Triple gap-induced plasmon coupling in Au nanoplate/nanosphere bilayer with strong and uniform electromagnetic hotspots for sensitive and stable SERS detection
Sensors and Actuators B Chemical,
Год журнала:
2025,
Номер
unknown, С. 137325 - 137325
Опубликована: Янв. 1, 2025
Язык: Английский
Totally defined nanocatalysis: Detection of polyelement nanoparticles by deep learning
InfoMat,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 20, 2025
Abstract
High‐entropy
alloys
(HEAs),
which
are
near‐equimolar
of
four
or
more
metal
elements,
have
long
been
used
to
achieve
the
desired
properties
catalytic
materials.
However,
a
novel
alloying
approach
that
includes
multiple
principal
elements
at
high
concentrations
generate
HEAs
as
materials
has
reported.
The
fabrication
well‐defined
ultrastable
supported
HEAs,
provide
superior
performance
and
stability
catalysts
owing
their
augmented
entropy
lower
Gibbs
free
energy,
remains
critical
challenge.
Supported
HEA
sophisticated
because
variety
morphologies
large
sizes
nanoscale.
To
address
these
challenges,
PtPdInGaP@TiO
2
,
comprising
five
different
metals,
is
prepared
via
ultrasonic‐assisted
coincident
electro‐oxidation–reduction
precipitation
(U‐SEO‐P).
electronic
structure
nanoparticles
(NPs)
studied
using
hard
scanning
transmission
electron
microscopy
(STEM),
first
direct
observation
NPs.
This
research
takes
an
important
step
forward
in
fully
describing
individual
Combining
STEM
with
deep
learning
convolutional
neural
network
(CNN)
selected
NPs
reveals
significant
aspects
shape
size
for
widespread
commercially
proposed
method
facilitates
detection
segmentation
NPs,
potential
development
high‐performance
reduction
organic
compounds.
image
Язык: Английский
Poly(ionic liquid) Nanocone Arrays as Light-Harvesting Antenna Enables Hot-Electron Mediated Chemistry under Natural Sunlight
ACS Applied Polymer Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 27, 2025
Язык: Английский
Nanomaterial‐Enhanced Biosensing: Mechanisms and Emerging Applications
Advanced Healthcare Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 1, 2025
Biosensors
serve
as
indispensable
analytical
tools
in
biomedical
diagnostics,
environmental
monitoring,
and
personalized
healthcare,
offering
operation
simplicity,
cost-effectiveness,
high
sensitivity,
portability.
Nanostructure
integration
has
overcome
traditional
sensing
platform
limitations,
particularly
sensitivity
response
dynamics.
These
nanoscale
materials-including
nanoparticles,
nanowires,
nanosheets,
nanotubes-leverage
unique
physicochemical
properties
such
surface-to-volume
ratio,
quantum
confinement
effects,
plasmonic
interactions
to
enhance
biosensor
performance
significantly.
This
review
systematically
analyzes
recent
advances
nanostructure-based
biosensing
technologies,
examining
how
nanomaterial
engineering
improves
sensor
selectivity,
multifunctionality.
Fundamental
mechanisms
are
explored
by
which
nanostructures
electrochemical,
optical,
electrical
performance,
emphasizing
low-abundance
biomarkers
complex
biological
matrices.
Beyond
technological
innovations,
practical
applications
evaluated
across
healthcare
monitoring.
Finally,
current
challenges
outline
future
research
directions,
highlighting
these
technologies'
potential
addressed
transform
diagnostic
capabilities
outcomes.
Язык: Английский
Ligand‐Driven Annular‐Epitaxial Growth of CuS‐Au Heterostructures as Trinity Plasmonic Nanozyme for Multimode Diagnosis of Pathogenic Bacteria
Advanced Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 24, 2025
Abstract
This
study
presents
a
novel
method
to
control
the
site‐selective
growth
of
Au
nanostars
on
CuS
nanodisc
substrate,
it
indicates
that
surfactant
ligands
play
key
role
in
architecture
control,
only
CTAC
and
homologous
series
with
appropriate
affinity
can
direct
annular‐epitaxial
nanoparticles
CuS,
which
demonstrates
superior
peroxidase
(POD)‐mimic
SERS
activity.
Mechanistic
studies
indicate
plasmon‐enhanced
catalytic
activity
be
attributed
spatially
separated
CuS‐Au
heterostructure,
supports
light‐triggered
hot
electron‐hole
pairs
production
localized
surface
plasmon
resonance
hotspots.
For
practical
biosensing,
heterostructures
assembled
lateral
flow
assay
(LFA)
was
used
for
SERS/catalytic
colorimetric/photothermal
three‐mode
detection
Streptococcus
pneumoniae
Klebsiella
,
visually
colorimetric
mode
at
103
CFU/mL
quantitative
SERS/photothermal
modes
2–10
2
within
15
min,
clinical
samples
were
validate
assay,
result
100%
concordant
results
real‐time
PCR.
provides
unique
avenue
controllably
produce
nanozyme,
provide
multi‐mode
signals
LFA
application
meet
requirements
different
scenarios.
Язык: Английский
Recent Plasmonic Gold- and Silver-Assisted Raman Spectra for Advanced SARS-CoV-2 Detection
ACS Applied Bio Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 12, 2024
COVID-19
has
become
one
of
the
deadliest
epidemics
in
past
years.
In
efforts
to
combat
deadly
disease
besides
vaccines,
drug
therapies,
and
facemasks,
significant
focus
been
on
designing
specific
methods
for
sensitive
accurate
detection
SARS-CoV-2.
Of
these,
surface-enhanced
Raman
scattering
(SERS)
is
an
attractive
analytical
tool
identification
SERS
phenomenon
enhancement
intensity
signals
from
molecular
analytes
anchored
onto
surfaces
roughened
plasmonic
nanomaterials.
This
work
gives
updated
summary
gold
nanomaterials
(AuNMs)
silver
(AgNMs)-based
technologies
identify
Due
extreme
"hot
spots"
promoting
higher
electromagnetic
fields
their
surfaces,
different
shapes
AuNMs
AgNMs
combined
with
probes
have
reviewed
enhancing
probe
molecules
quantifying
virus.
It
also
reviews
progress
made
recently
design
certain
capable
imparting
characteristic
response/tags
SARS-CoV-2
detection.
Язык: Английский