Physical review. A/Physical review, A,
Год журнала:
2024,
Номер
110(2)
Опубликована: Авг. 5, 2024
Plasmonic
chirality
garners
considerable
attention
owing
to
its
distinctive
optical
characteristics
and
wide-ranging
applications.
Understanding
the
activity
of
single
particles
holds
paramount
significance
for
both
theoretical
frameworks
experimental
measurements
chirality.
When
probing
response
chiral
particles,
high
numerical
aperture
(NA)
objectives,
adept
at
concentrating
light
into
exceedingly
small
regions,
are
frequently
employed.
With
escalating
NA,
incident
no
longer
satisfies
paraxial
approximation,
engendering
electric
field
components
perpendicular
focal
plane.
However,
this
component
is
usually
neglected
in
research.
Here,
we
utilize
angular
spectrum
theory
explore
circular
dichroism
nanoparticles
subjected
tightly
focused
circularly
polarized
light.
Remarkably,
find
that
plane
exhibits
a
pronounced
influence
on
chirality,
potentially
inducing
reversed
when
particle
deviates
from
axis.
Simultaneously,
variations
position
within
yield
significant
discrepancies
higher-order
modes,
particularly
quadrupole
moments.
Our
findings
hold
profound
implications
measurement
analysis
offering
invaluable
guidance
future
investigations
Abstract
Metal‐organic
frameworks
(MOFs)
that
are
the
wonder
material
of
21st
century
consist
metal
ions/clusters
coordinated
to
organic
ligands
form
one‐
or
more‐dimensional
porous
structures
with
unprecedented
chemical
and
structural
tunability,
exceptional
thermal
stability,
ultrahigh
porosity,
a
large
surface
area,
making
them
an
ideal
candidate
for
numerous
potential
applications.
In
this
work,
recent
progress
in
design
synthetic
approaches
MOFs
explore
their
applications
fields
gas
storage
separation,
catalysis,
magnetism,
drug
delivery,
chemical/biosensing,
supercapacitors,
rechargeable
batteries
self‐powered
wearable
sensors
based
on
piezoelectric
triboelectric
nanogenerators
summarized.
Lastly,
work
identifies
present
challenges
outlines
future
opportunities
field,
which
can
provide
valuable
references.
Optical
metasurfaces,
arrays
of
nanostructures
engineered
to
manipulate
light,
have
emerged
as
a
transformative
technology
in
both
research
and
industry
due
their
compact
design
exceptional
light
control
capabilities.
Their
strong
light–matter
interactions
enable
precise
wavefront
modulation,
polarization
control,
significant
near-field
enhancements.
These
unique
properties
recently
driven
application
biomedical
fields.
In
particular,
metasurfaces
led
breakthroughs
imaging
technologies,
such
achromatic
imaging,
phase
extended
depth-of-focus
imaging.
They
also
advanced
cutting-edge
biosensing
featuring
high-quality
factor
resonators
As
the
demand
for
device
miniaturization
system
integration
increases,
are
expected
play
pivotal
role
development
next-generation
devices.
this
review,
we
explore
latest
advancements
use
applications,
with
particular
focus
on
sensing.
Additionally,
discuss
future
directions
aimed
at
transforming
field
by
leveraging
full
potential
provide
compact,
high-performance
solutions
wide
range
applications.
Machine‐learning‐enhanced
nanosensors
are
rapidly
emerging
as
a
promising
solution
in
the
field
of
sensor
technology,
traditional
sensors
encounter
limitations
data
analysis
their
development.
Since
inception
machine‐learning
algorithms
being
applied
to
enhance
nanosensors,
they
have
gained
significant
attention
due
adaptive
and
predictive
capabilities,
which
promise
dramatically
improve
efficiency
collection
processing
applications.
Herein,
comprehensive
overview
technological
innovation
is
provided
by
reviewing
latest
developments
cloud
computing,
edge
burgeoning
realm
neuromorphic
computing.
Cloud
computing
has
emerged
powerhouse,
harnessing
formidable
computational
capabilities
process
vast
volumes
high‐dimensional
data.
Then,
research
directions
for
various
applications
these
artificial
intelligence
(AI)‐enhanced
outlined.
Moreover,
integration
AI
nanosensor
technology
into
chip‐level
although
promising,
still
faces
challenges
such
energy‐efficient
hardware
development,
algorithm
optimization,
scalability
mass
production.
Finally,
forward‐looking
perspective
on
future
machine‐learning‐enhanced
provided,
delineating
opportunities
further
this
exciting
field.
ACS Photonics,
Год журнала:
2024,
Номер
11(3), С. 904 - 916
Опубликована: Фев. 23, 2024
Metasurfaces
have
revolutionized
optical
biosensing
and
diagnostic
assays
due
to
their
sensitivity,
compactness,
label-free
operation.
However,
metasurface
applications
in
analyzing
complex
biological
systems
quantum
bioscience
phenomena
remain
scarce.
In
this
Perspective,
we
discuss
current
developments
biosensors
propose
promising
future
for
probing
or
adopting
effects
improving
spatial
omics
analysis
live
cells
tissues.
We
the
capabilities
of
platforms
monitoring
relevant
biomarkers
viral
diseases,
neurodegenerative
cancers.
Metasurface-empowered
examination
cell
morphology
secretome,
virus
detection,
tissue
imaging
can
improve
accuracy
early
diagnosis.
Furthermore,
review
device-integration
approaches
point-of-care
testing
settings
that
could
constitute
pathways
toward
technology
commercialization.
Altogether,
provide
a
perspective
exploring
precision
health
medicine.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(12), С. 15193 - 15201
Опубликована: Март 16, 2024
Chiral
metasurfaces
are
capable
of
generating
a
huge
superchiral
field,
which
has
great
potential
in
optoelectronics
and
biosensing.
However,
the
conventional
fabrication
process
suffers
greatly
from
time
consumption,
high
cost,
difficult
multilayer
alignment,
hinder
its
commercial
application.
Herein,
we
propose
twisted
stacking
carbon-based
terahertz
(THz)
chiral
metasurface
(TCM)
based
on
laser-induced
graphene
(LIG)
technology.
By
repeating
two-step
sticking
polyimide
film,
followed
by
laser
direct
writing,
two
layers
TCM
aligned
automatically
fabrication.
Laser
manufacturing
also
brings
such
processing
speed
that
with
size
15
×
mm
can
be
prepared
60
s.
In
addition,
due
to
greater
dissipation
LIG
than
metals
THz
band,
giant
circular
dichroism
(CD)
+99.5
−99.6%
is
experimentally
realized.
The
biosensing
bovine
serum
albumin
enhanced
proposed
TCMs
then
demonstrated.
A
wide
sensing
range
(0.5–50
mg
mL–1)
good
sensitivity
[ΔCD:
2.09%
(mg
mL–1)−1,
Δf:
0.0034
mL–1)−1]
proved.
This
LIG-based
provides
an
environment-friendly
platform
for
research
application
rapid
low-cost
Nanomaterials,
Год журнала:
2023,
Номер
13(16), С. 2377 - 2377
Опубликована: Авг. 19, 2023
Infrared
absorption
spectroscopy
is
an
effective
tool
for
the
detection
and
identification
of
molecules.
However,
its
application
limited
by
low
infrared
cross-section
molecule,
resulting
in
sensitivity
a
poor
signal-to-noise
ratio.
Surface-Enhanced
Absorption
(SEIRA)
breakthrough
technique
that
exploits
field-enhancing
properties
periodic
nanostructures
to
amplify
vibrational
signals
trace
The
fascinating
SEIRA
technology
have
aroused
great
interest,
driving
diverse
sensing
applications.
In
this
review,
we
first
discuss
three
ways
performance
optimization,
including
material
selection,
enhancement,
bandwidth
improvement.
Subsequently,
potential
applications
fields
such
as
biomedicine
environmental
monitoring.
recent
years,
ushered
new
era
characterized
Internet
Things,
sensor
networks,
wearable
devices.
These
demands
spurred
pursuit
miniaturized
consolidated
systems
chips.
addition,
rise
machine
learning
has
injected
vitality
into
SEIRA,
bringing
smart
device
design
data
analysis
foreground.
final
section
review
explores
anticipated
trajectory
might
take,
highlighting
future
trends
possibilities.
Advanced Materials,
Год журнала:
2024,
Номер
36(38)
Опубликована: Авг. 2, 2024
Abstract
Photonic
metasurfaces
offer
exceptional
control
over
light
at
the
nanoscale,
facilitating
applications
spanning
from
biosensing,
and
nonlinear
optics
to
photocatalysis.
Many
metasurfaces,
especially
resonant
ones,
rely
on
periodicity
for
collective
mode
form,
which
makes
them
subject
influences
of
finite
size
effects,
defects,
edge
have
considerable
negative
impact
application
level.
These
aspects
are
important
quasi‐bound
state
in
continuum
(BIC)
is
highly
sensitive
perturbations
due
high‐quality
factors
strong
near‐field
enhancement.
Here,
formation
quasi‐BIC
individual
resonator
level
using
scattering
scanning
optical
microscopy
(s‐SNOM)
combination
with
a
new
image
processing
technique,
quantitatively
investigated.
It
found
that
formed
minimum
10
×
10‐unit
cells
much
smaller
than
expected
far‐field
measurements.
Furthermore,
it
shown
coupling
direction
resonators,
defects
states
pronounced
influence
mode.
This
study
serves
as
link
between
responses
offering
crucial
insights
optimizing
spatial
footprint
active
area,
holding
promise
augmenting
such
catalysis
biospectroscopy.
