Nano-Micro Letters,
Год журнала:
2024,
Номер
16(1)
Опубликована: Янв. 4, 2024
Abstract
Nanofiber
membranes
(NFMs)
have
become
attractive
candidates
for
next-generation
flexible
transparent
materials
due
to
their
exceptional
flexibility
and
breathability.
However,
improving
the
transmittance
of
NFMs
is
a
great
challenge
enormous
reflection
incredibly
poor
transmission
generated
by
nanofiber-air
interface.
In
this
research,
we
report
general
strategy
preparation
temperature-responsive
(TRT)
membranes,
which
achieves
rapid
transformation
from
opaque
highly
under
narrow
temperature
window.
process,
phase
change
material
eicosane
coated
on
surface
polyurethane
nanofibers
electrospray
technology.
When
rises
37
°C,
rapidly
completes
transition
establishes
light
path
between
nanofibers,
preventing
loss
at
The
resulting
TRT
membrane
exhibits
high
(>
90%),
fast
response
(5
s).
This
study
first
NFMs,
offering
building
nanofiber
materials,
shaping
future
intelligent
monitoring,
anti-counterfeiting
measures,
other
high-performance
devices.
Flexible
electrochromic
devices
(FECDs)
are
widely
explored
for
diverse
applications
including
wearable
electronics,
camouflage,
and
smart
windows.
However,
the
manufacturing
process
of
patterned
FECDs
remains
complex,
costly,
non-customizable.
To
address
this
challenge,
a
strategy
is
proposed
to
prepare
integrated
via
multi-material
direct
writing
3D
printing.
By
designing
novel
viologen/polyvinyl
alcohol
(PVA)
hydrogel
inks
systematically
evaluating
printability
various
inks,
seamless
interface
integration
can
be
achieved,
enabling
streamlined
with
continuous
production
capabilities.
The
resultant
3D-printed
exhibit
excellent
mechanical
properties,
high
optical
contrast
(up
54%
at
360
nm),
nice
cycling
stability
(less
than
5%
electroactivity
reduction
after
10
000
s),
19%
optimal
decrease
5000
cycles
bending).
potential
these
hydrogel-based
further
demonstrated
in
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(38)
Опубликована: Апрель 3, 2024
Abstract
Photochromic
smart
windows
have
drawn
increasing
attention
as
an
approach
to
improve
building
energy
efficiency
and
enhance
indoor
daylight
comfort.
However,
existing
photochromic
still
block
sunlight
from
entering
the
room
on
sunny
winter
days,
causing
additional
consumption
for
heating.
Herein,
a
dual‐mode
window
is
designed
with
decoupled
photo
thermal
functions
by
combining
colorless
Fe‐doped
WO
3
film
rotation.
Based
this,
selective
heating
cooling
of
between
summer
achieved
while
maintaining
comfort
benefits
during
all
seasons.
As
proof
concept,
reduces
temperature
model
house
up
7.9
°C
in
mode,
mode
only
reduced
0.7
°C.
The
proposed
seasonally
adaptive
obtains
rotation
overcomes
limitations
conventional
windows,
which
not
achieves
better
but
also
retains
improved
Furthermore,
it
demonstrates
that
heat
absorbed
can
be
harnessed
produce
electricity
through
integration
thermoelectric
modules
within
glazing,
enhances
its
impact
reducing
consumption.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2024,
Номер
12(14), С. 5459 - 5467
Опубликована: Март 29, 2024
The
dual-band
electrochromic
smart
windows
(DESW)
can
selectively
modulate
visible
(VIS)
and
near-infrared
(NIR)
transmittance,
which
is
expected
to
effectively
reduce
building
energy
consumption.
However,
the
complex
preparation
of
materials
has
restricted
further
development
DESW.
In
this
work,
amorphous
crystalline
Ti-doped
WO3·2H2O
(TiWH)
were
synthesized
by
a
simple
precipitation
method,
does
not
require
strict
control
oxygen
content
temperature.
Ti
doping
reduced
crystallinity
increased
specific
surface
area.
3%
TiWH
films
exhibited
excellent
electrochromism
with
high
transmittance
modulation
(633
nm:
83.8%,
1050
72.5%),
fast
response
time
(bleached/colored
time:
14.9/15.3
s
at
633
nm,
16.0/3.5
nm),
good
coloration
efficiency
22.8
cm2
C–1,
90.8
C–1),
capacitance
47.1
mF
cm–2
0.1
mA
cm–2.
device
still
maintain
(bright,
cool,
dark
modes).
storage
make
have
application
prospect
in
green
buildings.
ACS Energy Letters,
Год журнала:
2024,
Номер
9(2), С. 594 - 626
Опубликована: Янв. 29, 2024
Radiative
cooling
cools
by
radiating
heat
toward
outer
space.
Evaporative
dispatching
the
latent
of
water
via
evaporation.
These
two
types
operate
without
additional
pollutant
generation.
Hydrogel
is
one
substance
that
can
combine
above
strategies
and
thus
holds
high
promise
to
facilitate
construction
a
carbon
neutral
society.
This
review
article
first
documents
basic
principles
related
passive
cooling,
evaporative
transfer,
light
modulation.
Then,
general
considerations
for
hydrogel-based
materials
are
summarized.
Third,
stimuli-responsive
systems
systematically
discussed
from
aspects
operation
mechanisms
as
well
material
selections.
Lastly,
typical
applications
radiative
and/or
in
buildings,
electronic
devices,
wearable
devices
discussed.
Challenges
further
development
ending
remarks.
Light Science & Applications,
Год журнала:
2024,
Номер
13(1)
Опубликована: Авг. 21, 2024
Thermochromic
hydrogels
exhibit
a
smart
capacity
for
regulating
solar
spectrum
transmission,
enabling
automatically
change
their
transmissivity
in
response
to
the
ambient
temperature
change.
This
has
great
importance
energy
conservation
purposes.
Military
and
civilian
emergency
thermochromic
applications
require
rapid
visible-light
stealth
(VLS);
however,
concurrent
transmission
VLS
is
yet
be
realized.
Inspired
by
squid-skin,
we
propose
micropatterned
hydrogel
(MTH)
realize
control
of
transmittance
at
all-working
temperatures.
The
MTH
possesses
two
optical
regulation
mechanisms:
property
scattering,
controlled
pressure,
respectively.
introduced
surface
micropattern
strategy
can
arbitrarily
switch
between
normal
diffuse
time
within
1
s
compared
with
previous
~180
s.
also
high
solar-transmission
range
61%.
Further,
preparation
method
scalable
cost-effective.
novel
mechanism
opens
new
pathway
towards
multifunctional
requirements.
