Subwavelength-scale off-axis optical nanomanipulation within Gaussian-beam traps
Nanophotonics,
Год журнала:
2025,
Номер
14(2), С. 219 - 228
Опубликована: Янв. 23, 2025
Abstract
It
is
generally
recognized
that
there
only
a
single
optical
potential-well
near
the
focus
in
traps
with
focused
Gaussian
beam.
In
this
work,
we
show
classic
Gaussian-beam
trap
has
additional
potential-wells
for
manipulation
at
subwavelength
scale
off-focus
transverse
plane.
The
are
formed
by
synergy
of
both
gradient
trapping
force
and
scattering
force,
though
previous
studies
usually
adverse
effect
such
as
reducing
stability.
These
work
not
metallic
particles,
but
also
high
refractive-index
dielectric
particles.
By
engineering
contribution
through
particle
size,
material
position
plane,
field
can
be
tailored
to
trap/manipulate
nanoparticles
different
off-axis
distance
scale.
Our
provides
new
insight
into
tweezers
promises
applications
nanomanipulation,
nanoparticle
sorting/separation,
patterning
micro-fabrication
on
substrates.
Язык: Английский
Pushing the Frontiers: Artificial Intelligence (AI)‐Guided Programmable Concepts in Binary Self‐Assembly of Colloidal Nanoparticles
Advanced Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 26, 2025
Abstract
Colloidal
nanoparticle
self‐assembly
is
a
key
area
in
nanomaterials
science,
renowned
for
its
ability
to
design
metamaterials
with
tailored
functionalities
through
bottom‐up
approach.
Over
the
past
three
decades,
advancements
synthesis
and
assembly
control
methods
have
propelled
transition
from
single‐component
binary
assemblies.
While
has
been
recognized
as
significant
concept
materials
design,
potential
intelligent
customized
often
overlooked.
It
argued
that
future
trend
of
nanocrystalline
superlattices
(BNLSs)
can
be
analogous
‘0s’
‘1s’
computer
programming,
customizing
their
precise
these
basic
units
could
significantly
expand
application
scope.
This
review
briefly
recaps
developmental
trajectory
assembly,
tracing
evolution
simple
assemblies
complex
co‐assemblies
unique
property
changes
they
induce.
Of
particular
significance,
this
explores
prospects
co‐assembly,
viewed
lens
‘AI‐guided
programmable
assembly’.
Such
an
approach
shift
paradigm
passive
active,
leading
creation
new
disruptive
properties
driving
profound
across
multiple
high‐tech
fields.
Язык: Английский
Illuminating the Impact of Nonaqueous Solvents on Optical Trapping
The Journal of Physical Chemistry C,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 13, 2025
Язык: Английский
Single-Protein Determinations by Magnetofluorescent Qubit Imaging with Artificial-Intelligence Augmentation at the Point-Of-Care
ACS Nano,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 19, 2025
Conventional
point-of-care
testing
(POCT)
has
limitations
in
sensitivity
with
high
risks
of
missed
detection
or
false
positive,
which
restrains
its
applications
for
routine
outpatient
care
analysis
and
early
clinical
diagnosis.
By
merits
the
cutting-edge
quantum
precision
metrology,
this
study
devised
a
mini
sensor
via
magnetofluorescent
qubit
tagging
tunning
on
core-shelled
fluorescent
nanodiamond
FND@SiO2.
Comprehensive
characterizations
confirmed
formation
FND
biolabels,
while
spectroscopies
secured
no
degradation
spin-state
transition
after
surface
modification.
A
methodical
parametrization
was
deliberated
decided,
accomplishing
wide-field
modulation
depth
≥15%
∼
zero
field,
laid
foundation
supersensitive
sensing
at
single-FND
resolution.
Using
viral
nucleocapsid
protein
as
model
marker,
an
ultralow
limit
(LOD)
obtained
by
lock-in
analysis,
outperforming
conventional
colorimetry
immunofluorescence
>
2000
fold.
Multianalyte
affinity
assays
were
also
enabled
platform.
Further
resort
to
artificial-intelligence
(AI)
augmentation
Unet-ConvLSTM-Attention
architecture,
authentic
dots
identified
pixelwise
survey
through
pristine
queues.
Such
processing
not
just
improved
pronouncedly
probing
but
achieved
deterministic
detections
down
single
human
saliva
ultimate
LOD
much
7800-times
lower
than
that
colloidal
Au
approach,
competed
RT-qPCR
threshold
certified
critical
value
SIMOA,
gold
standard.
Hence,
AI-aided
digitization
optic
qubits,
REASSURED-compliant
contraption
may
promise
next-generation
POCT
solution
unparalleled
sensitivity,
speed,
cost-effectiveness,
whole
confers
conclusive
proof
prowess
burgeoning
metrics
biosensing.
Язык: Английский
Self-Aligned Multilayered Nitrogen Vacancy Diamond Nanoparticles for High Spatial Resolution Magnetometry of Microelectronic Currents
Nano Letters,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 19, 2025
Nitrogen
vacancy
diamond
nanoparticles
(NVNPs)
are
increasingly
integrated
with
methods
for
optical
detection
of
magnetic
resonance
(ODMR),
providing
new
opportunities
spanning
the
visualization
fields
in
microelectronic
circuits,
environmental
sensing,
and
biology.
However,
only
a
small
number
studies
utilize
aggregates
NVNPs
surface-wide
magnetometry,
fact
that
spin
orientations
aggregate
inherently
misaligned,
precluding
proper
field
detection,
compared
expensive
monocrystalline
diamonds.
A
post-processing
method
layering
aligned
center
can
potentially
facilitate
superior
NV
magnetometry
by
allowing
sensitive
simplified
probe
preparation.
We
present
novel
technology
creating
densely
stacked
NVNP
monolayers
inherent
interlayer
alignment
measurement
local
perturbations
traces.
establish
spatial
characteristics
deposited
demonstrate
their
ability
to
capture
dipoles
from
conducting
microwires
via
ODMR.
Our
approach
forms
accessible
protocol
be
used
broad
applications
micromagnetometry.
Язык: Английский
How to Manufacture Photonic Metamaterials
Advanced Materials Technologies,
Год журнала:
2025,
Номер
unknown
Опубликована: Июнь 5, 2025
Abstract
Metamaterials,
which
started
off
focused
on
optical
and
electromagnetic
applications
such
as
invisibility
“hyperlenses”
with
resolution
beyond
the
diffraction
limit,
has
now
broadened
in
scope
to
include
pretty
much
everything
from
wireless
communications
(antennas),
lasers,
computing,
solar
power,
sports
equipment,
medicine;
acoustics,
structural
mechanics
even
air
conditioning.
Yet,
promises
derived
these
have
not
been
exploited
earnest
market
for
them
grown
so
far,
likely
because
a
facile
economical
method
fabricating
without
defect
emerged.
This
review
scrutinizes
methods
used
manufacture
metamaterials
aim
remedy
this
shortcoming.
Язык: Английский
Illuminating the impact of non-aqueous solvents on optical trapping
Опубликована: Ноя. 25, 2024
The
optical
trapping
of
colloidal
semiconductor
nanomaterials
would
enable
single-particle
photophysics,
sensing,
and
chemical
measurements.
Yet,
the
these
materials
has
lagged
behind
other
dielectric
metallic
due
to
prevalence
aqueous
solvents
in
experiments,
which
are
not
suitable
for
many
semiconductors.
Here,
we
trap
particles
multiple
study
impact
non-aqueous
on
dynamics.
These
experiments
calculations
show
that
there
exists
an
optimal
refractive
index
media
maximizes
strength,
nanomaterials,
a
universal
relationship
enhance
strength.
We
also
find
viscosity
no
only
changes
residence
times
unstable
traps.
results
provide
understanding
how
solvent
selection
impacts
dynamics
general
design
rules
solvents,
opening
door
improved
chemistry,
photophysics
studies
using
nanomaterials.
Язык: Английский