceptors.
The
rapid
growth
of
lithography
printing,
three-dimensional
(3D)
weaving/knitting
technologies
has
facilitated
low-cost
development
sensors
array
format.
Advances
acquisition,
processing,
visualisation
techniques
helped
with
collection
meaningful
using
their
presentation
to
users
personal
devices
through
wireless
communication
interfaces.
Local-
or
cloud-based
storage
helps
adequate
over
time
facilitate
reliable
prognoses
based
historical
data.
Emerging
energy
harvesting
led
power
sustainably.
This
review
presents
developmental
blocks
wearable
artificial
organ-based
arrays,
including
bioreceptor-inspired
sensing
mechanisms,
fabrication
methods,
data-acquisition
techniques,
methods
present
results
users,
systems,
target
diseases/conditions
for
treatment
monitoring.
Finally,
we
summarise
challenges
associated
single
multimodal
advanced
suggest
possible
solutions
overcome
them.
Advanced Optical Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 17, 2025
Abstract
Liquid
crystal
(LC)
materials,
with
their
supramolecular
self‐assembly
nanostructures
and
stimulus‐responsive
properties,
offer
inherent
advantages
in
the
development
of
advanced
intelligent
functional
materials.
Among
various
LC
phase,
blue
phase
liquid
crystals
(BPs)
are
regarded
as
promising
candidates
for
photonic
due
to
unique
3D
periodic
capability
selectively
reflect
circularly
polarized
light
within
visible
spectrum.
Over
past
decades,
methodologies
developed
synthesize
BP
materials
superior
thermal
stability,
high‐quality
optical
properties
excellent
stimulus‐responsibility,
yielding
significant
research
outcomes
design
application
visual
devices.
Herein,
this
review
summarizes
recent
advancements
BPLCs.
It
comprehensively
covers
structural
characteristics
preparation
methods
crystals,
detailing
findings
optical,
electrical,
mechanical,
humidity‐responsive
well
pivotal
applications
sensors,
devices,
stimulus
response,
anti‐counterfeiting
Finally,
challenges
prospective
directions
novel
soft
matter
material
discussed.
is
anticipated
that
will
provide
valuable
insights
scientists
engineers
interdisciplinary
fields,
including
science,
photonics,
chemistry,
physics,
facilitating
fabrication
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 6, 2025
Conventional
mechanochromic
photonic
crystals
(MPCs)
have
attracted
broad
interest
because
of
their
force-adjustable
reflective
structural
colors,
which
require
three-dimensional
and
nonclose-packing
structures.
Here,
a
new
type
MPC
with
monolayer
close-packing
structures,
brilliant
iridescent
scattering
unconventional
properties
has
been
fabricated
by
self-assembling
ZnS
particles
into
layer
polycrystalline
structures
then
infiltrating
interparticle
gaps
elastic
polyurethane
(PU).
The
light
diffracted
in
the
forward
direction
high
diffraction
efficiency
large
refractive
index
contrast
between
PU
contributes
to
color
saturation.
shows
interesting
colors
red-shifted
blue-shifted
along
perpendicular
stretching
directions,
originating
from
unique
crystal
orientation-dependent
deformation.
This
work
upgrades
basic
understanding
relationship
optical
offers
perspective
for
designing
advanced
stimulus-responsive
materials.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 12, 2025
Abstract
Natural
communication
methods
have
influenced
the
creation
of
sophisticated
artificial
materials
capable
coherent
and
abundant
responses
to
stimuli,
a
crucial
necessity
for
developing
applications
such
as
dynamic
encryption
systems
high‐density
information
storage.
However,
existing
storage
are
limited
by
predictable,
single‐stimulus
lack
capacity
dynamic,
continuous,
programmable
changes.
To
address
this
gap,
bioinspired
multicolor
fluorescent
polyurethane
actuator
is
developed
that
combines
color
shape
adaptability
within
single
material
platform.
This
smart
mimics
turgor‐driven
movements
Oxalis
corniculata
through
hydrophilic/hydrophobic
network
enables
water
diffusion,
hydrogen
bonding,
bond
exchange.
It
responds
multiple
including
temperature,
pH,
excitation
wavelength,
exhibiting
reversible
multi‐state
deformations
fluorescence
across
red,
green,
blue,
even
white
light.
The
deformation
behavior
supported
finite
element
simulations,
ensuring
precise
control
predictability.
Additionally,
tunable
trichromatic
underpins
3D
4D
encoding
system,
demonstrating
increased
security.
employment
micro‐processing
technology
in
fabrication
micro‐hidden
optical
chips
has
been
demonstrated,
thus
paving
way
underwater
technologies
adaptive
materials.
