Advanced Functional Materials,
Journal Year:
2022,
Volume and Issue:
32(44)
Published: Aug. 19, 2022
Abstract
With
the
aggravation
of
global
warming
and
extreme
weather,
cooling
demand
has
witnessed
a
continuous
increase
is
expected
to
tenfold
by
2050.
Radiative
sky
(RSC)
without
any
pollution
energy
consumption
drawn
worldwide
attention
in
past
few
years.
Large‐scale
scalable
porous
materials
have
greatly
advanced
progress
this
technology.
Herein,
critical
review
on
with
goal
advancing
their
commercial
applications
presented.
The
detailed
design
principles
daytime
radiative
are
first
discussed
clarify
factors
structures
for
great
performance.
What
follows
discussions
from
pore‐forming
methods.
Subsequently,
recent
promising
particle‐embedding
structures,
mainly
including
white
colorful
coolers
various
applications,
outlined.
Additionally,
some
special
highlighted
further
broaden
RSC
Last
but
not
least,
remaining
open
challenges
insights
presented
advance
commercialization
progress.
Science,
Journal Year:
2020,
Volume and Issue:
370(6518), P. 786 - 791
Published: Nov. 13, 2020
Photonic
materials
designed
at
wavelength
scales
have
enabled
a
range
of
emerging
energy
technologies,
from
solid-state
lighting
to
efficient
photovoltaics
that
transformed
global
landscapes.
Daytime
passive
radiative
cooling
shed
heat
the
ground
cold
universe
by
taking
advantage
terrestrial
thermal
radiation
is
as
large
renewable
solar
energy.
Newly
developed
photonic
permit
subambient
under
direct
sunshine,
and
their
applications
are
expanding
rapidly
scalable
manufacturing.
We
review
here
recent
advancement
daytime
materials,
which
allow
energy-efficient
paving
way
toward
technologies
harvest
coldness
new
source.
Nature Communications,
Journal Year:
2021,
Volume and Issue:
12(1)
Published: Jan. 14, 2021
Abstract
All-day
passive
radiative
cooling
has
recently
attracted
tremendous
interest
by
reflecting
sunlight
and
radiating
heat
to
the
ultracold
outer
space.
While
some
progress
been
made,
it
still
remains
big
challenge
in
fabricating
highly
efficient
low-cost
coolers
for
all-day
all-climates.
Herein,
we
report
a
hierarchically
structured
polymethyl
methacrylate
(PMMA)
film
with
micropore
array
combined
random
nanopores
day-
nighttime
cooling.
This
porous
PMMA
exhibits
sufficiently
high
solar
reflectance
(0.95)
superior
longwave
infrared
thermal
emittance
(0.98)
realizes
subambient
of
~8.2
°C
during
night
~6.0
~8.9
midday
an
average
power
~85
W/m
2
under
intensity
~900
,
promisingly
~5.5
even
~930
relative
humidity
~64%
hot
moist
climate.
The
micropores
polymer
play
crucial
roles
enhancing
emittance.
Proceedings of the National Academy of Sciences,
Journal Year:
2020,
Volume and Issue:
117(26), P. 14657 - 14666
Published: June 15, 2020
Temperature
is
a
fundamental
parameter
for
all
forms
of
lives.
Natural
evolution
has
resulted
in
organisms
which
have
excellent
thermoregulation
capabilities
extreme
climates.
Bioinspired
materials
that
mimic
biological
solution
proven
promising
passive
radiative
cooling.
However,
scalable
production
artificial
photonic
radiators
with
complex
structures,
outstanding
properties,
high
throughput,
and
low
cost
still
challenging.
Herein,
we
design
demonstrate
biologically
inspired
cooling,
after
discovery
longicorn
beetles'
thermoregulatory
function
their
dual-scale
fluffs.
The
natural
fluffs
exhibit
finely
structured
triangular
cross-section
two
effects
effectively
reflects
sunlight
emits
thermal
radiation,
thereby
decreasing
the
body
temperature.
Inspired
by
finding,
film
consisting
micropyramid-arrayed
polymer
matrix
random
ceramic
particles
fabricated
throughput.
∼95%
solar
irradiance
exhibits
an
infrared
emissivity
>0.96.
effective
cooling
power
found
to
be
∼90.8
W⋅m-2
temperature
decrease
up
5.1
°C
recorded
under
direct
sunlight.
Additionally,
hydrophobicity,
superior
flexibility,
strong
mechanical
strength,
management
various
electronic
devices
wearable
products.
Our
work
paves
way
designing
fabrication
high-performance
regulation
materials.
Advanced Materials,
Journal Year:
2021,
Volume and Issue:
33(14)
Published: Feb. 24, 2021
Abstract
Infrared
(IR)
adaptation
phenomena
are
ubiquitous
in
nature
and
biological
systems.
Taking
inspiration
from
natural
creatures,
researchers
have
devoted
extensive
efforts
for
developing
advanced
IR
adaptive
materials
exploring
their
applications
areas
of
smart
camouflage,
thermal
energy
management,
biomedical
science,
many
other
IR‐related
technological
fields.
Herein,
an
up‐to‐date
review
is
provided
on
the
recent
advancements
bioinspired
promising
applications.
First
overview
artificial
technologies
presented.
Recent
endeavors
then
introduced
toward
camouflage
radiative
cooling.
According
to
Stefan‐Boltzmann
law,
can
be
realized
by
either
emissivity
engineering
or
cloaks.
cooling
maximize
radiation
object
through
atmospheric
transparency
window,
thus
holds
great
potential
use
energy‐efficient
green
buildings
personal
management
advances
emerging
near‐IR
(NIR)
also
discussed,
including
NIR‐triggered
technologies,
NIR
light‐fueled
soft
robotics,
light‐driven
supramolecular
nanosystems.
This
concludes
with
a
perspective
challenges
opportunities
future
development
materials.
Advanced Functional Materials,
Journal Year:
2021,
Volume and Issue:
32(5)
Published: Oct. 20, 2021
Abstract
Radiative
cooling
is
a
promising
passive
technology
that
reflects
sunlight
and
emits
heat
to
deep
space
without
any
energy
consumption.
Current
research
mainly
focuses
on
non‐heat‐generating
objects
(e.g.,
water)
subambient
temperature
under
sunlight.
Toward
real‐world
applications,
however,
outdoor
generate
tremendous
have
higher
than
ambient
communication
base
stations
data
centres)
remains
challenge.
Herein,
scalable
photonic
film
prepared
by
introducing
2D
dielectric
nanoplates
with
high
backward
scattering
efficiency
into
polymer
using
simulation
aided
thermo‐optical
design.
It
demonstrated
the
can
break
trade‐off
between
optical
reflection
thermal
dissipation
of
conventional
radiative
coolers.
The
exhibits
superior
solar
reflectance
(98%)
has
stronger
ability
compared
matrix.
≈4
°C
performance
direct
≈9
at
night.
Moreover,
it
also
demonstrates
remarkable
above‐ambient
reducing
underlying
heater
≈18
in
comparison
traditional
polymers
reported
here
provide
an
innovative
strategy
for
applications
related
light
management
beyond
cooling.
Nano Letters,
Journal Year:
2020,
Volume and Issue:
21(1), P. 397 - 404
Published: Dec. 10, 2020
Structural
materials
with
excellent
mechanical
properties
are
vitally
important
for
architectural
application.
However,
the
traditional
structural
complex
manufacturing
processes
cannot
effectively
regulate
heat
flow,
causing
a
large
impact
on
global
energy
consumption.
Here,
we
processed
high-performance
and
inexpensive
cooling
material
by
bottom-up
assembling
delignified
biomass
cellulose
fiber
inorganic
microspheres
into
3D
network
bulk
followed
hot-pressing
process;
constructed
lignocellulosic
that
exhibits
strong
strength
more
than
eight
times
of
pure
wood
greater
specific
majority
materials.
The
acts
as
photonic
solar
reflector
thermal
emitter,
enabling
can
accomplish
24-h
continuous
an
average
dT
6
8
°C
during
day
night,
respectively.
Combined
fire-retardant
outdoor
antibacterial
performance,
it
will
pave
way
design
ACS Nano,
Journal Year:
2021,
Volume and Issue:
15(6), P. 10076 - 10083
Published: May 20, 2021
Daytime
passive
radiative
cooling
is
a
promising
electricity-free
pathway
for
terrestrial
buildings.
Current
research
interest
in
this
strategy
mainly
lies
tailoring
the
optical
spectra
of
materials
strong
thermal
emission
and
high
solar
reflection.
However,
environmental
heat
gain
poses
crucial
challenge
to
building
at
subambient
temperatures.
Herein,
we
devise
scalable
insulating
cooler
(TIC)
consisting
hierarchically
hollow
microfibers
as
envelope
that
simultaneously
achieves
daytime
insulation
reduce
gain.
The
TIC
demonstrates
efficient
reflection
(94%)
long-wave
infrared
(94%),
yielding
temperature
drop
about
9
°C
under
sunlight
900
W/m2.
Notably,
conductivity
lower
than
air,
thus
preventing
flow
from
external
environments
indoor
space
summer,
an
additional
benefit
does
not
sacrifice
performance.
A
energy
simulation
shows
48.5%
could
be
saved
if
widely
deployed
China.
