Advanced Materials,
Год журнала:
2023,
Номер
36(11)
Опубликована: Ноя. 30, 2023
Abstract
The
concept
of
a
quasi‐bound
state
in
continuum
(QBIC)
has
garnered
significant
attention
various
fields
such
as
sensing,
communication,
and
optical
switching.
Within
metasurfaces,
QBICs
offer
reliable
platform
that
enables
sensing
capabilities
through
potent
interactions
between
local
electric
matter.
Herein,
novel
terahertz
(THz)
biosensor
based
on
the
integration
QBIC
with
graphene
is
reported,
which
multidimensional
detection.
proposed
distinctive
because
its
ability
to
discern
concentrations
ethanol
N‐methylpyrrolidone
wide
range
from
100%
0%,
by
monitoring
changes
resonance
intensity
maximum
wavelet
coefficient.
This
approach
demonstrates
an
excellent
linear
fit,
ensures
robust
quantitative
analysis.
remarkable
sensitivity
our
it
detect
minute
low‐concentration
solutions,
lowest
detection
concentration
value
(LDCV)
0.21
pg
mL
−1
.
2D
coefficient
cards
are
effectively
constructed
continuous
transforms,
presents
more
accurate
for
determining
solution.
Ultimately,
offers
host
advantages,
including
heightened
reusability.
pioneering
establishes
new
avenue
liquid‐based
biosensing.
Advanced Optical Materials,
Год журнала:
2021,
Номер
10(1)
Опубликована: Окт. 17, 2021
Abstract
Terahertz
metamaterial
sensing
(TMS)
is
a
new
interdisciplinary
technology.
A
TMS
system
employs
terahertz
waves
as
the
pumping
source,
these
then
interact
with
sample
and
carry
substance
information,
e.g.,
refractive
index,
absorption
spectra.
These
properties
are
relevant
to
molecular
rotation
vibration
states
produced
by
surface‐plasmon‐polariton‐like
effect.
technology
usually
characterized
large
penetration
depth
high
sensitivity.
Owing
advantages,
may
be
used
for
ultratrace
detection
consequently
has
wide
range
of
practical
applications
in
biomedicine,
food
safety,
environmental
monitoring,
industry
agriculture,
material
characterization,
safety
inspection.
Furthermore,
performance
determined
not
only
structural
topology
metamaterials,
but
also
their
compositions
substrates.
This
paper
reviews
essential
fundamentals,
applications,
recent
advances
focus
on
influence
selection
performance.
review
envisaged
key
reference
developing
TMS‐based
functional
devices
enhanced
characteristics.
Chemical Engineering Journal,
Год журнала:
2023,
Номер
462, С. 142347 - 142347
Опубликована: Март 9, 2023
A
quasi-bound
state
in
the
continuum
(QBIC)
has
unique
attraction
optical
switch,
nonlinearity,
communication,
and
sensing
due
to
its
ultrahigh
radiation
quality
(Q)
factor.
The
QBIC
observed
metasurfaces
also
provides
a
feasible
platform
achieve
in-plane
strong
light-matter
interaction,
as
well
develop
ultrasensitive
biosensor.
However,
existing
metasurface
designs
are
difficult
realize
highly
efficient
excitation
high-performance
of
terahertz
(THz)
band.
Here,
we
manipulate
interference
coupling
between
electric
quadrupole
magnetic
dipole
by
introducing
an
asymmetry
α
into
metallic
structure,
which
excites
resonance
with
Q
factor
up
503.
Correspondingly,
light
field
energy
constrained
effective
area
achieved
enormous
increases
about
400%
1300%,
respectively,
greatly
expands
spatial
extent
intensity
interaction.
Simulations
experiments
show
that
proposed
deliver
high
refractive
index
sensitivity
reaching
420
GHz/RIU,
where
RIU
is
unit,
direct
limit
detection
(LoD)
for
trace
homocysteine
(Hcy)
molecules
12.5
pmol/μL.
Its
performance
40-times
better
than
classical
Dipole
mode.
This
work
new
avenue
rapid,
precise,
nondestructive
molecules,
potential
applications
fields
biochemical
reaction
monitoring,
photocatalysis
photobiomodulation.
iScience,
Год журнала:
2022,
Номер
25(2), С. 103799 - 103799
Опубликована: Янв. 21, 2022
Terahertz
(THz)
electromagnetic
spectrum
ranging
from
0.1THz
to
10THz
has
become
critical
for
sixth
generation
(6G)
applications,
such
as
high-speed
communication,
fingerprint
chemical
sensing,
non-destructive
biosensing,
and
bioimaging.
However,
the
limited
response
of
naturally
existing
materials
THz
waves
induced
a
gap
in
spectrum,
where
lack
functional
devices
using
natural
occurred
this
gap.
Metamaterials,
artificially
composed
structures
that
can
engineer
properties
manipulate
waves,
have
enabled
development
many
devices,
known
"metadevices".
Besides,
tunability
metadevices
be
achieved
by
tunable
microelectromechanical
system
(MEMS)
technologies,
well
including
phase
change
(PCMs),
electro-optical
(EOMs),
thermo-optical
(TOMs).
Leveraging
various
tuning
mechanisms
together
with
metamaterials,
tremendous
research
works
demonstrated
reconfigurable
playing
an
important
role
fill
toward
6G
applications.
This
review
introduces
fundamental
principles
metamaterial
resonant
design
their
related
Moreover,
we
provide
perspectives
on
future
photonic
state-of-the-art
Photonics Research,
Год журнала:
2023,
Номер
12(2), С. 194 - 194
Опубликована: Дек. 4, 2023
The
terahertz
(THz)
wave
is
at
the
intersection
between
photonics
and
electronics
in
electromagnetic
spectrum.
Since
vibration
mode
of
many
biomedical
molecules
weak
interaction
inside
fall
THz
regime,
utilizing
radiation
as
a
signal
source
to
operate
substance
information
sensing
has
its
unique
advantages.
Recently,
metamaterial
sensor
(metasensor)
greatly
enhanced
substances
spectral
selectivity
on
subwavelength
scale.
However,
most
past
review
articles
have
demonstrated
metasensor
terms
their
structures,
applications,
or
materials.
Until
recently,
with
rapid
development
metasensing
technologies,
molecular
paid
much
more
attention
platform
metasensors.
In
this
review,
we
comprehensively
introduce
for
detecting
not
only
featureless
refractive
index
but
also
vibrational/chiral
analytes.
objectives
are
improve
specificity
either
by
chemical
material-assisted
analyte
capture
physical
information.
Later,
boost
absorption
features
certain
frequency,
resonant
responses
metasensors
can
be
tuned
vibrational
modes
target
molecules,
while
frequency
multiplexing
techniques
reviewed
enhance
broadband
spectroscopic
fingerprints.
chiral
summarized
specific
identification
molecules.
Finally,
potential
prospects
next
generation
discussed.
Compared
metasensing,
platforms
accelerated
material
modification
will
lead
greater
impact
advancement
trace
detection
conformational
dynamics
biomolecules
practical
applications.
IEEE Access,
Год журнала:
2023,
Номер
11, С. 18590 - 18619
Опубликована: Янв. 1, 2023
There
is
a
keen
interest
in
the
exploration
of
new
generation
emitters
and
detectors
due
to
advancements
innovation
materials
device
processing
technologies
which
have
opened
up
frontiers
Terahertz
(THz)
spectrum.
Therefore,
it
necessary
review
developments
THz
technology
for
healthcare
applications,
their
impact,
implications
prospects
ongoing
research
development.
This
paper
provides
broad
overview
current
status
application
imaging
sensing
domain.
We
present
knowledge,
identify
existing
challenges
wide
scale
clinical
adoption
systems
prospective
opinions
facilitate
development
towards
optimized
miniaturized
biosensors
that
provide
real
operational
convenience
through
emerging
trends.
Firstly,
we
an
techniques
exploit
properties
detection
with
emphasis
on
terahertz
time
domain
spectroscopy
(THz-TDS)
Metamaterials.
The
mechanisms
tissue
image
contrast
biomedical
applications
particular,
cancer
reported.
Secondly,
outlook
toward
interface
4.0
its
enabling
explored
next
smart
connected
systems.
Third,
merits
suggest
pave
way
future
research.
Further,
discuss
recent
advances
contribution
near-field
based
plasmonic,
resonance
metasurfaces,
waveguides
etc.
breaking
diffraction
limit
are
convenient
point
care.
bring
researchers
roadmap
scope.
Optics Express,
Год журнала:
2023,
Номер
32(1), С. 248 - 248
Опубликована: Дек. 7, 2023
In
recent
years,
metasurfaces
have
attracted
considerable
interest
for
their
unprecedented
capabilities
to
manipulate
intensity,
phase,
and
polarization
of
an
electromagnetic
wave.
Although
metasurface-based
wavefront
modulation
has
achieved
numerous
successful
results,
implementation
multifunctional
devices
in
a
single
metasurface
still
meet
significant
challenges.
Here,
novel
multilayer
structure
is
designed
using
properties
vanadium
dioxide
(VO
Sensors,
Год журнала:
2023,
Номер
23(13), С. 5902 - 5902
Опубликована: Июнь 25, 2023
Terahertz
(THz)
waves,
which
fall
between
microwaves
and
infrared
bands,
possess
intriguing
electromagnetic
properties
of
non-ionizing
radiation,
low
photon
energy,
being
highly
sensitive
to
weak
resonances,
non-polar
material
penetrability.
Therefore,
THz
waves
are
extremely
suitable
for
sensing
detecting
chemical,
pharmaceutical,
biological
molecules.
However,
the
relatively
long
wavelength
(30~3000
μm)
compared
size
analytes
(1~100
nm
biomolecules,
<10
μm
microorganisms)
constrains
development
THz-based
sensors.
To
circumvent
this
problem,
metasurface
technology,
by
engineering
subwavelength
periodic
resonators,
has
gained
a
great
deal
attention
enhance
resonance
response
waves.
Those
metasurface-based
sensors
exhibit
high
sensitivity
label-free
sensing,
making
them
appealing
variety
applications
in
security,
medical
applications,
detection.
The
performance
is
controlled
geometric
structure
parameters.
operating
mechanism
divided
into
two
main
categories,
passive
active.
have
profound
understanding
these
metasurface-assisted
technologies,
we
review
categorize
those
sensors,
based
on
their
mechanisms,
including
resonators
frequency
shift
nanogaps
enhanced
field
confinement,
chirality
handedness
detection,
active
elements
(such
as
graphene
MEMS)
advanced
tunable
sensing.
This
comprehensive
can
serve
guideline
future
metasurfaces
design
assist
Abstract
The
molecular
fingerprint
sensing
technology
based
on
metasurface
has
unique
attraction
in
the
biomedical
field.
However,
terahertz
(THz)
band,
existing
designs
multi-pixel
or
angle
multiplexing
usually
require
more
analyte
amount
possess
a
narrower
tuning
bandwidth.
Here,
we
propose
novel
single-pixel
graphene
metasurface.
Based
synchronous
voltage
tuning,
this
enables
ultra-wideband
(
$$\sim$$
∼
1.5
THz)
enhancement
of
trace
analytes,
including
chiral
optical
isomers,
with
limit
detection
(LoD)
≤
0.64
μg/mm
2
.
signal
17.4
dB)
originates
from
electromagnetically
induced
transparency
(EIT)
effect
excited
by
metasurface,
and
ideal
overlap
between
light
field
constrained
single-layer
(SLG)
ultra-thin
analyte.
Meanwhile,
due
to
nonlinear
mechanism
absorption
envelope
distortion
is
inevitable.
To
solve
problem,
universal
spectrum
inversion
model
developed
for
first
time,
restoration
standard
fingerprints
reaches
R
max
≥
0.99.
In
addition,
asynchronous
provides
an
opportunity
realizing
dynamic
reconfiguration
EIT
resonance
slow
modulation
broadband
range.
This
work
builds
bridge
THz
potential
applications
active
spatial
modulators,
devices
imaging
equipments.
