Nanophotonics,
Journal Year:
2024,
Volume and Issue:
13(24), P. 4491 - 4503
Published: Oct. 29, 2024
Structural
colors,
resulting
from
the
interaction
of
light
with
nanostructured
materials
rather
than
pigments,
present
a
promising
avenue
for
diverse
applications
ranging
ink-free
printing
to
optical
anti-counterfeiting.
Achieving
structural
colors
high
purity
and
brightness
over
large
areas
at
low
costs
is
beneficial
many
practical
applications,
but
still
remains
challenge
current
designs.
Here,
we
introduce
novel
approach
realizing
large-scale
in
layered
thin
film
structures
that
are
characterized
by
both
purity.
Unlike
conventional
designs
relying
on
single
Fabry-Pérot
cavity
resonance,
our
method
leverages
coupled
resonance
between
adjacent
cavities
achieve
sharp
intense
transmission
peaks
significantly
suppressed
sideband
intensity.
We
demonstrate
this
designing
experimentally
validating
transmission-type
red,
green,
blue
using
an
Ag/SiO
Small Methods,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 31, 2024
Abstract
A
full‐color
colorimetric
humidity
sensor
with
high
brightness
is
proposed
by
using
a
hetero‐structured
dielectric
film
in
metal‐insulator‐metal
(MIM)
resonator.
humidity‐responsive
polymer
designed
to
graft
on
top
of
metal‐organic
frameworks
(MOFs)
thin
(MOFs‐Polymer)
as
insulator
layer
the
Programmable
tuning
reflected
color
achieved
controlling
thicknesses,
and
finite
difference
time
domain
simulation
light‐matter
interactions
at
subwavelength
scales
proves
dependence
wavelength
thickness
Vivid
changing
realized
during
tracking
process
due
swelling
stimuli‐responsive
polymer.
Ultrafast
response
(≈0.75
s)
for
trace
H
2
O
from
O/methanol
mixture,
which
≈10
4
faster
than
that
pure
polymer‐based
MIM
Meanwhile,
study
observes
significant
spectral
redshift
because
porous
MOFs
facilitates
preconcentration
external
stimulus
improves
detection
sensitivity
Further,
double‐channel
anti‐counterfeiting
multiplexing
imaging
devised
resonator
photomask
technology.
Patterned
encoding
security
label
engineering
humidity‐tunable
pixels
Au/MOFs‐Polymer/Au
humidity‐invalid
Au/MOFs/Au.
Advanced Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 17, 2024
Abstract
Hydrogel
nanophotonic
devices
exhibit
attractive
tunable
capabilities
in
structural
coloration
and
optical
display.
However,
current
hydrogel‐based
strategies
are
mostly
based
on
a
single
physical
mechanism,
it
remains
challenge
to
merge
multiple
mechanisms
for
active
with
integrated
functionalities.
Here,
hydrogel
metagrating
combining
Fabry‐Pérot
(FP)
resonance
diffraction
effects
is
proposed
achieving
absorption
dynamic
wavelength‐selective
beam
steering.
Through
exploiting
shrinkage
under
electron‐beam
exposure,
nanocavity
composed
of
Ag/Hydrogel/Ag
three‐layer
films
can
be
directly
printed
arbitrary
patterns,
enabling
the
direct‐pattering
technique
metagrating.
The
performs
as
an
FP‐type
absorber,
its
peak
rapidly
shifts
humidity
variation
due
layer
scaling.
response
speed
<320
ms,
shift
range
>150
nm.
It
further
demonstrated
that
exclusively
deflects
light
at
wavelength,
operating
wavelength
actively
switched
by
regulating
ambient
humidity.
promote
new
technologies
metasurfaces
filtering,
gas
sensing,
imaging.
Nanophotonics,
Journal Year:
2024,
Volume and Issue:
13(24), P. 4491 - 4503
Published: Oct. 29, 2024
Structural
colors,
resulting
from
the
interaction
of
light
with
nanostructured
materials
rather
than
pigments,
present
a
promising
avenue
for
diverse
applications
ranging
ink-free
printing
to
optical
anti-counterfeiting.
Achieving
structural
colors
high
purity
and
brightness
over
large
areas
at
low
costs
is
beneficial
many
practical
applications,
but
still
remains
challenge
current
designs.
Here,
we
introduce
novel
approach
realizing
large-scale
in
layered
thin
film
structures
that
are
characterized
by
both
purity.
Unlike
conventional
designs
relying
on
single
Fabry-Pérot
cavity
resonance,
our
method
leverages
coupled
resonance
between
adjacent
cavities
achieve
sharp
intense
transmission
peaks
significantly
suppressed
sideband
intensity.
We
demonstrate
this
designing
experimentally
validating
transmission-type
red,
green,
blue
using
an
Ag/SiO
