Lighting Engineering & Power Engineering,
Journal Year:
2023,
Volume and Issue:
62(1), P. 23 - 27
Published: April 29, 2023
The
article
analyses
the
methods
of
camouflage
used
in
modern
military
conflicts.
gives
a
historical
overview
equipment
and
personnel
since
beginning
twentieth
century.
mathematical
physical
principles
that
should
be
taken
into
account
manufacture
nets
are
discussed,
requirement
for
which
is
difficulty
recognising
differentiating
between
an
artificial
surface
real
terrain.
model
net
pattern
fractal,
self-similar
scale-invariant
object
noninteger
topological
dimension.
From
point
view
physics,
fractal
dimension
statistical
value
demonstrates
how
densely
fills
space.
This
means,
particular,
by
dividing
photo
cells
then
counting
number
black
relation
to
all
them
(in
simplest
case
winter
forest,
example),
you
can
find
out
average
indicator
landscape's
scale
similarity,
reproduced
on
grid.
In
context
active
operations
caused
russian
aggression,
effective
camouflage,
it
proposed
use
concepts
geometry
particular
nets,
maximise
imitation
natural
landscapes
structures
will
not
easy
recognise.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 15, 2024
Full-spectral
optical
camouflage
is
of
broad
interest
and
in
urgent
demand
because
everlasting
safety
pursuit
modern
society.
However,
the
widely
existing
dim
scenarios
call
for
not
only
broadband
low
thermal
detectivity
but
also
wide-gamut
camouflaging
colors
with
both
lightness
minimal
chromatism.
Here,
a
tape-like
metamaterial
(meta-tape)
spectral
manipulation
bandwidth
from
visible
to
mid-infrared
demonstrated.
The
ultrathin
meta-tapes
can
exhibit
different
wide
gamut
20
40,
enabling
color
difference
under
various
backgrounds
down
1.2
L*a*b*.
infrared
emissivity
simultaneously
suppressed
3.8%
across
3
-
14
µm.
outstanding
performances
are
well
preserved
mechanical
stability
tests.
pronounced
multispectral
camouflage,
combined
flexible
robust
nature,
makes
meta-tape
promising
solution
VIS-IR
compatible
diverse
scenarios.
Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: Dec. 22, 2023
Multifunctional
platforms
that
can
dynamically
modulate
their
color
and
appearance
have
attracted
attention
for
applications
as
varied
displays,
signaling,
camouflage,
anti-counterfeiting,
sensing,
biomedical
imaging,
energy
conservation,
robotics.
Within
this
context,
the
development
of
camouflage
systems
with
tunable
spectroscopic
fluorescent
properties
span
ultraviolet,
visible,
near-infrared
spectral
regions
has
remained
exceedingly
challenging
because
frequently
competing
materials
device
design
requirements.
Herein,
we
draw
inspiration
from
unique
blue
rings
Hapalochlaena
lunulata
octopus
deception
signaling
resolve
these
critical
challenges.
As
active
material,
our
actuator-type
incorporate
a
readily-prepared
easily-processable
nonacene-like
molecule
an
ambient-atmosphere
stability
exceeds
state-of-the-art
comparable
acenes
by
orders
magnitude.
Devices
material
feature
powerful
combination
advantages,
including
straightforward
benchtop
fabrication,
competitive
baseline
performance
metrics,
robustness
during
cycling
capacity
autonomous
self-repair,
multiple
dynamic
multispectral
operating
modes.
When
considered
together,
described
exciting
discoveries
point
to
new
scientific
technological
opportunities
in
areas
functional
organic
materials,
reconfigurable
soft
actuators,
adaptive
photonic
systems.
ACS Nano,
Journal Year:
2024,
Volume and Issue:
18(36), P. 24741 - 24769
Published: Aug. 23, 2024
The
manipulation
of
interactions
between
light
and
matter
plays
a
crucial
role
in
the
evolution
organisms
better
life
for
humans.
As
result
natural
selection,
precise
light-regulatory
systems
biology
have
been
engineered
that
provide
many
powerful
promising
bioinspired
strategies.
"king
disguise",
cephalopods,
which
can
perfectly
control
propagation
thus
achieve
excellent
surrounding-matching
via
their
delicate
skin
structure,
made
themselves
an
exciting
source
inspiration
developing
optical
thermal
regulation
nanomaterials.
This
review
presents
cutting-edge
advancements
cephalopod-inspired
nanomaterials,
highlighting
key
milestones
breakthroughs
achieved
far.
We
begin
with
underlying
mechanisms
adaptive
color-changing
ability
as
well
special
hierarchical
structure.
Then,
different
types
nanomaterials
devices
are
comprehensively
summarized.
Furthermore,
some
advanced
emerging
applications
these
devices,
including
camouflage,
management,
pixelation,
medical
health,
sensing
wireless
communication,
addressed.
Finally,
remaining
but
significant
challenges
potential
directions
future
work
discussed.
anticipate
this
comprehensive
will
promote
further
development
trigger
ideas
design
multidisciplinary
applications.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: Oct. 18, 2024
Crystals
can
be
found
in
many
shapes
but
do
not
usually
grow
as
spirals.
Here
we
show
that
applying
a
non-uniform
layer
of
polymer
blend
onto
slender
centimeter-size
organic
crystals
prestrains
the
into
hybrid
dynamic
elements
with
spiral
respond
reversibly
to
environmental
variations
temperature
or
humidity
by
curling.
Exposure
results
partial
uncurling
within
several
seconds,
whereby
logarithmic-type
crystal
is
transformed
an
Archimedean
one.
Conical
helices
obtained
lateral
pulling
spirals
wind
around
solid
objects
similar
plant
tendrils
lift
suspended
positive
correlation
between
actuator's
elongation
and
cargo
mass.
The
morphological,
kinematic,
kinetic
attributes
turn
these
materials
attractive
platform
for
flexible
sensors
soft
robots,
while
they
also
provide
approach
morph
crystalline
fibers
non-natural
habits
inaccessible
common
crystallization
approaches.
growth
unusual
this
morphology
applied
development
robots
when
external
stimuli.
Here,
authors
report
incorporation
produce
having
variations.
ChemistrySelect,
Journal Year:
2023,
Volume and Issue:
8(48)
Published: Dec. 19, 2023
Abstract
In
this
paper,
a
new
electrochromic
copolymer
containing
6,9‐bis(2,3‐dihydrothieno[3,4‐b][1,4]dioxin‐5‐yl)‐1,2,3,4‐tetrahydrophenazine
(EBE)
and
4‐(9‐benzyl‐9H‐carbazol‐3‐yl)‐7‐(thiophen‐2‐yl)benzo[c][1,2,5]thiadiazole
(CBT)
in
the
main
chain
was
reported.
The
homopolymers,
(Poly(EBE)
Poly(CBT)),
were
also
prepared
via
electrochemical
polymerization
their
electrochemical,
spectroelectrochemical
properties
analyzed
order
to
compare
with
those
of
(Poly(EBE‐co‐CBT)).
exhibited
good
switching
property
for
military
camouflage
necessities
color
change
from
hues
brown
green.
Furthermore,
it
has
been
tried
analyze
effects
combination
two
donor‐acceptor‐donor
(DAD)
type
monomers
different
symmetries
on
properties.
Small Methods,
Journal Year:
2024,
Volume and Issue:
unknown
Published: May 6, 2024
Abstract
Artificial
optical
patterns
bring
wide
benefits
in
applications
like
structural
color
display,
photonic
camouflage,
and
electromagnetic
cloak.
Their
scalable
coating
on
large‐scale
objects
will
greatly
enrich
the
multimodal‐interactive
society.
Here,
a
droplet‐pen
writing
(DPW)
method
to
directly
write
multi‐spectral
of
thin‐film
graphene
is
reported.
By
amphiphilicity
regulations
2D
nanosheets,
ultra‐uniform
ultrathin
films
can
spontaneously
form
droplet
caps
pave
substrate,
thus
inducing
interference.
This
allows
on‐surface
patterning
by
pen
droplets.
Specifically,
drop‐on‐demand
thin
are
achieved
with
millimeter
lateral
size
uniformity
up
97%
subwavelength
thickness
(<100
nm),
corresponding
an
aspect
ratio
over
30
000.
The
pixelated
disks
lines
8‐inch
wafer
scale
demonstrated,
which
enable
low‐emittance
paintings.
Furthermore,
these
for
dual‐band
camouflage
infrared‐to‐visible
encryption
investigated.
study
highlights
potential
material
self‐assembly
preparation
application
film‐based
patterns.
