The
development
of
polymer
radiative
coolers
with
easy
processing,
low
cost,
and
high
inherent
emissivity
has
significantly
promoted
the
industrialization
process
passive
daytime
cooling.
For
excellent
outdoor
durability,
however,
traditional
strategy
using
UV
absorbers
inevitably
weakens
cooling
performance
polymer-based
coolers.
introduction
a
UV-reflective
layer
been
proven
to
be
most
effective
eliminate
negative
effects
absorption
improve
durability
Here,
multilayer
film
(PMF)
based
on
an
optical
interference
mechanism
is
designed,
which
exhibits
average
reflectance
up
92.3%
in
300-400
nm
wavebands.
Using
TiO
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 5, 2024
Abstract
Passive
radiative
cooling
is
a
promising
technology
that
can
achieve
high‐efficient
by
reflecting
solar
radiation
while
simultaneously
emitting
heat
without
consuming
energy.
However,
to
precisely
construct
the
microstructure
of
materials
crucial
maximize
their
performance.
Herein,
self‐cleaning
and
anticorrosive
3D
silica
microsphere@boron
nitride
nanosheets
core–shell
hierarchical
structure
(SiO
2
@BNNSs)
stacked
coating
fabricated
on
surface
aluminum
oxide
substrate.
The
cooperative
integration
prominently
sunlight
reflective
BNNSs
highly
selective
infrared
emissive
SiO
microspheres,
combined
with
scattering
brought
interconnecting
configuration,
results
in
an
outstanding
reflectance
0.84
mid‐infrared
emittance
0.82
for
@BNNS
coating.
These
features
enable
exhibit
excellent
passive
performances
high
temperature
drop
≈17.5
°C
sunny
day
≈8.1
overcast
day,
respectively.
More
importantly,
also
exhibits
performance
corrosion
resistance
both
acidic
alkaline
conditions,
ensuring
preeminent
stability
over
long
time
various
practical
applications.
This
work
demonstrates
hybridization
reflection,
scattering,
different
through
reasonable
design
cooling,
offering
prospect
energy‐saving
technology.
ACS Photonics,
Journal Year:
2024,
Volume and Issue:
12(1), P. 528 - 536
Published: Dec. 26, 2024
The
greenhouse
effect
exacerbates
plant
heat
stress,
which
poses
a
serious
threat
to
global
food
production
and
atmospheric
cycling.
Spectrally
selective
radiative
cooling
films
have
been
proven
great
potential
in
alleviating
stress.
However,
their
high
cost
slow
speeds
due
vacuum-based
fabrication
techniques
hindered
widespread
application.
Here,
we
propose
strategy
reduce
stress
by
using
polymer
multilayer
film.
This
film
consists
of
two
spectrally
stacks
emitter.
selectively
transmit
photosynthetically
active
radiation
(52%
for
wavelengths
0.4–0.48
μm
85%
0.6–0.7
μm)
boost
photosynthesis,
the
emitter
has
infrared
emissivity
achieve
excellent
performance.
Field
experiments
indicated
that
this
reduces
air
temperature
2.3–5.0
°C
at
3
cm
below
soil
surface
2.1–4.1
°C,
decreasing
water
evaporation
11.2–32.4%.
Consequently,
biomass
yield
increases
21.1–195.9%.
Furthermore,
prepared
coextrusion
advantages
low
cost,
fast
processing
speed,
rich
variety
candidate
materials,
simple
structure.
work
accelerates
process
large-scale
practical
application
passive
technology
promoting
growth.
Nano Letters,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 21, 2024
Cerate
nanoceramics
have
been
recently
considered
to
be
key
materials
for
radiative
thermal
management
and
enhanced
solar
reflectance.
Herein,
we
demonstrate
by
means
of
first-principles
density
functional
theory
calculations
how
experimentally
prepared
La
The
development
of
polymer
radiative
coolers
with
easy
processing,
low
cost,
and
high
inherent
emissivity
has
significantly
promoted
the
industrialization
process
passive
daytime
cooling.
For
excellent
outdoor
durability,
however,
traditional
strategy
using
UV
absorbers
inevitably
weakens
cooling
performance
polymer-based
coolers.
introduction
a
UV-reflective
layer
been
proven
to
be
most
effective
eliminate
negative
effects
absorption
improve
durability
Here,
multilayer
film
(PMF)
based
on
an
optical
interference
mechanism
is
designed,
which
exhibits
average
reflectance
up
92.3%
in
300-400
nm
wavebands.
Using
TiO
