基于连续域束缚态的高性能手性传感器设计
吕淑媛 Lü Shuyuan,
胡飞 Hu Fei,
罗文峰 Luo Wenfeng
и другие.
Acta Optica Sinica,
Год журнала:
2025,
Номер
45(2), С. 0224001 - 0224001
Опубликована: Янв. 1, 2025
Electrostatic enhanced terahertz metamaterial biosensing via gold nanoparticles integrated with biomolecules
Scientific Reports,
Год журнала:
2025,
Номер
15(1)
Опубликована: Март 12, 2025
Terahertz
spectroscopy
has
drawn
great
interest
for
the
detection
and
characterization
of
biological
matter,
but
its
limited
sensitivity
to
biomolecules
with
weak
changes
in
dielectric
properties
varying
concentration
hinders
potential
bio-sensing
applications.
Here,
a
novel
terahertz
sensor
was
developed
enhancing
ability
detect
based
on
two
electromagnetically
induced
transparency
(EIT)
metamaterials
coupled
gold
nanoparticles
(AuNPs)
integrated
biomolecules.
The
electrostatic
interaction
between
AuNPs
positively
charged
generates
localized
field
enhancement
at
biomolecule–metamaterial
interface,
resulting
threefold
increase
histidine
that
exhibit
property
concentration.
As
contrast,
glucose
shows
weaker
effect
due
electrostatically
neutral
nature.
Experimental
studies
reveal
by
evaluating
modulation
depth
(MD)
(ME)
factors
transmission
peak
presence
AuNPs,
we
achieve
enhance
intuitive
discrimination
these
Additionally,
two-EIT
metamaterial
1
×
2
pixel
array
enables
multiparameter
imaging,
visualizing
spatial
distribution
Our
results
not
only
significantly
improve
response
domain,
also
provide
new
idea
developing
high-sensitivity
functionalized
biosensors
advancing
multi-biomolecular
analysis
imaging
techniques.
Язык: Английский
Asymmetry-Driven Terahertz Quasi-Bound State in Continuum Excitation in Complementary Metamolecule
Опубликована: Янв. 1, 2025
Язык: Английский
Realization of Secure Robotic Brain Via Programmable Metasurface with Robust High‐Order BIC
Advanced Optical Materials,
Год журнала:
2024,
Номер
12(33)
Опубликована: Окт. 9, 2024
Abstract
Terahertz
waves
can
be
widely
used
for
short‐range
communication
in
complex
indoor
environments
and
non‐destructive
object
detection
applications.
Metasurfaces
are
terahertz
sensing
devices
because
they
modulate
multiple
dimensions.
Metamaterial
robot
brain
utilize
metasurfaces'
powerful
direct
modulation
ability
to
achieve
functions.
The
metasurface
realized
based
on
Dynamic
Heterogeneous
Redundancy
(DHR)
architecture
improve
the
confidentiality
security
of
wave
wireless
communication.
While
intrinsic
ohmic
loss
quality
factor
usual
metallic
metamaterials
usually
low,
concept
bound
states
continuum
(BIC)
has
been
proposed
stronger
terahertz‐matter
interactions.
Among
them,
high‐order
BICs
interest
their
strong
robustness
structural
defects.
Therefore,
an
aluminium‐graphene
hybrid
with
BIC
is
proposed.
We
have
principle
excitation
investigated
creatively
high
using
magnetical
EIT
effect.
also
utilized
design
hardware
DHR
architecture.
designed
secure
satisfy
demand
intelligent
robotic
internal
confidential
Язык: Английский
Bound States in the Continuum in Photonics and Metasurfaces: From Phenomena to Applications
Annalen der Physik,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 4, 2024
Abstract
Bound
states
in
the
continuum
(BICs)
refer
to
nonradiative
eigenmodes
located
within
radiation
continuum,
possessing
infinitely
high
Q
‐factor
and
enabling
exceptionally
strong
light–matter
interactions.
BICs
have
found
applications
across
various
domains
photonics
metasurfaces,
including
nonlinear
optical
enhancement,
vortex
beam
generation,
sensor
technology,
microlasers,
other
related
areas.
This
work
starts
by
classifying
phenomena
of
introducing
theoretical
formation
mechanisms
topological
characteristics.
Then,
current
advanced
based
on
BIC‐devices
are
highlighted.
Lastly,
this
discusses
challenges
studies
BICs,
such
as
structural
precision,
material
selection,
measurement
difficulties,
prospect
possible
potentials
future
developments.
review
provides
a
background
application
prospects
BIC‐engineered
devices
fields,
laying
solid
foundation
for
industrial
applications.
Язык: Английский
Pixelated Toroidal Metasurface Sensor with Broadband Terahertz Fingerprint Enhancement for Biochemical Trace Detection
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(51), С. 70795 - 70803
Опубликована: Дек. 13, 2024
Terahertz
(THz)
trace
fingerprint
detection
is
essential
for
identifying
the
characteristic
biomolecular
absorption
fingerprints
from
inherent
molecular
rotational
and
vibrational
modes.
Plasmonic
THz
resonance
shows
a
way
to
enhance
recognition
of
spectra.
In
this
research,
we
experimentally
demonstrate
broadband
metasensor
based
on
pixelated
toroidal
metasurface,
showcasing
excellent
capabilities
in
biochemical
detection.
The
design
employs
mirrored
asymmetric
double
split-ring
resonators
excite
with
high
quality
(Q)
factor
strong
localized
field
enhancement.
This
Q-factor
exhibits
exceptional
spectral
resolution
less
than
50
GHz
sensing,
thereby
capturing
information.
More
importantly,
allows
linear
modulation
resonator
radius,
which
can
be
extended
cover
larger
region
by
adjusting
geometric
parameters
meet
multifingerprints
various
analytes.
Utilizing
enhancement
multiplexing
technology,
precisely
detects
glucose
sensitivity.
introduction
significantly
enhances
characteristics
films,
demonstrating
an
outstanding
sensing
performance.
high-performance
flexible
has
potential
applications
enhanced
providing
powerful
low-cost
approach
advanced
Язык: Английский