ACS Nano,
Год журнала:
2024,
Номер
18(26), С. 16895 - 16904
Опубликована: Июнь 21, 2024
Particulate
matter
(PM)
pollution
has
posed
a
serious
threat
to
public
health,
especially
the
global
spread
of
infectious
diseases.
Most
existing
air
filtration
materials
are
still
subjected
compromise
between
removal
efficiency
and
permeability
on
account
their
stacking
bulk
structures.
Here,
we
proposed
self-polarized
assembly
technique
create
two-dimensional
piezoelectric
nanofibrous
webs
(PNWs)
directly
from
polymer
solutions.
The
strategy
involves
droplets
deforming
into
ultrathin
liquid
films
by
inertial
flow,
evolving
web-like
architectures
instantaneous
phase
inversion,
enhanced
dipole
alignment
cluster
electrostatics.
assembled
continuous
exhibit
integrated
structural
superiorities
nanoscale
diameters
(∼20
nm)
internal
fibers
through
pores
(∼100
nm).
Combined
with
wind-driven
electrostatic
property
derived
piezoelectricity,
PNW
filter
shows
high
(99.48%)
low
resistance
(34
Pa)
against
PM0.3
as
well
transparency
(84%),
superlight
weight
(0.7
g
m–2),
long-term
stable
service
life.
This
creation
such
versatile
nanomaterials
may
offer
insight
design
upgrading
high-performance
filters.
Journal of Materials Research and Technology,
Год журнала:
2023,
Номер
23, С. 2852 - 2867
Опубликована: Фев. 4, 2023
In
the
presence
of
sodium
dodecyl
sulphate
in
an
acidic
solution
while
using
ferric
chloride
as
oxidizing
agent,
a
blend
three
conducting
polymers
poly
(ortho-phenylene
diamine)
(PoPDA),
(meta
phenylene
diamine),
and
polypyrrole
was
produced.
ZrO2
nanoparticles
were
prepared
via
sol-gel
method
hybrid
nanocomposite
zirconium
oxide
(TCPB/ZrO2)HNC
synthesized.
Using
Physical
Vapor
Deposition
technology,
thin
film
from
(TCPB/ZrO2)HNC.
Density
functional
theory
(DFT)
also
used
to
develop
optimization
TD-DFTD/Mol3
Cambridge
Serial
Total
Energy
Bundle
(TD-FDT/CASTEP).
By
closely
matching
reported
XRD
Raman
spectra,
TD-DFT
computations
validated
molecular
structure
studied
materials
confirmed
its
structure.
According
calculations,
has
average
crystallite
size
61.67
nm.
The
direct
indirect
optical
energy
bandgaps
for
(TCPB/ZrO2)HNC,
are
2.352
2.253
eV,
respectively.
As
measured
by
TD-DFT/DMol3,
isolated
molecule
(TCPB/ZrO2)
HNC
bandgap
2.415
eV.
properties
suggested
CASTEP
agree
quite
well
with
values
obtained
experimentally.
large
is
advantageous
various
storage
applications.
Polymers,
Год журнала:
2023,
Номер
15(22), С. 4383 - 4383
Опубликована: Ноя. 11, 2023
Since
the
invention
of
triboelectric
nanogenerator
(TENG),
porous
polymer
materials
(PPMs),
with
different
geometries
and
topologies,
have
been
utilized
to
enhance
output
performance
expand
functionality
TENGs.
In
this
review,
basic
characteristics
preparation
methods
various
PPMs
are
introduced,
along
their
applications
in
TENGs
on
basis
roles
as
electrodes,
surfaces,
structural
materials.
According
pore
size
dimensionality,
types
that
built
hydrogels,
aerogels,
foams,
fibrous
media
classified
advantages
disadvantages
analyzed.
To
deepen
understanding
future
development
trend,
intelligent
multifunctional
human–machine
interfaces,
smart
wearable
devices,
self-powering
sensors
introduced.
Finally,
directions
challenges
explored
provide
possible
guidance
TENG-based
devices
systems.
Scientific Reports,
Год журнала:
2023,
Номер
13(1)
Опубликована: Фев. 24, 2023
Abstract
The
current
study
discusses
the
peristaltic
flow
of
Jeffrey
fluid
through
a
porous
wall
channel.
Magnetohydrodynamic
(MHD)
effects
are
also
considered
while
formulating
problem.
Heat
and
mass
transfers
discussed
in
presence
activation
energy
constant
heat
source/sink
effects.
A
chemical
reaction
is
part
analysis.
Lubrication
approach
adopted
for
simplification
resulting
non-linear
equations.
MATHEMATICA
command,
NDSolve,
used
to
discuss
results
graphically
various
parameters
like
Hartman
number
$$(M)$$
(M)
,
porosity
parameter
$$(k)$$
xmlns:mml="http://www.w3.org/1998/Math/MathML">(k)
slip
(
$$\gamma
,{\gamma
}_{1},{\gamma
}_{2}$$
xmlns:mml="http://www.w3.org/1998/Math/MathML">γ,γ1,γ2
),
Schmidt
$$(Sc)$$
xmlns:mml="http://www.w3.org/1998/Math/MathML">(Sc)
Soret
$$(Sr)$$
xmlns:mml="http://www.w3.org/1998/Math/MathML">(Sr)
Prandtl
$$(Pr)$$
xmlns:mml="http://www.w3.org/1998/Math/MathML">(Pr)
numbers,
many
others.
Parabolic
behavior
velocity
sinusoidal
nature
transfer
pressure
gradient
noticed.
Results
indicate
that
greatly
affected
by
varying
values
γ
′
s
)
$$(H)$$
xmlns:mml="http://www.w3.org/1998/Math/MathML">(H)
.
Enhancing
viscoelastic
causes
an
increase
velocity.
Similar
noticed
temperature
profiles.
decreasing
trend
shown
concentration
when
value
ratio
enhanced.
Thus,
presented
analysis
can
be
human
physiological
systems
especially,
blood
flow.
Since
Jeffrey's
exhibits
same
characteristics
as
observed
blood.
Journal of Materials Research and Technology,
Год журнала:
2023,
Номер
25, С. 2797 - 2814
Опубликована: Июнь 8, 2023
This
study
described
a
critical
review
of
the
biological
system
self-curing
agents
and
catalysts
in
which
damage
triggers
an
automatic
healing
response.
In
first
phase,
glass
fiber-reinforced
composite
(GFRC)
mono-leaf
spring
was
prepared,
is
made
fiber
with
cement-based
metal
matrix.
GFRC
further
embedded
microcapsule-based
self-healing
agent
dicyclopentadiene
(DCPD)
that
prevents
sudden
breakdown/failure
automobile
suspension
components
resulting
micro-cracks
produced
material
due
to
constant
load
application.
this
paper,
mono
leaf
samples
were
prepared
without
under
three
different
categories
varying
thicknesses
20,
30,
40
mm.
second
load-carrying
capacity
all
investigated
found
continuous
increase
capacity.
Percentage
carrying
before
time
break
1.09%,
1.42%,
1.08%
followed
by
05
min
24.24%,
17.67%,
21.67%
respectively.
It
clearly
identified
from
results
addition
substituents
increases
avoids
fracture.
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 29, 2025
Maintaining
human
body
temperature
in
both
high
and
low-temperature
environments
is
fundamental
to
survival,
necessitating
high-performance
thermal
insulation
materials
prevent
heat
exchange
with
the
external
environment.
Currently,
most
fibrous
are
characterized
by
large
weight,
suboptimal
insulation,
inferior
mechanical
waterproof
performance,
thereby
limiting
their
effectiveness
providing
protection
for
body.
In
this
study,
lightweight,
waterproof,
mechanically
robust,
insulating
polyamide-imide
(PAI)
grooved
micro/nanofibrous
aerogels
were
efficiently
directly
assembled
electrospinning.
The
prepared
controlling
relative
humidity
solvent
evaporation
rate,
as
well
regulating
charge
jet
density
phase
separation
behavior.
aerogel
exhibited
ultralight
performance
a
of
4.4
mg
cm-3,
hydrophobic
liquid-repelling
contact
angle
137.4°,
ultralow
conductivity
(0.02586
W
m-1
k-1),
making
it
an
ideal
material
maintaining
comfort
complex
environments.
This
work
provides
valuable
insights
into
design
development
fiber
materials.
Journal of Materials Chemistry A,
Год журнала:
2023,
Номер
11(28), С. 15227 - 15236
Опубликована: Янв. 1, 2023
The
universal
passive
radiative
cooling
behavior
of
aerogels
is
revealed
and
their
impact
on
thermal
conductivity-related
insulation
performance
investigated.
