Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: Dec. 28, 2024
The
study
explore
machine
learning
(ML)
techniques
to
predict
temperature-dependent
photoluminescence
(PL)
spectra
in
colloidal
CdSe
nanoplatelets
(NPLs),
leveraging
polynomial
regression
models
trained
on
experimental
data
from
85
270
K
spanning
temperatures
forecast
PL
backward
0
and
forward
300
K.
6th-degree
with
Tweedie
were
optimal
for
band
energy
(
$$B_1$$
)
predictions
up
K,
while
9th-degree
LassoLars
Linear
Regression
regressors
suitable
For
exciton
$$B_2$$
),
the
Lasso
model
of
degree
5
Ridge
4
performed
well
2
Theil-Sen
showed
promise
Furthermore,
a
GA-based
approach
was
utilized
fit
theoretical
Fan
Varshni
equations,
facilitating
comparative
analysis
ML-predicted
curves.
Journal of Applied Physics,
Journal Year:
2025,
Volume and Issue:
137(13)
Published: April 1, 2025
The
chemical
reactivity,
electronic
properties,
and
nonlinear
optical
characteristics
of
Si-doped
single-wall
carbon
nanotubes
(Si-SWCNTs)
have
been
investigated
within
the
framework
density
functional
theory
(DFT)
in
presence
drug
molecules.
Additionally,
toxic
antioxidant
activities
Si-SWCNTs
for
interactions
were
examined
first
time
using
conceptual
DFT.
This
analysis
involved
calculating
charge
transfer
electrophilicity
index,
as
well
constructing
an
electron
donor–acceptor
map
(DAM)
based
on
nanotube
segment
length,
comparison
with
silicon
carbide
(SiC-NTs).
DAMs
illustrate
electron-donating
-accepting
capacities
adsorption
energy
calculations
indicate
that
SiC-NT
exhibits
a
stronger
affinity
Aldara
(ALD)
drugs
than
Si-SWCNTs.
DAM
suggests
is
superior
acceptor,
generating
higher
oxidative
stress
toxicity
also
evaluated
potential
amperometric
sensors,
demonstrating
acceptable
recovery
17.6
s
significant
variations
work
function
conductivity
shorter
Others
applications
detecting,
recognizing,
transporting
ALD
medical
delivery
systems.
best
acceptor
complexes
has
slightly
positive
ΔG
value
negative
entropy
change,
indicating
increased
structural
order
advantages
carriers.
highest
hyperpolarizability
was
observed
Si-SWCNT/ALD
complexes,
underscoring
their
(NLO)
aqueous
environments.
study
provides
comprehensive
understanding
over
SiC-NTs,
highlighting
promising
nanomaterials
advanced
NLO
applications.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 7, 2025
Abstract
The
design
and
exploration
of
novel
nanostructures
have
emerged
as
a
prominent
focus
in
nanoscience
research
over
recent
decades.
Nanoring‐shaped
materials,
with
unique
topological
functional
characteristics,
hold
immense
potential
electrochemistry,
electromagnetic
absorption,
photocatalysis,
biomedicine.
However,
high‐purity
nanoring
materials
synthesized
at
large
scale
pose
significant
challenges
due
to
the
thermodynamic
barriers
associated
generating
anisotropic
curvatures.
Herein,
curved‐slit‐induced
nucleation
strategy
is
proposed
for
nearly
pure
(≈100%)
synthesis
graphitic
carbon
nitride
(g‐C
3
N
4
)
nanorings
(RCNs)
distinctive
double‐concave
geometries
during
selective
chemical
vapor
deposition
(CVD).
Fluid
simulations
reveal
diverse
fluid
dynamics,
including
velocity,
static
pressure,
vorticity,
facilitating
locally
targeted
g‐C
within
gaps
adjacent
stacked
SiO
2
nanospheres.
Synergistic
interactions
between
silicon
hydroxyl
(Si‐OH)
on
surface
further
direct
site‐specific
deposition.
Temperature‐dependent
polymerization
yields
intermediate
tunable
adhesion
properties
optimal
formation
energy
(−1.98
eV)
/SiO₂
interface
rationalizes
high
selectivity
contact
regions
resulting
RCNs
feature
nanostructure
that
enhances
light‐trapping
via
multiple
reflection
pathways
delivers
exceptional
photocatalytic
performance.
This
work
expands
nanomaterials
structures
their
application
photocatalysis.
Ukrainian Journal of Physics,
Journal Year:
2025,
Volume and Issue:
70(4), P. 251 - 251
Published: April 25, 2025
В
роботi
наведено
результати
дослiджень
колоїдних
розчинiв
надмалих
квантових
точок
(КТ)
ZnSe
та
їх
щiльних
плiвок,
якi
є
матерiальною
основою
оптоелектронних
приладiв.
Порiвняння
результатiв
плiвок
дозволяє
краще
зрозумiти
трансформацiю
оптичних
характеристик
при
переходi
вiд
системи
невзаємодiючих
частинок
у
розчинi
до
з
сильною
екситонною
взаємодiєю
мiж
КТ.
Делокалiзацiя
екситонiв
гiбридизацiя
хвильових
функцiй
створюють
плiвках
новий
набiр
енергетичних
станiв
КТ,
визначають
оптичнi
транспортнi
характеристики.
Ми
виявили
значний
червоний
зсув
спектрами
поглинання
розчину
плiвки,
природа
якого
зумовлена
Дослiдженi
динамiчнi
характеристики
показали,
що
час
переносу
енергiї
збудження
КТ
iз
може
бути
субнаносекундним
(∼610
пс)
i
переважати
внутрiшньої
релаксацiї
внутрiшньощiлиннi,
по-верхневi
дефектнi
стани
носiїв
заряду.
The Journal of Physical Chemistry C,
Journal Year:
2024,
Volume and Issue:
128(26), P. 10945 - 10954
Published: June 15, 2024
Developing
semiconductor
systems
for
light
energy
harvesting
and
photocatalysis
necessitates
the
stabilization
of
photogenerated
charge
carriers.
Achieving
carrier
separation
in
heteronanostructures
involves
band
engineering
two
distinct
semiconductors
extending
delocalization
length
The
radiative
lifetime
neutral
exciton
measures
extent
delocalization.
Nevertheless,
contributions
trap-assisted
nonradiative
decay
channels
significantly
influence
overall
ensemble
measurements;
hence,
it
is
difficult
to
quantify
Herein
recombination
dynamics
heteronanostructures,
comprising
a
CdSe
quantum
dot
as
core
CdS
shell
with
tadpole
morphology
(CdSe-CdS)
are
investigated
through
time-resolved
single-particle
spectroscopy.
CdSe-CdS
system
exhibits
quasi-type
II
characteristics,
resulting
localization
hole
within
core,
while
electron
predominantly
delocalized
between
shell.
determined
by
analyzing
high-intensity
component
photoluminescence
intensity-time
traces
varying
size
dots
increasing
These
studies
elucidate
that
more
efficient
smaller
diameter
an
extended
length.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 12, 2024
Strongly
coupled
interfaces
in
the
epitaxial
growth
heteronanocrystals
(HNCs)
provide
advanced
functionalities
regarding
interface
connection,
electron
transfer,
and
carrier
separation.
However,
majority
of
current
nanocomposites
primarily
focus
on
a
single
heterojunction
involving
only
two
subunits,
which
hinders
achievement
optimized
synergy
energy
transfer
among
more
than
components.
Herein,
ternary
NaGdF
