Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
33(23)
Published: Feb. 28, 2023
Abstract
Structural
colorful
cholesterics
show
impressive
susceptibility
to
external
stimulation,
leading
applications
in
electro/mechano‐chromic
devices.
However,
out‐of‐plane
actuation
of
structural
actuators
based
on
and
the
integration
with
other
stimulation
remains
underdeveloped.
Herein,
motile
humidity
sensors
are
developed
using
humidity‐responsive
cholesteric
liquid
crystal
networks
(CLCNs)
magnetic
composites.
The
actuator
can
exhibit
synergistic
shape
morphing
color
change
response
humidity,
CLCNs
as
artificial
muscles.
Through
control,
sensor
be
navigated
open
confined
spaces
aid
friction
detect
local
relative
humidity.
multi‐stimulation
will
expand
research
frontier
for
spaces.
Advanced Materials Technologies,
Journal Year:
2022,
Volume and Issue:
7(8)
Published: April 3, 2022
Abstract
With
the
development
of
bionics
and
nanophotonics,
hydrogel
microactuators
capable
responding
to
external
stimuli
produce
controllable
deformations
have
attracted
a
great
deal
interest.
These
hold
significant
promise
in
areas
such
as
bionic
devices,
soft
robotics,
precision
sensors.
It
is
not
trivial
task
make
small
devices
well
them
work
controlled
manner.
Here,
inspired
by
intelligent
response
flytrap,
smart
microactuator
based
on
asymmetric
structure
demonstrated.
The
designed
microstructure
fabricated
femtosecond
laser
direct
writing
with
deformation
time
1.2
s
recovery
0.3
s.
grasping
releasing
behavior
for
micro‐objects
can
be
realized
tuned
using
pH‐triggered
shape
changes,
demonstrating
its
potential
applications,
flexible
sensors,
microscopic
manipulation.
ACS Nano,
Journal Year:
2022,
Volume and Issue:
16(5), P. 8244 - 8252
Published: May 9, 2022
It
remains
a
challenge
to
directly
print
arbitrary
three-dimensional
shapes
that
exhibit
structural
colors
at
the
micrometer
scale.
Woodpile
photonic
crystals
(WPCs)
fabricated
via
two-photon
lithography
(TPL)
are
elementary
building
blocks
produce
3D
geometries
generate
due
their
ability
either
omnidirectional
or
anisotropic
stop
bands.
However,
existing
approaches
on
WPCs
when
illuminating
from
top,
requiring
resolutions
beyond
limit
of
commercial
TPL,
which
necessitates
postprocessing
techniques.
Here,
we
devised
strategy
support
high-order
cavity
modes
upon
side
illumination
surprisingly
prominent
reflectance
peaks
in
visible
spectrum.
Based
that,
demonstrate
one-step
printing
without
subwavelength
features.
Vivid
with
exhibiting
full
width
half-maximum
∼25
nm,
maximum
50%,
gamut
∼85%
sRGB,
and
large
viewing
angles
were
achieved.
In
addition,
also
demonstrated
voxel-level
manipulation
control
arbitrary-shaped
objects
constituted
as
unit
cells,
has
potential
for
applications
dynamic
color
displays,
colorimetric
sensing,
anti-counterfeiting,
light-matter
interaction
platforms.
Journal of the American Chemical Society,
Journal Year:
2023,
Volume and Issue:
145(5), P. 3064 - 3074
Published: Jan. 10, 2023
Lithographic
patterning,
which
utilizes
the
solubility
switch
of
photoresists
to
convert
optical
signals
into
nanostructures
on
substrate,
is
primary
top-down
approach
for
nanoscale
fabrication.
However,
low
light/electron-energy
conversion
efficiency
severely
limits
throughput
lithography.
Thiol-ene
reaction,
as
a
photoinitiated
radical
addition
widely
known
click
reaction
in
field
chemistry
due
its
extremely
high
efficiency.
Here,
we
introduce
lithography
strategy
utilizing
rapid
thiol-ene
realize
ultraefficient
nanofabrication.
This
novel
facilitated
by
implementation
ultrahigh-functionality
material
designs
enables
high-contrast
patterning
metal-containing
nanoclusters
under
an
deep-ultraviolet
exposure
dose,
e.g.,
7.5
mJ
cm-2,
10-20
times
lower
than
dose
used
photoacid
generator-based
photoresist
system.
Meanwhile,
45
nm
dense
patterns
were
also
achieved
at
using
electron
beam
lithography,
revealing
great
potential
this
high-resolution
patterning.
Our
results
demonstrated
high-sensitivity
and
features
providing
inspiration
future
design.
Advanced Science,
Journal Year:
2023,
Volume and Issue:
10(24)
Published: June 17, 2023
Inspired
by
the
brilliant
and
tunable
structural
colors
based
on
large
refractive
index
contrast
(Δn)
non-close-packing
structures
of
chameleon
skins,
ZnS-silica
photonic
crystals
(PCs)
with
highly
saturated
adjustable
are
fabricated.
Due
to
Δn
structure,
PCs
show
1)
intense
reflectance
(maximal:
90%),
wide
bandgaps,
peak
areas,
2.6-7.6,
1.6,
4.0
times
higher
than
those
silica
PCs,
respectively;
2)
simply
adjusting
volume
fraction
particles
same
size,
more
convenient
conventional
way
altering
particle
sizes;
3)
a
relatively
low
threshold
PC's
thickness
(57
µm)
possessing
maximal
compared
that
(>200
PCs.
Benefiting
from
core-shell
structure
particles,
various
derived
superstructures
fabricated
co-assembling
into
or
selectively
etching
ZnS
ZnS-silica/silica
A
new
information
encryption
technique
is
developed
unique
reversible
"disorder-order"
switch
water-responsive
superstructures.
Additionally,
ideal
candidates
for
enhancing
fluorescence
(approximately
tenfold),
approximately
six
PC.
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
33(23)
Published: Feb. 28, 2023
Abstract
Structural
colorful
cholesterics
show
impressive
susceptibility
to
external
stimulation,
leading
applications
in
electro/mechano‐chromic
devices.
However,
out‐of‐plane
actuation
of
structural
actuators
based
on
and
the
integration
with
other
stimulation
remains
underdeveloped.
Herein,
motile
humidity
sensors
are
developed
using
humidity‐responsive
cholesteric
liquid
crystal
networks
(CLCNs)
magnetic
composites.
The
actuator
can
exhibit
synergistic
shape
morphing
color
change
response
humidity,
CLCNs
as
artificial
muscles.
Through
control,
sensor
be
navigated
open
confined
spaces
aid
friction
detect
local
relative
humidity.
multi‐stimulation
will
expand
research
frontier
for
spaces.
